Pierre Luigi - Photographer

Prof. Gruber

Lochner

Dr. Schwatzbacher

Rossi

Walter Vogel

Customer

George II

Hugo Bergmann

Brunet

Schroeder

Mr. Krohn

Schlip

Hendricks

Dr. Hans Tautz

Herman

Herr Schindler (uncredited)

Professor Topolski

Doctor Novotny

Schmidt

Professor Hansen

Dr. Odenheim

Dr. Fergus

Brodcynsky

Head Waiter

Carlo Penezzi

Papa

Mario - Waiter at the Savoy

Man with Microscope

Morgue Keeper

Dr. Schrott

Leon Stoltz

Dr. Rosen

Tony - Cafe Proprietor

Kublai Khan

Bandleader at Alligator Rally (uncredited)

Professor

Ambrose Solto

Police Chief (uncredited)

Igy Pulitzer

Paolo Vespucci

Postman