Hulk

"Hulk, we got a lot to figure out, pal."

- Bruce Banner

Robert Bruce Banner, M.D., Ph.D., is a renowned scientist and a founding member of the Avengers. As someone who was highly respected for his work regarding, , and gamma radiation, he was commissioned by Thaddeus Ross to recreate the Super Soldier Serum which created Captain America, although Ross elected not to inform Banner what he was creating. However, when an exposure to high levels of gamma radiation instead of vita radiation went awry, the mild-mannered scientist had found that when angered, provoked or excited, he would transform into the huge, rage-fueled, nearly mindless creature known as Hulk.

Fearful of the damage that Hulk could inflict as well as fleeing from the, Banner attempted to commit suicide; when the attempt failed, he chose to live a discreet life in South America while also communicating with Samuel Sterns to cure himself. However, when General Ross had sent a team led by Emil Blonsky to apprehend Banner, he was then forced to return to New York City where he recruited the help of Betty Ross and Sterns to cure him of his affliction. Banner was apprehended by the Armed Forces shortly after, but Blonsky, who had received a variant of the Super Soldier Serum, was administered Banner's gamma-irradiated blood, transforming him into the Abomination and forcing Ross to allow Banner to turn into Hulk and battle him before then allowing Hulk to escape.

Banner fled the United States and dedicated his time to aiding the sick and poor. When a mounting threat called for Banner's specialized scientific expertise, S.H.I.E.L.D. recruited him, knowing full well that the incredible strength of Banner's alter-ego, Hulk, would be an additional asset to the Avengers. Banner was tasked with tracking down the Tesseract, working alongside Tony Stark to achieve this. Despite almost causing a disaster when he was forcibly transformed into Hulk by Loki, Banner joined the Avengers during the Battle of New York and assisted them in defeating Loki and his Chitauri army. Once the Avengers split up in the wake of the battle, Banner had become good friends with Stark and relocated to the Avengers Tower, free to live his life without apprehension.

In the wake of the HYDRA Uprising, the Avenger regrouped once more to battle the ever-growing threat of HYDRA, successfully capturing Wolfgang von Strucker and retaking the Scepter. In order to make it so that Earth could always be safe without constantly needing the Avengers to protect it, Banner assisted Stark with creating Ultron, an artificial intelligence. Ultron, programmed to protect Earth at all costs, deemed humanity and the Avengers as its greatest threat and focused on annihilating them. Banner was then enlisted by Stark to help create Vision, and was later coaxed by Black Widow into transforming into the Hulk and help defeat Ultron. Following Ultron's defeat, Hulk commandeering a Quinjet and left Earth, flying into space and coming across a wormhole that caused the Quinjet to crash on the planet Sakaar, where the stressful environment prevented him from regressing back into Banner, causing him to remain in Hulk form for two years.

On Sakaar, he became a gladiator for Grandmaster and was soon revered as a beloved champion, choosing to turn his back on Earth and enjoy the life of an admired warrior. However, when Thor arrived on the planet, Hulk fought against his old friend in the arena. In the wake of their fight, Thor informed Hulk that Asgard was under threat due to Hela's return. Hulk aided the Asgardians in their fight, defeating Fenris and allowing the Asgardians to board the Statesman vessel, and as Ragnarök was unleashed, joined them on their voyage to Earth.

On their way back to Earth, the Statesman was attacked by the Black Order, who killed half of the Asgardians. Hulk challenged their leader, Thanos, who soundly defeated him. He was then teleported to the New York Sanctum by Heimdall, where Banner warned Doctor Strange, Iron Man and later Captain America of Thanos' arrival. Finding himself no longer able to transform into Hulk, Banner operated a Hulkbuster armor to aid the Avengers in the Battle of Wakanda. Although Banner and his allies managed to kill off Thanos' forces, Thanos personally arrived in Wakanda to retrieve the Mind Stone. He effortlessly subdued Banner and the other heroes and completed the Infinity Gauntlet, wiping out half of the universe's population, with Banner being one of the survivors.

Meeting Betty Ross
"Remember those experiments we volunteered for at Harvard? Those induced hallucinations?"

- Bruce Banner to Betty Ross

Robert Bruce Banner was born on Thursday, December 18, 1969. As he grew up, he started going by his middle name. During his youth, Banner had an estranged relationship with his father, believing that he was never able to impress him. Banner met Betty Ross while in college, where they fell in love. At Harvard University, the couple participated in an experiment involving hallucinogens.

They soon graduated and moved on to Willowdale, Virginia, while working together at Culver University as instructors, where Banner specialized in, , and was a member of the Bio-science Department. During his tenure, Banner met astrophysicist Erik Selvig, one of the university's instructors. During that time, Banner was involved in a praised work on anti-electron collisions and gamma radiation, becoming one of the foremost geniuses of his entire generation. While working on his gamma ray experiments, Banner was unable to visit his father, and ultimately missed his passing. Throughout his career, Banner obtained seven Ph.Ds.

Recreating the Super Soldier Serum
"So this Dr. Banner was trying to replicate the serum that was used on me?" "A lot of people were. You were the world's first superhero. Banner thought gamma radiation might hold the key to unlocking Erskine's original formula."

- Steve Rogers and Phil Coulson

Following the, Thaddeus Ross was commissioned by the United States Armed Forces to rekindle Project Rebirth from the 1940s in order to create super soldiers akin to Captain America. Ross enlisted Banner into the Bio-Tech Force Enhancement Project due to Banner's prowess in biochemistry and radiation, but elected not to inform Banner that his task was to recreate Abraham Erskine's Super Soldier Serum. Believing he was recreating a serum designed to prevent radiation poisoning, Banner chose to substitute the original formula's vita radiation with gamma radiation.

Becoming Hulk
"Banner's work was very early phase. It wasn't even weapons application. He thought he was working on radiation resistance. I would never have told him what the project really was. But he was so sure of what he was onto, that he tested it on himself. And something went very wrong. Or it went very right."

- Thaddeus Ross to Emil Blonsky

Having successfully recreated a Super Soldier Serum consisting of gamma radiation as opposed to vita radiation, Banner was administered a myostatin primer designed by Betty Ross that allowed his cells to absorb radiation temporarily, and believing that his serum was designed for radiation resistance, decided to test it on himself. Wishing to impress the general, Banner upped the dosage of the gamma radiation. Banner was doused with an immense amount of gamma radiation, but the serum's effects, along with Dr. Ross' primer, caused Banner to transform into a giant, green-skinned, muscle-bound titan with incredible strength, but who posed little intelligence and was driven by fits of extreme rage. As an enraged, nearly mindless creature, Banner destroyed the lab, injuring Betty, killing two scientists and an army officer, and also crushing General Ross' arm. In the wake of the accident, the military closed the entire lab building for a year and shut down the entire project. Having managed to revert back to his human form, Banner tried to visit Dr. Ross while she was in the hospital, but her father made him leave. Ross admitted to Banner that the project was developed for military offense and informed him that if he did not allow his monstrous form to be used as a weapon in combat, then his troops would come after him. Three days after the accident, Ross met Banner in the destroyed lab, offering him to take him to another workplace in Maryland to perfect the serum. Banner refused and blamed himself for all the people he hurt, including Dr. Ross. Banner ran off, hiding inside the janitor's room and using the clothes available for disguise, while prompting Ross to order his own troops to chase after him, only to find that Banner was gone. Now a fugitive of the United States Army, Banner went on the run.

Failed Suicide Attempt
"I got low. I didn't see an end, so I put a bullet in my mouth, and the other guy spit it out."

- Bruce Banner

Banner, attempted to escape to Canada, but upon being discovered by border patrol officers, Banner transformed into his monstrous form and tore up the freeway, before making his way to Canada. Eventually making his way to South America, Banner helped a lost boy Miguel when they were attacked by Espinoza. After being brutally beaten down by the criminal, Banner then transformed and destroyed their entire terrorist hideout. In 2006, Banner had tried to contact Betty Ross one last time, but the email was intercepted by the military and she never received it. During his run, Banner traveled through the Dakotas and towards Idaho, where an encounter with some state troopers led to violence. Sometime later, the scientist was spotted via satellite recon photo in Canada and his transformed self was seen by locals by the U.S. border, who had mistaken him for a green. Seeing no end to his run from Thaddeus Ross, Banner went up to the top of a mountain in Alaska to commit suicide. He fired a bullet into his mouth, only to transform and spit out the bullet. The enraged monster caused a quake followed by an avalanche and fell on the ice. He then walked along the bottom of the ocean until he had reached land. This incident was detected by satellite, the last sighting of Banner in five months. Continuing to go on the run, Banner visited a bar where he met Nick Fury, who had Peterson attack Banner, triggering a transformation and causing him to go on a rampage. Banner eventually returned to South America, where he would look for vascular plants that could inhibit radiation and therefore find the key to cure his condition. Banner also learned about a cellular biologist using the pseudonym "Mr. Blue" who could aid him.

Life within Brazil
"Não me faça com fome ... Você não gostaria de mim quando estou com fome... No, wait, oh that's not right."

- Bruce Banner to Tough Guy Leader

Banner eventually settled in the Brazilian slums of the Rocinha favela, Rio de Janeiro, working as a handyman in a soft drink bottling factory that produced Pingo Doce while still attempting to find a cure for his condition, with the aid of his Internet friend "Mr. Blue". To keep himself sane while living in his exile, Banner had adopted a dog named Ricky and taught himself Portuguese by watching television. He also studied martial arts and meditative breathing techniques with a expert to help control his emotions and heart rate, and because of this, had not suffered a transformation for 158 days. During some of his training, Banner would learn new breathing exercises and would allow his sensei to slap him across the face to ensure he maintained control even in harsh environments, although he would stop the lesson if his heart rate went up too far. Although avoiding the daily stress, he was constantly victimized by xenophobia of his coworkers, being supported by the friendship of his colleague and neighbor Martina. While working at the factory one day, the Plant Manager called Banner upstairs in order to fix some broken machinery, offering to place Banner on payroll, which he refused, fearing his name and face being put on the system would then allow Thaddeus Ross to find and capture him. While finishing all his repairs on the machinery, Banner accidentally sliced open his finger, causing a large drop of his gamma-infected blood to floor down onto the bottles below. Horrified, Banner then demanded that the manager stop the machines while he searched for the blood and cleaned it up. However, Banner was unaware that more of his blood had dripped into a soda bottle, where it was drunk by an ill-fated consumer back in Milwaukee, Wisconsin. Once he was done for the day, Banner prepared to go home, only to witness Martina being harassed by a tough guy leader and all his friends. Although Banner initially tried to walk away, he eventually intervened and asked Martina to join him for dinner. When the man tried to push him away, Banner tried to warn him but got his language wrong and claimed he would not like him when he was hungry, not angry, before then leaving.

Search for a Cure
"I found it." "At long last. It's a lovely flower, isn't it? Be sure to use a high dose. Good luck."

- Bruce Banner and Mr. Blue

The search for a cure for his condition drove Banner to study a flower described inside of the book Inventory of Rare and Endangered Tracheophyta of Amazônia, and he finally received it from a man he had hired to search for it. Returning to his house, Banner put up a picture of Betty Ross before he contacted Mr. Blue to inform him of the discovery, as Mr. Blue commented on what a beautiful flower it was and then advised Banner to use a high dose of it. As Mr. Blue had advised him to try a high dose of the component extracted from the plant and wished him good luck, Banner was able to produce a serum using homemade laboratory equipment, using every bit of the flower to ensure he had enough to likely cure himself. Banner tried the serum on a drop of his own blood to undo all the effects of the gamma radiation, and while it seemed to be successful at first as all the green gamma-infected blood was reduced, after just a few seconds it triggered a reaction that made all of the cells explode, marking this latest experiment as a failure.

Informing "Mr. Blue" of the failure, noting that he had used all of the flowers and therefore the could not try it again. The scientist insisted on meeting Banner in person in the United States of America, as he noted that living with gamma poisoning could be more dangerous than the eventual risks of their meeting. Banner still refused, fearing that Thaddeus Ross could find him, however, Mr. Blue then convinced him to send a blood sample for more testing.

A few days later, Banner finally received some more news from Mr. Blue, that the preliminary blood tests showed some significant gamma reduction, but that in order to develop an appropriate antidote for Banner, he would need more data and requested the details behind the Bio-Tech Force Enhancement Project. Banner realized he would have to return to Culver University to retrieve the data and told Mr. Blue that it would be impossible to get it.

Ambush in Rio de Janeiro
"Leave me alone..."

