Bucky BarnesWinter Soldier

Bucky Barnes was brought back from his supposed death to be a brainwashed assassin called the Winter Soldier. Reformed by his friends, he now fights alongside the Avengers.

James Buchanan “Bucky” Barnes enlists to fight in World War II, but eventually literally falls in battle. Unfortunately, the evil Arnim Zola recovers him and erases his memory, turning him into a highly-trained assassin called the Winter Soldier.