Slipknot's mix of grinding, post-Korn alternative metal, Marilyn Manson-esque neo-shock rock, and rap-metal helped make them one of the most popular bands in the so-called nu-metal explosion of the late '90s. But even more helpful was their theatrical, attention-grabbing image: the band always performed in identical industrial jump suits and homemade Halloween masks, and added to its mysterious anonymity by adopting the numbers ...full biography