- Hulk

While Banner attempted to sleep that night, he became alerted upon hearing one of the nearby dogs yelping out in pain. As it turned out, Thaddeus Ross had tracked Banner's location due to his infected blood falling into a Pingo Doce bottle, and sent his team led by Emil Blonsky to capture him. They attempted to break into his home and take Banner back into custody by force. Realizing the danger that had arrived, Banner quietly escaped through his window as Blonsky and his unit located Banner's house and burst in to shoot him with tranquilizers, although Banner had already fled through the window and momentarily hid with Martina in her apartment. As Blonsky and the other soldiers looked for Banner, they assumed he had run into the streets of Rocinha, allowing Banner a moment of relief. However, despite Banner attempting to hide his face with his hood, before long Blonsky had caught sight of him and chased him down. As Banner desperately ran for his life, Blonsky and the other soldiers pursued Banner through the streets and rooftops of Rocinha, with Banner using his knowledge of preplanned escape routes to ensure he could keep an advantage. Hiding around a corner, Banner tried to slow his heart rate to prevent his transformation before continuing to run. Continuing to flee from the United States Armed Forces unit, Banner at one point came across General Ross himself, realizing that he was the man behind the chase. Once the two enemies had locked eyes for a brief moment, Banner continued to desperately run for his life, only to accidentally crash into the tough guy leader who attempted to start a fight with him. Banner used his to defend himself against the men away before running from both them and the soldiers. As Banner ran away for safety, the tough guy leader and his friends followed Banner inside the Pingo Doce factory in order to assault him, with Blonsky and his men not far behind. Attempting to hide from all those chasing him, Banner had attempted to control his heart-rate to ensure that he did not transform again, only for the tough guy and his friends to locate Banner and throw him against the wall. Banner attempted to defend himself but the man wanted revenge for Banner saving Martina from him and ignored Banner's warnings that something really bad was about to happen, with the leader punching Banner in the stomach and raising his heart rate. Blonksy located Banner in the factory and approached to witness the appearance of Banner's transformation, triggered by the men beating him. Unaware that Banner had transformed, the tough guy leader attempted to kick him, only to be thrown through two windows, with the monstrous green giant managing to subdue another thug while the third escaped. With all the thugs taken out of the picture, the SOCC soldiers began firing their tranquilizer darts, which merely bounced off the green goliath's skin. As the soldiers continued firing, the monster asked them to leave him alone before furiously fighting back against the soldiers, using his own incredible strength to his advantage. Following their ferocious battle in the soft drink bottling plant, the monster incapacitated almost all the soldiers. With only Emil Blonsky remaining, who had watched in astonishment, Blonsky loaded his weapon and fired bullets at the green titan, which continued to have no effect on him. Enraged, the goliath picked up a forklift truck and launched it at Blonsky, who had barely avoided the attack. He then proceeded the smash through the factory wall, escaping from Brazil and fled into the jungle, much to General Ross' considerable ire the failure.

Returning Home
"I could use a bed for a few nights." "You can have the spare room upstairs." "That'd be so great. There is one other thing."

- Bruce Banner to Stanley Lieber

Having escaped from the Pingo Doce factory and reverting back to normal, Banner awoke in the jungle the morning after the incident, soaking and freezing cold. Spotting an oncoming car, Banner asked for help, only to learn he was no longer in Brazil but had made it all the way to Guatemala. The driver agreed to take Banner to a nearby town, which he thanked him for as the driver wrapped the freezing cold Banner up in a blanket. Taking the advice of Mr. Blue to gather more information on the incident that started his transformations, in order to research a more effective cure, Banner slowly made his way back to the United States, while passing through Chiapas, Mexico, where he became a beggar and received alms to help pay for his journey. Banner managed to buy himself stretchy clothes but suffered nightmares about Emil Blonsky shooting at him. Within seventeen days, Banner made enough money and managed to return to the United States of America, heading to Culver University where he knew his research was being kept. While he was still keeping a low profile and hiding behind a newspaper, Banner saw that Betty Ross had continued working at the university and was dating another man, a psychiatrist named Leonard Samson, and Banner quietly left there without being seen. Banner paid a visit to his old friend Stanley Lieber, who agreed to give him a place to stay at his pizza parlor. As they sat down for a catch-up, Banner insisted that everything Thaddeus Ross and the government had said regarding his fugitive status was untrue, with Lieber responding that he had never believed the news regarding Banner. They then briefly discussed Ross and her relationship with Samson before Lieber agreed to grant Banner some pizza in order to infiltrate the university as a pizza delivery man. Using Lieber's pizzas, Banner returned to the university and attempted to sneak past a security guard to recover his research, claiming that there was somebody upstairs who had ordered a pizza. When the security guard refused to let him pass without clearance, Banner claimed he risked being fired if he did not collect payment and offered the guard a box of pizza he had not been able to collect on, with the guard accepting the pizza and allowing Banner access into the university. Having made it upstairs, Banner looked inside a room and recalled it once being the same space where they had worked on the Bio-Tech Force Enhancement Project before everything had gone terribly wrong. Entering the room, Banner bribed Amadeus Cho with the pizza and logged on to the computer using Dr. Ross' password. Discovering that all the data regarding the project had been deleted, Banner contact Mr. Blue and notified him that the data no longer existed.

Reunion with Betty Ross
"Listen, I should leave early, as early as I can." "Really? You can't stay at all?" "I want to, but it's just not safe for me to be here. If I could borrow some cash... I need to take a bus."

- Bruce Banner and Betty Ross

In the wake of his failure to reclaim his research, Banner prepared to go on the run again, however, he was unaware that Betty Ross had just arrived to visit Stanley Lieber's pizzeria for a meal. As Banner headed downstairs, he came into the dining room where Ross caught a glimpse of him. This forced Banner to quickly run outside and hide behind the dumpster, desperate to not be seen by Ross, as he still believed that bringing her into his situation would put her in grave danger. Convinced about what she had seen, Ross came out searching for him. Banner remained hidden as Leonard Samson followed to learn what Ross was looking for. Eventually, they both went back inside to question Lieber, allowing Banner to slip away into the night. As it began to rain, Banner made his way out of the city, attempting to flee. However, just as Banner attempted to hitch a ride in the pouring rain, he heard a car pull up behind him and discovered that Dr. Ross had successfully tracked him down. The two former lovers then ran into each other's arms and embraced, with Ross then desperately telling Banner not to leave. Banner eventually relented and got in Ross' car as she drove him back to her home to rest so they could discuss everything that had happened since he had gone on the run. Back at Ross' home, she had revealed to Banner that she had extracted the data on the Bio-Tech Force Enhancement Project before the lab had been raided, which she secretly retained. Ross questioned why they could not go to Thaddeus Ross and explain everything, but Banner told her that the general had made all his intentions clear. Ross gave Banner a bed and agreed to take him to a bus station the following morning.

Battle at Culver University
"They're here. Betty, look at me, look at me! You have to go far away from me as you can! Don't argue with me, just go. Go!"

- Bruce Banner to Betty Ross

Intending to leave town, Banner and Ross returned to Culver University the following morning. However as Banner and Ross were having a moment of looking at each other, Banner noticed the United States Armed Forces soldiers surrounding the campus. As the worried Leonard Samson had chosen to inform the military of Banner's whereabouts, Banner ordered Dr. Ross get as far away from him as she could before he ran away as quickly as possible, with the Strategic Operations Command Center soldiers mounting a full-scale assault on the campus. As the soldiers chased Banner through the university, he managed to hide for a brief moment in the library and, fearing the memory stick containing all the information of the Bio-Tech Force Enhancement Project would be destroyed or lost, chose to ingest it. Having swallowed the flash drive, Banner continued to run, only to find himself trapped in an overpass. With no escape in sight as soldiers blocked both doorways, Banner watched as Thaddeus Ross ordered his troops to fire tear gas into the overpass. As the gas filled the walkway, Banner removed his shirt and tried to cover his mouth, but became distracted when he witnessed one of the SOCC soldiers knocking Dr. Ross to the ground as she tried to run to his aid. The emotional response to seeing Dr. Ross being tackled coupled with the effects of the gas triggered Banner to transform. His monstrous persona then destroyed the overpass, leaping out into the lawn and roaring at the soldiers. As the green beast stepped towards them all, he was attacked by the SOCC soldiers under the direct orders of General Ross, who was still determined to capture him. After transforming, he attempted to reach Dr. Ross, only to be assaulted with gunfire. Despite his near invulnerable skin allowing the bullets to merely bounce off him, the constant attacks caused him to furiously fight back and destroy several Humvees, knocking over one before moving towards a nearby statue, picking up the second Humvee and smashing it apart against the statue, forcing all the nearby soldiers to retreat as the giant titan reduced the vehicle to pieces. With his troops failing to apprehend Banner, General Ross ordered Emil Blonsky, who had been injected with a variant of the Super Soldier Serum, to enter the fray. Blonsky then fired multiple tear gas grenades at the beast before leaping over his head and shooting him in the face. Angered at the assault, the jade giant attempted to retaliate. Using his newfound agility, Blonsky evaded being killed before being ordered by General Ross to run, causing the titan to chase him down. As he pursued Blonsky, the soldiers activated the Stark Sonic Cannons made by Stark Industries, which managed to subdue him. As he was forced onto his knees due to the incredible pain delivered by the sound waves, he heard Dr. Ross calling out Banner's name, which invigorated him into using a metal shard to shield himself from the sonic waves before using it to destroy one of the cannons, and leaping high into the air to destroy the second and final cannon. Following the destruction of the cannons, Blonsky made his way towards Banner's alter-ego, ignoring General Ross' orders. As Blonsky provoked the titan standing in front of him, he was swiftly kicked into a tree, which crushed most of his bones. As he paced around the campus, he was approached by Dr. Ross, who was unafraid of him as she attempted to calm him down and turn him back into Banner. However, just as his anger was fading, General Ross ordered a to fire on him. With Dr. Ross in danger as she stood near him, the green beast used his makeshift metal shard to destroy the helicopter. As the helicopter fell to the ground and exploded, he shielded Dr. Ross from the explosion while General Ross looked on in horror. Cradling her unconscious body in his arms, the massive monstrosity proceeded to escape with her to the Smoky Mountain National Forest. The Battle at Culver University marked the first time Banner's alter-ego had been revealed to the public, and during an interview with WHiH World News, Jim Wilson, a student at Culver University, described the green monster he had witnessed as a hulk, prompting the media, the world, the military, and eventually Banner himself, to refer to his beastly persona as "Hulk". Hulk took the unconscious Ross to the national forest where he laid her inside a cave until she woke up. Upon waking up, Ross screamed in surprise as she looked at Hulk, causing him to hit his head before roaring at the thunder, perceiving it to be a threat. Noting that Hulk was shielding him from the thunder, Ross calmed Hulk down, and the pair sat in silence side by side.

Heading to New York
"Maybe your mind is in there, it's just overcharged and can't process what's happening." "I don't want to control it. I want to get rid of it."

- Betty Ross and Bruce Banner

Hulk had eventually reverted back into his original human form as Banner overnight and Betty Ross awoke while still hiding out in the Smoky Mountain National Forest. With Banner struggling to even stand due to the trauma of his latest Hulk transformation during the Battle at Culver University, Ross helped him walk as they made their way out of the mountains and chose to hide out in a motel outside of Ashwood, North Carolina in the foothills of the Smokies. Once there, Banner took a shower to relax but was haunted by visions of Emil Blonsky and the helicopter fired at him during the last battle. While Ross went out to buy him more clothes, since he was torn during his transformation, Banner went to the bathroom and vomited up the memory stick he had swallowed containing all their research on the Bio-Tech Force Enhancement Project. Eventually, Ross then returned and expressed her surprise at his decision to swallow the memory stick before handing Banner the clothes she had bought for him, with Banner rejecting a pair of stretchy purple trousers. While they hid out inside the motel room, Ross spent time cutting Banner's hair, teasing him as he appeared concerned she would not do it right. Once she had finished, Ross held Banner in her arms, leading to the pair kissing and falling on the bed. However, Banner noticed that being intimate with Ross was raising his heart rate so, fearing it would cause him to transform into Hulk if they were to have sex, Banner stopped them, much to both of their disappointment. As they prepared to go on the run once again, Banner explained to Ross how they would avoid detection from the United States Armed Forces, noting that she could no longer use her phone or her credit cards due to them being tracked. When Ross questioned how they would be able to get to New York City with only forty dollars, she suggested selling her mother's necklace. Despite Banner refusing to let her, Ross insisted and used the money to buy a truck. As they prepared to leave, Banner emailed Mr. Blue before Ross took a quick photograph of Banner as they got inside the truck and began the long drive. Along the way, Ross asked Banner what his own experience of turning into Hulk was like, with Banner comparing it to experiments they volunteered for at Harvard University only more intense. Ross inquired as to whether Banner could learn to control Hulk, citing that Hulk knew her and therefore a part of Banner existed within Hulk, only for Banner to respond to her father had made his intentions clear on weaponizing Hulk and that he wished to get rid of his alter-ego permanently. Having spent several hours asleep while still on the road, Banner was eventually awoken by Ross as she had just seen the New York City Police Department were currently searching all the vehicles which were attempting to get into New York City, clearly searching for the fugitives. Fearing this would mean that the SOCC would be able to locate them, Banner and Ross got out of their truck and got off the bridge, instead of using their remaining cash to hire a boat. Having made it onto the mainland, Banner and Ross discussed what would be the best way to get across the city in order to finally meet with "Mr. Blue". Ross at first suggested that they take the subway, but fearing Banner turning into Hulk underground, they decided to take a taxi. However, when the taxi driver drove like a maniac, they got out as Ross screamed at the driver. Seeing how angry she was, Banner suggested Ross use some of his calming techniques.

Meeting Mr. Blue
"We have the antidote now." "They don't want the antidote! They want to make it a weapon! And if we let it go, we will never get it back. You don't know how powerful this thing is."

