Brinke Stevens
Dr. Leslie Morgan
Tim Abell
McQueen
Ted Monte
Milo Tyrrell
Peter Spellos
Sergeant Frank Blaine
John Blyth Barrymore
Dr. Paul Hamilton
Nikki Fritz
Susan
Robert Quarry
Dr. Farrell (as Robert Connell)
Christopher Ray
Hybrid
Michelle Bauer
Pin Up (uncredited)
Fred Olen Ray
Dennis (photo) (uncredited)