Sebastian Stan

Sebastian Stan is a Romanian-born American-raised actor who is best known for his television roles as Carter Baizen on The CW teen drama series Gossip Girl from 2007 to 2010, Jonathan "Jack" Benjamin on the NBC serial drama series Kings in 2009, and portrayed Jefferson/Mad Hatter on the ABC's fantasy drama Once Upon a Time in 2012. He also starred as Thomas "T.J." Hammond on the USA Network drama miniseries Political Animals in 2012.

He does the voice of Bucky Barnes in Carmen and Carmen 2.