- Samuel Sterns and Bruce Banner

While they continued to avoid detection, Betty Ross and Banner then arrived at the Grayburn College in Harlem, New York City, where they planned to finally meet with the mysterious "Mr. Blue", a resident scientist named Samuel Sterns. Ross at first greeted Sterns, who was surprised to meet her before Banner made himself known, with Sterns amazed to finally meet Mr. Green. Accompanying Sterns to his lab, Banner and Ross listened as Sterns expressed his amazement at meeting Banner, noting he was shocked that such an unassuming man had so much gamma radiation inside of him. They learned that Sterns had completed the possible antidote that could potentially cure Banner's condition, or merely reverse a specific transformation, although Sterns warned that the procedure did hold the risk of killing Banner if anything went wrong. In order to test the antidote's effectiveness, Stern would be forced to trigger a Hulk transformation, and an underdose would prove futile and make Hulk wreak havoc again, while an overdose could kill him. Despite the risks, Banner agreed to test Stern's antidote and was restrained, becoming quite nervous when Stern had begun kicking the machinery to get it all working. With Ross standing close by him, Banner attempted to relax as Stern began the experiment. Sterns then gave Banner an electric shock directly to his head, which caused him to undergo his transformation into Hulk, with Sterns looking on in amazement at the power Banner was manifesting. When Hulk inadvertently knocked Sterns overdue to attempting to break free of his restraints, Ross was forced to then jump onto his chest and attempted to keep Hulk as calm as possible. Using this brief distraction, Sterns was able to administer the antidote. The antidote succeeded in granting Banner control over Hulk for the first time shortly before prompting Hulk to revert back into Banner. Exhilarated by the success of the antidote, Sterns began gushing how the antidote had never worked for any of his previous test subjects. When Banner questioned what he meant, Sterns revealed that he had synthesized Banner's blood sample into a larger supply with the intention of using its gamma-irradiated properties to benefit mankind, adding that his test subjects did not survive because they were not administered Dr. Ross' myostatic primer, which allowed Banner's blood cells to absorb much of the radiation instead of outright killing him. Appalled by what Sterns had done and fearful of Hulk's power falling into the wrong hands, Banner then attempted to convince Sterns to immediately destroy the blood supply, claiming it was too powerful if it were to fall into the government's hands. However, just as Sterns attempt to convince Banner that he was being paranoid regarding the government's interest, Banner was shot in the back by a tranquilizer from an SOCC snipers. As Banner dropped onto the floor, Emil Blonsky charged into the room and attempted to trigger his transformation into the Hulk, only to be stopped by his fellow SOCC soldiers.

Captured
"You think you can control it?" "No, no, not control it, but, I don't know, maybe aim it." "And what if you can't?" "We made this thing. All of us. Please."

- Betty Ross, Bruce Banner and Thaddeus Ross

As both Banner and Betty Ross were taken into custody, Banner was strapped down on a stretcher while the SOCC kept a close watch over him. Banner was then brought to Thaddeus Ross who, upon seeing that Banner had seemingly had no reaction to the ordeal, warned that if he had been successful in curing himself of Hulk, he would then ensure that Banner spent the rest of his life in a prison without any hope of regaining his freedom. While Banner was handcuffed, they were moved inside a helicopter with General Ross as Dr. Ross, who would be granted freedom by her father, while Samuel Sterns was left to be interrogated by Kathleen Sparr back at Grayburn College, who wished to know what they could do with Banner's blood samples. While in the air, Banner and Dr. Ross made eye contact and smiled at one each other to reassure themselves. However, the helicopter suddenly received news that "Hulk" was terrorizing the citizens of Harlem. As it turned out, Emil Blonsky had forced Sterns to inject him with Banner's infected blood, which coupled with the imperfect Super Soldier Serum in his system, caused Blonsky to mutate into a behemoth dubbed Abomination. Banner, realizing that Blonsky was Abomination and that he was the only one who could defeat him, informed the Rosses that while he could not necessarily control Hulk, he believed he could aim its power and use it to provide relief to the soldiers and citizens of Harlem. General Ross ordered the soldiers to land the helicopter, but Banner insisted that they remain in the air so that he could jump out and keep everyone else safe, while also using the altitude to trigger a transformation. Dr. Ross attempted to stop Banner, warning that he was unsure if he had been cured or not, but Banner insisted that he had to try regardless in order to save all of the United States Armed Forces soldiers and the many innocent civilians from Abomination's rampage. Having kissed her goodbye, Banner then fell from the helicopter, hoping that the fall would trigger his transformation. To his horror, he discovered that it was not working; however, the fear of dying from such a height triggered Banner's transformation into Hulk right before he slammed into the street below.

Duel of Harlem
"Any last words?" "Hulk... SMASH!"

- Abomination and Hulk

Having survived the fall out from Thaddeus Ross' helicopter, Banner transformed into Hulk and punched his way back to the surface, while many of the people of Harlem ran in terror. Getting to his feet, Hulk roared as loud as he could, getting the attention of Abomination, who stopped killing all of the people as he clearly delighted at the chance to fight Hulk and try to prove himself the superior monster. Ripping off the remains of Banner's shirt, Hulk furiously charged towards his enemy, as Abomination did the same. Both roaring as loud as the could, Hulk and Abomination launched at one another, only for the larger and more powerful Abomination to counter Hulk's attack as Hulk was thrown across the street. The impact of the hit shocked Hulk as he had struggled to get back onto his feet, while Abomination laughed at his suffering, challenging Hulk to get up and continue their fight to the death. Getting back up, Hulk saw a New York City Police Department car parked just beside him and proceeded to then smash the police car in half and used the pieces as boxing gloves. As Abomination came closer to him, Hulk furiously smashed the two ends of the car together before striking his enemy as he repeatedly punched Abomination into the pavement so hard that it caused a deep crater and had completely destroyed the remains of the car. Having seemingly beaten Abomination into submission, Hulk prepared to unleash one more punch to finish off his enemy, only for Abomination to question if that was all Hulk had in him, as Emil Blonsky had done during the Battle at Culver University. Getting his revenge for what happened to him during that previous encounter, Abomination proceeded to kick Hulk across Harlem and through a wall into a nearby building, giving chase in order to continue their battle, while Hulk recovered while inside a nearby dumpster. As Abomination had climbed up the wall and searched for Hulk, Ross then ordered his gunman inside of the helicopter to open fire on him, with the soldiers of the United States Armed Forces briefly unsure about which monster to target. As Abomination ran after the helicopter across the rooftops, Hulk recovered from the last hit and chased after Abomination, who was now targeting General Ross' military helicopter itself. Before Hulk could reach him, Abomination lunged and grabbed the helicopter just as Hulk arrived and grasped him. Desperate to do whatever he could to protect Betty Ross and everyone else onboard the helicopter, Hulk began punching and pulling at the Abomination, even trying to crack his exposed spine. However, despite all of Hulk's efforts, the helicopter still lost control and crashed down onto the ground, with Hulk and Abomination being briefly separated. While Hulk recovered from the crash and went to see if Betty and the general had survived, Abomination reappeared and challenged Hulk to continue fighting. The two furiously faced off once again and Abomination pinned Hulk against a wall and stabbed him in the chest with his exposed elbow, while Banner briefly gained control of Hulk, unable to defeat his foe. Telling Hulk that he did not deserve his power, he threatened that Hulk would be forced to watch Betty die. With Abomination threatening Betty, Hulk managed to reassert his control and liberated himself from Abomination's grasp, pulling him away from him before slamming him into the wall with all his might just as the helicopter caught fire due to the leaking fuel. Seeing this, Hulk charged forward and thunder-clapped his hands together and managed to blow out the entire fire, saving Betty and the general from being consumed by the flames. However, just as Hulk watched as Betty and the general were pulling themselves out of the wreckage of the helicopter, Betty screamed out a warning just before Abomination hit Hulk from behind with a concrete pillar on a high-tensile chain. The power of the hard blow was enough to knock Hulk to the ground, with another hit almost rendering Hulk unable to move while Abomination relished at all of the painful sufferings he was inflicting onto Hulk. With Hulk seemingly unable to continue the fight, Abomination then turned his attention to Ross, swinging the concrete pillar and chain to kill Betty and the general. As Abomination inquired as to whether they had any last words, Hulk rushed to his feet and uttered "Hulk Smash!" as he stamped on the ground, shattering the concrete and trapping one of Abomination's legs. As Abomination lost his footing, the chain flew into the air and wrapped itself around his neck. Charging back into the battle, Hulk then grabbed the chain and began strangling Abomination. The pair engaged in a brutal fight, as Abomination desperately tried to free himself from Hulk's powerful grasp as he struggled for air, with Hulk even managing to rip out of his Abomination's exposed elbows and stabbing him with it. Poised to deliver a final blow and crush Abomination's throat, Hulk was stopped in the act of killing by the intervention of Betty as Hulk finally let out a powerful, victorious roar. With Abomination finally defeated, members of the New York City Police Department as well as the Strategic Operations Command Center arrived on the scene with the guns aimed directly at Hulk. However, Ross ordered all the men to lower the weapons as Hulk and Betty had a moment as they briefly looked at one another. As more soldiers arrived in a helicopter, Hulk was left with no other option and fled the scene to avoid capture.

Gaining Control of Hulk
"I moved on, I focused on helping other people. I was good."

- Bruce Banner to Nick Fury

Thirty-one days after his fight with Abomination, Banner arrived at a cabin in Bella Coola, British Columbia. Having repurchased Betty Ross' necklace from a pawn shop, he left the necklace in a letter addressed to Ross. After his first success in controlling Hulk, Banner focused on gaining control over Hulk instead of suppressing it, and managed to learn how to retain control over his alter-ego if he chose to transform. Eventually, Banner left Canada and traveled to Asia, crossing the border from Pakistan into India, where an incident involving some local mercenary bandits soon forced him into transforming into Hulk and protecting local residents from the attempted terrorist attack. However, Banner continued to reside in India for over a year and focused his efforts on providing medical assistance to the poor.

Initiation by Black Widow
"This is the Tesseract. It has the potential energy to wipe out the planet." "What does Fury want me to do, swallow it?" "Well, he wants you to find it. It's been taken. It omits a gamma signature that's too weak for us to trace. There's no one that knows gamma radiation like you do."

- Natasha Romanoff and Bruce Banner

One evening, Banner was approached by a girl that claimed her parents were very ill. He followed her to her home on the outskirts of the city where she made a quick escape. Banner remarks to himself that he should have been paid upfront. To his surprise, he was approached by Natasha Romanoff. Banner asked Romanoff did she was sent there to kill him, to which she assured him that she was sent by S.H.I.E.L.D. Suspicious, Banner suggested that the building was already surrounded. Romanoff revealed that S.H.I.E.L.D. had been assisted Banner in his hiding; keeping their distance and derailing parties interested in capturing Hulk. She divulged that S.H.I.E.L.D. was facing a potential global catastrophe, events that Banner claimed to actively avoid. Banner is shown an image of the Tesseract, to which he questioned if Nick Fury wanted him to swallow it. Romanoff claimed that Fury needs his help finding it as the object emits Gamma Radiation, Banner's specialty. Banner remained doubtful of S.H.I.E.L.D. intentions as he suggests that S.H.I.E.L.D. needed him in a cage. He suddenly yells in a fit of rage, with Romanoff immediately draws her firearm in response. Banner takes a step back and apologizes for getting angry at her. He reveals that he wanted to see how Natasha would respond to a Hulk incident; to which she orders a surrounding S.H.I.E.L.D. task force to stand down. Banner agrees to assist S.H.I.E.L.D. in finding the Tesseract.

Working with S.H.I.E.L.D.
"You really have got a lid on it, haven't you? What's your secret? Mellow jazz? Bongo drums? Huge bag of weed?" "Is everything a joke to you? Threatening the safety of everyone on this ship isn't funny. No offense, Doctor." "No, it's all right. I wouldn't have come aboard if I couldn't handle pointy things."

- Tony Stark, Steve Rogers and Bruce Banner

After meeting on the Helicarrier, Banner and Tony Stark began research on the recently captured Scepter of Loki. He and Stark talked about the negative sides of their skills, Stark referring to the shrapnel in his heart and Banner talked about his constant fear of Hulk's destructive powers. They also talked to Steve Rogers about what Nick Fury's true intentions with the Tesseract were. As they completed their work and waited for the information, Fury arrived, demanding to know why Stark had been hacking into all of S.H.I.E.L.D.'s files. At the same time, Rogers arrived, having discovered HYDRA weapons powered by the Tesseract. Natasha Romanoff and Thor tried to convince Banner to remove himself from the situation as they believed he was being manipulated by Loki. When the team began to spark unnecessary arguments, Banner picked up the Scepter, having been affected by it. The team was able to snap him back to reality just as the computer located the Tesseract, with Banner realizing that it was atop Stark Tower in New York City.

Attack on the Helicarrier
"Sir, the Hulk will tear this place apart!" "Get his attention."

- Maria Hill and Nick Fury Before Banner could inform the team of the Tesseract's whereabouts, the brainwashed Hawkeye led a team of mind-controlled soldiers into the ship and destroyed one of the engines, causing an explosion that resulted in Banner and Black Widow falling into the weapons cache room. The explosion prompted Banner to begin transforming into Hulk. While Banner had learned to retain control during intentional transformations, his attempt to repress a transformation and subsequently failing resulted in Hulk emerging without Banner retaining control. As Romanoff looked on in horror, Hulk chased after the agent, attempting to kill her. Although she managed to evade him for a long time, Hulk was able to catch up to her and throw her against a wall. Before he could kill Romanoff, Hulk was intercepted by Thor. As Hulk's rage increased during his fight with Thor, he was able to survive direct hits from Mjølnir and throw the Asgardian across the room several times. At one point he ripped the wing off a fighter jet and hurled it at Thor. During the fight, Hulk attempted to lift Mjønir, but even with his incredible strength, he was unable to move the hammer, which only increased his rage. As the fight got more intense, Nick Fury and Maria Hill were left with no other choice than to send a fighter jet to shoot at Hulk, as they feared he would destroy the Helicarrier and kill everyone aboard. When the jet began firing at him, Hulk's enforced skin was able to deflect the bullets leaving him unharmed. Outraged by the attack Hulk roared, left Thor and leaped at the jet. He was able to rip it apart in the sky causing it to spin out of control, the pilot attempted to eject, Hulk caught him and threw him across the skyline, fortunately, the pilot survived. As the jet exploded, Hulk fell from the sky, crash-landing into an empty warehouse. Hulk eventually transformed back into Banner and woke up naked in the warehouse. A security guard at the warehouse informed Banner that he did not harm anyone during his crash-landing and that he believed that Hulk had controlled his fall to prevent casualties. The security guard then asked him if he was an alien, to which Banner assured him he was not. Giving Banner clothes, the guard asked Banner if there was someplace he had to be. Deciding to help the Avengers, Banner informs the man that he needs to go to New York, and the guard allows Banner to use his motorcycle.

