Diemonsterdie[1][2] is an American, Salt Lake City-based horror punk band, which was originally formed in 1995 as Casa Diablo.

Their name is a reference to the 1965 horror movie of the same name starring Boris Karloff (which was very loosely based on the H. P. Lovecraft story "The Colour Out of Space").

The band's seventh album, Fall to Your Knees (2010), was received well and featured in a glowing review on Fear Net in November 2010.

Despite commanding a global audience of thousands and a loyal worldwide fan base, the band has never been signed to a major label.

The album will feature 13 unreleased tracks celebrating 13 years since Casa Diablo transformed into Diemonsterdie and officially began defining themselves as horror punk.