Frank Grillo is in the running for the role of Crossbones in Marvel Studios upcoming Phase II sequel Captain America: The Winter Soldier. He recently visited Marvel Studios in Los Angeles, and confirmed that he was testing for this role via his twitter account.
Although the character's appearance in the film has not been confirmed, Crossbones, also known as Brock Rumlow, usually appears as a henchman of the Red Skull in the Marvel Comics universe. He is a highly trained mercenary, who carried out the assassination of Captain America. He was created by writer Mark Gruenwald and artist Kieron Dwyer in 1989.
Production is scheduled to begin early next year in Cleveland.