Dethklok is both a virtual band featured in the Adult Swim animated program “Metalocalypse,” as well as a real band created to perform the band's melodic death metal music in live shows. The band was created by Brendon Small and Tommy Blacha. Dethklok is sometimes cited as an example of "comedy rock" on par with bands such as GWAR and Spinal Tap. The music heard on “Metalocalypse” is performed by Brendon Small, with others as needed.
The first official Dethklok album was released in September 2007, entitled “The Dethalbum.” The album debuted at #21 on the Billboard 200 Albums chart.
The band released “Dethalbum II” in September 2009, and toured with Mastodon, High on Fire and Converge. The album peaked at #15 on the Billboard 200 Albums chart, the highest charting death metal album in the history of the Billboard 200, which was previously set by “The Dethalbum.” Small and drummer Gene Hoglan performed on both albums.