as Pierre Luigi - Photographer

as Prof. Gruber

as Lochner

as Dr. Schwatzbacher

as Rossi

as Walter Vogel

as Customer

as George II

as Hugo Bergmann

as Brunet

as Schroeder

as Mr. Krohn

as Schlip

as Hendricks

as Dr. Hans Tautz

as Herman

as Herr Schindler (uncredited)

as Professor Topolski

as Doctor Novotny

as Schmidt

as Professor Hansen

as Dr. Odenheim

as Dr. Fergus

as Brodcynsky

as Head Waiter

as Carlo Penezzi

as Papa

as Mario - Waiter at the Savoy

as Man with Microscope

as Morgue Keeper

as Dr. Schrott

as Leon Stoltz

as Dr. Rosen

as Tony - Cafe Proprietor

as Kublai Khan

as Bandleader at Alligator Rally (uncredited)

as Professor

as Ambrose Solto

as Police Chief (uncredited)

as Igy Pulitzer

as Paolo Vespucci

as Postman