This Belo Horizonte thrash/death metal band took their first stage alongside Chakal and Aamonhammer at the Black Death Festival in 1987, placing them among the earliest acts in the formative Brazilian extreme metal underground. The band later renamed themselves The Mist in 1988 and continued recording and performing under that name through the 1990s before eventually reviving.

Mazemath is a thrash and death metal band from Santiago, Chile, formed in 2015. Their debut album The Illusion of Freedom, released in 2016 and recorded at AudioCustom Studios in Santiago, introduced the band's aggressive approach to politically and cosmically charged lyrical themes including environmental destruction and political corruption.

A death-grind project driven largely by Billy Grind, who handles all instruments and vocals, Megalodon released a self-titled EP in 2018 followed by "Sozinho Contra Todos" in 2022. The project pulls from industrial and electro-grindcore textures while retaining the blasting, short-format brutality expected from the genre.

Formed in Taquara in 1993, Megalon built their sound around the savage intersection of death and thrash metal, channeling science fiction themes through a battery of demos — "Hands of God" (1998) and "Gattaca" (2000) — that drew coverage in national outlets like Rock Brigade magazine. The band was also a driving organizational force behind the local Thrash Attack festival and is documented in the regional rock history documentary "As Pedras do Rio Ligeiro."

Mental Disorder is a death metal and grindcore band from Temuco, in Chile's Araucanía region, built around original members Jorge Kayser (vocals/guitar), René López (guitar), and Jorge Ortiz (drums), with Mig Martiz on bass. The band originally formed in 2009 and disbanded in 2013 before regrouping in 2018; their themes address mental illness, society, and violence.

Mental Distortion is a Buenos Aires death metal band that began performing as No Class at the iconic Cemento venue before adopting their current name. They released their debut album "Mentally Distorted" in 1997 on Sopa Fria Discos, and later added the EPs "Death Is Your Fate" and "Faces of Death" to their catalog.

Meridion is a four-piece death metal band from Santiago, Chile, founded in 2017, whose music blends dark and technical death metal with themes drawn from Andean aboriginal culture, occultism, and colonial history. The band released their debut full-length Rise from the South in 2018 and followed it with the eight-track Caverns (2024) through Mexican underground label Iron, Blood and Death Corporation.

Meridion is a four-piece death metal band from Santiago, Chile, founded in 2017, whose music blends dark and technical death metal with themes drawn from Andean aboriginal culture, occultism, and colonial history. The band released their debut full-length Rise from the South in 2018 and followed it with the eight-track Caverns (2024) through Mexican underground label Iron, Blood and Death Corporation.

Founded by Angelo Torquetto following his departure from Desertor, Messianic Cry fuse death metal brutality with hardcore vocal intensity and a Christian lyrical perspective. Their 2012 debut 'Freedom for Those Who Weep' — released through Silent Music Records — delivers ten tracks that draw equally from thrash, death metal, and hardcore while addressing themes of human struggle and faith.