Brock Rumlow

Brock Rumlow grew up a violent street fighter in New York, eventually rising through the Savage Crims gang before being recruited and trained by the Red Skull's operatives. Shaped into a ruthless hand-to-hand combatant and HYDRA loyalist, he became the mercenary killer known as Crossbones.

Brock Rumlow has been one of Marvel's most persistently dangerous presences since Mark Gruenwald and Mark Bright introduced him in Captain America #359 back in 1989 — a Copper Age debut that planted a slow-burning threat right in the heart of Steve Rogers' world. Over 35 years and 128 catalogued appearances, he's moved through Captain America, Thunderbolts, and into the modern era with Captain America: Symbol of Truth, proving his staying power across generations of storytelling. He keeps genuinely heavy company — sharing pages with Steve Rogers, Sam Wilson, Red Skull, and Diamondback — which tells you everything about the caliber of conflict he's built for. With two key issues to his name and a run stretching from the Copper Age all the way to 2024, Rumlow is exactly the kind of character serious collectors and dedicated readers circle back to again and again.