Richter was born in Berlin to German actor Georg Alexander and Norwegian actress Aud Egede-Nissen.
His third marriage was to actress Vibeke Falk, daughter of businessman Thorolf Beyer Mowinckel.
[1] Following examen artium in 1935, Richter studied two years at the Carnegie Mellon School of Drama in Pittsburgh, United States.
From 1952 to 1956 he was assigned with Riksteatret, where his roles included "Mack the Knife" in The Threepenny Opera and "Nils Lykke" in Ibsen's play Lady Inger of Ostrat.
He also played leading roles in Så møtes vi imorgen (1946) and Himmel og helvete (1969), and minor roles in Et spøkelse forelsker seg, Tante Pose, I slik en natt, Lake of the Dead, and Olsenbanden.