Paul (as Michael Coby)
Dr. Gulik (as Cameron Mitchel)
Kronos / Supersonic (as Richard Yesteran)
Patricia Morgan / Gordon (as Diana Polakow)
Prof. Morgan / Gordon (as John Caffarel)
Peterson (as Frank Brana)
Borracho (as Javier Cameos)
Joe
Bill
Harrison
Italian Chef
Peterson's Lieutenant (as Emilio Higueras)
Bar Drunk
Waitress (as Marta Fernandez)
Voz de la nave espacial (voice) (uncredited)