Bill Foster

"In an isolated system particles co-exist in a stable phase relationship. If the system is interfered with, that stability becomes chaos. Unpredictable. Dangerous. Beautiful."

- Bill Foster

Doctor William Barrett "Bill" Foster is a biochemist and a former member of S.H.I.E.L.D. who had previously worked with Hank Pym on Project G.O.L.I.A.T.H. until disagreements between them caused Pym to dismantle the project. During one of the S.H.I.E.L.D. mission, Foster met Ava Starr, a young girl whose exposure with the Quantum Realm caused severe damage to her body. Once S.H.I.E.L.D. had collapsed, Foster helped Starr cure her condition, using all research that Pym was doing to bring Janet van Dyne back from the Quantum Realm, while both Ant-Man and the Wasp stood in their way. Although he disagreed with her methods, Foster continued helping Starr until van Dyne was saved and cured her, as Foster agreed to protect Starr as they went on the run.

Project G.O.L.I.A.T.H
"I was partners with Hank on a project called G.O.L.I.A.T.H.."

- Bill Foster

Working for S.H.I.E.L.D., Foster worked with Hank Pym on Project G.O.L.I.A.T.H.. During the project, Foster was able to grow to at least 21 ft. However, Foster and Pym had a fight and Foster left the project before Pym decided to leave S.H.I.E.L.D.

Meeting Ava Starr
"Hello, Ava. My name is Bill. I was a friend of your father. I brought you something. It's all right. Try again. That's it."

- Bill Foster to Ava Starr

Years later, S.H.I.E.L.D. assigned Foster to investigate quantum anomaly in Argentina. After the investigation, Foster learned that anomaly was caused by Ava Starr, daughter of his former colleague and friend, Elihas Starr. Starr's work with Quantum Tunnel led to their eventual death of his wife Catherine, as well as himself, while their daughter was inundated by quantum energy.

Foster took her from the orphanage becoming her surrogate father and vowed to find a cure for her condition. Despite his protection, he wasn't able to prevent S.H.I.E.L.D. from running tests on her and turning her into a killing machine.

A Cure for Ava Starr
"When S.H.I.E.L.D. collapsed, I took Ava in. I built the chamber to slow her decay, but her condition was progressive. I didn't know how to cure her. She wanted to kill you, Hank. But I told her, no. And that she should watch you instead. And sure enough, she discovered that you were building a Tunnel."

- Bill Foster to Hank Pym

In the wake of HYDRA Uprising and collapse of S.H.I.E.L.D., Foster took Ava Starr away but her condition continued to mature, but so did her molecular instability. Eventually, her condition reached a point where any kind of instability was incredibly painful and even her suit became less effective at helping her control it. Foster designed the Quantum Energy Chamber where Starr could be bombarded by quantum energy to help stabilize herself, but it only offered a very short-term solution. They realized that in order to cure Starr for the long-term, she would need heavy amounts of quantum energy, and Foster realized there might be one place they could get it: the Quantum Realm.

Despite Starr's intention to kill Hank Pym, Foster prevented it and told her only watched him. Eventually, she found out that Pym had reopened work on the Quantum Tunnel in order to bring back his wife Janet. Foster began plotting with Starr to steal the shrunken-down lab so that they could drain her quantum energy and heal Starr, at least for a long period of time.

Reunion with Former Friend
"I told you this was a waste of time. Come on, let's go." "Don't condescend, Hank. You're the one who's on the run from the FBI. All because you had to grow to a size that finally fit your ego." "That wasn't me in Germany. It was this idiot."

- Hank Pym and Bill Foster

While Foster as lecturing for his students at Berkeley University, he spotted Hank Pym, Hope van Dyne, and Scott Lang in auditorium and finished his lecture sooner, letting students go. They told Foster about their plan, as well as link between minds of Lang and Janet van Dyne, much to Foster's curiosity. Van Dyne asked Foster to help in search for Mobile Laboratory kidnapped by Ghost, however, Foster said that he did not had the equipment they were describing to him. Pym expressed his annoyance, noting that their visit to Foster was a waste of time while Foster asked he not to condescend. Foster then noted that Pym was on the run from the FBI becauce he had to grow to a size of his ego, pointing to the incident in Germany. However, Pym stated that he was not in Germant and it was Lang what surprised Foster. He talked back with Lang about his job with Pym at the Project G.O.L.I.A.T.H. back in the S.H.I.E.L.D., commenting that he was forced to tolerate grouching of his partner. They then discussed their records for growth, with Foster being a proud 21 ft and Lang trumping him with a colossal 65 ft.

