Paulus Manker

Otto Weininger

Hilde Sochor

Adelaide, his mother / Adele, concierge

Andrea Eckert

Clara

Josefin Platt

Otto's Double

Hermann Schmid

Tietz

Sieghardt Rupp

Leopold, his father / Sigmund Freud

Peter Faerber

Berger

Otmar Klein

Clarinettist