Norman Kerry
— Prince Boris Alexander Emanuel Augustus
Greta Nissen
— Princess Flavia Eugenia Marie
Marc McDermott
— Prince Karl
Cissy Fitzgerald
— Countess Leopold Marjenka
Agostino Borgato
— King
Carrie Daumery
— Queen
Oscar Beregi Sr.
— Prime Minister
Nigel Barrie
— Captain Emanuel Menisurgo
Károly Huszár
— Prince's Guard
Vladimir Glutz
— Napoleon Alexander Caesar
Blackie Thompson
— Prince Michael
Alphonse Martell
— Berzoff
Antonín Vaverka
— Aide
Arnold Kent
— Captain