Battle of New York
"Dr. Banner, now might be a really good time for you to get angry." "That's my secret, Cap. I'm always angry."

- Captain America and Bruce Banner

Banner arrived during the midst of the Battle of New York, where he apologized to Romanoff for attacking her earlier. As Captain America informed Iron Man that the latter's prediction of Banner returning had come true, Iron Man informed them that he was leading an enemy towards them. As the Avengers witnessed the Leviathan heading their way, Banner made his way towards the creature. As Captain America claimed that now would be a good time for Banner to get angry, Banner responded that his secret to learning how to induce a controlled transformation was that he was always angry. Banner then instantly transformed into Hulk, stopping the Leviathan with one punch, causing its armor plates to fall off and allowing Iron Man to kill it. Hulk then roared out loud as he joined the Avengers, and was tasked by Captain America to "smash" the Chitauri. Hulk threw himself at the Chitauri army, immediately killing many soldiers climbing buildings, using his incredible strength and leaping abilities he was able to leap high in the air and hit the Chitauri Chariots out of the sky. He also killed several Leviathan creatures, at one point battling on top of one alongside Thor, together they killed it and as they took a moment to catch their breath, Hulk punched him across the room, getting revenge for their earlier fight. Hulk then entered the Stark Tower and threw Loki against the wall. Loki screamed at Hulk that Hulk was unworthy to fight him, not listening to the speech Hulk beat Loki into submission. Hulk left Loki unable to move, said "Puny God", and rejoined the battle. At one point Hulk became surrounded by Chitauri Chariots who all fired down at him together. As the battle looked almost hopeless, the World Security Council eventually sent a missile to destroy Manhattan. Stark flew the missile to the Wormhole, destroying the Chitauri ship and thus killed all the other soldiers. Stark was able to escape the closing Wormhole but his suit shut down in the process. Hulk caught Stark as he fell and brought him to the other Avengers. For a moment it seemed Stark had made the ultimate sacrifice and had suffocated in space, however, Hulk roared in his face, waking him up.

Battle Aftermath
"I don't think you understand what you've started. Letting the Avengers loose on this world. They're dangerous." "They surely are. And the whole world knows it. Every world knows it."

- Gideon Malick and Nick Fury

Later, the Avengers silently ate at the Shawarma Palace. They were interrupted by War Machine, who arrived too late to aid in the battle.

After Loki was sent back to Asgard with Thor and the Tesseract, Banner and Stark drove away in one of Stark's Acura 2012 Stark Industries Super Car as the Avengers went their separate ways. After the fight, Banner was able to show that he could keep Hulk under control. Nick Fury made it so that Banner could move around in the world without being afraid of being arrested or kidnapped.

A Therapy Session
"I'm sorry, I'm not that kind of doctor. I'm not a therapist. It's not my training, I... I don't have the–" "What? The time?" "Temperament."

- Bruce Banner and Tony Stark

Sometime after his battle against Aldrich Killian, Tony Stark met with Banner at Avengers Tower to talk about his traumas. But Banner fell asleep near the beginning of the session, so Stark told Banner more stories about his life, to which Banner again quickly fell asleep.

Targeted by HYDRA
"Zola's algorithm is a program... for choosing Insight's targets." "What targets?" "You. A TV anchor in Cairo, the Undersecretary of Defense, a high school valedictorian in Iowa City. Bruce Banner, Stephen Strange, anyone who's a threat to HYDRA. Now, or in the future."

- Jasper Sitwell and Captain America

Banner was mentioned by Jasper Sitwell as one of the numerous individuals who posed a threat for HYDRA's plan, as concluded by Arnim Zola's algorithm for Project Insight.

The Genius of Banner
"They cut you open. Your heart stopped." "Tetrodotoxin B. Slows the pulse to one beat a minute. Banner developed it for stress. Didn't work so great for him, but we found a use for it."

- Natasha Romanoff and Nick Fury

S.H.I.E.L.D. resorted to using many inventions developed by Banner that maybe did not have the use he intended to have, but were useful in other ways, such as Tetrodotoxin B or Gamma Power Reserve. Banner also designed the Retreat, a place that looks like a log cabin on the outside, but the inner walls have vibranium lining and capable to contain Hulk. Suddenly, Banner transformed to Hulk inside the Retreat and attempted to break outside. However, the wall was strong enough to handle his punch.

War on HYDRA
Eventually, the Avengers reassembled again to take down HYDRA. During this time, Natasha Romanoff began to develop a romantic interest in Banner, which he reciprocated. Romanoff developed a lullaby that she found could successfully make Hulk transform back into Banner.

Battle of Sudan
"This is what I get for waiting in the car."

- Bruce Banner

While Banner was occupied with a scientific examination, J.A.R.V.I.S. informed him that Natasha Romanoff was in need of assistance from the other Avengers in Sudan. Banner went into the team's Quinjet in order to fly to her location. As the other Avengers ran out to fight the HYDRA agents, Banner stayed inside the Quinjet, waiting for further instructions.

HYDRA soldiers found him in the jet and shot it with one of their tanks, trying to kill him. Unfortunately for them, the explosion only made Banner transform into Hulk, allowing him to help his allies in the fight. Together, the team was able to defeat the soldiers and their leader, Jensen.

Attack on the HYDRA Research Base
"Hey big guy. Sun's getting really low."

- Black Widow to Hulk

Sometime later, the Avengers discovered through Maria Hill the whereabouts of Loki's Scepter, which had been taken to Wolfgang von Strucker's secret HYDRA Research Base in Sokovia, where it had been used by List to conduct experiments on individuals with powers. The heroes attacked the fortress protecting the laboratory with Hulk destroying armored vehicles and bunkers defending the outpost. Romanoff performed the lullaby with Hulk to get him to calm down and turn back into Bruce Banner. On the way back to the Avengers Tower, Banner listened to some classical music. Natasha then came to him and told him that the lullaby worked better than ever.

Designing Ultron
"I thought Ultron was a fantasy." "Yesterday it was. If we can harness this power, apply it to my Iron Legion protocol..." "That's a mad-sized if."

- Bruce Banner and Tony Stark

Once they arrived at Avengers Tower, Banner and Tony Stark began decoding the secrets of the Scepter. Stark compared J.A.R.V.I.S. to the contents of the Scepter which Banner believed to be a form of thinking, as exemplified by the neuron-like patterns. He concluded that Wolfgang von Strucker was working on a form of artificial intelligence. Stark revealed that he was mystified by the idea of using the A.I. to frame the Ultron Program. Banner was skeptical of the idea as it was based in the hypothetical, having never been accomplished before. He also questioned Stark's decision to not reveal their plans to the rest of the team. Stark summarized his motivations by suggesting that he sees a 'suit of armor' around the world. To which Banner suggested that it would be a cold world to live in. Ultimately, Stark was able to convince Banner to help him by proposing it could create peace in their time. Over the course of three days, the two scientists worked on merging the scepter's code with the Ultron Program. Believing they had hit a roadblock, Banner and Stark chose to enjoy the party being held at Avengers Tower. Once everyone left, J.A.R.V.I.S. awakened Ultron, who proceeded to eliminate him after telling about Ultron's meaning and existence.

Celebration
"All my friends are fighters. And here comes this one guy, spends his life avoiding the fight because he knows he'll win." "Sounds amazing." "He's also a huge dork. Chicks dig that."

- Bruce Banner and Natasha Romanoff

To celebrate the victory on HYDRA, Tony Stark organized a party in Avengers Tower, where Banner had dressed up for the people who were invited. During the party, Banner walked up to Natasha Romanoff, who was working as a bartender for the guests. Asking her about having any relationships, Banner was told that Romanoff had started to have feelings for in a flirtatious way, after telling him a sarcastic story about it. As Romanoff left the bar, Banner looked over to Steve Rogers and spoke about how she is usually much more closed off but highly relaxed around him. Banner then told Rogers that Romanoff was clearly flirting with him, but was insisted that he should not let the chance for happiness pass by, noting that Romanoff had flirted with him in the past. As Rogers walked away, Banner pondered this before questioning how much Romanoff had flirted with Rogers in the past. Once most of the guests had finally returned home from the party, the group, joined by Helen Cho, took turns attempting to lift Mjølnir. Leading the attempts was Clint Barton who was the first to try and when he failed, both Tony Stark and James Rhodes tried using Iron Man Gauntlets but still failed to even make the hammer move an inch, much to the great amusement of Thor who continued pushing the other Avengers to try out their luck during their game. When it was Banner's turn to lift Mjølnir, he struggled with his attempt to nudge the hammer with his normal form. Once he failed to lift the hammer, Banner pretended to turn into Hulk, which none of the others found funny, much to Romanoff's awkward feeling toward his situation. Thor then teased them that none of them were worthy enough to lift the hammer, causing all the others to mockingly boo him for his egotistical claims.

Attack on Avengers Tower
‎"Ultron?" "In the flesh."

- Bruce Banner and Ultron

The party was interrupted when a loud noise rang through the room before broken down robot stepped forward. Ultron claimed that all the Avengers could never be worthy, as they were all killers who wanted to protect the world but not allow it to change. Following his speech, Banner realized that it was Ultron, only to be interrupted about his appearance and that he no longer had strings holding him down. Announcing that the only path to peace on Earth was the Avengers' deaths, Ultron and some hijacked Iron Legion drones attacked the group, proclaiming humanity inferior and ready for extinction. In order not to lose control, Banner hid behind the Tower's bar with Romanoff. Ultron began mocking the Avengers, but Thor had enough and destroyed Ultron's body. However, Ultron's mind had still managed to escape by accessing through the internet.

Argument
"Tony, maybe this might not be the time–" "Really? That's it? You just roll over and show your belly, every time somebody snarls?" "Only when I've created a murder-bot."

- Bruce Banner and Tony Stark

As the team regrouped following the Attack on Avengers Tower, they discussed what had occurred, as Banner explained that Ultron had cleared out their computer files before escaping through the internet. When James Rhodes discussed the fear of Ultron getting into the nuclear codes, it was mentioned that Ultron had claimed to have killed somebody, although they still did not know who. With the team gathered any suspicions on Ultron, Stark began examining the robot to understand what caused it. He learned that it had destroyed J.A.R.V.I.S.' mainframe in a rage. Thor stormed in and grabbed Stark by the throat, accusing him of bringing destruction to the Earth. As Thor dropped from his grasp, Stark defended himself however claiming that he was coming up with a solution to end a war that would destroy the Earth. Once Stark made his argument, Banner was not convinced by Stark's claims, saying that it's not a good idea to speak on behalf since they created Ultron. Stark then recalled the Battle of New York, claiming that what was out in space would destroy them all if they did not plan ahead. As Steve Rogers claimed they could beat that threat as a team, Stark claimed that they would fail, with Rogers telling him they would still be a team. Seeking leads, the team later learned that Ultron had built himself a new body and had killed Wolfgang von Strucker in his prison cell and that he had made an alliance with Scarlet Witch and Quicksilver. Upon learning of von Strucker's death, it was noted that this was likely a smokescreen to throw them off, with all of their own information on Strucker having been deleted off their computers. Forced to use old S.H.I.E.L.D. files, the team researched anyone who was connected to Strucker who may be able to find a new lead. Stark soon pointed out Ulysses Klaue among the files, whom he had met at a weapons dealers meeting in the past. Banner researched the brand on Klaue's neck and originated it to a Wakandan dialect meaning 'thief'. As Stark and Rogers realized Wakanda was where vibranium originated from, they tracked Klaue's location to South Africa and headed there.

Duel of Johannesburg
"You listening? That little witch is messing with your mind. You're stronger than her, you're smarter than her, you're Bruce Banner. Right, right, right. Don't mention puny Banner. Okay. In the back? Dick move, Banner."

- Tony Stark to Hulk

The Avengers soon went to South Africa to keep Ultron from getting vibranium. As the others were fighting Ultron, Banner remained in the Quinjet. Wanda Maximoff found Banner and forced him to turn into Hulk using her mental manipulation powers. Under her control, Hulk started destroying the city of Johannesburg. Iron Man called upon his Mark XLIV and Veronica in an attempt to subdue the Hulk himself. Despite soon being trapped inside Veronica's enforced and electrified metal cage, the enraged Hulk had soon managed to break himself free. As the started to attack, Hulk began to attack them while civilians started to be terrified from his devastating attacks. Iron Man arrived on the scene with his equipped the Hulkbuster armor, ordering the police to "stand down" and drawing the attention of Hulk. Stark attempted to calm Hulk down through conversation but inadvertently enraged him by referring to him as Bruce Banner. Enraged even further, Hulk then threw a car at Iron Man but he managed to catch it. Hulk hit him through the car and sent him backwards, so Iron Man took off and grabbed Hulk by the neck, dragging him through the street. Hulk kicked the Hulkbuster armor, freeing himself and crashing Iron Man. During the fight, Hulk then pounced on the Hulkbuster before Iron Man could recover and severely damaged its left arm but as Hulk tore through the thick armor, Iron Man reversed the damaged arm and punched him off. Seeing that the left arm of the suit was too damaged, Iron Man ejected it and called Veronica for a replacement. With a barraged of repulsor blasts from Iron Man, Hulk punched Iron Man but he punched back with his new arm, causing a shockwave. Once Iron Man managed to grip onto him, Hulk was thrown down on the ground and proceeded to pound him repeatedly with the new arm. Hulk grabbed hold of the arm but it turned out to be a trap, imprisoning Hulk's hand. Iron Man then attempted to fly Hulk away from the city, but Hulk punched him mid-air, causing him to crash into a building full of people. Iron Man tried to sedate Hulk but Hulk kicked him into an elevator full of people. As the fight escalated into catastrophic damage, Iron Man grabbed the elevator wire before it crashed, allowing the people to escape. Hulk jumped on him but the Hulkbuster flip-kicked him away before smashing him with the elevator and punching him full in the face, making him lose a tooth. Hulk angrily spit out the tooth, scaring Iron Man enough to apologize. The fight spilled out once again, with Hulk angrily gliding the Hulkbuster across a tall building before ripping out vital components off of it. As Stark called Veronica in order to replace Iron Man's damaged parts, Hulk smashed the incoming replacement right into the carrier, destroying both of them, leaving Iron Man defenseless. Seeking to end the fight quickly, Iron Man flew high above the city, throwing Hulk into a building under construction, shooting missiles to destabilize it and ramming Hulk all the way to the ground floor, burying them both under the rubble. Once they were buried under the rubble from their duel, Hulk burst through the concrete and began to calm himself down as the South African Army arrived on the scene and civilians screaming at the site of his appearance. Seeing the armed army men, Hulk started to get angry again but Iron Man punched him in the head, knocking him unconscious. The Avengers regrouped, forced into hiding.

