RIP Dungeon Master.
Ernest Gary Gygax (July 27, 1938 – March 4, 2008 ) was an American writer and game designer, best known for co-creating the pioneering role-playing game Dungeons & Dragons (D&D) with Dave Arneson, and co-founding the company Tactical Studies Rules (TSR) with Don Kaye in 1974. Gygax is generally acknowledged as the father of the role-playing game.