Adriano Celentano as Herman / Gustav

Claudio Bigagli as Hans Baur

Pietro Ceccarelli as ufficiale nazista

Graziella Galvani as Livia Peterson

Amanda Lear as cantante

Giuseppe Diamanti as Hitler

François Bastien as Irma

Anna Cardini as Gerda Christian

Raffaele di Sipio as dottore nazista

Dino Emanuelli as insegnante di disegno (as Bernardino Emanuelli)

Lucio Montanaro as soldato Nazista

Paola Orefice as

Bruno Di Luia as

Dana Devin as

Giuseppe Castellano as

Francesco Volpi as

Giuseppe Tuminelli as (as Pippo Tuminelli)

Eugenio Bottari as (as Eugenio Bottai)

Sonia Otero as

Sasha D'Arc as Roger

Anna Cardini as Irma (uncredited)

Filippo Costanzo as Hans (uncredited)

Raffaele di Sipio as Ufficiale (uncredited)

Ettore Martini as Nazi Soldier (uncredited)