MTV Brasil and Hermes & Renato produced a short, 10-minute mockumentary showcasing the band's fictional backstory in 2005 to promote the release of their then-upcoming debut Gates of Metal Fried Chicken of Death.

[4][5] Massacration's origins trace back to 1979 (in a nod to the same year when Spinal Tap was formed) in the United States, when petty criminal and talented guitarist John "Blondie" Hammett (played by Fausto Fanti), after being arrested for the sixth time, became cellmates with quail smuggler and castrato singer David "Detonator" Sutter (played by Bruno Sutter); united by their mutual tastes on rock and heavy metal music, they soon developed a very strong friendship.

Having renounced crime following their release from prison, the duo got acquainted with up-and-coming tambourine player Donald Polai (played by Lecuk Ishida, a producer for MTV at the time who occasionally made one-time appearances for Hermes & Renato's sketches) and they decided to form a band, Death Mania; the trio performed their first gig at a bar south of Phoenix, Arizona, but Death Mania only lasted for a day as Polai soon after committed suicide, apparently influenced by the group's "ominous" name.

Touched by their situation, the restaurant's owner, Italian Brazilian immigrant Crézio, intervened and conceded them a rent-free room at his house where they could live and rehearse until recovering their spirits, and so they overcame their depression and lost all the extra weight they had gained.

Shortly after their very first show, Massacration was approached by world-renowned record producer Dick Dornelle (played by then-Hermes & Renato member Gil Brother), who had previously worked with bands and artists such as Queen, Iron Maiden and Michael Jackson.

Following a racist joke made by a heavily intoxicated Detonator during a benefit concert in Somalia, the remaining members of Massacration expelled him from the band and returned to their former jobs at Crézio's restaurant, effectively ending the group's activities.

In 2007 the group began work on a follow-up album, Good Blood Headbanguers,[16] but after a series of delays it was only released on October 10, 2009 through EMI;[17][18][19][20] its cover art was officially unveiled to the public three days prior, alongside an outtake from Gates of Metal Fried Chicken of Death, "Anal Weapon War".

[40][41] Also in 2017, in-character as Detonator, Bruno Sutter was a guest vocalist on the single "Metal for Demons" by Florianópolis-based one-man band Xakol; the song was described by frontman Saulo Castilho as a tribute to Massacration.