Crossbones (character)
Crossbones (Brock Rumlow) is a supervillain appearing in American comic books published by Marvel Comics. Created by Mark Gruenwald and Kieron Dwyer, the character first made a cameo appearance in Captain America #359 (October 1989), before he was fully introduced later that month in issue #360 and his name was revealed in issue #362 (November 1989).