Actor Sebastian Stan on Captain America’s Bucky

Appearing this past year in both Black Swan and Hot Tub Time Machine, actor Sebastian Stan is set for one of his most prominent roles to date come this July: Steve Roger’s "sidekick" Bucky Barnes in Captain America: The First Avenger.

MTV had the chance to chat with Stan about the role and about what we can expect from the character’s first big-screen appearance.

"Steve Rogers and Bucky are both orphans and kind of like brothers," Stan said, professing that he was unfamiliar with the comics before getting cast, "They kind of grow up together and look after each other. It’s a very human, relatable thing. And growing up in the Army is a very specific thing. There’s a certain way these guys carry themselves, there’s a certain etiquette, a certain body posture, the way that they interact. So I went back and read the comics and watched a lot of documentaries on World War II. "Band of Brothers" was very helpful."

Though the film looks to set up Barnes as a teammate soldier of Rogers, the character was, in the comic book continuity, a teenage orphan too young to join the army and who instead was brought to the battlefield as a mascot. After learning the identiy of Captain America, Barnes became his sidekick until he was presumed killed in action (alongside Cap). It was revealed decades later that Barnes had been captured by Soviet forces and reprogrammed into an assassin known as the Winter Soldier. Following Marvel’s Civil War, Rogers was again believed dead and Barnes inherited the mantle of Captain America himself.

"There’s a lot of CGI stuff and working with a green screen," Stan added of the effects work so far, "I hadn’t done that too extensively before. That was very challenging, because you’re just there surrounded by green walls, but there’s explosions going off around you, so you have to factor that in and maintain that in your imagination."

Head over the MTV’s Splash Page for the full interview.