Tomahawk is an experimental alternative metal/alternative rock supergroup from the United States. They formed in 2000 when Fantômas, ex-Mr. Bungle and ex-Faith No More singer/keyboardist Mike Patton and ex-The Jesus Lizard guitar player Duane Denison started swapping tapes with the intention of collaborating. Duane Denison then recruited ex-Helmet drummer John Stanier (also currently playing with Battles), while Mike Patton brought Melvins/Cows bass player Kevin Rutmanis into the fold.   Wikipedia