A one-man brutal death metal project by Nostra Cantus built entirely around feline themes, pushing the genre's absurdist edge with releases like Cowgato From Mars, The Paw is the Law, Gato com Facão, and Cangato From Outer Space. The project pairs unrelenting blast beats and guttural vocals with a consistently deadpan cat-themed concept, and has also collaborated with Doggy Style on the split The War on All Fours.

A Brazilian atmospheric and depressive black metal project that released its debut EP The Philosophy of Death in July 2024, a four-track, roughly thirteen-minute statement combining raw black metal with ambient textures and unexpected melodic passages that drift into near-Oriental tonalities. Norwegian-language track titles and an overarching fixation on darkness and existential despair place the project squarely within the DSBM tradition while hinting at a broader sonic ambition for future releases.

Mephistofeles is a stoner/doom metal trio from Paraná, Entre Ríos, formed in 2013 by guitarist and vocalist Gabriel Ravera alongside bassist Magic Fingers and drummer Ivan Sacharczuk. The band debuted with "Whore" in 2016 and released their fourth studio album, "Violent Theatre", on October 7, 2022 through Helter Skelter Productions, with international distribution on Regain Records.

Rooted in the South American underground, Mephistopheles play a morbid amalgam of doom, death, and black metal drawing from the same unholy lineage as Mystifier, Sarcófago, and Blasphemy. Their two early demo tapes — 'The Prophecy' and 'Black God' — were later compiled and released on CD by Voz da Morte Prod in 2018 as 'The Prophecy of Black God,' preserving eleven tracks of raw, English-language ritual extremity.

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.