The Farm
"Natasha, where can I go? Where in the world am I not a threat?" "You're not a threat to me." "You sure? Even if I didn't just... There's no future with me. I can't ever... I can't have this, kids. Do the math, I physically can't." "Neither can I."

- Bruce Banner and Natasha Romanoff

With Banner back to normal and rest of the Avengers went back on the Quinjet, the public ridiculed them for Hulk's rampage. Maria Hill called Tony Stark and told him of all the reactions to the Avengers' actions in South Africa and talks for Banner's arrest. As the Avengers cope with their losses, Banner holds himself into place and tried to calm himself. The team went to Hawkeye's home, as they were surprised to learn that it was Barton's family home and that he has a wife and children. While there, Banner took a shower and when he was finished, he found that Natasha Romanoff was waiting for him. Banner explained to her that they cannot be together because he could present her a threat, but also because he cannot make children. She told him about her training in the Red Room, where she was sterilized, which made her unable to have children. After Romanoff had imposed with Banner, Nick Fury had arrived at the farm and spoke with the group at length about stopping Ultron. Banner then realized that Ultron wanted to evolve. So he needed Helen Cho and the Cradle device to build for him the ultimate body. While Banner was brought back to the Avengers Tower by Fury, the Avengers flew to Seoul to take the synthetic body from Ultron, and Stark went to the NEXUS Internet Hub in Oslo.

Birth of Vision
"I'm in a loop! I'm caught in a time loop. This is exactly where it all went wrong." "I know, I know. I know what everyone's going to say, but they're already saying it. We're mad scientists. We're monsters, buddy. You gotta own it. Make a stand."

- Bruce Banner and Tony Stark

Tony Stark and Clint Barton returned to the Avengers Tower. Barton brought with him the Cradle with the synthetic body in it, but he said that Ultron had kidnapped Natasha Romanoff, so he went to search for her. Stark revealed to Banner that J.A.R.V.I.S., who was not destroyed by Ultron as he thought, was the person who prevented from Ultron to get the nuclear codes. Stark tried to convinced Banner to help him put J.A.R.V.I.S. inside the body. At first, Banner refused but Stark claimed that it was the only hope they got to stop Ultron. Banner then agreed to help him. As the two were almost finished, Steve Rogers with Wanda and Pietro Maximoff came and ordered them to shut it down. After Banner and Stark refused, the two and Barton fight against the three with Banner personally threatening Wanda and assuring her that he could kill her without losing control and transforming into Hulk. As Stark and Rogers began attacking one another, suddenly Thor came in and revived the synthetic body with his lightning. The living body jumped out and briefly attacked Thor until he looked out over the city, the living body apologized and called itself the Vision and claimed to wish to assist them to fight Ultron. Thor explained that he had seen the Vision in his vision and the Mind Stone, one of the six Infinity Stones, that is in the Vision's forehead. At first, the team did not trust him, but as proof of his honor, Vision handed Thor Mjølnir.

Rescuing Black Widow
"You're not going to turn green?" "I've got a compelling reason not to lose my cool." "I adore you. But I need the other guy."

- Black Widow and Bruce Banner

The Avengers tracked Ultron down in Sokovia, where Natasha Romanoff was being held. While the other Avengers were busy facing off against Ultron and his sentinels, Banner managed to sneak into Ultron's lair and break Romanoff free. Determined to make good on their earlier plan to run away together, Banner told Romanoff that he did not want to change into Hulk, but Black Widow kissed him and pushed him over the edge of a well, forcing the transformation. Moments later, Banner emerged as Hulk, ready for the battle. With Romanoff clinging to his back, Hulk began jumping through the air, trying to reach the flying city of Novi Grad. Crash landing on solid ground, Hulk and Black Widow ran off in separate directions to deal with Ultron's forces.

One Last Fight
"Hey, big guy. We did it, the job's finished. Now I need you to turn this bird around, okay? We can't track you in stealth mode, so help me out."

- Natasha Romanoff to Hulk

Hulk joined the Avengers, protecting the key that could drop the city and thus cause global destruction. Ultron summoned his sentinels, and they reached the key and activated it. The team defended it and made Ultron distraught. Hulk then hit him strongly and threw him far away. Hulk was far from the battle, and Romanoff tried to calm him back to his human state. Her calming technique was interrupted by Ultron, who was at the controls of the Avengers' own Quinjet, raking Hulk with gunfire. Hulk became enraged, and Natasha was knocked out. Hulk grabbed Romanoff and bore her to safety on a newly arrived Helicarrier that had been brought by Nick Fury and Maria Hill, before leaping after Ultron. He threw him from the jet and then took control of it. After the battle was over, and the Avengers succeeded in saving the world and defeating Ultron, Hulk chose to remain in the Quinjet that Ultron had previously hijacked. Natasha Romanoff tried to make him disable the plane's stealth mode, but he cut off its communications, keeping with the stealth mode so he would not be tracked. Nick Fury later assured Romanoff that Banner was safe and alive; however, they would not be able to track him due to the cloaking systems that Stark had applied on the ship.

Champion of Sakaar
"You know, I haven't seen this beloved champion he talks on, but I've heard he's astonishingly savage."

- Loki to Thor

Piloting the Quinjet, Hulk left Earth and flew into space, encountering a wormhole which transported him to the alien planet of Sakaar. Stranded on the unknown planet, which stressed him out, Banner remained in Hulk form. During his stay there, he was taken to the Grandmaster by Valkyrie and became his champion. Over the course of two Earth years, Hulk fought in the arenas and became a famous champion. He also made sure that he would not switch back to Banner, by avoiding anything that could calm and reawaken his other self.

Duel in the Sakaaran Arena
"Banner. Hey, Banner!" "No Banner. Only Hulk!" "What are you doing? It's me. It's Thor!"

- Thor and Hulk

Beloved by the arena crowds, Hulk came to enjoy his lifestyle as the Champion of Sakaar. One day, Hulk met his newest opponent, who turned out to be none other than his former teammate and fellow Avenger, Thor. Refusing to acknowledge Thor, despite his pleads and attempts to make him calm down, Hulk fought against his former ally. A grueling duel took place as both combatants smashed and ruined the arena. During the battle, Thor managed to gain the upper hand when he summoned his lightning powers. Hulk secured his victory when the Grandmaster activated the taser that has been implanted on Thor's neck. Hulk gain the upper after Thor was incapacitated from the Obedience Disk, he jumped up several feet up in the air and punched Thor to the ground, leaving him unconscious.

Relaxing with Thor
"You just can't go around throwing shields at people, you could have killed me." "I know, I'm sorry! I just get so angry all the time! Hulk always... always angry."

- Thor and Hulk

Following their fight, Thor was brought to Hulk's room in the Grandmaster Palace. Thor had eventually awoken inside with a team of nurses tending to his injuries. Getting to his feet, Thor put his armor back on before exploring the room, discovering that Hulk was also there. The Hulk was taking a bath at that moment, as Thor first confirmed that the Hulk would not attempt to attack him again. They resumed their conversation. Thor began questioning Hulk about exactly how he had managed to get into Sakaar, becoming frustrated as Hulk struggled to answer his questions. When the Hulk claimed he had gotten where he was by winning at the Contest of Champions, Thor insisted that he had won by cheating since the Grandmaster had activated his Obedience Disk. Hulk revealed that he arrived in the Quinjet by imitating the crash landing noise in the bathtub. Thor then asked where is it to which Hulk walked by Thor while naked and then showing where it was in a scrapyard. Thor asked Hulk to come to Asgard with him and ensure that Hela could not cause Ragnarök. Hulk decides to stay as Thor kept pleading for Hulk's assistance, but Hulk yawned at the idea and refused to acknowledge their friendship since he believed that Thor liked Banner better. Hulk also refused to return back to Earth as he believed that everyone hated him there following the Duel of Johannesburg. Although Thor attempted to convince Hulk that everybody loved him since he was a member of the Avengers, Hulk insisted that Thor was only friends with Bruce Banner, which Thor denied by claiming that he did not even like Banner. Hulk still refused and Thor made his way out while insulting the room. However, Thor was electrified by the door and Hulk laughed hysterically at him. Hulk puts back on his Sakaaran Battle Armor and tells Thor that he goes under training with Valkyrie for his next fight with the Contest of Champions. As Hulk reaches the door Valkyrie asked him how he was doing to which he replies that he has been winning the tournament. Once he was alone, Thor had meditated and attempted to come into contact with Heimdall back on Asgard. At night, Thor attempted to rip out of his Obedience Disk out of his neck once again to which he had no luck as it had instead caused him considerable pain. Waking up in his bed and seeing this, Hulk noted how sad Thor looked, to which Thor simply told him to shut up as he sat alone and contemplating his next move. Hulk pushed him over and still continued teasing him, the annoyed Thor rebutted that he was furious to what had happened to his home, the death of father and losing his hammer before he had become imprisoned by the Grandmaster. Hulk decided to ignore and irritated with Thor's complaints, Thor furiously accused him of not listening and began kicking some stuff towards the Hulk. Hulk furiously told Thor to stop kicking stuff, to which Thor responded by claiming that the Hulk was known as the stupid member of the Avengers, as the Hulk called Thor the tiny Avenger. As his temper rose, Hulk threw a shield at Thor which nearly decapitated him, resulting in Thor angrily claiming that everybody on the Earth hates Hulk. Eventually, they managed to reach a cordial ground and Thor convinced Hulk to call on his sparring partner, Valkyrie to his room.

Return to Banner
"The city. Sokovia. Did we save it?" "Banner, listen." "What?" "Sokovia, Ultron. That was two years ago." "What are you saying? I've been Hulk for two years?"

- Bruce Banner and Thor

The next day, Hulk did as Thor requested and had Valkyrie come up to his chamber, as together they playfully sparring with each other as the Hulk played with the Sakaaran War Hammer while Valkryie kicked him over. Thor then revealed himself in the room, awkwardly trying to look impressive before Valkyrie simply ignored him and prepared to leave the room, as she claimed that Thor was too thick headed to see she was in Sakaar only to hide away from her problems. As Valkyrie was about to leave, Hulk threw part of his bed to ensure she did not leave. Valkyrie agreed to listen to Thor, as the two conversed about the threat of Hela would bring to Asgard. Though unsuccessful in bringing Valkyrie over to his side, Thor managed to get the remote for his Obedience Disk and took the implant off. With that, Thor took a ball that Hulk was playing with and used it to crack the room's glass window, although this resulted in the ball bouncing back and striking Thor's face. Getting back onto his feet, Thor immediately made his escape toward the Quinjet. Hulk was distraught at leaving him behind and preceded to follow him. As soon as Thor could take off and escape from Sakaar, Hulk immediately tried to stop him from leaving, damaging the Quinjet in the process. During his attempt, Thor turned on Natasha Romanoff's recording back during the Battle of Sokovia. Seeing her, Banner was able to awaken and transform back into himself, despite Hulk's attempts to prevent it from happening. Confused by his surroundings, Banner was confronted by Thor and was told to calm down.

Hunted by the Grandmaster
"Why are you being so weird?" "I don't know, maybe the fact that I was trapped inside a monster for the last two years made me a little weird!"

- Thor and Bruce Banner

Returning back to his senses, Banner found himself in the Quinjet and met with Thor. He quickly asked what happened to Ultron and Sokovia. Banner was shocked to be informed that while they won the fight, that event happened two years ago. With no memories of what happened in the past two years, it dawned to Banner that his relation with Hulk is starting to change; he compared it to previously both of them having a hand on the wheel, but this time it was like Hulk stuffed him in the trunk. Banner voiced his fear to Thor that if he ever transformed back to Hulk again, he might not be able to come back. They did not have long to catch up. Soon they heard an announcement from the Grandmaster that they are hunting Thor, due to believing that Thor has captured Hulk. Much to Banner's annoyance, Thor forced him to wear the only available clothes in the Quinjet; they belonged to Tony Stark, which were a tight fit for Banner. The two former Avengers made their escape from the Quinjet and start making their way through the city. Though Thor attempted to keep Banner calm, he only succeeded in agitating Banner even further. The two discussed leaving Sakaar and fighting Hela, however Banner made it very clear he was tired of fighting evil beings and only wanted to go back to Earth to be left in peace, and felt Thor was only using him to get to Hulk. However, Banner agrees to accompany Thor back to Asgard on the condition that he doesn't have to think about Hulk ever again. Eventually, amidst a Hulk parade, they encountered Valkyrie. She has decided to join Thor in his fight against Hela. She brought them to her apartment, where she has chained and captured Loki. They decided to steal the Grandmaster's ship and escape through the biggest portal of Sakaar. Banner and Valkyrie remarked that they seemed familiar to one another, however, Thor dismissed this and hid Banner's link to Hulk from her in case she changed her mind about helping them to take Hulk back to the Grandmaster.

