Crossbones

"I just want them to feel the pain, the loss, of everything they took from me. And make them pay for it. In blood."

- Brock Rumlow

Brock Rumlow was a HYDRA sleeper agent inside S.H.I.E.L.D., and a STRIKE team commander. He is a world-class hand-to-hand combatant, with extensive experience in various street fighting, martial arts, and military combat techniques. During the HYDRA Uprising, Rumlow was ordered to lead the HYDRA team and assassinate Captain America, until Rumlow was nearly killed during the Battle at the Triskelion, gaining horrific facial scars.

Once he recovered, and hearing that Alexander Pierce had died, Rumlow escaped from the hospital and, assuming the codename Crossbones set on a path to extract revenge and make anyone involved in his downfall suffer the same pain and loss he endured. He lured the Avengers into a public fight in which he personally fought Captain America. Although he was defeated, Crossbones activated a bomb hidden within his suit and, despite Scarlet Witch's best efforts to contain the blast, killed himself and dozens of innocent people in the resulting explosion.

Agent of S.H.I.E.L.D.
Brock Rumlow was an agent of S.H.I.E.L.D. who, over time, was tasked with leading a STRIKE team. As the leader of a STRIKE team, he often partnered with Captain America and Black Widow, after they joined S.H.I.E.L.D. During his career, he became a double agent for HYDRA, a terrorist organization with a goal to create a fascist New World Order.

Zodiac
"These people, whoever they are, stole the Zodiac from S.H.I.E.L.D., after S.H.I.E.L.D. swore they didn't have it." "And now they don't, and we're getting it back."

- Captain America and Brock Rumlow

One operation saw Rumlow assisting in the recovery of the stolen Zodiac weapon and the apprehension of the terrorists that stole it. During one of their missions together, Rumlow, partnered with Rogers and Romanoff, was able to stop a terrorist group led by a man only known as Baker from launching an attack with the stolen Zodiac weapon in Chicago.

Rogers and Rumlow defeated most of the terrorists while Romanoff took care of Baker himself. She was not able to defeat him; however, after his men had fallen, he could not defeat three of them, so Baker tried to flee by throwing himself from a window. As Captain America was unwilling to let Baker escape with the Zodiac, he too jumped off the Skydeck and struggled with Baker in mid-air. Unwilling to die in the fall, Baker released the Zodiac to Rogers and activated his parachute, while Rumlow snared Captain America in mid-air back on the Skydeck with a grappler arrow.

Retaking the Lemurian Star
"How many pirates?" "Twenty-five, top mercs, led by this guy. Georges Batroc."

- Captain America and Brock Rumlow

Agent Brock Rumlow led his STRIKE team, led by Captain America and Black Widow on a mission to recapture theLemurian Star, a S.H.I.E.L.D. ship which had been hijacked by Georges Batroc and his pirates. Once Rumlow had debriefed the team on the details of the plan, Rogers left the Quinjet first, when Jack Rollins questioned if he had jumped out without a parachute, Rumlow confirmed that he had. Rumlow and STRIKE team joined Rogers moments later, with Rumlow shooting a pirate who had Rogers at gunpoint. Rumlow and Rollins made their way through the ship, taking a key position outside the kitchen where the hostages were being held. Once Rogers and Natasha Romanoff were in position, they killed Batroc's subordinates and rescued the hostages, including Jasper Sitwell. While Rumlow made his way off the ship, Rogers battled Georges Batroc who eventually escaped.

The Death of Nick Fury
"I'm sorry about what happened with Fury... Messed up what happened to him." "Thank you."

- Brock Rumlow and Steve Rogers

Rumlow accompanied STRIKE to the hospital when Director Nick Fury was shot and killed by a mysterious assassin. When he received a call from the Triskelion, Rumlow informed Steve Rogers that he needed to return to S.H.I.E.L.D. to debrief with Alexander Pierce. Rogers initially delayed as he was speaking to Natasha Romanoff, but Rumlow insisted that they had to leave immediately. Rumlow and the STRIKE team accompanied him back to the Triskelion.

Chase of Captain America
"Whoa big guy, I just want you to know, this isn't personal!" "It kinda feels personal."

- Brock Rumlow and Captain America

Rogers' meeting with Alexander Pierce resulted in Rogers being declared an enemy of S.H.I.E.L.D. by Pierce due to having key information about the death of Fury which could endanger HYDRA's secrets. Rumlow and the STRIKE team attempted to capture Steve Rogers inside an elevator, Rumlow spoke to Rogers to gain his trust, noting that he had been sorry to hear about the death of Nick Fury. However, Rogers soon became suspicious and gave the team a chance to escape; they refused and attempted to capture Rogers using Magnetic Handcuffs. After a brief fight, Rumlow and Rogers were the last men standing. Rumlow told Rogers the fight was not personal and attacked Rogers with his Taser Rods. Although he was able to momentarily gain the upper hand, Rumlow was quickly defeated when Captain America knocked him out by picking him on and throwing him against the roof of the elevator before escaping the building. Rumlow led the ensuing manhunt against Rogers under the orders of Alexander Pierce and Jasper Sitwell. HYDRA was able to track him to a mall in Washington, D.C. when he and Natasha Romanoff activated a flash drive with a tracker on it. Rumlow arrived at the mall with his STRIKE team including Jack Rollins, all eager to gain revenge of their defeat in the elevator, but despite a long search, they failed to spot the fugitives.

