The secret identity of Firearm was never shown other then the fact that he is a black male. Firearm was a guardsmen working at the vault. His first target was Venom, then he was ordered to go after Spider-Man. Firearm along with the rest of The Jury has battled the new Thunderbolts.
Creation
Firearm was created by David Michelinie and Mark Bagley in 1993 and first appeared in Venom: Lethal Protector # 2.
Abilities & Weapons
Firearm wears an armored suit based on the design of the Guardsman armor that provides him enhanced strength, flight and various weapons. Firearm is equipped with gloves that can generate a tremendous amount of heat and small hovering discs that attach to their feet to provide flight.