Originally active as Megatério from 1986 to 1990, the band reunited in 2006 when all original members crossed paths again at a Slayer concert in São Paulo. Their self-titled comeback album, released in 2008, was recorded at Papiris Studio using compositions written back in 1987, preserving the raw late-eighties thrash aggression that had defined the group's original run.

Melabstra, short for Melodía Abstracta, is a metal band from Medellín, Colombia, active since 2012. The band has built a catalogue spanning multiple releases including the debut EP Abstracción religiosa dualidad imparcial (2012), the full-length El fruto de la discordia (2020), and the album Egocentrismo (2024), with lyrics exploring themes of religion, death, and conflict.

Melanthropy emerged from Curitiba's underground with their debut album "Happiness Remains Shattered" (February 2023), a DSBM record written by multi-instrumentalist Lucas 'Raaski' Rafalski and vocalist Gabriel Henrique that maps the interior landscape of hopelessness through slow-burning, oppressive black metal. The project sits comfortably within the tradition of atmospheric DSBM without straying far from stripped-down, emotionally suffocating song structures.

Melencolia I is a one-man project by guitarist and multi-instrumentalist João P. Amorim Xavier, weaving together atmospheric black metal, doom, shoegaze, and progressive metal into a dense philosophical framework that the artist describes as exploring the depths of human existence through poetic themes. The project released the EP "Introspective Violence" in early 2026, following the earlier full-length "Hermitage."

Melencoliam formed in Uberlândia in 1999 and released the cassette demo "O Infinito Vale da Escuridão" (2001), a recording whose lyrics drew heavily from Dante's Inferno and Milton's Paradise Lost as conceptual touchstones for Satanic black metal. Their full-length "Areloc, O Reino Do Demônio" followed in 2003, cementing a sound rooted in the rawer traditions of the Brazilian black metal underground.

Founded in January 2021 by vocalist and guitarist Melissa Ângela — known for her work with Dirty Grave and Mães Morrendo — alongside guitarist Pedro Barros and a rhythm section spanning multiple cities, Melissa plays slow, heavy doom metal drenched in dark psychedelic tones. Their debut "Devil's Mask" (May 2021) drew obvious nods to Black Sabbath, Pentagram, and Saint Vitus while carving out a moodier, occult-tinged atmosphere, with "Lost in Space" arriving in 2024 to expand the band's catalog.

Active since 1997 in São Paulo's periphery, Melody Monster play a grinding crossover style that fuses hardcore punk, thrash, and traces of grindcore into short, blunt songs concerned with politics, social conditions, and personal struggle. Their discography spans a self-titled debut (1998), "Mundo Perfeito" (2000), and "Desordem" (2004), with the band eventually landing on the Kaskadura label.

Melofrenia was a short-lived melodic death metal project from Buenos Aires whose name fused the words for melody and schizophrenia. They released a self-titled EP and the full-length "Obra Insana" in October 2022 before splitting up.

Melomaniak is a heavy metal and hard rock band from Santiago, Chile whose lineup includes Claudio Melo, Guillermo Ananias, Fernando Forttes, and Nicolás Rosales. The band performs entirely in Spanish and has released two albums: Comprando Horror (2017) and El Adversario (2019).