Valérie Boisgel
2nd Seductress Third Class (uncredited)
Jean-Louis Comolli
Prof. Jeckell (uncredited)
Michel Delahaye
von Braun's Assistant (uncredited)
Christa Lang
1st Seductress Third Class (uncredited)
Szabó László
Chief Engineer (uncredited)
Howard Vernon
Léonard von Braun (uncredited)
Ernest Menzer
Red Star Hotel Receptionist (uncredited)