Sebastian Stan is a Romanian-American actor known for his versatile roles in film and television. He was born on August 13, 1982, in Constanța, Romania, and moved to the United States at a young age. Stan gained widespread recognition for his portrayal of Bucky Barnes in the Marvel Cinematic Universe, appearing in several films and the Disney+ series The Falcon and the Winter Soldier. In addition to his work in the Marvel franchise, Stan has appeared in various other projects, including the critically acclaimed film I, Tonya and the television series Once Upon a Time. His performances often showcase his ability to embody complex characters, earning him a dedicated fan base and critical acclaim.