as Mr. Leuchtag (uncredited)
as Dr. Schmidt
as Henry 'Pop' Gehrig
as Herman Felsburg
as Brock (uncredited)
as Dr. Anton Marek
as The German
as Doctor
as Personalchef Klapper
as Professor Berdorff
as Capt. Angst
as Professor Träumer
as Siegfried
as Major Domo
as Aldo Von Metz
as Hotel Manager
as Dr. Lubbeck
as Riederer, Amtshauptmann von St. Vigil
as Haslinger
as Jean Lamarte
as Owner of Puppet Show
as Peter
as Herr Schultz the Innsbruck Forger (Uncredited)
as Gustav Muller
as Dr. Fritz Heine
as Herman Bauer, bugomaster
as Zuschauer
as Dr. Grazlich (Doc Powers' Partner)
as Dr. Schickel
as Herman Miller
as Hotelier Brunn
as Louis
as German Piano Accompanist (uncredited)
as Dr. Gerhardt
as Graub
as Capt. Ziemer (uncredited)
as Mr. Otto
as Vetter, der Pfarrer von Sankt Jakob
as Li Yoseph
as Grand Duke Otto
as Papa Julius Steelman
as Papa Svoboda
as Bratfisch
as Wilhelm
as Mr. Puft
as Generaldirektor Leon
as Pastor
as Caesar
as Carl Baumann
as Theaterdirektor
as Dir. Rohrbach
as Livius Heintze, Unterwäschefabrikant
as Arbeiter
as Dr. Szicki
as Professor Berger
as Dr. Mueller
as Popsy Lorenz
as Mr. Steinach
as Otto
as Binns
as School Teacher (as Ludwig Stossel)
as Mr. Novak (uncredited)
as Der Hoteldirektor
as Valentin Rainer
as Dr. Breithaut
as Pichler
as Otto Kessler
as Adolph Van Beers
as Professor
as Professor Roff
as Professor Harnish
as Jonathan Bigby / clock-keeper
