Conversation so far:
What was significant for Mr. Bungle in 1990?
During 1990, the band members left Eureka for San Francisco, in search of greater musical opportunities
When was Mr. Bungle's debut album released?
Their debut album, Mr. Bungle, was produced by jazz experimentalist John Zorn and was released on August 13, 1991
Are there any other interesting aspects about Mr. Bungle in the early 90s besides leaving for San Francisco and releasing their debut album?
To promote the album in some stores, a Mr. Bungle bubble bath was given away with copies of the record sold.

Question: Who worked on the debut album cover?
Self-contained rewrite: Who worked on the Mr. Bungle debut album cover?