The series was originally pitched as Deathclock, but the name could not be used due to an existing trademark. The show and the main characters' band were then renamed Dethklok. The show's title was then extended to Death Clock Metalocalypse, although the starring band still retained the name Dethklok. The crew finally shortened the title to Metalocalypse because the extended show title was too complicated.

The show's first season consists of twenty eleven-minute episodes, the first of which premiered on the Adult Swim Fix on August 4, 2006 and on Adult Swim proper the following Sunday. According to AdultSwim, Metalocalypse has been renewed for a second season consisting of twenty episodes to begin airing September 23, 2007, which is one week before the CD release. The Metalocalypse premiere was the #1 rated show in its timeslot among males aged 18-34, and earned the network's best premiere delivery and ratings to date in 2006. Among the top ad-supported basic cable programs of the week, Metalocalypse ranked #12 among men 18-34 and #6 among men 18-24. The series premiere ranked #30 for the week among adults 18-34.

• Official Adult Swim Dethklok MySpace
• Tommy Blacha's MySpace
• IGN Interview with Dethklok
• Synthesis Radio interview with Brendon Small
• Synthesis Radio interview with Tommy Blacha
• MP3 audio interview with Brendon Small
• Brendon Small's website
• Gearwire interview with Brendon Small on creating Dethklok music
• Metalocalypse on Adult Swim UK
• Shocker adds Metalocalpyse to action figure line up!
• [http://www.shockertoys.com/news_SDCC2007.htm Metalocalypse San Diego Comic Con action figures!