Rudolf IV/Rudolf V/Sidney Frewin

Peter Sellers

Acting

Rupert

Stuart Wilson

Acting

Princess Flavia

Lynne Frederick

Acting

Countess Montparnasse

Elke Sommer

Acting

Count Montparnasse

Gregory Sierra

Acting

Mauban

Catherine Schell

Acting

Duke Michael

Jeremy Kemp

Acting

Archbishop

John Laurie

Acting

Johann

Ian Abercrombie

Acting

Simon Williams

Acting

Colonel Zapt

Lionel Jeffries

Acting

Michael Balfour

Acting

Graham Stark

Acting

Michael Segal

Acting

Arthur Howard

Acting

Norman Rossington

Acting

Joseph (uncredited)

Brendan Dillon

Acting