A. R. Penck, German painter and sculptor
Ralf Winkler, alias A. R. Penck, who also used the pseudonyms Mike Hammer, T. M., Mickey Spilane, Theodor Marx, "a. Y." or just "Y" (5 October 1939 – 2 May 2017) was a German painter, printmaker, sculptor, and jazz drummer. A neo-expressionist, he became known for his visual style, reminiscent of the influence of primitive art.