First Look! Sebastian Stan As The Winter Soldier

As Captain America's faithful sidekick Bucky Barnes, Sebastian Stan was decidedly cute.

But not any more, if this first look at the actor in costume as The Winter Soldier is anything to go by.

The superhero sequel, based on Ed Brubaker's 2010 comic book arc, sees Bucky return from the dead as a brainwashed Soviet assassin.

And it looks like he's set to give Steve Rogers one hell of a fight as Stan and Chris Evans were spotted shooting a brutal looking fight scene last week. Snaps from the set see Bucky leave his former friend bruised and beaten after the battle. 

Scarlett Johansson, Anthony Mackie, Cobie Smulders, Georges St-Pierre, Frank Grillo, Hayley Atwell, Toby Jones, Emily VanCamp, Maximiliano Hernández, Robert Redford, Alan Dale and Samuel L Jackson will also feature in Captain America: The Winter Soldier, which arrives in cinemas on April 4, 2014.