Credit: Video Still

Things that are sad: The fact that Sebastian Stan may never return as the Mad Hatter on Once Upon a Time because he's busy being a big movie star now. Things that are awesome: Sebastian Stan is a big movie star now! Even more awesome: If Captain America: The Winter Soldier is half as good as this new trailer makes it look, we'll probably be seeing Sebastian in many more movies to come.

For those not in the know, Winter Soldier is the second Captain America film in the modern Marvel Cinematic Universe. In the first Captain America flick, Captain America: The First Avenger, Sebastian played Captain America's best bud, Bucky Barnes. In that film, Bucky fell to his apparent death, but as comics fans know, it's hard for characters to stay truly dead. Bucky is, in fact, revived as the Winter Soldier, who becomes Captain America's foe.

And the results? Are epic, at least based on this newly released trailer for Winter Soldier, which leaves us breathless in anticipation of the flick — and, especially, of seeing Sebastian was the baddie. We aren't shown a lot of him, but the few glimpses we get make him look truly badass.

Check it out!


You can catch Captain America: The Winter Soldier in theaters starting April 4, 2014.

Rebecca Martin is an Associate Editor at Wetpaint Entertainment and our resident Game of Thrones, Breaking Bad, and genre TV expert. Follow her on Twitter and Google+!