Earl Schenck

as George Hazelhurst

as Norton (uncredited)

as Professor Nichols (uncredited)

as Col. Hendricks (uncredited)

as Forbes

as John Aldous

as Jonas

as Grant Elliot

as Colonel Rathbone

as Emperor Maximilian - Prologue

as Rodolfo Emanon

as Narraboth, Captain of the Guard

as Blais

as Commissionnaire Desmard

as Harlan Carr

as Alec Langley

as Clarence Hyle

as Joeffrey Vandermuellen

as John Wilmot

as Professor Fullerton

as Lionel Brooks

as The Brother

as Lieutenant Ober

as Dick Moreland

as Crown Prince of Germany

as Emanuel Müller

as Crown Prince

as Robert Busch / Crown Prince

as Alexander Vernon

as George Pratt

as Robert Haskell