Stephen Oyoung, also known as Stephen O'Young or Steve O'Young, portrayed Einherjar Guard in Thor.
He was also a utility stunts performer in Thor.
- Stephen O'Young is one of the actors who have portrayed multiple characters in the Marvel Cinematic Universe.
- Stephen O'Young previously worked with Josh Schwartz in Chuck.
- Stephen O'Young also voiced and provided the likeness for Martin Li/Mister Negative in the video game Spider-Man.
- Stephen O'Young is one of the actors to portray characters for both Marvel Studios and DC Entertainment. He portrayed Tokugawa Iemitsu in Legends of Tomorrow.
- Stephen O'Young was a stunt performer in the 20th Century Fox production Deadpool.
- Stephen O'Young was a motion capture stunt performer in the DC Entertainment productions Batman: Arkham City and Batman: Arkham Origins.