Richard Kiel
Golob
Corinne Cléry
Barbara Gibson
Barbara Bach
Lady Agatha
Leonard Mann
Nick
Arthur Kennedy
Dr. Kraspin
Ivan Rassimov
Lord Graal
Massimo Serato
Great Brother
M
Marco Yeh
Tom Tom
Venantino Venantini
V
Vito Fornari
José Quaglio
Attilio Duse
Ottaviano Dell'Acqua
Technician
Larry Dolgin
Narrator (voice)
Hal Yamanouchi
Humanoid Soldier
M
Milla Johansson
Girl who is drained of blood (uncredited)