Now you have to live the rest of your life knowing you're going to die someday and disappear forever.
Sergeant James Buchanan "Bucky" Barnes is a former soldier of the 107th Infantry Regiment and the childhood best friend of Steve Rogers. As the threat of World War II was still escalating, Barnes enlisted in the army to do what he could, only to soon be captured by the forces of HYDRA, however Barnes was eventually rescued by Rogers, who had just become Captain America during Barnes' absence. Joining forces in the continuing war, Barnes and Rogers formed the Howling Commandos to battle the Red Skull's forces. During an attempt to capture HYDRA scientist Arnim Zola, Barnes was caught in an ambush and plummeted from the HYDRA train, where he vanished and was then presumed to be deceased.
Unbeknownst to his team, Barnes had actually survived the attack on the train, albeit with the loss of his left arm. Brainwashed and armed with a new cybernetic limb, Barnes ultimately became an enhanced HYDRA operative known as the Winter Soldier. Over the next several decades, he would eliminate anyone who posed a threat to HYDRA, including his former ally, Howard Stark as well as his wife Maria. Between his missions, Barnes would be put into a cryogenic stasis to preserve his longevity. Over half a century later, when he was ordered by HYDRA's new leader Alexander Pierce to assassinate S.H.I.E.L.D. Director Nick Fury, the Winter Soldier was unexpectedly confronted by his old friend, Steve Rogers, triggering him to begin remembering his prior life before HYDRA.
In the wake of the Battle at the Triskelion, the Winter Soldier went on the run from HYDRA onto a mission to remember his past and end his long violent history. However, Barnes was then accused of causing a terrorist bombing, which claimed the life of T'Chaka, the King of Wakanda, among others. As Black Panther sought revenge for his father's death, Barnes was soon saved by Captain America, sparking the Avengers Civil War as Tony Stark was sent to capture him. As it was revealed that Helmut Zemo had organized the Civil War, he revealed that Barnes had murdered Stark's parents years ago. Having survived the latter's revenge, Barnes was then taken into Wakanda where he was allowed by T'Challa to be frozen until his mind could be cured of all HYDRA's mental programming.
He can be seen taking out a scorpion.