Daniel Bosch as Bob

Marina Giulia Cavalli as Jane

Robert Marius as Lee

Luciano Pigozzi as Dr. Geoffrey

Charles Napier as Colonel Kovacks

Roberto Dell'Acqua as Guard (uncredited)

David Brass as Head Technician (uncredited)

Kenneth Peerless as Chopper Pilot (uncredited)

Michael Welborn as Security Officer (uncredited)

Albert Bronski as Security Officer Carlos (uncredited)

Donald Wilson as Technician (uncredited)

Frank Wannack as Guard (uncredited)

Curtis Carter as Boat Crew (uncredited)

Jeff Griffith as Security Officer Griffith

Philip Gordon as Security Guard killed by Snake (uncredited)