Bucky Barnes

James Buchanan "Bucky" Barnes is Steve Rogers' closest friend and a World War II veteran. He was a former officer in the 107th Infantry Regiment. Following the attack on Pearl Harbor, Barnes joined the Army and was given the 107th in 1943. After HYDRA captured his unit, Barnes was administered the Super Soldier Serum by Arnim Zola.

Barnes managed to survive the fall despite losing his left arm thanks to his improved abilities, which were unknown to his team. When the Soviet Armed Forces and HYDRA discovered him, they brainwashed Barnes and gave him a new cybernetic arm to use as their agent, the Winter Soldier. He would eliminate everyone who posed a threat to HYDRA over the course of the following fifty years.

Barnes was chosen to be the first participant in the Winter Soldier Program and placed in the custody of the brand-new HYDRA, a branch of S.H.I.E.L.D. His severed arm's remains were removed, and a prosthetic limb was used to replace it. HYDRA frequently administered electroconvulsive therapy to Barnes through a Memory Suppressing Machine in order to erase his memories of himself as Barnes and remold him to their liking, causing serious brain damage. Barnes' limbic system was severely damaged, causing him to lose access to his memories from before the experiments. He also developed hyperawareness of his surroundings and a high susceptibility to commands.

Prior to his brainwashing, Bucky Barnes was extremely devoted, loyal, headstrong, and patriotic with a strong moral center. He was a good and close friend to Steve Rogers during their youth; he helped him when he got into fights and tried to cheer him up and look after him when Rogers' mother died. Best friends since childhood, they went through many trials and tribulations together. He was also protective of Rogers, as demonstrated when Steve planned to enlist in the United States Army. Barnes tried to talk him out of it, as he knew he would die because of his physical condition and poor health.

Trained as a living weapon, Barnes became a new man so to speak, as his memories and identity were constantly being wiped until he was augmented into the perfect assassin, the Winter Soldier. As the Winter Soldier, he was brutal and ruthless with an utter lack of conscience, and remorselessly followed HYDRA's every order.

While he still holds a mostly serious and introverted demeanor, he retains a sense of humor.

He possesses superhuman strength, artificially enhanced physiology, enhanced strength, agility, stamina, and reflexes, as well as longevity and regenerative healing factor. Master Assassin, Master Martial Artist, Knife Mastery, Master Marksman, Master Acrobat, and Expert Tactician are just a few of his skills.

He has blue eyes and shoulder-length black hair, and his attire consists of a black tactical uniform, his recognizable arm cable, and a carbon composite faceplate with red-tinted lenses.