Brock Rumlow, known as Crossbones, is a ruthless mercenary and primary assassin for the Red Skull, infamous for sniping Captain America. He appears in Marvel Comics from 1989, including training in the Savage Land, leading terrorist operations, and serving on the Thunderbolts.
Crossbones debuts as a mercenary working for the Red Skull, tasked with retrieving a cosmic cube shard. He quickly becomes a recurring adversary for Captain America. #comics #marvel )
Crossbones engages Captain America in combat for the first time in Captain America #360-362, showcasing his enhanced strength and ruthless tactics. #comics #marvel )
In Captain America #372-378, Crossbones' backstory is revealed: he was trained as a mercenary in the Savage Land, where he gained his combat skills and ruthless mindset. #comics #marvel )
Crossbones participates in the Acts of Vengeance storyline, where he allies with other villains to attack superheroes. He specifically targets the Avengers. #comics #marvel
Crossbones is hired by the Red Skull to retrieve the Bloodstone, leading to a clash with Captain America and Diamondback in the Bloodstone Hunt storyline. #comics #marvel
During the 'The Captain' storyline, Crossbones works with the Red Skull to undermine Captain America, using psychological warfare and direct assaults. #comics #marvel )
Crossbones aids the Red Skull in Operation: Rebirth, a plot to create a new super-soldier, fighting Captain America and Sharon Carter. #comics #marvel )
In Streets of Poison, Crossbones becomes a drug lord using a new narcotic, leading to a brutal confrontation with Captain America in the streets of New York. #comics #marvel
Crossbones is hired to assassinate Captain America during the Fighting Chance storyline, but fails due to interference from other heroes. #comics #marvel )
In The Challenge arc, Crossbones competes in a villainous contest orchestrated by the Red Skull to prove his worth as a lieutenant. #comics #marvel )
Crossbones is transformed into a werewolf-like creature during the Man and Wolf storyline, gaining enhanced strength but losing control. #comics #marvel
Crossbones appears in the Winter Soldier arc of Captain America, working with the Red Skull to manipulate events involving Bucky Barnes. #comics #marvel )
Crossbones assassinates Captain America by shooting him with a sniper rifle outside a courthouse, triggering the Death of Captain America storyline. #comics #marvel
Crossbones is captured and put on trial for murder, but he escapes custody during the fallout of Captain America's death. #comics #marvel
Crossbones is recruited into the Thunderbolts as part of a government initiative to control supervillains, leading to a stint as a team member. #comics #marvel )
During Dark Reign, Crossbones serves under Norman Osborn's Thunderbolts, taking part in missions to eliminate threats to Osborn's regime. #comics #marvel )
Crossbones participates in the Siege of Asgard as part of the Thunderbolts, fighting against the heroes and Asgardian forces. #comics #marvel )
After Dark Reign, Crossbones is imprisoned but quickly escapes, continuing his criminal activities. #comics #marvel )
Crossbones remains with the Thunderbolts during Fear Itself, battling the forces of the Serpent. #comics #marvel )
Crossbones targets Sam Wilson, the new Captain America, in a series of confrontations in Captain America vol. 7. #comics #marvel )
Crossbones is hired by a mysterious client to steal a weapon, leading to a clash with the Secret Avengers. #comics #marvel
Crossbones attacks a S.H.I.E.L.D. facility during the Original Sin storyline, seeking information on the Watcher's secrets. #comics #marvel )
Crossbones is imprisoned in Pleasant Hill, a S.H.I.E.L.D. prison camp, and leads a riot during the Standoff! event. #comics #marvel
Crossbones allies with the Hydra version of Captain America, helping to implement Hydra's takeover of the United States. #comics #marvel )
Crossbones is killed by Baron Zemo during the Secret Empire finale, though his death is later ruled non-canon due to timeline manipulation. #comics #marvel )
Crossbones is resurrected by the symbiote god Knull, becoming a mindless thrall in the King in Black event. #comics #marvel
Crossbones joins a new incarnation of the Thunderbolts led by Luke Cage, operating as a reluctant antihero. #comics #marvel )
Crossbones is hired to kill Bucky Barnes as the new Captain America, but fails due to intervention by Sam Wilson. #comics #marvel )
Crossbones establishes a training camp in the Savage Land to recruit and train new mercenaries, targeting global conflicts. #comics #marvel )
Crossbones rejoins the Red Skull's Inner Circle, aiding in a plot to resurrect Nazi ideology using cosmic power. #comics #marvel
Crossbones battles his daughter Sin, who has taken control of the Red Skull's organization, leading to a violent family feud. #comics #marvel )