Annihilation is an old-school death metal band from Osasco, São Paulo, fronted by the vocalist known as Vomit Blasphemy Tormentor. The band deals in raw, aggressive death metal in the tradition of Brazil's extreme metal underground, and released the album "Evil Churches" in 2024.

Anomalia were a metal band from Tigre, Buenos Aires who started out playing thrash and death metal before shifting toward metalcore over the course of their career. The band released two albums — Mea Culpa (2012) and Una Vida en el Infierno (2015) — with the latter marking a move to all-Spanish lyrics and a cleaner, more melodic approach. The lineup at their most active featured vocalist Ramiro Arias, guitarist David Lapalucci, bassist Ariel Olarte, and drummer Javier Cuello.

Anomalistic is a two-piece slam and brutal death metal band from São Paulo, Brazil, consisting of vocalist Fabio K and guitarist João Holzer. Their sound centers on crushing slam breakdowns interwoven with elements of technical and melodic death metal, and their discography includes the albums "Butchery" (2013), "Dissecting the Living" (2014), "Human Decimation," and "Azoic" (2020).

Anopheles is a death metal band from Rio de Janeiro with roots going back to the mid-1990s Brazilian extreme metal scene. The band recorded their foundational release "Abstention of Life" in May 1995 at Estúdio Manhatan in Rio de Janeiro, an album that has since circulated among collectors of rare Brazilian demo recordings. Their lyrical themes deal with agony, suffering, and the darker dimensions of humanity.

Anorak is a raw black metal band from Rio de Janeiro, Brazil, active since the late 2000s and signed to Holokaostor Productions. The band operates firmly in the lo-fi, primitive black metal tradition, with lyrical themes centered on Satanism, anti-Christianity, and blasphemy.

Anorkia was a death metal band from Curitiba, Paraná, Brazil, active in the early 2000s before splitting up. The band operated as an independent act within Brazil's underground death metal scene, releasing a self-produced demo in the mid-2000s with lyrical themes grounded in realism.

Ansata was a progressive metal band from Piracicaba, São Paulo, whose name is the Latin word for the ankh symbol. The band released their debut album "Crux Ansata" in 2008, a concept record steeped in ancient Egyptian mythology and middle-eastern musical influences, woven through technical guitar work and prominent keyboards. The lineup included vocalist Malagueta, guitarist Rafael Romani, keyboardist Thomas Barcelos, and drummer Thiago Siqueira.

A death/thrash metal band from Rio de Janeiro with roots stretching back to the mid-1980s underground scene, founded by guitarist Alberto "Urubu" Lemos. The band built a reputation through raw demo recordings and aggressive live performances before releasing their 1997 album "Fate" on Kaos Records, which drew attention from the worldwide underground circuit. Their sound draws on the hard-edged Brazilian thrash tradition, with lyrical themes centered on war, societal collapse, and political decay.

A Brazilian Viking metal solo project by multi-instrumentalist Witmar, who handles all instruments and vocals. The project draws on Norse mythology and pagan themes — including song titles in Old Norse — while operating from South America, a rare combination that situates it within Brazil's small but dedicated Viking metal underground. Earlier releases came out through Metalage Productions and White Metal Art Producciones.