Lengyel first worked with the band on the demo "The Raging Wrath of the Easter Bunny", and later joined as a full-time member. He appears on the band's first two major label albums, Mr. Bungle (1991) and Disco Volante (1995), and also appears along with several other Mr. Bungle members as a special guest on the Melt Banana song "Area 877 [Phoenix Mix]", from their 1998 album Charlie. According to Mr. Bungle bassist Trevor Dunn, "we unanimously decided to go on without him because he wasn't growing with the rest of the band and we were running out of things for him to do. He got pissed off and I haven't heard from him since."
His family name means Polish in Hungarian.
- "trevordunn.net". trevordunn.net. Retrieved 2008-04-18.