Paolo Villaggio
Dr. Jekyll / Mr Hyde
Edwige Fenech
Barbara Wimply
Gianrico Tedeschi
James / Jeeves
Gordon Mitchell
Pretorius
Paolo Paoloni
Professor
Guerrino Crivello
Student
Eolo Capritti
Henchman
Francesco Anniballi
Henchman
W
Walter Williams
PANTAC Top President
Clemente Ukmar
Henchman
Geoffrey Copleston
Archibald Gold
P
Paola Arduini
Stewardess
Angelo Boscariol
PANTAC Board Member (uncredited)
Luciano Foti
Class Member (uncredited)
Alfonso Giganti
Industrialist (uncredited)
J
Juba Kennerley
Gentleman (uncredited)
Giuseppe Marrocco
PANTAC Board Member (uncredited)
Fulvio Mingozzi
PANTAC Board Member (uncredited)
Alessandro Tedeschi
Professor introducing Jekyll (uncredited)
Luciano Zanussi
PANTAC Board Member (uncredited)