Diego Klattenhoff is a Canadian actor known for his portrayals of Mike Faber in the Showtime series Homeland and as FBI Agent Donald Ressler in The Blacklist. He has also appeared as Derek in Whistler and Ivan in Men in Trees.
The Blacklist
2013 - 2023 • Director
2013 - 2023 • Donald Ressler
Supernatural
2005 - 2020 • Duane Tanner
Homeland
2011 - 2020 • Mike Faber
Longmire
2012 - 2017 • Eli
Radius
2017 • Liam
Lavender
2016 • Alan Rutter
Psych
2006 - 2014 • Dylan Maxwell
Pacific Rim
2013 • Yancy Becket
After Earth
2013 • Veteran Ranger
Kilimanjaro
2013 • Troy
Unconditional
2012 • Billy
Smallville
2001 - 2017 • Josh Greenfield
The Dry Land
2010 • Henry
Mercy
2009 - 2010 • Mike Callahan
Anatomy of Hope
2009 • Brendan Casey
The Informers
2008 • Dirk
Lost Behind Bars
2008
Whistler
2006 - 2007 • Derek
Fire Serpent
2007 • Young Dutch
Firestorm: Last Stand at Yellowstone
2006
Fallen
2006 • Nathaniel (uncredited)
The Last Hit
2005 • Sasha
Sue Thomas: F.B.Eye
2002 - 2005 • Jason Albright
Ice Princess
2005 • Kyle Dayton
Cube Zero
2004 • Quigley
Mutant X
2001 - 2004 • Johnny
Mean Girls
2004 • Shane Oman
Blessings
2003 • Benny
Autobiography of an Insect
2003 • Cameron
Veritas: The Quest
2003 - 2004 • Tymus
Straight in the Face
2002 • Daniel