Jake Gyllenhaal
Bronco
Quentin Beck / Mysterio
Ronnie Reed
Detective Loki
Dalton
Louis Bloom
Jamie Randall
Master Sergeant John Kinley
Robert Graysmith
Sam Hall
Billy 'The Great' Hope
Donnie Darko
Colter Stevens
Prince Dastan
Tommy Cahill
Scott Fischer
Anthony Swofford
Tony Hastings / Edward Sheffield
Danny Sharp
Brian Taylor
Searcher Clade (voice)
Joe Baylor
Jim Prescott (voice)
Douglas Freeman
Morf Vandewalt
Jimmy Livingston
Jerry Brinson
Jeff Bauman
John Morris