Moretools emerged from the Brasília underground with a self-titled debut that fuses death metal, grindcore, thrash, and hardcore into a relentlessly aggressive whole. The band has shared stages with Krisiun, Onslaught, and Torture Squad, and appeared at major festivals including Porão do Rock.

Morfeus is one of Belém's defining thrash acts, originally founded in 1988 by members of the city's first thrash band Kaliban alongside veterans of Ceifador and Macabro. The band documented their ferocious early attack across the demos "Thrashing Assault" (1988) and "Anachronic Disease" (1990) before releasing their debut album "Disbelieved World" in 1993, and returned to activity after a decade-long hiatus.

Originally founded as Morticínio in 1998, Mortage play a brand of speed and thrash metal that follows the aggressive European template — early Kreator is a clear touchstone — with fast riffing built for relentless headbanging. The band has appeared on international splits, including a vinyl release alongside Californian thrash veterans Hirax.

MortalDread emerged from the same orbit as the earlier Goiás underground project Selbstmord, carrying on a tradition of aggressive, uncompromising thrash metal from the center-west of the country. The band released material independently before splitting up, leaving behind a document of the city's underground metal activity.

Operating out of Rondônia's small but tight-knit metal community, Morte Lenta plays raw, no-frills thrash with roots in Destruction, Slayer, and early Sepultura. The band released a demo in 2016 and has continued building a catalog rooted in the stripped-down, aggressive side of the genre.

One of the oldest extreme metal bands in Paraná, Morthal trace their origins to 1987 and are often cited as the pioneer of the death/thrash style in the state, performing shows as far as Brasília and Asunción in the mid-1990s and releasing a split LP with Tumulto in 1992 that drew national attention in the underground press. After roughly 18 years of inactivity, the band reformed with vocalist Nilton Bobato and guitarist Zepa Costa among its ranks, picking up where their gritty, war-themed death/thrash left off.

Morthifera is a thrash metal band formed in 2010 in González Catán, Greater Buenos Aires, by drummer Cristian Romero along with guitarist Sergio Noriega. The band built their name on socially charged, working-class-rooted thrash, releasing the EP Régimen de Sangre in 2011, the full-length Basurero Humano through Icarus Music in 2016, and the independently released Apócrifo in 2019.

Mortifyzer is a metal band from Santiago, Chile, formed in 2019 and working across thrash, death, and groove metal. They released their debut EP Nuclear Dust in January 2019, their first recorded statement as a band.

Mortuário A.D. channels the raw, bestial energy of early Brazilian extreme metal through a death/thrash lens, citing Sepultura, Sarcófago, Mutilator, Vulcano, Obituary, and Hellhammer as touchstones. Their second release, "Die in Pain," dropped on Halloween 2024 and captures the horror-soaked ferocity the band has built its identity around.