Yes, it’s everyone’s favorite Winter Soldier!
Sebastian has been acting since 2003 but it wasn’t until Captain America: The First Avenger that I had any idea who he was. He played the part of Bucky Barnes so well. I want my own Bucky! He went on to reprise the role in Captain America: The Winter Soldier and Captain America: Civil War (which just came out this past Friday).
Stan had a 6-episode arc on Once Upon a Time as the Mad Hatter/Jefferson a few years after appearing on Gossip Girl.
Sebastian was quite busy in 2015. He had three movies out: The Bronze, Ricki and the Flash, and The Martian as well as a cameo in Ant-Man.
He is currently filming I’m Dying Up Here (TV movie) and I’m Not Here, due out next year.