Artilharia was a thrash/death metal band from Jaguariúna, São Paulo, with earlier roots in the band Hellhunter before a name change. Playing aggressive, garage-style extreme metal with Portuguese-language lyrics in a style reminiscent of 1980s Brazilian thrash, they released the demo Assassinos do Abismo before splitting up.

Artless was a thrash metal band from Petrópolis, Rio de Janeiro, active in the early 2000s before splitting up. Based in the mountain city roughly 70 km from Rio de Janeiro, the band operated within Brazil's underground thrash scene during a period when the genre was experiencing a renewed wave of activity in the country.

Arya Aryanna was a one-person extreme metal project from Buenos Aires that drew on slamming brutal deathgrind and breakcore, releasing albums including Anhedonia and Grotesque before going inactive. The project worked across an unusually wide sonic range, blending blackened death metal with electronic and industrial textures in a self-produced setting.

Aryan Wood was a São Paulo project operating at the intersection of raw black metal and harsh noise, active from 1996 and associated with the Brazilian underground extreme scene. The project released material through War Kommand Productions and explored themes drawn from nature and paganism alongside abrasive, lo-fi noise aesthetics, placing it among the more experimental fringes of Brazil's black metal underground.

As Darkness Fell is a melodic black/doom metal band from Buenos Aires that has been active since 2000, releasing the album Below the Fog in 2015 on Misanthropic Spirit Records. The record was driven by Hernan Figueredo on guitars, bass, and keyboards alongside vocalist Matias Herrera, crafting a cold, melancholic sound rooted in the Northern European black metal tradition.

As Dramatic Homage is a Rio de Janeiro project founded in 2001 by guitarist Alexandre Carreiro and vocalist Alexandre Pontes, beginning with black and doom metal before evolving toward extreme progressive metal. Their early catalog includes releases from 2001 such as "The Lover's Funeral" and "Incandescent Sun," with the 2012 track "Monumental" reflecting their later experimental direction. The name signals their central preoccupation: exploring antagonistic human behavior, philosophy, and existentialist themes through atmospheric, shifting compositions.

As I Die is a one-man depressive black metal project from Ribeirão Pires, São Paulo, formed in 2022. Operating in the tradition of DSBM, the project has released several full-lengths through Bandcamp, including "Tudo Que Ofereço É a Destruição," "The Endless Suffering of a Hopeless Soul," and "The Loneliness Embraced Me," all marked by raw production and bleak, introspective themes.

Ascendente is a death and groove metal band from São Paulo, formed in 2014 and active in the city's dense underground metal circuit. Blending the rhythmic punch of groove metal with the heavier extremity of death metal, the band belongs to a tradition of São Paulo acts that draw on both American groove and the brutality of classic Brazilian extreme metal.

Ascoculto is a death metal and grindcore band from Viña del Mar, Chile, who recorded and released their debut album "El Comegente" in 2007 on Niño Abuelo Records, tracked at Estudios Cero DB. They subsequently appeared on the 2009 split "Brutal Anal Devastation" alongside Chilean acts Visceral, Vomitos y Reflujos, and Triquinosis.