Wilhelm

Dr. Lubbeck

Mr. Novak (uncredited)

Siegfried

Doctor

Mr. Otto

Jean Lamarte

Herman Miller

The German

Dr. Grazlich (Doc Powers' Partner)

Dr. Mueller

Aldo Von Metz

Grand Duke Otto

Dr. Anton Marek

Professor Berdorff

Gustav Muller

Herman Bauer, bugomaster

Mr. Steinach

Herman Felsburg

Louis

Dr. Szicki

Peter Van Tyne

Popsy Lorenz

Dir. Rohrbach

Major Domo

Dr. Gerhardt

Binns

Graub

Pichler

Riederer, Amtshauptmann von St. Vigil

Papa Julius Steelman

Mr. Leuchtag (uncredited)

Hotelier Brunn

Baron Kiesel

Henry 'Pop' Gehrig

Pastor

Franz Polgar

Owner of Puppet Show

Dr. Fritz Heine

Carl Baumann

Dr. Schickel

Li Yoseph

Bratfisch

Personalchef Klapper

Vetter, der Pfarrer von Sankt Jakob

Papa Svoboda

Caesar

Capt. Angst

Arbeiter

Brock (uncredited)

Dr. Breithaut

Zuschauer

Freund

Der Varieté-Agent

Theaterdirektor

Generaldirektor Leon

Dr. Schmidt

Professor Träumer

Valentin Rainer

Livius Heintze, Unterwäschefabrikant

Der Hoteldirektor

Peter

Hotel Manager

Capt. Ziemer (uncredited)

Herr Schultz the Innsbruck Forger (Uncredited)

Professor Berger

Otto

German Piano Accompanist (uncredited)

Haslinger

Mr. Puft

School Teacher (as Ludwig Stossel)

Underground Leader