L'invincibile Superman

Giovanni Cianfriglia

Superargo

Guy Madison

Prof. Wendland Wond

Luisa Baratto

Claire Brand

Diana Lorys

Gloria Devon

Aldo Sambrell

Kamir / Pao-Ki

Tomás Blanco

Davies

Sergio Testori

Jo Brand

Valerio Tordi

Professor Presenski

Aldo Bufi Landi

J.G. Stafford

Valentino Macchi

Bank Guard

Frank von Kuegelgen

Medical Examiner (voice)

Mauro Mannatrizio

Henchman in Cave