The Winter Soldier (Sebastian Stan), Captain America: The Winter Soldier (2014)

While not nearly as charismatic as that Asgardian troublemaker, The Winter Soldier (Sebastian Stan) has quickly emerged among the more fascinating characters in the MCU. Once Steve Rogers’ childhood friend Bucky Barnes, he was captured by HYDRA and transformed into a mindless assassin with no memory of his previous life. When circumstances bring him up against Captain America, he very nearly slaughters Cap, Black Widow and Falcon in a series of intense confrontations befitting the deadly force of nature he’s become. Of course, once Cap learns of The Winter Soldier’s true identity, it sets off a chain reaction that will likely see Bucky regaining his memories and his willpower going forward. However, it’s very fortunate that the character’s allegiance may be changing since — as depicted in Captain America: The Winter Soldier "“ the chances of his imminent defeat were probably slimmer than our heroes would care to admit.

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