Calling the Winter Soldier
"Three holes, start digging."

- Brock Rumlow

Later, Steve Rogers and Natasha Romanoff were located at Camp Lehigh, where Arnim Zola's computer hard-drive was located. Alexander Pierce destroyed the camp with a missile in an attempt to kill them. Rumlow explored the area, looking through the rubble for their corpses and discovered a pair of shoeprints, telling him that Rogers and Romanoff had survived and escaped. Rumlow reported back to base and told them to call in the Winter Soldier. Rumlow and his STRIKE team captured Captain America, together with Black Widow and Falcon on the streets of Washington, D.C. after they had a prolonged fight with the Winter Soldier. As Rumlow and his team surronded the three with their guns drawn, he noticed Jack Rollins attempting to execute Rogers by shooting him in the back of his head, Rumlow saw a news helicopter watching overhead and ordered him to stop and wait until they were clear of the media. Rumlow then took their captives to a secure location to execute them free of any media interference. As they stepped from the van, Rumlow turned to some of his team and ordered them to dig three graves for Rogers, Romanoff and Wilson. He and Jack Rollins led a team to the van and opened the doors with their guns drawn, only to find that Rogers and his team had escaped with help from Maria Hill and a Mouse Hole device to cut through the vehicle. Rumlow and Jack Rollins escorted Alexander Pierce to the Ideal Federal Savings Bank to begin questioning the Winter Soldier, who was struggling to understand why he seemed to remember Captain America from a past life. Rumlow acted as Pierce's bodyguard as he began questioning the Winter Soldier. Rumlow watched closely as the Winter Soldier was beaten and Pierce ordered his memories to be wiped once again so he could attack Rogers.

Battle at the Triskelion
"This is gonna hurt. There are no prisoners with HYDRA, just order, and order only comes through pain. Are you ready for yours?" "Man, shut the hell up!"

- Brock Rumlow and Sam Wilson

Rumlow made his way into the control center of the Triskelion to ensure the launch of the Helicarriers while Captain America revealed HYDRA's infiltration within S.H.I.E.L.D.. When Cameron Klein refused to help, Rumlow threatened to shoot him in the head. Sharon Carter defended Klein by putting a gun to Rumlow's head. A gunfight between S.H.I.E.L.D. and HYDRA agents ensued, but Rumlow was able to get the Helicarriers in the air and escape. On his way through the Triskelion, Rumlow managed to kill several S.H.I.E.L.D. agents, using his knife and disarming various agents to take their weapons and shoot others. He received a call informing him that Black Widow and Nick Fury had attacked and captured Alexander Pierce, knowing that the capture of Pierce put Project Insight at risk of being stopped, Rumlow made it his priority to get to Pierce and protect him so HYDRA's plan could go underway. As he went to protect Pierce, Rumlow was cornered and ambushed by Sam Wilson, however he was soon able to knock Wilson to the ground with a head-butt. Rumlow prepared for a long fight and told Wilson that their fight was going to hurt as HYDRA did not take prisoners, bragging that Wilson was out of his depth in challenging him. Wilson simply told him to shut up as they began to fight, charging at each other and exchanging blows. As Rumlow gained the upper hand, he threw his opponent across the room while taunting him that he was out of his depth fighting HYDRA, but while doing this he did not spot the incoming Helicarrier until it was too late and it crashed into the side of the building. Rumlow attempted to flee but was soon knocked over and crushed by the crumbling building. Rumlow managed to survive despite being burned and crushed under Helicarrier rubble, gaining horrific facial and body scars, and was taken away by medics.

"Crossbones"
"I didn't do this for HYDRA. You want in on this next job, you better leave all that shit at the door."

- Crossbones

Months later, Rumlow watched a report on the fall of S.H.I.E.L.D. from his hospital bed. Disillusioned and furious at HYDRA's defeat, he assaulted his nurse and escaped. Recovering some items from S.H.I.E.L.D.'s research and development labs, he set up an arms sale to draw out HYDRA, on whom he opened fire to send the message he no longer worked for them, while getting some satisfaction by subjecting them to the pain he suffered. He took up the name Crossbones and was soon spotted in Lagos, Nigeria, drawing the attention of Captain America and Falcon.

Battle of Nigeria
"You know something? He remembered you. Your friend, your pal, your Bucky."

