Winter Soldier, also known as Bucky Barnes, is a fictional character in the Marvel Comics universe. He first appeared in Captain America #1 in 1941 as a sidekick to Captain America. However, in the Marvel Cinematic Universe, he is portrayed as a former assassin who was brainwashed and used by Hydra to carry out their missions. After being freed from their control, he struggles with PTSD and guilt for his past actions, and works to redeem himself as a hero. Played by actor Sebastian Stan, Winter Soldier is a complex and dynamic character who adds depth to the Marvel Cinematic Universe.
