Prof. Ludwig Weiss

Prof. Leon Dushenko

Dr. Murton

Prof. Gollner

Joseph

Professor Franz Menzel

Manager of Teatro La Fenice

Lhama

Vittorio Miranda

Old Man on Train (uncredited)

President of the Medical Society (uncredited)

Otto

Karl Kopek

Scientist (uncredited)

Papa Moreau

Pieter Sluys

Prof. Pal Kudnic

Winkler

Dirk Brak