Dillon Francis Casey (born October 29, 1983) is an American-born Canadian actor and producer. He is best known for his role as Sean Pierce in The CW action-thriller television series Nikita.
Casey was raised in Oakville, Ontario. His father, Richard, is a urologist, and his mother, Patrice, is an image consultant. After graduating from Oakville Trafalgar High School, Casey graduated from McGill University with a Bachelor of Science degree in 2005 and received a Master of Economics degree from the University of Toronto.
He moved to Toronto, just to return to his roots where he was chosen to play the role of "Trevor Lemonde" in a short running CBC show called MVP. The show garnered attention for the actor, putting him on a giant billboard in his underwear in Times Square.
Casey relocated to Los Angeles, California for his career in January 2009.
In July 2011, Casey appeared as Brad in a very notable episode of Torchwood: Miracle Day titled "Dead of Night", the season's third episode.
He had recurring roles in the shows The Vampire Diaries, Being Erica, and Skins.
He obtained his first lead role for the movie Creature which was released in September 2011. The movie was unsuccessful both at the box office and with most critics; Casey was cast afterward in the 2012 Valentine movie The Vow. The movie was successful at the box office and is currently the fourth-highest weekend debut of 2012. In 2011, He was cast as Sean Pierce which is currently his best-known role to date, a Navy Seal, in the action show Nikita which was meant to only be a short-term recurring role, but he was upgraded to series regular later on in the same season. The show was renewed for a third season that began airing in October 2012. He continued on as a main cast member of the show until his character's death in the latter part of that season.