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