Tomahawk is an American experimental alternative metal/rock supergroup. They formed in 1999 when Fantômas, ex-Mr. Bungle and Faith No More singer/keyboardist Mike Patton and ex-The Jesus Lizard guitar player Duane Denison started swapping tapes with the intention of collaborating. Denison then recruited ex-Helmet drummer John Stanier, while Patton recruited then-Melvins/ex-Cows bass player Kevin Rutmanis into the group.