U.S. Agent
(I) (1993)
U.S. Agent (II) (2001)
See also:
U.S.
Agent (John Walker) as member of the Mighty Avengers
U.S.
Agent (John Walker) as member of the New Invaders
U.S.
Agent (John Walker) as member of the Thunderbolts
U.S.
Agent (John Walker) as member of the West Coast Avengers