Acting · b. 1952 · Coburg, Germany Klaus Janson Acting Joker: Put on a Happy Face Self 2020 Masterpiece: Frank Miller's The Dark Knight Returns Himself 2013 Elektra: Incarnations Himself 2005 Other Credits Batman: The Dark Knight Returns Graphic Novel 2013 Batman: The Dark Knight Returns, Part 2 Graphic Novel 2013 Batman: The Dark Knight Returns, Part 1 Graphic Novel 2012 Agent-readable