- Crossbones to Captain America

In 2016, Rumlow and some mercenaries participated in the theft of a biological agent at an Institute for Infectious Diseases laboratory in Lagos, Nigeria. However, the Avengers, which consisted of Captain America, Wanda Maximoff, Falcon and Black Widow interfered and fended off Rumlow's mercenaries. Rumlow fought Captain America up until the opposition had the upper hand.

Death
Captain America demanded Rumlow to reveal who he was working for, Rumlow claimed that it was the Winter Soldier who was pulling his strings before arming a bomb applied in his suicide vest, intending to take Captain America with him. Maximoff used her powers to whisk him away from Rogers but unintentionally placed him next to a building with Wakandan nationals. Rumlow is among those who perished in the resulting explosion.

Personality
"Thanks." "Yeah, you seemed pretty helpless without me."

- Captain America and Brock Rumlow

Rumlow was extremely loyal to HYDRA, as well as being slightly cocky, as when he saved Captain America aboard the Lemurian Star. He had a strong attitude, as well as a tendency to go to extreme lengths to do things, as when he threatened to kill Cameron Klein if he did not launch the Insight Helicarriers.

Abilities

 * Master Martial Artist: Rumlow is a formidable hand to hand combatant. He was able to evade the knifes thrown by one of the men in Baker's terrorist cell and easily defeat him, and to hold his own against Steve Rogers for the longest when the whole STRIKE team tried to capture him in one of the elevators in the Triskelion. He also dominated Sam Wilson in their fight and mocked him for being in a superior fighting level, as Wilson only hit Rumlow when he ambushed him.
 * Expert Marksman: Rumlow is a very accurate marksman skilled in sharpshooting, being able to, among other things, shoot a rope with a crossbow to catch Captain America to prevent him from falling from a building, or accurately land a single shot to a target's head while parachuting.
 * Spy: Rumlow managed to hide his true identity as a HYDRA sleeper agent from S.H.I.E.L.D., forming a partnership with Captain America and Black Widow in the process.

Weapons

 * Taser Rod: While attempting to capture Captain America, Rumlow and his STRIKE team used Taser Rods to weaken the super soldier and arrest him. However they quickly learned that the Rods were not strong enough to stop Captain Rogers and he escaped.
 * : Rumlow's personal handgun. He carried it while looking for Steve Rogers and Natasha Romanoff in a mall in Washington, D.C. He also used it to threaten Cameron Klein inside the Triskelion, but he was forced to drop the weapon.
 * : A regular handgun that Rumlow had to use after losing his personal gun, while navigating inside the Triskelion to ensure HYDRA's plans.
 * : The Glock 19 pistol is the standard sidearm carried by STRIKE, and, as such, Rumlow carried it as his main sidearm. He used it to threaten Steve Rogers, Sam Wilson and Natasha Romanoff in Washington, D.C., right before managing to capture them following a confrontation against the Winter Soldier.
 * : Sharon Carter's weapon of choice. Rumlow disarmed her and took the gun for himself to escape from loyal S.H.I.E.L.D. agents inside the Helicarrier Control Room at the Triskelion.
 * : The standard weapon used by S.H.I.E.L.D. Strike Team members, that Rumlow used while trying to capture Steve Rogers and Natasha Romanoff in Camp Lehigh.
 * : A bullpup assault rifle that Rumlow carried on a mission to retake the Lemurian Star and liberate hostages inside. He used it even before landing on the ship, killing a pirate that was about to attack Captain America, and navigated with it inside the ship.

Others

 * Battlefield Suit: After being scarred, Rumlow equips himself with a special advanced battlefield suit that has exoskeleton mechanic fists gloves, and he wears a metallic mask helmet in order to hide his facial scars.

Allies

 * HYDRA
 * Alexander Pierce † - Leader
 * Jasper Sitwell † - Former Ally
 * STRIKE
 * Jack Rollins - Subordinate

Enemies

 * S.H.I.E.L.D. (First Incarnation)
 * Nick Fury - Former Director
 * Maria Hill - Former Deputy Director
 * Sharon Carter - Former Colleague
 * Steve Rogers/Captain America - Former Colleague turned Enemy
 * Natasha Romanoff/Black Widow - Former Colleague turned Enemy
 * Cameron Klein - Former Colleague turned Hostage
 * Baker
 * Georges Batroc
 * Sam Wilson/Falcon
 * Winter Soldier - Ally turned Enemy
 * Iron Man
 * Scarlet Witch

Trivia

 * In the comics, Brock Rumlow is an agent of the Red Skull known as Crossbones, and became romantically involved with his daughter Sin. It has been confirmed that he will bear the moniker of Crossbones in Captain America: Civil War.
 * In Captain America: The Winter Soldier, Brock Rumlow wears equipment under his Bulletproof Vest that is meant as a reference to his attire in the comics.
 * In spite of the character's apparent suicide bombing in Civil War, Frank Grillo indicated that we haven't seen the last of the character; addressing his short filming schedule prior to the film's release.