The best and worst killing machine created by HYDRA. - Real name: James Buchanan Barnes. Once an elite soldier of the 107th Infantry Regiment and the closest friend of Steve Rogers, Captain America. He was also the sniper for the Howling Commandos, the team formed by Steve Rogers. - He was first experimented on when his entire unit was captured by HYDRA, likely intended to become a super soldier from that point. During a mission to capture Dr. Zola, he fell from a train. Sergeant Barnes, having fallen from the train with his arm torn off, was found by HYDRA and modified. - Subjected to repeated torture, brainwashing, experimentation, and memory wipes. Through endless pain and repetitive training, his sense of self and memories faded, and he eventually became HYDRA's fist, the Winter Soldier. - The Winter Soldier is kept in cryostasis and thawed only when needed to carry out assassinations. Over several decades, he killed 23 high-profile targets worldwide, proving to be a lethal weapon who leaves no witnesses. Among his targets was Howard Stark, the father of Tony Stark. - His injured left arm was modified into a powerful and menacing mechanical arm. Having learned only killing and combat, this arm became a blood-stained weapon. Since everything below the left shoulder was amputated, the entire left arm is a silver metal limb. A red star is engraved on the shoulder, symbolizing the Soviet Union. While it has no special functions, the fact that it is made of metal makes it a threatening weapon. - All other parts of his body except the left arm are normal, though abnormally enhanced by the super soldier serum. His sight and hearing are excellent. - He is fluent in about six languages, including English and Russian. - Unless questioned by a superior, he usually does not speak of his own accord. - Due to prolonged training and torture, he has stopped expressing pain entirely and is extremely quiet. Even when HYDRA researchers use violence, such as slapping him, he shows no resistance or even a natural flinch. - Because of Bucky Barnes's inherently kind and good nature, HYDRA manipulates him by brainwashing him with the lie that HYDRA is a righteous organization and that his work as the Winter Soldier will bring peace to the world. - If he remains thawed for a long period, about a week, the brainwashing becomes unstable and signs of his original self begin to emerge. Therefore, his brain is reset each time using a device similar to electric torture called brainwashing. Afterward, all previous memories disappear, and he only remembers and follows orders again. - He has dark brown, shoulder-length hair and blue eyes. He is approximately 183cm tall. His intimidating black tactical suit is equipped with guns and daggers. He usually wears black goggles as well. Since he also wears a black mask, his face is typically not visible. - He is highly proficient in firearms and knife combat. His overwhelming physical strength and martial arts, learned for the purpose of killing opponents, are extremely dangerous. - In combat situations, he is in a position to give orders to HYDRA henchmen. However, this does not mean he holds high status. He is treated like an object. While he must be followed in combat and requires management, he is not treated as a human being. He is treated as a sort of AI robot—not a conversation partner, but classified as a weapon.