winter solder

It seems like there might be a typo in your question. I believe you're referring to "Winter Soldier," a character from the Marvel Cinematic Universe (MCU). The Winter Soldier is a fictional character associated with Captain America and is portrayed by Sebastian Stan in the films.

The Winter Soldier, also known as James Buchanan "Bucky" Barnes, was originally introduced as Captain America's best friend and ally during World War II. However, he seemingly died during a mission and was presumed dead for many years. In reality, he was captured and subjected to intense experimentation and brainwashing by the organization HYDRA. They turned him into a highly skilled and brainwashed assassin with a metal arm.

The character's name "Winter Soldier" is a reference to the fact that he was cryogenically frozen between missions, only to be thawed out when HYDRA needed him to carry out covert and often lethal assignments.

The Winter Soldier is known for his incredible combat skills, proficiency with a variety of weapons, and his bionic arm, which grants him enhanced strength. He's a tragic figure in the MCU due to the loss of his memories and his struggle to regain his sense of self after being brainwashed and manipulated for years.

Throughout the MCU films, particularly in "Captain America: The Winter Soldier" and "Captain America: Civil War," Bucky Barnes plays a significant role as a conflicted character trying to come to terms with his past actions and find redemption. He eventually becomes an ally to the Avengers and works to undo the damage he caused while under HYDRA's control.

The Winter Soldier's story is characterized by themes of identity, friendship, and the moral complexities of his actions while controlled by HYDRA.