Peter Sellers
Rudolf IV/Rudolf V/Sidney Frewin
Stuart Wilson
Rupert
Lynne Frederick
Princess Flavia
Elke Sommer
Countess Montparnasse
Gregory Sierra
Count Montparnasse
Catherine Schell
Mauban
Jeremy Kemp
Duke Michael
John Laurie
Archbishop
Ian Abercrombie
Johann
Simon Williams
Lionel Jeffries
Colonel Zapt
Michael Balfour
Graham Stark
Michael Segal
Arthur Howard
Norman Rossington
Brendan Dillon
Joseph (uncredited)
