Mistetaret fuses raw black metal with expansive ambient passages, conjuring a sound that evokes vast nocturnal spaces and cosmic isolation. The project debuted in 2023 with the eleven-track album Mysteries of Stellar Nights Lost in the Infinite Void, establishing an ambitious aesthetic that blurs the line between harsh metallic fury and contemplative soundscapes.

Mistreated channels the classic 80s heavy metal and hard rock sounds of Iron Maiden, Judas Priest, and Black Sabbath through a modern lens, built around the chemistry between vocalist Henrique Radünz and guitarist Emanuel Murialdo. The band recorded their debut album Brand New Rust (2021) entirely independently at Load Studio Audio and Video in Pelotas, funding the sessions through cover show performances.

Mistwrath is a Satanic black metal act from Rio Grande do Sul operating in the raw underground tradition. The band formed in 2017 and is aligned with the Impure Lust Cult label network that supports Brasil's uncompromising black metal underground.

Mítica is a Progressive/Power Metal project from Quito, Ecuador, formed in 2022 by a collective of established Ecuadorian musicians alongside international guests. The band's stated mission is to preserve and promote Ecuadorian cultural identity by setting the country's principal legends to music in a style they call "Metal Opera Equinoccial." Their 2022 release "El Pacto de Cantuña" adapts the famous Quito colonial legend into a theatrical metal format.

Mitosis is a metal band from Cipolletti, Río Negro, formed in 2005 by members of the defunct Voz Natal, with a core lineup of Kiri Marchan (guitar/vocals), Milton Márquez (guitar), Toto Cufari (bass), and Agustín Barbosa (drums). They released three albums — Un motivo de existencia (2008), La razón del hoy (2011), and Alto en el fuego un imperio sanguíneo (2015, mastered by Mario Breuer) — and shared stages with Sepultura and A.N.I.M.A.L. before the band dissolved in early 2023.

Mitsein is a symphonic metal outfit from Brasília built around the guitar work of Jeff Oliveira and the vocals of Cristienne Graciano. The band draws broadly from power, progressive, and melodic metal and has released singles and EPs since 2020, including a contribution to the Motim Underground compilation with the track "Revenge" in 2021.

Moana is a deathcore band from the interior of São Paulo state delivering heavy, Portuguese-language extreme music. The band released the album "Oceano Paralelo" and has steadily built a catalog since their early 2010s demos, including the track "Cordilheira da Discórdia."

Mochica is a solo pagan black metal project from Lima, Peru, created by the musician Viracocha as a tribute to the ancient Moche civilization of northern Peru. Active since 2002 and released through Pagan Warriors Records, the project blends raw black metal aggression with pre-Columbian Andean themes, with the 2024 demo "Ritual Conqueror" showcasing that indigenous-inspired lyrical focus.

Modorra was an experimental death metal project from Igrejinha, Rio Grande do Sul that pushed the genre into confrontational, noise-adjacent territory. The band released the album "Solar Anus" and a split 12" before splitting up, leaving behind a catalog that sat at the intersection of death metal brutality and avant-garde provocation.