Macacos da Manchúria is a death/doom metal project from São José dos Campos, São Paulo, Brazil, formed in 2021 by brothers Alexandre Paloschi (vocals, guitars, drum programming) and Henrique Paloschi (bass, guitars). The band's name is a tribute to victims of Unit 731, and their debut full-length "Bessa" (2022) — recorded, mixed, and mastered entirely by Alexandre Paloschi — was composed and produced in a home studio between August and December 2021.

A ritualistic project fusing black metal ferocity with the suffocating weight of doom, Malaise Shire conjures dense atmospheres rooted in darkness and despair. Their 2022 release "Painful Ritual of Despair" showcases a brooding blend of tortured riffs and ceremonial dread, recorded entirely in Paraíba.

Mar de Grises was formed in Santiago, Chile in 2000, developing a death/doom sound that incorporated post-rock, ambient, and progressive elements into their dense compositional framework. Their debut The Tatterdemalion Express (2004) established them as a significant voice in South American doom, followed by Draining the Waterheart (2008) and Streams Inwards (2010), the latter named the top doom metal album of 2010 by Metal Storm's user base. The band dissolved in 2013 but announced a reunion in 2024, their catalog standing as one of the most ambitious in Latin American extreme metal.

Formed in Barbacena, Minas Gerais in 2005 by bassist Delmario Lauriano and guitarist/vocalist Rodrigo Costa, Marmorium Crucis blended gothic doom with deathrock and psychedelic textures, drawing lyrical themes from regional folklore — sanatoriums, cemeteries, and misty streets. Their 2011 demo Le chemin de croix des ames collects nine originals alongside a cover of the Rolling Stones' "Gimme Shelter", capturing the band's phantasmagoric aesthetic before their eventual dissolution.

Mass of Souls combine black metal bleakness with gothic doom atmosphere, drawing clear influence from Candlemass — their self-titled demo even included a cover of the Swedish legends' "Solitude." The project surfaced in 2019 with the single Tales of a Rebel Soul, establishing a sound that sits at the darker, more sepulchral end of the doom spectrum.

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.

Monje is a stoner/doom metal band from Buenos Aires, active since 2016, featuring guitarist Diego Petullo, vocalist Matias Ibañez, bassist Lucas Scardamaglia, and drummer Diego Hernandez. The band has released three studio albums — Monje (2018), Druga Dimenzija (2020), and Culto al Fin de los Tiempos (2023) — alongside a live album, Igual de Macabro: Live Bunker (2022). Their later work incorporates dissonant harmonies, blast beats, and black and death metal influences alongside the core doom sound.

Moonmath is a gothic/doom metal band from the interior of Rio Grande do Sul whose sound is heavy, melancholic, and psychologically dense, drawing on nihilism and introspection as core lyrical pillars. They have self-released two six-track albums — The Whisper's Hand (2017) and Isolated (released across 2018–2021) — both recorded locally and independently.

Morbydia drew from the European gothic doom tradition — think Paradise Lost and early Tristania — blending mournful female vocals with heavy, melody-driven riffs and keyboard atmospherics. The band released the album "Saturnia" and earlier recorded "Requiem To The Sun" through Avernus Records, building a small but devoted following in the Brazilian underground before splitting up.