Escape from Sakaar
"It's a leisure vessel." "What?" "Grandmaster uses it for his good times, orgies and stuff." "Did she just say the Grandmaster uses it for orgies?" "Yeah. Don't touch anything."

- Valkyrie, Thor and Bruce Banner

Banner stayed with Valkyrie while Thor and Loki went to steal the Commodore which belonged to the Grandmaster. During their escape, Thor forced Banner to steer the ship while he assisted Valkyrie with fighting off their pursuers. Banner unwittingly made Topaz crash into a rock when he turned on the ship's fireworks in his attempts to assist his allies. Banner handed the control to Valkyrie and traveled with his allies to Asgard.

Turning Back Into Hulk
"Hulk, stop! Just for once in your life, don't smash!" "Big monster!"

- Thor and Hulk

Banner and his allies arrived in Asgard, onboard the Commodore. Thor headed back to the throne room to confront Hela, while Banner stayed with Valkyrie to prepare and assist the remaining Asgardians with the evacuation. They immediately went to Rainbow Bridge to assist the Asgardians. When Fenris was blocking their path, including Skurge and Hela's forces attacking them from behind, Banner decided to turn back into Hulk in order to prevent the Asgardians from getting slaughtered, despite knowing that he might not be able to turn back into himself. Banner jumped off the ship, humorously landing and injuring himself at first, Fenris tries to sniff out Banner to see if he's alive, but showing no signs of it. Hulk resumed control and immediately battled against the wolf. They fought fiercely and eventually their battle forced them off into the sea where they continued to battle. Hulk managed to defeat Fenris by throwing the wolf off the edge of the sea and into the void. Hulk got back on the Rainbow Bridge and saw Surtur destroying Asgard. Hulk immediately charged into battle and jumped onto Surtur's face. Despite throwing punches at him, Surtur thew Hulk back onto the bridge. Before he could resume his battle, Thor shouted at Hulk to stop and don't smash, but wanted to fight Surtur; however, Valkyrie convinced Hulk to stand down as they wanted Surtur to destroy Asgard so that Hela could be killed. Hulk helped his allies escape onto the Statesman, commandeered by Loki and Korg.

Joining Thor
Hulk boarded up inside the Statesman, with the rest of the Asgardians and alongside his allies, witness Asgard being destroyed by Surtur. In a brief coronation, Hulk joined its new king, Thor, on their trip towards Earth. Hulk is aboard the Statesman when it is approached by the Sanctuary II, a vessel commanded by the warlord Thanos.

Attack on the Statesman
"Your optimism is misplaced, Asgardian." "Well, for one thing, I'm not Asgardian. And for another... we have a Hulk."

- Thanos and Loki

Thanos and the Black Order attacked the Statesman, which was carrying the surviving Asgardians, so they could take the Tesseract and the Space Stone within. After they killed or otherwise subdued most of the Asgardians on board, Loki unleashed the Hulk. Hulk proceeded to savagely beat up Thanos but once he had Thanos pinned into a wall, he soon found the Titan's strength to be superior to his own and his grip on Thanos was quickly overcome and he was subsequently punched by Thanos in the face with enough force to briefly daze him. To his complete surprise, Thanos displayed a vast superiority and soundly beat him within an inch of his life using his superior fighting skills, speed and strength. A badly injured Heimdall used the last of his power to muster enough dark magic needed to conjure a Bifrost Bridge, with which he sent an unconscious Hulk away from the battle and to the New York Sanctum on Earth. Thanos killed Heimdall and Loki and destroyed the ship, seemingly killing the rest of those on board, including Thor.

Crashing to Earth
"Thanos. He's a plague, Tony. He invades planets. He takes what he wants. He wipes out half the population. He sent Loki. The attack on New York. That's him." "This is it... What's our timeline?" "No telling. He has the Power and Space Stones, that already makes him the strongest creature in the whole universe."

- Bruce Banner and Tony Stark

Traveling to Earth, Hulk crashed through the roof of the New York Sanctum in New York City, creating a massive crater in the building's staircase. As Doctor Strange and Wong investigated, they found Hulk reverting to the form of Bruce Banner, warning them that Thanos was coming. Shocked, Strange asked Banner who Thanos was, but Banner insisted on contacting Tony Stark first. Doctor Strange summoned a portal to Stark, and Banner was reunited with his Tony and Pepper Potts.

In the Sanctum, Wong and Strange explained the Infinity Stones to Stark and Banner. Upon Banner once again telling Thanos' name to Stark, he revealed that he is the culprit of the Chitauri Invasion from some years ago and that he has the Space and Power Stones. When Strange and Stark argued over what to do with Strange's Time Stone, Banner quickly stopped their bickering, stating that they must find Vision to protect his Mind Stone, only for Stark to reveal that he is off the grid. When Stark suggests that Steve Rogers could find him, Banner told Stark to call Rogers. However, Stark revealed that the Avengers had separated after a fight between Stark and Rogers.

Attack on Greenwich Village
"Where's your guy?" "I don't know. We've sort been having a thing." "There's no time for a thing. That's the thing right there. Let's go. Dude, you're embarrassing me in front of the wizards." "Tony, I'm sorry. Either I can't or he won't."

- Tony Stark and Bruce Banner

Just as Banner convinced Stark to call Rogers telling him that what happened during the Avengers Civil War is nothing compared to Thanos, Ebony Maw and Cull Obsidian arrived to secure the Time Stone from Doctor Strange. In the confrontation, Banner tried to turn into Hulk. Hulk, however, refused to come out, forcing Stark to use his new armor which generated repulsors out of nothing to blast Obsidian. A shocked Banner asks where they came from, with Stark revealing the armor to be made of nanotechnology. While Iron Man went to fight Obsidian, Strange teleported Banner away for his safety. When Stark himself ended up in the park Banner was sent to, he asked about the conflict, only for Stark to remark that it was getting worse. Banner then tried to call Hulk again, only for Hulk to directly refuse his orders, before watching Stark and Spider-Man fight Cull Obsidian. Once Ebony Maw left with a captive Doctor Strange, Banner watched Wong leave to secure the Sanctum, before contacting Steve Rogers with the phone he had given to Stark.

Reunion with Avengers
"There's an Ant-Man and a Spider-Man? Okay, look. Thanos has the biggest army in the universe. And he is not gonna stop until he gets... Vision's stone."

- Bruce Banner

Banner reunited with his former Avengers teammates at the New Avengers Facility, including an awkward greeting with Natasha Romanoff, who had returned from saving Vision and Scarlet Witch in Scotland. Now reunited with most of the Avengers, Banner asked where Hawkeye was, knowing that they must need all the help possible, only to be told that he is on house arrest along with Scott, whom Rogers revealed to be Ant-Man. Upon resuming their conversation, the team would decide what to do with Vision, who suggested to destroy the stone even if it would kill him. Unwilling to kill their friend, Banner proposed the difficult task of removing the Stone from Vision to safely destroy it without needlessly taking Vision's life. Rogers suggested taking Vision to Wakanda, the only nation on Earth with the resources capable of achieving this.

Battle of Wakanda
"Guys! Vision needs backup now! Hulk. Hulk, I know you like making your entrance at the last second. Well, this is it, man! This is the last, last second! Hulk. Hulk! Hulk!" "No!" "Oh, screw you, you big green asshole! I'll do it myself!"

- Bruce Banner and Hulk

The Avengers took Vision to the lab of Shuri, who worked with Banner to find a way to remove the Stone from Vision. The Black Order then arrives in Wakanda to get the stone. In order to stop them, the Avengers got the Hulkbuster armor for Banner, who managed to pilot it successfully until he hit a rock and nearly fell. Banner would help in the Hulkbuster armor by firing repulsor blasts at the Outriders. However, Banner noticed that the limited success of the direct forward assault caused the Outriders to begin to circle the barrier to flank the armies instead. Should the Outriders breach the barrier behind them, they had a clear path to the vulnerable Vision in Shuri's Lab. During the battle, Banner, Barnes, T'Challa and Rogers were mobbed and forced to the ground by sheer numbers of Outriders. However, they were suddenly wiped out when the Bifrost Bridge beamed down from the sky into the center of the battlefield. Thor, armed with Stormbreaker, Rocket Raccoon and Groot stepped out of the Bridge into the battlefield confronting the Outrider armies, with Banner happy to see that his friend survived the attack on the Statesman. Later, Vision would get attacked by Corvus Glaive with Banner quickly arriving to assist against Cull Obsidian and Glaive. Banner engaged in a ferocious duel with Obsidian. Falling into a nearby waterfall, Banner called for reinforcements to stop Glaive as he fought. However, Obsidian began to gain the upper hand, severing the Hulkbuster's left arm. In response, Banner attempted to bring out the Hulk to turn the tables, to no avail.

Thanos' Victory
"Cap. That's him."

- Bruce Banner to Captain America

Frustrated, Banner resolved to handle Obsidian himself, managing to trap the latter's arm in the severed Hulkbuster arm. Activating the arm's repulsor thrusters, Banner sent Obsidian flying into the Wakandan energy barrier, where he violently exploded. After the Black Order and the Outriders were defeated, Thanos arrived in Wakanda where Banner confirmed his identity. Thanos began slowly advancing towards Vision and Banner made the first strike, only for him to phase Banner out of space using the Space Stone. When Thanos snapped his fingers upon completing the Infinity Gauntlet, half of the universe was disintegrated into ash, leaving Banner as one of the survivors with Steve Rogers, War Machine, Black Widow, Thor, Rocket Raccoon, M'Baku and Okoye, having his head exited out of the Hulkbuster Armor and bowing his head in despair over Thanos' victory.

Meeting Captain Marvel
"We don't even know what this is." "Fury did. You tell me the second you get a signal. I wanna know who's on the other end of that thing."

- Bruce Banner and Natasha Romanoff

Following the Battle of Wakanda, Banner, along with Steve Rogers, Natasha Romanoff and James Rhodes, returned to the New Avengers Facility. Having discovered the Transmitter Pager Nick Fury had activated prior to his death, the Avengers bypassed the pager's battery in order for it to continue to send out its signal. As Rogers and Romanoff were witnessing reports on the aftermath of the Decimation, Rhodes, who was monitoring the pager, informed the pair and Banner that the pager had stopped transmitting the signal.

Rogers requested that they reboot the pager and resend the signal, only for Banner to respond that they had no idea what the signal was for. As Romanoff explained that Fury knew whom the signal was for and that she wanted to know who it was as well, she came face to face with Captain Marvel herself, who demanded to know where Fury was.

Personality
"For all the destruction Hulk has caused over the years, he's done that only after we attacked him. In fact, whenever he's seen innocents threatened, Hulk has gone out of his way to protect them. Suggests to me that buried within that raging monster beats the heart of a hero."

- Nick Fury

Bruce Banner is shown as a mild-mannered, mysterious, shy and analytical man of science. The incident at Culver University caused Banner to become somewhat mentally troubled and obsessed with finding a cure for his mutation. He is compassionate and afraid of hurting someone unintentionally, so he tries not to get close to something or someone that leaves him stressed.

In turn, Hulk is more primitive with his senses amplified to such an extent that it is difficult for his brain to process it all. In Banner's own words, he describes the experience as "It's like someone poured a liter of into my brain." When Banner returns to his normal human form, he has little recollection of events aside from fragments and images.

In his earliest transformations, Hulk appeared as a savage with no real ability to distinguish friend from foe. Because of this, he was responsible for the deaths of two scientists, an army officer, a police officer from Idaho, and two Canadian hunters when he was a fugitive. However, while extremely aggressive and destructive, Hulk only attacked when provoked as a form of self-defense and wanted to be alone, often fleeing and ending up in areas uninhabited by humans like caves or forests to calm himself.

Ever since his first transformation Banner was terribly afraid of Hulk and the risk of him hurting those around him. He abandoned everyone and everything he cared about and became a fugitive for five years to prevent Hulk's power from falling into the wrong hands, while desperately searching for a cure and attempting to avoid transforming at all costs. On some occasions, he lost the hope of getting rid of his other persona and showed suicidal tendencies, attempting to kill himself once. The only times he was willing to let himself transform was during the Battle of New York, when attempting to intimidate Scarlet Witch, as he was angry with her for having set Hulk loose on Johannesburg, to the point where he threatened to kill her without even transforming, and when he tried to protect the Asgardians from Hela, her army of Berserkers and the Fenris. Despite this, he still dislikes having to transform into Hulk to battle, as it would require him to harm and kill others, which he expressed after the Attack on the HYDRA Research Base, as Thor commented on Hulk's kills and inadvertently made Banner feel ashamed and regretful.

Hulk keeps fragments of Banner's personality and gradually attained a better reasoning capacity over time, becoming able to show affection, demonstrating a capacity to work collaboratively with others once they've established a rapport with him, be aware that his name is "Hulk", and demonstrating he's capable of directing his savagery at foes instead of allies. Betty suggested that this is because Banner's mind is still within Hulk and can influence his behavior. Over time, he supplemented his scientific pursuit by learning meditation and breathing techniques, gaining a greater control over the transformations. Banner discovered that by focusing during the moment of transformation he can control Hulk's destructive behavior or at least "aim" it at a desired target, first seen during the Duel of Harlem. Banner usually has a love interest to act as Hulk's handler and soothe him back into his normal state. Hulk would check his aggression if Betty Ross desired it and would be given a lullaby to lull him into a calmer state by Black Widow.

