Fantômas is an American heavy metal supergroup formed in 1998 in California. It features vocalist Mike Patton, drummer Dave Lombardo (ex-Slayer), guitarist Buzz Osborne (Melvins) and bassist Trevor Dunn. The band is named after Fantômas, a supervillain featured in a series of crime novels popular in France before World War I and in film, most notably in the '60s French movie series.

Michael Allan Patton is an American singer, songwriter, producer, and voice actor, best known as the lead vocalist of the American rock bands Faith No More and Mr. Bungle. Noted for his vocal proficiency, diverse singing techniques, wide range of projects, style-transcending influences, eccentric public image and contempt for the music industry, Patton has earned critical praise and influenced many contemporary singers. In addition to his most popular endeavor, Faith No More, Patton is also co-founder and lead vocalist of Mr. Bungle, and he has fronted and/or played with Tomahawk, The Dillinger Escape Plan, Fantômas, Moonchild Trio, Kaada/Patton, Dead Cross, Lovage, Mondo Cane, the X-ecutioners, and Peeping Tom. Consistent collaborators through his varied career include avant-garde jazz saxophonist John Zorn, hip hop producer Dan the Automator and classical violinist Eyvind Kang.