Peter Paul as Rafe

David Paul as Vic

Martin Mull as Dr. Bruekner

Ari Meyers as Holly Sherwood

Claudia Christian as Dr. Irene Marsh

Richard Kiel as Irving

Michael Winslow as Hap

Thomas Gottschalk as Mr. Roberts

David Carradine as Sweeney

Tommy Lister Jr. as Z

Richard Moll as Thornton

Tony Longo as Supervisor

Peter Lupus as Bad Guy #1

Sal Landi as Bad Guy #2

Rafer Johnson as Johnson

Jimmy Briscoe as Jimmy

Darcy LaPier as Donna

David Bowe as Security Guard #1

Alfredo Septién as Security Guard #2

Jacob Kenner as Mitchell

Judy Toll as Pregnant Woman

Cecile Krevoy as Waitress in Truck Stop

Carl Ciarfalio as Edwards

Bradley Jenkel as Scientist

David Tausik as Scientist

Roberto Del Pozzo as Truck Driver at Diner