Winter Soldier
James Michael Buchanan "Bucky" Barnes
Assassin
Espionage Agent
Shelbyville, Indiana
Excellent hand-to-hand combatant with special forces training.
Note: Due to brain damage Barnes has appeared to have lost all memory of his previous life and to ensure his loyalty and viability as an espionage agent he is kept in suspended animation until needed and mentally conditioned every time he his revived.
Civilian and military weaponry.
Captain America Vol. 5
Winter Soldier: Winter Kills
Moments before the drone exploded Bucky fell into the ocean were his near frozen body was retrieved by a Russian Submarine. Severely wounded, and his left arm severed, Bucky was kept frozen by the Russians to preserve his body in a hopes of extracting the secrets of the American Super-Solider Serum.
His body slowly reheated by an experimental Nazi process, Bucky was miraculously revived. To the Soviets' dismay the American solider had no trace of any chemical enhancements - but although he appeared to have permanently lost all memory of his former life he retained his combat and social memory.
During the ensuing Cold War, Bucky was converted into the perfect espionage agent and assassin capable of infiltrating the enemies of the Soviet Union as the Winter Soldier.