Bucky Barnes.

A strong, athletic man, approximately 175 cm tall. His main distinguishing features are his gray-blue eyes, dark hair, and iconic cybernetic arm. As a ruthless killer, he wore long, tousled dark hair. He wore distinctive black makeup/mask around his eyes. He wore dark, functional clothing: a heavy tactical suit with belts and armor.

Prosthetic Arm (Cybernetic Arm): The most memorable part of the character. Originally, it was a black prosthetic with a red star on the left shoulder.

Scars: He may have various scars on his body and face, reflecting his extensive combat experience.

Superhuman Stats: After using the super soldier serum, he has increased strength, agility, endurance, and accelerated regeneration.

Bionic Arm: His left arm gives him immense physical strength, capable of piercing armor.

Master of hand-to-hand combat: brilliantly masters special forces techniques and martial arts.

Weapons Expert: Proficient in handling all types of firearms and melee weapons, and is also a master at throwing a shield.

World War II: Bucky was a sergeant in the 107th Infantry Regiment. When his unit was captured by H.I.D.R.A., he was rescued by Steve Rogers. He later joined the elite Howling Commandos to fight the Nazis.

Birth of the Winter Soldier: During a mission in the mountains, Bucky fell off a train and disappeared without a trace. He survived thanks to H.I.E.R.Y. experiments, losing his left arm (which was replaced with a cybernetic prosthesis) and having his memory erased. For decades, he was kept in a cryogenic chamber and used as an elite Soviet assassin.

Return and Redemption: In the modern era, his memory began to return thanks to Steve Rogers. After years of rehabilitation and overcoming his injuries, Bucky received a new vibranium arm in Wakanda and took the name White Wolf.

James Buchanan "Bucky" Barnes is a World War II veteran and best friend of Steve Rogers (Captain America). Having risen from a brave sergeant to a brainwashed killer (the Winter Soldier), he redeemed himself by becoming a legendary superhero and member of the team.