Paulus Manker
Otto Weininger
Andrea Eckert
Clara
Sieghardt Rupp
Leopold, his father / Sigmund Freud
Hilde Sochor
Adelaide, his mother / Adele, concierge
Josefin Platt
Otto's Double
Hermann Schmid
Tietz
Peter Faerber
Berger
Otmar Klein
Clarinettist