as Pierre Luigi - Photographer
as Police Chief (uncredited)
as Dr. Rosen
as Hugo Bergmann
as Dr. Odenheim
as Doctor Novotny
as Head Waiter
as Lochner
as Dr. Schwatzbacher
as Tony - Cafe Proprietor
as Herr Schindler (uncredited)
as Carlo Penezzi
as Walter Vogel
as Prof. Gruber
as Mario - Waiter at the Savoy
as Rossi
as Man with Microscope
as Paolo Vespucci
as Schmidt
as Bandleader at Alligator Rally (uncredited)
as Professor Hansen
as Professor Topolski
as George II
as Dr. Schrott
as Dr. Fergus
as Leon Stoltz
as Brodcynsky
as Kublai Khan
as Morgue Keeper
as Herman
as Customer
as Dr. Hans Tautz
as Mr. Krohn
as Schlip
as Brunet
as Igy Pulitzer
as Schroeder
as Professor
as Mr. Justin
as Jerome
as Watchmaker / Number Fifty Four
as Astolat
as Prof. Yuri Dutrov
