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)
• Pop-eyed Catfish (performed by Dave Goelz)
• Stanley Weasel on guitar (performed by Jerry Nelson)
• Fred Lizard on drums (performed by Richard Hunt)
• Howard Snake on bass (performed by Jim Henson)

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.