Features Madame Mayhem’s Percy Trayanov – GEAR MASTERS (Revisited) Ep. 126 [VIDEO] On this episode of DTB’s “Gear Masters (Revisited)”, Percy Trayanov, bassist for the hard rock artist, Madame Mayhem, shows off the gear that he uses onstage, while on tour with Mushroomhead, Sumo Cyco and Product of Hate.