Van Dyne interrupted them, hinting that they need to focus on search of the lab. Foster mockingly expressed his surprise that Pym still had not already figured how to do it and then noted that Pym's arrogance was the reason why he left the project. Pym reminded that he fired Foster, but he still kept remonstrating Pym due to his temperament, stubborn and impatientence what pushed everyone away from him, except of Janet who in the end paid her price.

Pym then could not take Foster's attacks and was going to assault him only to be stopped by Lang and van Dyne. Lang then spotted FBI agents led by Jimmy Woo outside of the campus, saying that they must leave right now. Ultimately, Foster advised that they use a regulator from an Ant-Man Suit to track the lab. Van Dyne admitted that Foster's idea can be helpful and thanked him before they left his office. However, Foster actually intended to lure them to Ghost's Hideout where he can extract information about the Quantum Realm from Lang.

Woo visited Foster in his office and informed him that campus police identified his previous visitors as Pym and van Dyne, however, Foster denied his suggestions. Foster told Woo that he did not met Pym for thirty years and he definetely wa]s the last person he would want to visit. Stoltz did not believed him and tried to push on Foster before he was stopped by Woo. He wanted to know the reason of malice between Foster and Pym what he calmly replied that they hated each other.

Ambush at Ghost's Hideout
Foster's plan succeed and Ant-Man, Wasp and Hank Pym were captured by Ghost inside her hideout. Foster then revealed himself as Starr's ally in front of them while Starr explained her intentions, telling about her father who was discredited and fired by Pym. Elihas' work on the Quantum Tunnel caused an explosion what killed Starr's parents and distorted her molecular structure.

Foster then explained that he took Starr away after the collapse of S.H.I.E.L.D., and searched for method to stabilize her condition. However, Foster's monologue was interrupted by Lang's phone. Foster said that Lang was called up by his daughter Cassie but refused to allow Lang to answer her. Lang then convinced him that it probably something important (what actually was not). Foster then told Pym that the only way to help Starr is extracting Janet van Dyne's quantum energy what can stabilize Starr's molecular structure. However, Pym furiously protested, saying that it will kill Janet, much to Foster's scepticism.

Foster stated that Lang will inform him about Janet's message about her location, otherwise he will turn Lang to the FBI. He then used Pym Particles Disks to reduce Quantum Energy Chamber and prepared to go, leaving Pym and van Dyne in the hideout. However, Pym was seemingly suffered by a heart attack and van Dyne and Lang him to gave Pym his medecine. After the hestitaion, he decided to help his former friend and took a box with Pym's pills. Starr realized that it was a lie but to late, Foster released increased ants that kept Foster and Starr away. Pym usde EMP Communication Device to keep Foster away while van Dyne and Lang knocked Starr and escaped with the Mobile Laboratory and Quantum Stabilizer.

Keeping Plan in Motion
Without ants in the Ghost's Hideout, Foster examined the condition of the Quantum Energy Chamber, figuring out that they need the Mobile Laboratory. He explained to Starr that chamber, as well as suit, can not helped her longer and she had a few weeks to live. Starr was going to force them to bring the lab back and intended to kidnap Cassie Lang as a ransom. Foster stopped her, noting that he tolerated a lot of Starr's issues but he can not be a part of kidnapping of child. Starr furiously reminded him that she is fading away and Foster promised to fix it. However, he said that if Starr hurt Scott Lang's daughter, he would not help her. Starr had no another option but agree to Foster's condition.

Later, Starr managed to steal the laboratory, while Hank Pym and Hope van Dyne were arrested by the FBI. Foster set up the equipment, connecting the Quantum Tunnel with the chamber and stated that tech is ready to extracting energy. However, Foster also explained procedure could be very dangerous and they probably should wait. Starr reminded him that she have no time to wait and they need to do it right now.

Foster then attempted to launch the Tunnel however it immediatly shut down. Foster saw several ants sabotaging the equipment and figured out that Pym is close. Starr then went to deal with them, leaving Foster in the lab where he was ambushed by giant ants. Keeping Foster away, Pym took his suit and was going to the Quantum Vehicle. Foster then said that he just wanted to help Starr and Pym assured that he will help him to stabilize her condition once he saves Janet van Dyne, saying that together they can figure something out. Foster said good luck to Pym before ants escorted him out of the lab before it was reduced Lang and van Dyne.

