Diego Klattenhoff (born November 30, 1979) is a Canadian actor best known for playing Mike Faber in the Showtime series Homeland. He has also appeared as Derek in Whistler and Ivan in Men in Trees, and currently stars as FBI Agent Donald Ressler in The Blacklist.

Early life

Klattenhoff was born in Nova Scotia, Canada. He moved to Toronto at the age of 19 to pursue an acting career. For a number of years, he worked as a bartender while studying in theater workshops.

Career

Klattenhoff studied with some of Canada's most respected acting coaches, including David Rotenberg, Bruce Clayton, and Rae Ellen Bodie. His first notable acting role was in Mean Girls (2004). He followed that with a string of appearances in notable TV shows like Smallville and Stargate SG-1, and films like Lucky Number Slevin (2006). Since 2006, he has been in recurring roles like Young Jacob in CBC Television's At the Hotel, Derek in CTV's Whistler, Ivan Palacinke in ABC's Men in Trees, and Mike Callahan in NBC's Mercy.