Formed by guitarist and vocalist Jean Nightbreaker, Murdeath delivered tightly wound thrash and speed metal with a NWOBHM edge across releases like the 2014 EP "Apocalipse Sangrento" and the 2016 full-length "Sob o Signo...". The Curitiba outfit announced a hiatus in late 2022 following a final show with Skull Fist in early 2023.

Murder Worship plays uncompromising death metal rooted in violence, anti-Christian themes, and a relentless appetite for brutality. Their catalogue includes the 2013 debut "Hate Celebration", the 2020 EP "Bleeding the Coward", and the 2021 full-length "Doomsday", the latter reissued in 2024 with live bonus tracks from Festival Marreco.

Formed by guitarist Jazz Kaipora and vocalist Claudia Franco, Murderess weave together death, black, and doom metal with lyrics centered on female resistance and historical figures erased by official narratives — including a track dedicated to Soviet WWII sniper Lyudmila Pavlichenko. The band released the EP "Time to Kill" in 2024 and followed it with "Time to Kill: Volume II" via Electric Funeral Records, quickly earning attention beyond the Brasília underground.

Murdock deal in slow, heavy riffs steeped in a 1970s Black Sabbath–rooted stoner doom tradition, with a psychedelic edge that the band describes as exploring dark earth rather than outer space. Their 2021 EP "Entre Tigres e Lobos" showcases the quartet's knack for mood-saturated songwriting, and the track "Olhos Sinistros" — a lo-fi, crushing meditation on a bloodthirsty mythical creature — has become a fan favourite.

A supergroup side project drawing members from Sepultura, Threat, and Nitrominds, Musica Diablo united Sepultura frontman Derrick Green with guitarists André NM and André Curci for a pure old-school crossover thrash assault. Their self-titled debut from 2010 packs eleven tracks of raw, São Paulo–forged aggression, produced by Rafael Ramos; the band dissolved the following year after Green refocused on Sepultura.

Mustaphorius play the kind of no-frills crossover thrash that worships at the altar of hardcore punk and late-1980s speed metal, with an irreverent streak that runs through their track titles and stagecraft. The band put out the EP "Bebidas e Mosh" in 2015 and returned in 2023 with their full-length "Homem Horrível", cementing their place in Curitiba's underground extreme scene.

Mutilagia is a five-piece slamming brutal death metal band from southern Argentina whose lineup includes Marcos Corbalan on vocals, Sergio Romero and Ignacio Sanabria on guitars, Nicolás Guaquin on bass, and Angel Levin on drums. Their debut album "Non-Human Atrocities" was recorded at Ataraxia Studio in Río Grande, Tierra del Fuego and released in September 2022, with a follow-up single featuring guest vocalist Matthias Joyce (Rottenness) arriving in 2026.

Mutilated Christ is a Symphonic Black Metal band from Ambato, Tungurahua, Ecuador, founded in June 1994 by guitarist William "Morbo" Mutilator. One of Ecuador's earliest extreme metal acts, the band built an early following with limited-run demos including "Blood of Bastard" (1996), which sold out its initial 66-copy cassette run and was later re-pressed to 500 copies. They remain active and release through Profane Elite, with themes centered on anti-Christianity and satanism.

A two-member war machine built around Aubert Mutilator on vocals and programming and Iscariot Destructor on guitars and bass, Mutilação Anticristã traffics in raw, lo-fi black/death metal with an uncompromising anti-Christian and satanic worldview. The duo released "Metal Negro Anticristo" in 2012 and followed it with the even more abrasive "Noite de Sexo Bestial e Profano" in 2014, both recorded in the Sergipe underground without concession to polish or accessibility.