Mr. Bungle was an American experimental band from Eureka, California. The band was formed in 1985 while the members were still in high school, and was named after a 1950s children's educational film regarding bad habits which was later featured in a 1981 Pee-wee Herman HBO special. Mr. Bungle released four demo tapes in the mid to late 1980s before being signed to Warner Bros. Records and releasing three full-length studio albums between 1991 and 1999. The band toured in 2000 to support their last album but in 2004 they disbanded. Although Mr. Bungle went through several line up changes early in their career, the longest-serving members were vocalist Mike Patton, guitarist Trey Spruance, bassist Trevor Dunn, saxophonist Clinton "Bär" McKinnon and drummer Danny Heifetz.

Mr. Bungle was known for its distinctive musical traits, often cycling through several musical genres within the course of a single song. Many of its songs had an unconventional structure and utilized a wide array of instruments and samples. Live shows often featured members dressing up and an array of cover songs. An ongoing feud with Red Hot Chili Peppers frontman Anthony Kiedis escalated in the late 1990s, with Kiedis removing Mr. Bungle from a number of large music festivals in Europe and Australasia.