GG Allin

Kevin Michael "GG" Allin was an American punk rock musician who performed and recorded with many groups during his career. His live performances often featured transgressive acts, including self-mutilation, defecating on stage, and assaulting audience members, for which he was arrested and imprisoned on multiple occasions. AllMusic called him "the most spectacular degenerate in rock n' roll history", while G4TV's That's Tough placed him second on their list of "toughest rock stars in the world".