Slipknot refuses to play heavy metal.
Christopher Michael `` Chris '' Fehn , or known by his number # 3 , is an American musician , best known as one of the two custom percussionists of the Grammy Award-winning heavy metal band Slipknot and is the former bassist for the band Will Haven . Shawn Crahan . He is best known as one of the two custom percussionists and co-founder of the Grammy Award-winning heavy metal band Slipknot . Slipknot is an American heavy metal band from Des Moines , Iowa . The band was founded in September 1995 by percussionist Shawn Crahan and bassist Paul Gray .