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).

An all-female heavy metal band whose lineup includes vocalist Verônica Voxx, guitarists Fernanda Schenker and Helena Accioly, bassist Drika Martins, and drummer Roberta Tesch. They debuted with the EP Catch Me If You Can in 2014 before releasing their full-length Saving You From Reality in 2018, a conceptually driven album rooted in classic heavy metal with bursts of symphonic texture and Voxx's commanding vocal presence at the center.

Memoria Hostil is a heavy/thrash metal band from Pablo Nogués in the northern suburbs of Greater Buenos Aires, formed in 2018 with a lineup of Sergio Soto on vocals, Ivan and Alfredo Sturla on guitars, Leo Sturla on bass, and Pablo Mansilla on drums. The band released their debut album "Memoria 1" in August 2022, a six-track record featuring songs including "Mirando Al Sur" and "Mano Propia".

Founded by Gustavo Campos and Dudu Del Bem, Menacer plays heavy metal informed by thrash, progressive rock, and classical music, resulting in a technically energetic sound built around direct, listener-focused riffs. The band debuted with the EP Rise Up The Menace in 2006, went on hiatus, and returned in 2012 with vocalist John Rodrigues adopting a heavier edge while preserving the original character of the project.

Mental Disorder is a death metal and grindcore band from Temuco, in Chile's Araucanía region, built around original members Jorge Kayser (vocals/guitar), René López (guitar), and Jorge Ortiz (drums), with Mig Martiz on bass. The band originally formed in 2009 and disbanded in 2013 before regrouping in 2018; their themes address mental illness, society, and violence.

Mental Distortion is a Buenos Aires death metal band that began performing as No Class at the iconic Cemento venue before adopting their current name. They released their debut album "Mentally Distorted" in 1997 on Sopa Fria Discos, and later added the EPs "Death Is Your Fate" and "Faces of Death" to their catalog.