The fourth season of the animated show Metalocalypse originally aired on Adult Swim from April 29, 2012 to July 15, 2012 with 12 episodes. The show follows virtual death metal band Dethklok. This season returned to the original 11-minute long episode format. The season four DVD/Blu-ray was released on October 30, 2012 through Adult Swim/Warner Home Video.

Season 4 Episode 3 - Prankklok

The guys pull pranks and go on vacation to celebrate the release of their album, but Nathan senses that something is not right with their latest release. Meanwhile, Skwisgaar and Toki plot revenge on Murderface for his pranks. Air Date : 13th-May-2012

Season 4 Episode 1 - Fanklok

Nathan begins dating a hardcore Dethklok fan, against the advice of his bandmates. The rest of Dethklok takes up smoking. Air Date : 29th-Apr-2012  Read More

Season 4 Episode 2 - Diversityklok

Accusations of racism are leveled at the band, so they open an urban youth center to improve their image. Elsewhere, Toki starts a club but excludes Murderface. Air Date : 6th-May-2012  Read More

Season 4 Episode 3 - Prankklok

The guys pull pranks and go on vacation to celebrate the release of their album, but Nathan senses that something is not right with their latest release. Meanwhile, Skwisgaar and Toki plot revenge on Murderface for his pranks. Air Date : 13th-May-2012  Read More

Season 4 Episode 4 - Motherklok

Dethklok opens a Dethfair in Tomahawk, Wisconsin; Pickles goes into realty. Air Date : 20th-May-2012  Read More

Season 4 Episode 5 - Bookklok

Toki writes a tell-all book about Skwisgaar and becomes lead guitarist for the band, but the pressure may be more than he can handle. Elsewhere, Nathan buys a defibrillator as a toy. Air Date : 27th-May-2012  Read More

Season 4 Episode 6 - Writersklok

The band’s new female producer sends them on a vacation to help write songs for the new album. The getaway proves anything but relaxing, however, when they end up in a brutal country and are sold into sex slavery. Air Date : 3rd-Jun-2012  Read More

Season 4 Episode 7 - Dethcamp

Toki goes to rock-and-roll camp and is bullied by other campers. But he soon finds an ally in a former Dethklok guitarist. Meanwhile, Skwisgaar and Murderface binge on candy and horror movies while Toki is away. Air Date : 10th-Jun-2012  Read More

Season 4 Episode 8 - Dethvanity

Murderface goes to Mexico for plastic surgery after he receives a dubious award. The rest of the guys, meanwhile, deal with the effects of aging and years of hard living. Air Date : 17th-Jun-2012  Read More

Season 4 Episode 9 - Going Downklok

The guys spend time on a sub without women, and the conditions quickly deteriorate, prompting Pickles and Nathan to compete for the affections of their producer. Air Date : 24th-Jun-2012  Read More

Season 4 Episode 10 - Dethdinner

As Dethklok hosts the most important dinner of their career, the divvying of album credits, over tagging on social networking sites, and fights over a girl come to head. Can CFO keep their issues in check? Will the record executives forgive them for the past year of mistakes? Or will it be a total, brutal disaster? Air Date : 1st-Jul-2012  Read More

Season 4 Episode 11 - Breakup Klok

While the world awaits the final Dethklok performance, members of the band prepare for their post-Dethklok careers. Pickles starts a winery for the most alcoholic wine ever, Nathan and Skwisgaar look for a brand new sound that does not suck, and Toki works with Murderface on his campaign for congressman. Meanwhile, Selatcia takes Dethklok’s weakness as the opportune time to strike! Air Date : 8th-Jul-2012  Read More

Season 4 Episode 12 - Church of the Black Klok

Dethklok is notified of a looming secret that has been around for hundreds of years: the secret of the Metalocalypse. Before they can contemplate what this means, however, Nathan must give a eulogy and do the most brutal thing he has ever done: get in touch with his emotions. Air Date : 15th-Jul-2012  Read More