Mandrake — also known as Heráldica de Mandrake — is a stoner doom trio from La Serena, Chile who began releasing music in 2014 before adopting their extended name in 2017. Their 2019 EP Esto también pasará, released through Doomed and Stoned Records, draws on dissonant, heavily distorted doom paired with occult and anti-authoritarian lyrical themes, with artwork by guitarist and vocalist Francisco Rivera.

A death metal band from the Tapanã neighborhood who announced themselves with a self-titled EP in 2020, Mandíbula deals in themes of horror, chaos, and human brutality with their sound landing firmly in the old-school tradition. Both 'Self Devourment' and 'Hecatombe Vitae,' released in quick succession in 2024, expanded on that foundation with a focus on psychological as well as physical violence.

Founded by drummer Marcelo Kruszynski in the Paraíba Valley, Manger Cadavre? have spent over fifteen years applying crust, grind, and hardcore fury to pointed critiques of systemic failure, logging more than 340 shows across Brazil, South America, and Europe along the way. Their 2021 album 'Decomposição' pushed further into death crust territory, while 'Como Nascem Os Monstros' (2025) continued that evolution with the current lineup of Nata de Lima on vocals, Paulo Alexandre on guitar, and Bruno Henrique on bass.

A thrash metal act from the São Paulo coastline, Maniac Force have been grinding out aggressive, no-frills thrash since 2007 with a consistent focus on anti-religious and violent themes. Their discography spans from the 2008 full-length 'Metal Invasion' through to 'Dead Planet' (2012) and the later releases 'Collective Illusion' and 'Psychological Horror,' both from 2019.

Manifiesto is a thrash and heavy metal band from Morón, Buenos Aires, led by guitarist Cristian González, with a catalogue that spans from their first album Insano (2006) through La Obra Maestra del Odio (2015) to La Ley del Talyon (2024). After nearly a decade between studio records, the band's 2015 comeback album was reviewed across Argentine metal media including Metal-Daze Webzine and Metal Argento, cementing their standing in the local scene.

Part of the Choduus Brotherhood circle of Brazilian black metal, Mankindend began in dark ambient territory before pivoting to raw, Satanism- and chaos-themed black metal with a characteristically harsh and lo-fi aesthetic. The 2024 single 'Eradication,' released through Choduus, represents the project's most recent document of that abrasive later direction.

Manso Jeremías is a death/thrash metal band from Buenos Aires whose sound draws on Swedish death metal forebears such as At the Gates, Dismember, and Entombed. The band — comprising Claudio Filadoro, Martin Furia, Mariano Miranda, and Gabriel Raimondo — has released two records: DOBLEHACHA (2016) and the five-track MARABUNTA.

Manthra was a thrash/death metal band from Antofagasta, Chile, active from 2001 until their split in 2015. During their run they released two promo CD-Rs — El final (2003) and Inquisición (2004) — and later continued under the name Dark Manthra to distinguish themselves from an older Colombian band named Mantra.

Manto Negro is a groove/thrash/metalcore band from Clorinda, Formosa, formed in 2015 with a lineup of Luis Zamprogna (guitar), Ati Démön Fer (vocals), Alexis Torres (drums), and Hernán Garay (bass). The band released the EP Rockopolis Presenta a Manto Negro in 2020 and their full-length Oveja Negra in 2023.