as Professor Nichols (uncredited)
as Col. Hendricks (uncredited)
as George Hazelhurst
as Norton (uncredited)
as Narraboth, Captain of the Guard
as Colonel Rathbone
as Clarence Hyle
as Alexander Vernon
as Blais
as Harlan Carr
as George Pratt
as Commissionnaire Desmard
as The Brother
as Emanuel Müller
as Professor Fullerton
as Alec Langley
as Lieutenant Ober
as Crown Prince of Germany
as Joeffrey Vandermuellen
as Robert Busch / Crown Prince
as Lionel Brooks
as Robert Haskell
as Emperor Maximilian - Prologue