Later, Foster saw the decreased lab and realized what Starr was intending to do. Foster attempted to stop her from extracting the energy, explaining that Pym could be right that it will kill Janet. However, Starr did not cared about her and pushed him away before turning on the chamber. Process was launched and Janet became to lose her structure but Starr was stopped by Lang and van Dyne. Janet then cured Starr's condition, much to Foster's joy. Luis then informed them that San Francisco Police Department is coming there and Lang proposed to get away. Together with Ava Starr, Foster managed to hide from the police and then Starr asked him to leave her behind. However, Foster refused to leaving her and they hugged before Foster continued to help her.

Personality
Foster is an exceptional and intelligent scientist on par with Hank Pym enough for the latter to consider him his rival. He, however, resented Pym for his ego and attempt to fire him. From this point on, he develops a fierce hatred for Pym, deriding his egotistical nature and arrogance. Beyond this resentment for Pym, however, he's rather kind and affectionate, getting along quite well with Scott Lang upon meeting him and commenting on his size-increasing trials in the old days.

It is later revealed that he deeply cares for Ava Starr, doing whatever he could to heal her of her condition. This love is so deep that he treats Starr like his own daughter, tolerating several of her more ruthless actions, and refused to leave her side, even when his life was at risk. Despite his love for her, his tolerance for her actions has a limit; this is particularly seen when Starr suggests kidnapping Lang's daughter. He vehemently rejected the idea, going so far as to say if she laid one finger on her, he would no longer help her. Additionally, he showed last-minute hesitation at absorbing quantum energy from Janet van Dyne, worrying that Pym may have been correct about van Dyne being ripped apart by the process, and urged Ghost to find another way.

Powers
"How big did you get?" "My record? Twenty-one feet."

- Scott Lang and Bill Foster


 * Size Manipulation: Using technology developed by Hank Pym, Foster was able to grow his body to giant size, up to 21 feet.

Abilities
"You might be able to improvise that tracker. If you modify the defraction units on one of your regulators."

- Bill Foster to Hank Pym


 * Master Scientist: Foster is an accomplished S.H.I.E.L.D. scientist, working with Pym, and Janet Van Dyne. He had a solid background on quantum technology and worked with Pym on Project G.O.L.I.A.T.H. He was also able to build an advanced machine to momentarily halt Ava Starr's molecular instability.

Equipment

 * Quantum Energy Chamber: In order to stabilize Ava Starr's molecular condition, Foster designed the chamber that bombarded her by quantum energy, stabilize Starr. However, it was only a very short-term solution and later it lost effect. Foster then re-designed the chamber to extract quantum energy from Janet van Dyne.
 * Pym Particles Disks: Foster used one of the disk with Pym Particles to reduce the Chamber and carry it out of hideout.

Facilities

 * Berkeley University: Upon the collapse of S.H.I.E.L.D., Foster was employed by the Berkeley University as a biochemistry proffessor. He then met in his office with Hank Pym after the thirty years, as well as with Hope van Dyne and Scott Lang. Later, his office was visited by the FBI where Jimmy Woo questioned him about Pym and van Dyne.
 * Ghost's Hideout: To be added
 * Mobile Laboratory: To be added

Family

 * Ava Starr/Ghost - Adoptive Daughter and Temporary Enemy

Allies

 * S.H.I.E.L.D. (First Incarnation)
 * Elihas Starr † - Former Colleague
 * Hank Pym † - Former Colleague and Former Situational Enemy
 * Janet van Dyne † - Former Colleague
 * Scott Lang/Ant-Man - Situational Enemy turned Ally
 * Hope van Dyne/Wasp † - Situational Enemy turned Ally
 * FBI
 * Jimmy Woo
 * Burleigh
 * Pearson
 * X-Con Security Consultants
 * Luis
 * Dave
 * Kurt

Enemies

 * Stoltz †

Trivia

 * In the comics, Bill Foster was the second individual to hold the mantle of Giant-Man, and the fourth Goliath, or Black Goliath. He was also the former husband of Claire Temple, which he divorced in order to focus on his career of superhero, and a supervisor of Project P.E.G.A.S.U.S.. He lost his life at the hand of Ragnarok, a cyborg clone of Thor, during the Civil War.

Behind the Scenes

 * Kiante Elam was a stunt double for Laurence Fishburne in the role of Bill Foster.
 * James Prince was a photo double for Laurence Fishburne in the role of Bill Foster.