Hemophiliac – A collaborative project of Mike Patton, Ikue Morn and John Zorn. They produced a self-titled album and 2004 506 (both of which came out on Zorn’s Tzadik label).
House Of Discipline – A short-lived collaboration between Bob Ostertag, Otomo Yoshihide and Mike Patton. Their sole output is one track on “Angelica 1997” compilation which came out on an Italian label I Dischi Di Angelica.
Lovage – A collaboration between Dan The Automator, Mike Patton, Jennifer Charles (Elysian Fields) and Kid Koala. They released “Music To Make Love To Your Old Lady By” via Tommy Boy in 2001 and a self-titled EP on 75 Ark label.
Maldoror – A collaboration between Masami Akita (Merzbow) and Mike Patton. They released one album called “She”.
Peeping Tom – “Pop band led by Mike Patton”.
Dillinger Escape Plan – Although Mike did not became a constant member of the band, he recorded four songs with DEP which resulted in “Irony Is A Dead Scene” EP. Among other things, “Irony” includes a cover of Aphex Twin’s “Come To Daddy”.
Weird Little Boy – A collaboration between Chris Cochrane, John Zorn, Mike Patton, Trey Spruance and William Winant. They released one self-titled album in 1998 (via Avant label).