A one-man industrial deathgrind project, MySilentGod released Mundo Herege in 2019 — an 18-track assault of mechanized brutality with anti-religious Portuguese-language lyrics spanning tracks like Jesus Ateu and Demônio. The project fuses the abrasive density of grindcore with industrial texture, occupying a confrontational niche in the broader extreme metal underground.

One of the longer-running acts in the Brazilian underground black metal scene, Mysteriis formed in 1998 and debuted with About the Christian Despair (1999) before resurfacing with Hellsurrection in 2012 via Heavy Metal Rock Records. Their blasphemous anti-Christian venom and raw production align them with the second-wave tradition, and they have maintained a fiercely independent, uncompromising approach across decades of activity.

Mystic Ethan emerged from a series of name changes — operating as Satan Church and then Mistic before settling on the current alias around 2021 — and pursues a misanthropic, anti-Christian style of raw black metal. The project is entirely independent and keeps a low profile, releasing material through Bandcamp without label support.

Rooted in over two decades of history — the band previously operated as Awake from 2000 to 2014 — Mystic Horizon signed to MS Metal Records and released Endless Nightmare as their flagship progressive metal statement. Their sound pursues the technically intricate, melodically rich side of the genre, placing them alongside the broader southern Brazilian progressive metal community.

Mystic Shadows released their debut CDr ...Over Old Hills in 2004, an eight-track record drawing on paganism, Norse mythology, and epic black metal traditions with a lineup of Myth, Arntor, and Falcon. Tracks like Into the Mist and Pagan Memories showcase the band's atmospheric ambition and folk-leaning sensibility, blending keyboard-driven grandeur with raw black metal aggression.

Mystical Fullmoon were a pagan black metal act whose output included the 1999 promo tape and the albums Beyond Somber Passages and Hermits Amidst the Marvels of Darkness, weaving occult and satanic themes into a raw, mid-paced black metal framework. The band drew on the South American underground tradition while incorporating the ceremonial atmosphere typical of European pagan black metal of the late nineties.

Mystical Vision play straight-ahead thrash metal rooted firmly in the old-school tradition, with their 2016 album Alchemy of Chaos showcasing tight, aggressive riffing driven by guitarists Carlos Mota and Silas Pimenta alongside the vocals and bass of Marcelo Sanches. A later release, A First Vision of Hell, continued the band's commitment to classic thrash sounds produced at GHM Studios in Manaus.

Formed in Salvador, Bahia, Brazil in 1989, Mystifier are one of the foundational acts of the Brazilian black metal underground. Their debut full-length Wicca (1992) and its follow-up Göetia (1993) established a ferocious and malignant sound steeped in occultism and anti-Christian themes, earning them widespread recognition in the international underground. After an eighteen-year gap between studio albums, Protogoni Mavri Magiki Dynasteia (2019) on Season of Mist marked a powerful return.

Formed in Salvador, Bahia in 1989 by Beelzeebubth, Lucifuge Rofocale, Behemoth, and Meugninousouan, Mystifier are one of the foundational names in the Brazilian extreme underground, blending primitive black metal brutality with a dark, ceremonial atmosphere and restrained synth use. Their run of records — Wicca (1992), Göetia (1993), The World Is So Good That Who Made It Does Not Live Here (1996), and Profanus (2001) — established them as the most significant black metal band from the northeast of the country.