Mephitic Tomb is a raw death/black metal project steeped in the pestilential South American underground tradition, channeling blasphemous hostility through a sound informed by anti-religious and Cthulhu Mythos themes. Formed in 2024, the project draws on the volatile heritage of the region's extreme metal underground, producing tracks such as 'Cursed by Coffin Joe' and 'Leather, Chains, Hooks, Sex' with uncompromising ferocity.

Mepth is the solo project of Maycon Douglas, a one-person exploration of depressive black metal that bleeds into atmospheric, shoegaze, and sadcore territory. Albums like 'Raízes da Agonia' (2025), 'Grito do Silêncio', and 'Entre ruínas de mármore' chart an inward course through loneliness, despair, and existential horror with densely layered, melancholic arrangements.

Meraxes is a Buenos Aires melodic death metal and metalcore band formed in early 2015 around frontman Lucas "Luke" Borelli, with the current lineup also featuring guitarist Brian "Hardy" Gramajo, drummer Franco Capello, and bassist Diego Ibarra. The band released the EP "The Fallen Embrace the Hate" in February 2018 and followed it with "Goodbye" in January 2020.

Mercilless carry on the raw thrash metal tradition of Leopoldina, Minas Gerais, a region that also spawned Deathraiser. The band channels the aggressive, politically charged spirit of the South American thrash scene, with early material appearing on the Deströyer Zine Compilation Vol. 1 alongside the track 'Lethal Disaster.'

Led by multi-instrumentalist Phillippe Levidad with vocals by Daniel Corpse, Mercy craft progressive black metal shaped by Norwegian acts such as Antestor, Vaakevandring, and Vardøger. Their discography includes the debut full-length 'The Seven Signs' (2013) and the follow-up 'The Powers That Be,' both marked by lyrical themes spanning Christianity, nature, and Norse mythology.

Formed in 1988 in Salvador, Mercy Killing are stalwarts of the Brazilian thrash underground with a sound hardened by Kreator, Dark Angel, and Ratos de Porão. After cassette demos including 'Toxic Death' (1993) and 'Living in My Madness' (1995), the band returned with the 'The Thrasher!' demo (2013) and their crowdfunded debut album 'Euthanasia' (2015), a sixteen-track barrage of violent, anti-fascist thrash.

Mercy Shot blend heavy and groove metal with hard rock influences into a muscular, hook-driven sound. Their 2022 album 'Brace for Impact!' showcases the band's range across ten tracks — from the churning 'Sink and Thrive' to the anthemic 'Massive Heart' — cementing their place in São Paulo's modern heavy rock scene.

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.