Kevin Conway
The Control Voice (voice) (uncredited)

Alex Diakun
Nicholas Prentice / Shopkeeper / Mr. Wilkes / Father Claridge / Moses Saxon / Mi...

Eric Schneider
Detective Barclay / Dr. Miles Osgoode / Dr. Golden / High Commander Reese / Dr. ...

Larry Musser
Detective Pete Button / Maj. Samuel Harbeck / Dr. Evan Swift / Jack Parsons / La...

Garvin Cross
Agent Bauer / Lt. Jackson / Officer #1 / Ralph Sutton / R & R Leader / Hawkes

Scott Swanson
Silver-Haired Man / Kyle Haller / Emil Dobkins / General Baker / Reverend Leblan...

Tom Butler
General Morehouse / Dr. Werner / Charlie Bouton / Mr. Evans / Charlie Rogers

Nathaniel DeVeaux
Roger Cress / Don Hattaway / Captain / Col. Birch / Security Captain

Kavan Smith
Quarterback / Lt. O'Neill / Harrison Taylor / Dominic Langton / Allan

Andrew Airlie
F.B.I. Agent Corey Lonn / Jonathan Morris / Dr. Kevington / Don / Marcus Fellows

Bruce Harwood
Dr. Avery Strong / Miles Pendergast / Dr. Norris / Technician

Barry W. Levy
Jules Mason / Vila / David Cohen / Colonel Bell

Robert Lewis
Gould / Miguel / Commander Guy LeClerc / Jake Sternlight

Joanna Piros
News Anchor / Reporter #1 / TV Interviewer / TV Newscaster

Tom Heaton
Crazed Man / Jim / Josiah Miller / Red

William deVry
Ben / Craig Swenson / Bartender

Benz Antoine
Security Guard #1 / Larue / Fence Guard / Sergeant

Mark Gibbon
Bailiff / Overseer #2 / Male Vorak

Frank C. Turner
Elder / Luther / Mikulak / Old Man

Scott Hylands
Dr. Howard Sarrazin / Governor Oleaga / Wayne / Col. Roger Tennent