Timmy & the Lords of the Underworld is a fictional band from the show South Park. They make the song Timmy and the Lords of the Underworld. (This is the article about the band, not the song.)
They were formed in 2000 by guitarist-keyboardist Skyler, bassist Mark and drummer Jonesy. Skyler’s girlfriend, Shelly Marsh was later recruited as the group’s vocalist, though she left after she and Skyler broke up. Timmy Burch was later brought in to form Timmy & The Lords Of The Underworld. Their song of the same-name became an instant hit, and Timmy & The Lords Of The Underworld were everywhere. Despite their success, Skyler was dissatisfied that Timmy was taking attention and coverage away from him. The group later split at the Lalapalalapaza festival after Skyler was encouraged by Phil Collins to start a solo project called Reach For The Skyler. After it bombed, Timmy & The Lords Of The Underworld reformed. They also released a single with their signature anthem on the A-Side and the new song “Timmy Livin’ A Lie” on the B-Side. They later joined Moop’s strike against illegal music downloading, though Timmy was absent.