- Giovanni Cianfriglia
- Superargo
- Gérard Tichy
- Diabolikus
- Loredana Nusciak
- Diabolikus' Girlfriend
- Mónica Randall
- Lidia, Superargo's Girlfriend
- Josep Castillo Escalona
- Col. Alex Kenton
- Emilio Messina
- Diabolikus' Assistant
- Geoffrey Copleston
- Conrad, the Council President
- Artemio Antonini
- (uncredited)
- Fortunato Arena
- Pirate in Speedboat
- Bruno Ariè
- Pilot of the Cargo Ship
- Omero Capanna
- Gangster
- Pietro Ceccarelli
- Henchman
- Enrico Chiappafreddo
- Henchman
- Gilberto Galimberti
- Henchman in Grotto
- Biagio Gambini
- Henchman in Abduction Scene
- Alfonso Giganti
- Henchman
- Veriano Ginesi
- Henchman in Ring
- Enzo Mondino
- Doctor in Superargo's Tests
- Vezio Natili
- Captain
- Massimo Righi
- Wrestling Announcer
- Amerigo Santarelli
- Henchman
- Sergio Testori
- Henchman
- Valerio Tordi
- Professor Presenski
- Pietro Torrisi
- (uncredited)
- Bruno Ukmar
- Henchman
- Franco Ukmar
- Henchman
