Henry Silva

as Duke

Luigi Casellato

as Carlo 'Charlie' Sardi

Riccardo Salvino

as Hans Liedholm

Ezio Sancrotti

as Captain Simon Schultz

Franco Giornelli

as John McHarding

Vittorio André

as Prof. Schwartz

Katia Christine

as Kristy

Marco Guglielmi

as Captain Kreuz

Renato De Carmine

as Major Horst

Pietro Martellanza

as Sam the Brit

Maria Cristina Farnese

Paolo Magalotti

as Tall bearded OSS officer

Fulvio Mingozzi

as British intelligence officer

Marco Bogliani