Carl Brisson

as King Rudolf XIV / Carlo Rocco

Mary Ellis

as Elaine, the Queen of Langenstein

Edward Everett Horton

as Count Josef 'Peppi' von Schlapstaat

Katherine DeMille

as Fraülein Mimi

Eugene Pallette

as Conrad Q. Conley

Arnold Korff

as Baron Kraemer, Lord Chamberlain

Marina Koshetz

as Steffi