The Riverbottom Nightmare Band, also known as "The Nightmare," is the last-minute addition to the talent show in Emmet Otter's Jug-Band Christmas. The band members include:
- Chuck Stoat on keyboards (performed by Frank Oz)
- Stanley Weasel on guitar (performed by Jerry Nelson)
- Fred Lizard on drums (performed by Richard Hunt)
- Howard Snake on bass (performed by Jim Henson)
- Catfish, for visual interest (performed by Dave Goelz)
The Riverbottom Nightmare Band's repertoire includes the self-referential "Riverbottom Nightmare Band".
When not performing on stage, the band members enjoy breaking traffic laws, riding their snowmobiles, and destroying merchandise.