Avenger X

Pier Paolo Capponi

Mister X

Gaia Germani

Timy

Armando Calvo

George Lamarro

Anna Zinnemann

Dolly

Umberto Raho

Jack MacDougall

Renato Baldini

Antonio 'Joe' Caruso

Franco Fantasia

Inspector Roux

Antonio Gradoli

Commissioner Sebastian

Nieves Salcedo

Veronica Strindberg

Pino Polidori

Lembus

Brizio Montinaro

Younger Henchman

Gaetano Quartararo

Commissioner Mariotti

Gustavo Simeone

Ben Braien

Costanza Strina

Giancarlo Prete

Lamarro Henchman

Dante Posani

Jim

Helga Liné

Gloria

Fulvio Mingozzi

Party Guest (uncredited)

Francesco Narducci

Sergeant Joe (uncredited)

Mario Villani

Production Secretary

Renata Parisi

Script Supervisor

Roberto Ochoa

Camera Operator