After having shown some success in controlling the monster, he seemed to have abandoned the search for a cure and redeemed himself, helping sick people in poor areas of the world. Thus, he appeared to be more comfortable and sarcastic in various situations with fellow Avengers. He is no longer even afraid to get angry as it no longer triggers a transformation instantly. Tony Stark encouraged Banner to see Hulk as an ally rather than a destructive curse by pointing out that Hulk technically saved his life when the Gamma exposure accident occurred. Eventually Banner became confident enough to bring out Hulk voluntarily knowing he won't attack his allies. By the time Thor found Hulk while trapped in Sakaar, Hulk became intelligent enough to speak, albeit somewhat rudimentary.

However, Banner is the Avenger his teammates are the most wary of despite their camaraderie and often don't call Hulk to a battle unless strictly necessary. Though Banner is able to suppress his transformations through emotional intelligence, he has been known to lose control or be manipulated into lose control. Should he be completely overwhelmed with rage or stress, he loses all reason and becomes a volatile rage monster. Because of this, Banner had requested Tony to build the Hulkbuster armor. For example, he once attacked Black Widow on the Helicarrier, when they were blasted out of the lab and he transformed and attacked her, and when the Scarlet Witch used her mental manipulation powers on him in South Africa to force him to transform. After the War against Ultron, Hulk himself decided to abandon his Avengers friends much like he did when he defeated Abomination.

During his time in Sakaar, Hulk's control over Banner's body increased significantly, to the point that he was able to stay as Hulk for two whole years and prevent himself from reverting back to Banner. His increased self-awareness gave him increasingly visible layers of personality, similar to a five-year-old's, instead of just being a very destructive rage monster. Hulk became intelligent enough to acknowledge his human half but repeatedly refuted Banner's existence, claiming "No Banner, only Hulk!", though he did so out of resentment and bitterness for Banner. While he gained more self-awareness and personality, Hulk was still susceptible to emotion and could easily become more savage due to stress and frustration, such as when he fought Thor in the Contest of Champions. Despite this, he could still demonstrate a calm and stable demeanor, which allows him to not solely act aggressive and hostile, such as when he talks calmly with Thor after the two of them argue and befriend Valkyrie during his stay on the planet. However, Hulk was also wary of others, due to his history of violence on Earth, which caused him to believe that humanity hated him and made him refuse to return. Upon regaining control, Banner became afraid of Hulk once more, baffled at the fact that Hulk existed for more than two years, inferring that transforming again would likely result in Hulk gaining full control and the ability to indefinitely suppress Banner.

Hulk's time on Sakaar allowed him to form his own identity. Having risen to the top of the ranks and becoming the Grandmaster's Champion, Hulk enjoyed a celebrity lifestyle. This was as close to a "normal life" that he was able to enjoy. During such time, he was able to develop his emotions beyond just anger. His interactions with Valkyrie and Thor demonstrated his playful nature. In addition, upon hearing that Earth hated him, Hulk appeared genuinely upset. This fortifies the notion that Hulk doesn't want to be alone as he claims. This was highlighted when he begged Thor to stay on Sakaar as his friend. Unfortunately, Hulk's low emotional intelligence and raw strength provide a combination that creates a being who cannot easily co-exist with others. Tragically, Hulk may be the loneliest Avenger yet the one who needs friends the most.

Because Hulk has never lost a fight before; his experience and growing intelligence in Sakaar reinforced the idea and image so much that he believed himself to be invincible, no longer a primitive rage monster like when he first came into existence, and now capable of grasping a wide spectrum of emotions, the defeat at Thanos' hands traumatized Hulk tremendously; he has since grown so fearful of the Titan and his forces that he outright leaves Banner alone to fend for himself for the first time since his creation, to the extent staunchly refusing to transform and come out to fight even when told to.

Banner ironically realizes that despite getting his wish of being cured of the Hulk, this has left him vulnerable and unable to help his teammates directly as he has lost the strength gained from being the Hulk. However, despite this, Banner displays great courage by fighting in the Battle of Wakanda wearing the Hulkbuster Armor, even facing Thanos again without fear.

Powers
"I'm a huge fan of the way you lose control and turn into an enormous green rage monster."

- Tony Stark to Bruce Banner

Transformation: Bruce Banner subjected himself to a recreated version of the Super Soldier Serum in an attempt to develop a result similar to the original Project Rebirth from World War II, albeit substituting vita radiation with gamma radiation. As a result, Banner is able to transform into Hulk when his heart rate increases to high levels or he loses control of his emotions. And as Hulk, Banner is a giant green-skinned humanoid with immense strength fueled by his rage, meaning the angrier he gets the stronger he becomes, and is one of the most powerful beings on Earth. According to Samuel Sterns, the transformation is triggered when an electric pulse generated on the amygdala increases the gamma radiation of Bruce's cells. Betty Ross' reagent allows the cells to absorb the energy temporarily, which then abates, resulting in a chemical reaction that produces a myostatin primer. When Hulk transforms back into Banner, the excess muscle mass and energy is dissipated. The total time of transformation falls anywhere between seconds to several minutes, depending on the initial adrenaline surge, which will be determined by the original stimulus. Despite Banner's initial inability to control the transformations, he managed to attain some level of control through training and practice, and Banner's consciousness is buried within Hulk, influencing his behavior to a very limited extent. Shortly before being part of the Avengers, Banner became able to trigger his transformations at will, remaining angry in a controlled state, which allowed Hulk to be much smarter and self-controlled in battle. However, the more stressful or provoking his surroundings, the more difficult it is for Hulk to become calm enough to transform back into Banner, which leads to the Natasha Romanoff using her "lullaby" technique to calm Hulk at the end of each battle. Despite Banner previously being able to control Hulk, his alter-ego was slowly becoming more self-aware and developing a mind of his own. After the events of Sokovia, Hulk left Earth and became a gladiator on Sakaar, keeping Banner suppressed for two years. After meeting Thor, Banner re-emerged and, despite realizing that transforming again would mean that he might not change back, willingly unleashed Hulk to aid Thor and the Asgardians. Following this battle, Hulk fought Thanos one-on-one and was effortlessly defeated. Hulk has since refused to come back, as he has grown fearful of the Titan and his forces, leaving Banner to fend for himself. "He threw a forklift truck like it was a softball! It was the most powerful thing I'd ever seen."

- Emil Blonsky


 * Superhuman Strength: Hulk´s primary power is his immense superhuman strength. His incredible strength allows him to rip steel apart as if it were made of paper, to break vehicles with a single punch, stop a speeding Humvee in its tracks by stomping it into the ground, leave a dent after punching a wall made of an extremely durable silicon-carbide vibranium alloy, injure and halt a massive Leviathan with a single punch, do a powerful thunderclap to stop a military helicopter from blowing up, or catch a HYDRA tank struck by Thor during the Avengers assault on the HYDRA Research base in Sokovia and proceeded to throw it at a considerable distance as well. In combat, Hulk often uses his strength to throw heavy objects (like cars, forklift trucks, HYDRA tanks for example) or his smaller opponents in order to defeat his enemies, such as when Hulk threw a human-sized Emil Blonsky more than 40 feet away with a single kick or when he hurled Loki around repeatedly while holding him by the leg. Overall, few individuals have been able to match or surpass Hulk's strength, such as the Abomination, who despite his greater base level of strength ultimately succumbed to Hulk's when he endangered the life of Betty Ross, angering him enough to overpower the gamma monster. Thor, who Hulk was able to hit hard enough to cause his nose to bleed, send flying with a punch, and upon growing angry, managed to almost overpower him in the Contest of Champions, although he was himself almost overpowered after Thor gained his full powers, Iron Man, who had to develop a special Hulkbuster armor to battle him in case of need and still needing Hulk to calm down to overpower him, Fenris, who had managed to contend with Hulk in their battle, but was ultimately hurled into outer space by Hulk, Surtur, whom Hulk was able to slightly stagger with a leaping blow, before Surtur effortlessly swatted Hulk away, and Thanos, who Hulk managed to surprise and stagger with his blows; however, Thanos effortlessly struck him with various blows and knocked him out, leaving him unconscious for a short amount of time.
 * Super Leaps: Hulk's strength also extends to his legs, allowing him to leap great distances or great heights with precision, such as when reached the top of Stark Tower from ground level in a single leap. Carrying Black Widow on her back, Hulk was able to make enormous jumps through the air, reaching the flying city of Novi Grad. Hulk was also able to leap several hundred meters from the Rainbow Bridge towards Surtur and launch himself onto the Statesman while grabbing Thor and Valkyrie.
 * Superhuman Durability: Hulk is able to withstand blows and attacks of considerable force; even high caliber bullets bounce off him and flames cause him little damage. His bone, skin, and muscles have an extreme density and he possesses a high degree of resistance to injury, pain, and disease. Hulk also withstood multiple energy blasts from Chitauri weaponry, extreme cold in the Arctic, great impacts from heights of several miles (though the impact knocked him unconscious, forcing him to revert back into Banner). In addition, Iron Man noted the amount of gamma radiation Banner was exposed to would have killed him if it had not given him the ability to transform into Hulk. Only beings with incredible force or extremely powerful weapons can harm him, such as when Hulk was painfully pierced by Abomination's skeletal spikes, was later painfully pierced by Fenris' teeth, when a blow from Thor wielding Mjølnir knocked him out for a moment and when Thanos badly beat him. While Hulk did survive quite a few blows from the Hulkbuster with little discomfort, he got a tooth knocked out in the confrontation. In addition, Hulk's durability is also tied to his anger level - during the fight against the Hulkbuster, he slightly calmed down, which slightly reduced his durability after witnessing the destruction that he caused in South Africa, allowing Iron Man to use the advantage, hammering Hulk with a massive punch, which sent him flying into a tall building, knocking him out. Similarly, during the Contest of Champions when Thor sent Hulk flying with a strike from the Sakaaran hammer, Hulk was further enraged to the point that he managed to block the next hammer blow with a single hand. However, after Thor had his powers fully enhanced (from a vision of Odin's spirit), Hulk was visibly dazed by a single lightning-charged blow from Thor. Hulk's skin was also pierced and noticeably wounded by Fenris who bit him several times, forcing Hulk to throw him into the void. When fighting Thanos, Hulk managed to withstand many blows from the Mad Titan, though he was noticeably stunned and was soon pummeled into submission, to the point where the Hulk refused to transform back anymore.
 * Superhuman Speed: Regardless of his size, Hulk's superhuman strength of his legs allow him to run at speeds that are far beyond the natural physical limits of a human being. He also possesses enhanced reflexes and agility proportionate to his size, but his large size can still be exploited by smaller foes to use to their advantage.
 * Superhuman Stamina: Hulk has substantially greater endurance than a normal human, allowing him to run and fight for a long time. His enraged state, during a fight, allows him to maintain peak output for hours on end and still continue to become even stronger as his anger escalates.
 * Regenerative Healing Factor: Should he receive damage that penetrates his extreme durability, his biology has a very high rate of cellular regeneration. Grievous bodily harm has also proven to be a trigger for Banner's transformations, and he has recovered from otherwise fatal injuries sustained in his normal form. Banner said he tried to put a bullet in his mouth but the "other guy" merely spit it out. Hulk also has an enhanced immune system; Samuel Sterns described that a synthesized sample of Banner's blood would make humans impervious to diseases. These attributes make him extremely difficult to kill, even if he is in his human form. Mere moments after his fight with Fenris in which Hulk suffers a deep puncture wound in his leg, no wound or scar tissue is seen.

Bruce Banner's Abilities
"Okay, How many Ph.D.'s does Hulk have? Zero. How many Ph.D.'s does Banner have? Seven."

- Bruce Banner to Thor

"Who did you say created this technology, again?" "Bruce Banner." "Then I'm sure it'll go off without a hitch."
 * Genius-Level Intellect: Bruce Banner is among the smartest humans in the world, on par with Tony Stark's own level of intellect. Hence, Banner achieved his doctorate at Harvard University and worked as a biochemistry and radiophysics professor as Culver University. Phil Coulson once compared him to, and Banner is one of the few modern scientists famous and prominent enough to be pictured in the science lab of Midtown School of Science and Technology. Banner is also fairly disciplined in emotional intelligence, particularly in meditative breathing techniques and anger management, due to his experience with attempting to control and reign in his Hulk persona. He is the foremost expert on gamma radiation.
 * Master Scientist: Banner is ingeniously resourceful and brilliant in many different fields of science, notably biochemistry, and bio-organic, as well as both atomic and radio-physics, being a former professor at Culver University, and one of the world's most renown scientists overall. Banner was able to replicate to a certain degree the Super Soldier Serum, a feat many other scientists were unable to accomplish. Indeed, even fellow genius Tony Stark admired Banner's brilliance, claiming that the latter's work on anti-electron collisions is unparalleled, while Nick Fury referred to Banner as the world's foremost expert in gamma radiation. In addition, Stark needed Banner's assistance in downloading J.A.R.V.I.S. into Vision, due to Banner also being the world's foremost expert in the discipline of bio-organics. Stark himself admits to Banner surpassing him in the fields of radio-physics, particle collisions, and bio-organics.

