Is friends with his co-stars Toby Hemingway and Chace Crawford from The Covenant (2006).

He is Romanian. At age 8, his mother moved with him from Romania to Vienna, Austria, where she was employed as a pianist. When he was age 12, they moved to Rockland County, New York, where his mother married the headmaster of an American private school.

He speaks English and Romanian fluently. In Captain America: Civil War (2016) he actually speaks Romanian in the first scene set in Bucharest, Romania.

Graduated from Rutgers University in New Brunswick, New Jersey with a BFA in Acting.

Attended the famous performing arts summer camp Stagedoor Manor.

Before being cast as James “Bucky” Barnes in Captain America: The First Avenger (2011), he was considered for the ‘Steve Rogers/Captain America’ part.

Did all his own stunts in the movie The Covenant (2006).

Starring in Eric Bogosian’s play “Talk Radio”. [April 2007]

He was in a relationship with Leighton Meester from 2008 to 2010, with Dianna Agron from 2011 to 2012, with Jennifer Morrison from 2012 to 2013, and with Russian actress Margarita Levieva from 2014 to 2016.

He has worked twice with Academy Award winning director Jonathan Demme, in Rachel Getting Married (2008) and Ricki and the Flash (2015).

He appears in three features nominated for a ‘Best Picture’ Academy Award: Black Swan (2010), The Martian (2015), and Black Panther (2018).

Has portrayed a troubled, closeted gay son of a powerful parent in three different productions, Martin Waters in The Architect (2006), Jack Benjamin in Kings (2009), and T.J. Hammond in Political Animals (2012).

Sebastian had a blink-and-you’ll-miss-it scene as Bucky Barnes at the very end credits of Black Panther. When his mom saw the film she didn’t stay for the end credits, thus missing her son’s scene.

He is best friends with his Marvel co-star and on-screen frenemy Anthony Mackie.

He had to have a new metal arm molded and made for his character of Bucky Barnes/The Winter Soldier in Captain America: Civil War (2016) because he had gained over twenty pounds of muscle for the role and became too big to fit in his old one.

His mother’s name is Georgeta.

Has had a love of astronomy since childhood, and considered working in the field before acting.

His character Bucky Barnes/The Winter Soldier’s trademark long hair has always been a wig except for in Captain America: Civil War (2016) because he had enough time to actually grow his hair out. In every other film portraying the same character, he didn’t have enough time for it to grow to the proper long length because of other projects he was filming.

He portrayed the brother of Hayden Panettiere’s character in The Architect (2006), and her boyfriend in Hayden Panettiere: Wake Up Call (2008).

His godmother is makeup mogul and fellow Romanian Anastasia Soare of ‘Anastasia Beverly Hills’.

Born at 5:00pm-EEDT.

He almost didn’t have a career as an actor. In a 2017 interview, he told that his mother kept sending him to auditions back when he was a kid which led to his first film appearance in Michael Haneke’s 71 Fragments of a Chronology of Chance (1994). Stan didn’t enjoy the working process, telling his mom he had a horrible time shooting the movie and that he didn’t want to pursue a career with it. He changed his mind after acting in his first school plays.

He’s an only child.

He has had a role as a twin twice. In Political Animals, he had a twin brother and in Kings, he had a twin sister.

He learned to play drums for his role as Tommy Lee in Pam and Tommy. He also had fake tattoos and real piercings.