He was best known for his roles in Shakespeare's Antonio, with Voss as Shylock, and Jago, with Voss as Othello, and especially in black comedies, such as Goldberg (and Mr. Jay) in George Tabori's "Goldbergvariationen", in Neil Simon's "The Sunshine Boys", Samuel Beckett's "Endspiel" and Genet's "Die Zofen". 