- Phil Coulson and Leo Fitz

"He made it five years and got across borders without making any mistakes."
 * Master Engineer: Banner, while not quite on par with Tony Stark, is an extremely skilled engineer, computer scientist, and robotics technician. Hence, Banner was able to help Stark construct the Hulkbuster, create the Ultron AI, and download J.A.R.V.I.S. into the Vision android.
 * Physician: Banner possesses enough medical knowledge to help the sick and injured while living in India.

- Thaddeus Ross

"No! I don't know how to fly one of these!" "You're a scientist, use one of your PhDs." "None of them are for flying alien spaceships!"
 * Expert Tactician: Banner has over the years become an expert in developing strategies to go unnoticed and run from the government, military, and even S.H.I.E.L.D. by using his intellect to quickly evaluate his surroundings and develop feasible escape strategies. As such, Banner also became quite skilled at going undercover.
 * Martial Artist: Banner learned Brazilian Jiu-Jitsu and basic meditative breathing techniques in Brazil from a martial arts expert. By the time of the Battle of Wakanda, Banner seems to have undergone considerable improvement in skill, as he is able to defeat many Outriders and even hold his own and eventually best Cull Obsidian.

- Bruce Banner and Thor


 * Pilot: Despite admitting himself that he does not know how to fly ships, Banner was nevertheless shown able to fly a couple of aircrafts, this being the Quinjet and an alien spaceship known as the Commodore just well enough to avoid any severe damage, although he struggles first. He also was able to pilot the Hulkbuster armor effectively despite having never used it before.
 * Multilingualism: Banner speaks his native English, as well as some Hindi, Spanish, and Portuguese. However, he only demonstrated fluency in Hindi, while in Kolkata, and had notable trouble with Spanish and Portuguese while in South America, occasionally mixing up words. According to his S.H.I.E.L.D. file, Banner can speak English, Latin, Portuguese, Malay, and Punjabi.

Hulk's Abilities
"The gates of Hel are filled with the screams of his victims."

- Thor


 * Expert Combatant: As Hulk, while having no formal training from the beginning, he is a formidable and experienced hand-to-hand combatant simply due to his great physical attributes. Hulk often engages his enemies using brawling techniques and street fighting skills that make full use of his incredible strength and also employs pieces of his immediate environment to fight with, often using them as range projectiles to strike distant targets, while sometimes for melee attacks or protection. While training and fighting in the Grandmaster's Contest of Champions, however, Hulk demonstrated much more combat skill than before, as he wielded a huge hammer and battle-axe like a common gladiator in the arena and his prowess allowed him to kill all of his competitors. His improved skills allowed him to compete against Thor himself, although Hulk had to rely on surprise attacks to gain the upper hand and when against the newly empowered Thor because simply, Thor was a lot smaller and faster than Hulk in a close quarter combat, Hulk was quickly outclassed and was only able to win due The Grandmaster interfering with the battle to ensure Hulk won to keep Thor imprisoned. He also still depends on using his physical attributes to dominate in a hand-to-hand fight, with his style still having little subtlety and technique, which can prove to be a debilitating issue when confronted by opponents of equivalent, if not even superior physical power, with far greater experience, as against the even stronger Thanos, whose fighting experience was thousand years ahead of him, Hulk was able to land a few blows on the Titan until he was caught off-guard after Thanos recomposed himself, Hulk was no match for Thanos, who eventually beat him with aid of his combat skills and the Power Stone already inserted to ensure his victory.
 * Minor Fluent Communication: Initially, Hulk was only able to speak very short lines and only in extremely rare occasions, most of the time he communicated with others with roars and gestures, much like an animal would. After having stayed in his Hulk form for 2 years on Sakaar; however, Hulk's ability to speak improved enough for him to have casual conversations with Thor and Valkyrie, however, his vocabulary is still very limited and rudimentary.

Weapons

 * : Banner used this revolver in his unsuccessful suicide attempt. He ended up shooting himself, but Hulk responded quickly enough to heal the damage and crush the gun.
 * Sakaaran Battle Axe: As he became a gladiator, Hulk had gained a large special metallic battle axe that suitable to his own size.
 * Sakaaran War Hammer: With him as a gladiator, Hulk had also obtained a special metallic war hammer that aids him with battling others in the arena.

Other

 * Wrist-Mounted Cardiovascular Monitor: A gauge used to monitor Banner's heart rate, helping him to prevent a transformation into Hulk. The first monitor was destroyed after Banner's transformation in Brazil. The last one seen was given by Betty Ross and seized by United States Army.
 * Laptop Computer: A cheap laptop with an encrypted instant messaging software installed. Banner used it to chat with Samuel Sterns. Banner always carried it in a backpack, so he could maintain a communication where he was.
 * Stretchable Pants: After the Battle of New York, Bruce Banner became a consecrated member of the Avengers, he acquired a uniform with the main feature of stretching to fit his Hulk physique after his transformations. He uses a pair of trousers made with flexible microfiber fabric, the material of which was shown to be extremely durable on several occasions, like when the team attacked the HYDRA Research Base, Banner turned back into Hulk with his pants still intact.
 * Iron Man Armor: Mark XLIX: Since Hulk refused to come back following his defeat by Thanos, Banner had to use the Hulkbuster 2.0 Armor of Tony Stark to fight Thanos' army during the Battle of Wakanda.
 * Hulk's Stretchable Suit: To be added
 * Advanced Tech Suit: To be added

Vehicles

 * Acura 2012 Stark Industries Super Car: To be added
 * Quinjet: To be added
 * Commodore: To be added
 * Statesman: To be added

Facilities

 * Harvard University: To be added
 * Culver University: To be added
 * Pingo Doce Bottling Plant: To be added
 * Grayburn College: To be added
 * Avengers Tower: To be added
 * Clint Barton's Homestead: To be added
 * Sakaaran Arena: To be added
 * Grandmaster Palace: To be added
 * New Avengers Facility: To be added

Family

 * Father †

Allies

 * Betty Ross † - Former Colleague and Former Lover
 * Leonard Samson - Former Rival
 * Erik Selvig † - Former Colleague
 * Stanley Lieber - Friend
 * Rick Jones
 * Plant Manager - Former Employer
 * Martina - Former Colleague and Former Neighbor
 * Ricky - Pet
 * Samuel Sterns - Contact
 * Avengers - Teammates and Friends
 * Steve Rogers/Captain America - Leader
 * Tony Stark/Iron Man - Colleague
 * Natasha Romanoff/Black Widow - Love Interest
 * Thor - Temporary Enemy
 * Clint Barton/Hawkeye
 * Wanda Maximoff/Scarlet Witch † - Former Enthraller
 * Pietro Maximoff/Quicksilver † - Former Enemy
 * Vision † - Co-Creation
 * James Rhodes/War Machine
 * Sam Wilson/Falcon †
 * S.H.I.E.L.D.
 * Nick Fury †
 * Maria Hill †
 * Phil Coulson
 * Jasper Sitwell †
 * Pepper Potts - Friend
 * Helen Cho
 * J.A.R.V.I.S.
 * Laura Barton - Hostess
 * Cooper Barton
 * Lila Barton
 * Revengers - Former Teammates
 * Brunnhilde/Valkyrie - Friend
 * Loki † - Former Enemy
 * Sakaaran Rebellion
 * Korg
 * Miek
 * Biff
 * Tasba
 * Roscoe †
 * Hajo †
 * Asgardians
 * Heimdall † - Savior
 * Skurge/Executioner - Former Enemy
 * Masters of the Mystic Arts
 * Stephen Strange/Doctor Strange †
 * Wong
 * Golden Tribe
 * T'Challa/Black Panther †
 * Shuri †
 * Bucky Barnes/Winter Soldier †
 * Dora Milaje
 * Okoye
 * Ayo
 * Wakandan Royal Guard
 * Jabari Tribe
 * M'Baku
 * Border Tribe
 * Guardians of the Galaxy
 * Rocket Raccoon
 * Groot †
 * Carol Danvers/Captain Marvel

Enemies

 * United States Army
 * Thaddeus Ross
 * Joe Greller
 * Strategic Operations Command Center
 * Kathleen Sparr †
 * Espinoza † - Victim
 * Tough Guy Leader † - Victim
 * Emil Blonsky/Abomination - Attempted Killer and Attempted Victim
 * Chitauri
 * Leviathans
 * HYDRA
 * Wolfgang von Strucker †
 * List †
 * Ultron † - Co-Creation and Attempted Killer
 * Ultron Sentries †
 * Grandmaster - Former Situational Ally
 * Sakaaran Guards
 * Topaz † - Victim
 * Doug † - Victim
 * Hela †
 * Fenris † - Attempted Killer and Victim
 * Berserkers †
 * Surtur † - Attempted Victim and Attempted Killer
 * Thanos
 * Black Order
 * Ebony Maw †
 * Cull Obsidian † - Attempted Killer and Victim
 * Proxima Midnight †
 * Corvus Glaive †
 * Outriders

Trivia

 * Hulk is one of the three main protagonists to defeat the main antagonist of their debut film without any assistance, the others being Ant-Man and Spider-Man.
 * Hulk's Sakaar gladiator armor consists of a repurposed engine part for a hammer and sandals made from the tires of a Quinjet.
 * Banner appeared in the non-canon short film Team Thor, where he met Thor in a café and they discussed why the latter had not been invited to the Avengers Civil War.
 * Hulk has his own flavor of ice cream called A Hunk of Hulk of Burning Fudge, which is Doctor Strange and Wong's favorite.

Behind the Scenes

 * An alternate opening sequence scene was shot for The Incredible Hulk, though it was eventually cut from the final draft of the movie. In the scene, Banner travels to Greenland to commit suicide due to his incurable Hulk transformations. Banner shoots himself in the mouth, which only serves to trigger his transformation into Hulk, whose appearance destroys the glacier he was on. This scene is still considered canon because it is referenced in The Avengers by Banner.
 * Bruce Banner is one of the few characters who were played by different actors in different films. The others are James Rhodes, Howard Stark, Fandral, Thanos, and Red Skull.
 * In The Incredible Hulk, Banner is given a mailed package with the name "David B." on it. This is a reference to the TV series , where the character was renamed to David Bruce Banner.
 * Mark Ruffalo was uncredited for his appearances in Iron Man 3 and Captain Marvel.
 * To prepare for the role of Hulk in Avengers: Age of Ultron, Ruffalo worked with motion capture expert Andy Serkis.
 * There was an idea for Hulk to turn gray during the Hulkbuster battle in Avengers: Age of Ultron, as a reference to his original comic book incarnation, but it went unused.
 * Loki using Hulk to attack the Helicarrier is a reference to Loki using Hulk to destroy a train track to lure out Thor, and unwillingly creating the Avengers in the process in the main Marvel Comics Universe.
 * Mark Ruffalo was written into Captain America: Civil War at one point but was removed as Marvel felt Hulk's current whereabouts were too huge to be revealed in the packed film; he did, however, make a very short cameo on video.
 * J.B. Blanc, J.D. Hall, Fred Tatasciore and Jonathan Lipow all provided voiceover work for Hulk in The Incredible Hulk, though none of them were credited.
 * Hulk in the Marvel Cinematic Universe is the third live-action incarnation of the character, following incarnations portrayed by (Bruce Banner) and Lou Ferrigno (Hulk) and by.
 * Chad Camilleri, Jamie Jones and Cyril Raffaelli were stunt doubles for Edward Norton and Anthony Molinari, Troy Brenna, Josh Dyer, Clint Elvy and Ryan Tarran were stunt doubles for Mark Ruffalo in the role of Hulk.
 * Matt Purdy was a stand-in for Edward Norton in the role of Hulk.
 * On Hulk's advanced ability to talk in Thor: Ragnarok, Mark Ruffalo explained: "Hulk refuses to turn back into Banner, He's actually enjoying his time on Sakaar, because he's a gladiator champion. Which means he kicks lots of ass and he's enjoying his life for once. And he'll be damned if he goes back to Banner. He's a little perma-hulked, and because he's been Hulk for two years he has the vocab of a two-year-old."
 * Taika Waititi said that: "I was always fascinated with the duality of Hulk and Banner, and seeing how their brains could be interconnected. Could we sometimes see Hulk and have a bit of Banner's voice in there? Could we see Banner and have Hulk's personality through there? I think in this film we're going to see that for the first time, where the two are fighting -- really fighting this time -- for control over the body. And Hulk talking -- this idea of a more cognitive Hulk who can say sentences -- that obviously has existed in the comics, but it's something the fans want to finally see. It's exactly what fans want to see, and what I have wanted to see."
 * According to Mark Ruffalo, Thor: Ragnarok, Avengers: Infinity War and Avengers: Endgame make up a trilogy for Hulk.
 * When interviewed regarding why Hulk didn't come out and fight in Avengers: Infinity War, Joe Russo stated "I think people have interpreted it as Hulk's scared. I mean, certainly, that's not a -- I don't know that the Hulk is ever... he's had his ass kicked before, and he loves a good fight. But I think that it's really reflective of the journey from  Ragnarok . Is that these two characters are constantly in conflict with each other over control. And I think that if the Hulk were to say why, it'd be [that] Banner only wants Hulk for fighting. I think he's had enough of saving Banner's ass."
 * In a Q&A with Collider, Joe and Anthony Russo answered a question regarding the fight against Thanos. Joe said, "...I would say he is just that powerful. I mean...you didn't see him actively use the...Power Stone in the fight. I think ultimately the way we looked at that fight and the way we talked about it with our stunt team when we're executing was Hulk is obviously very powerful, but he's a little mindless in his fighting style. It's aggressive; it's pummeling. Thanos is the Genghis Khan of the universe. He's a very skilled fighter, equally as strong, so when you put those two up against each other, the more skilled fighter is going to win ultimately, which is why Hulk has a moment where he overpowers Thanos, but ultimately Thanos is smarter."