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