Kevin Conway
The Control Voice (voice) (uncredited)

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

Eric Schneider
Triune / Alien Inquisitor / Dr. Golden / Detective Barclay / High Commander Rees...

Larry Musser
Dr. Evan Swift / Larry Leonard / Detective Pete Button / Clerk / Jack Parsons / ...

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

Scott Swanson
Kyle Haller / Emil Dobkins / Reverend Leblanc / General Baker / Silver-Haired Ma...

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

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

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

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

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

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

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

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

Tom Heaton
Josiah Miller / Crazed Man / Jim / Red

William deVry
Ben / Craig Swenson / Bartender

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

Mark Gibbon
Bailiff / Overseer #2 / Male Vorak

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

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