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Dethklok is a virtual death metal band featured in the Adult Swim animated television series Metalocalypse. The first official Dethklok album was released on September 25, 2007, entitled The Dethalbum. The album debuted at number 21 on Billboard Magazine's Top 200 list. The band released Dethalbum II on September 29, 2009, and toured with Mastodon, High on Fire and Converge.

Voiced by: Brendon Small  Nathan Explosion is the frontman, lead vocalist and "lyrical visionary" of Dethklok. Portrayed as a tall, bulky figure, with long black hair, black nails, and green eyes, Nathan speaks with a death growl even when not singing. He did not speak a word until he was five years old and in high school excelled only in frog dissection and football. According to his dating profile, Nathan describes his ethnicity as "White/Native American". He was raised in New Port Richey, Florida. He is the lead songwriting force in Dethklok, and uses violent imagery or plot elements when writing and composing song material. Nathan is slightly more sensible than the rest of the band, and a great deal more emotionally stable, though he is still incompetent at most things in life such as the use of a grocery store or reading a cooking recipe. Despite this, he does seem to have some knowledge in specific areas, such as negotiating a contract, extensive knowledge of rock culture, and a proficiency in French. He attempts to get his GED in "Go Forth And Die", and only fails in part due to the band's influence, and in "Fatherklok" tells Murderface not to interfere with Skwisgaar's father issues. Nathan sometimes acts in a parental manner towards Toki, and in the first episode insisted that the band never drinks before a show (though they had all been drinking all day.)  In the episode "Fatherklok", it was revealed that Nathan enjoys an excellent relationship with his father. He does, however find his parents embarrassing as they are normal parents and not "brutal" as seen in "Dethfam". A brief montage shows Nathan and his father fishing, racing go-karts, and playing Scrabble. He is the only member of the band who spends time with or likes his father, stating in the episode "Dethdad" he often drinks beer and goes hunting with his father regularly and would be very sad if his father died.  Small described Nathan as a "quarterback", and based his character's appearance and performance style on Cannibal Corpse vocalist George "Corpsegrinder" Fisher.
Dethklok