Hybrid

Brinke Stevens

Dr. Leslie Morgan

Tim Abell

McQueen

Ted Monte

Milo Tyrrell

J.J. North

Carla Ferguson

Peter Spellos

Sergeant Frank Blaine

John Blyth Barrymore

Dr. Paul Hamilton

Bob Bragg

Pike

Nikki Fritz

Susan

Robert Quarry

Dr. Farrell (as Robert Connell)

Christopher Ray

Hybrid

Michelle Bauer

Pin Up (uncredited)

Fred Olen Ray

Dennis (photo) (uncredited)