Brock Rumlow (BrothersWaughStudios)

Brock Rumlow is an ex-military man who became a mercenary.

Biography
To be added

Skills and abilities

 * Martial Arts: Crossbones is an exceptional martial artist, having received training in the military, and presumably from other sources. His victories include defeating and almost killing Spider-Man in combat.
 * Fencing: Crossbones is an excellent fencer, using an oversized, sword-length knife against Spider-Man.
 * Marksmanship: Crossbones is a crack shot with a gun. The only reason he didn't kill Spider-Man when he fired at Spidey, was because Spidey's average speed is enhanced, making it easier to dodge bullets.