Top Billed Cast

1. 

   Paolo Villaggio

   Dr. Jekyll / Mr Hyde

2. 

   Edwige Fenech

   Barbara Wimply

3. 

   Gianrico Tedeschi

   James / Jeeves

4. 

   Gordon Mitchell

   Pretorius

5. 

   Paolo Paoloni

   Professor

6. 

   Guerrino Crivello

   Student

7. 

   Eolo Capritti

   Henchman

8. 

   Francesco Anniballi

   Henchman

9. 

   Walter Williams

   PANTAC Top President

10. 

    Clemente Ukmar

    Henchman

11. 

    Geoffrey Copleston

    Archibald Gold

12. 

    Paola Arduini

    Stewardess

13. 

    Angelo Boscariol

    PANTAC Board Member (uncredited)

14. 

    Luciano Foti

    Class Member (uncredited)

15. 

    Alfonso Giganti

    Industrialist (uncredited)

16. 

    Juba Kennerley

    Gentleman (uncredited)

17. 

    Giuseppe Marrocco

    PANTAC Board Member (uncredited)

18. 

    Fulvio Mingozzi

    PANTAC Board Member (uncredited)

19. 

    Alessandro Tedeschi

    Professor introducing Jekyll (uncredited)

20. 

    Luciano Zanussi

    PANTAC Board Member (uncredited)