Arkhôn Tôn Daimoniôn is a black metal band from Salvador, Bahia, Brazil, founded in 1995 by vocalist Duxgor and guitarist Grim Abra-Melim Offilatrus, making them one of the longer-running underground black metal acts out of Brazil's northeast. Rooted in explicitly Satanic and blasphemous themes, they released the demo Sacrum Ex Operam Dare in 1998 and Visions of the Apocalypse in 1999, both circulated in the tape-trading underground. The band debuted live at the Occult Ritual of Fire Festival in December 1996 and has continued performing into the 2020s.

Armoured Knight is a heavy/speed metal band from Peñaflor, Chile, active since 2012, whose lineup has centered on guitarist Cristian León alongside vocalist José Tapia and bassist Christopher Falk. They built their catalog across three EPs — "Prophecy of Tomorrow" (2013), "Ashes of Glory" (2017), and "The Sacred Flame" (2020) — before releasing their debut full-length "The Quest for the Sacred Melody" in October 2025 through German label Dying Victims Productions.

Aroma de Saturno is a doom, sludge, and stoner metal band from Blumenau, Santa Catarina, Brazil, formed in 2018. They occupy the slower, heavier end of the Brazilian metal underground, releasing their self-titled EP and the track Ponto Sem Retorno through Bandcamp. Blumenau's German-immigrant heritage and industrial past give the city an unusual cultural backdrop for the kind of heavy, atmospheric metal Aroma de Saturno pursues.

Arrastado is a stoner and doom metal project from Brasília, Brazil, formed in 2018 and built around home recordings under the name that translates roughly to "dragged" in Portuguese — apt for the slow, crushing tempos the band favors. Their releases include the album Isso Também Será Esquecido (This Too Shall Be Forgotten) and Hinos do Esquecimento, both available on Bandcamp and consistent with the heavy, fuzz-driven doom aesthetic. The project's DIY approach and introspective Portuguese titles reflect the broader character of Brazil's independent stoner-doom underground.

Ars Moriendi is a Brazilian raw black metal project formed in 2018, operating within the underground tradition of lo-fi, abrasive black metal with themes centered on death and darkness. With minimal production and a stripped-back approach typical of the raw black metal ethos, the band channels the primitive intensity that has defined the Brazilian extreme metal underground.

Ars Tenebrae is a death/black metal band from Pouso Alegre, Minas Gerais, formed in 2019, playing anti-Christian extreme metal rooted in Satanic and misanthropic themes. The band operates as an independent underground act, combining the ferocity of Brazilian death metal with the cold savagery of black metal in the tradition of Minas Gerais extreme music.

Arsênio is a thrash metal band from Foz do Iguaçu, Paraná, formed in 2012 in the tri-border city where Brazil meets Argentina and Paraguay. The band carries the aggressive, old-school thrash tradition of the Brazilian underground.

Art of Khaos was a progressive power metal band from Brasília, Distrito Federal, active until around 2020. Their 2018 album Monster Inside drew comparisons to Symphony X and Lamb of God, blending technical guitar work and heavy riffing with the melodic songwriting of progressive power metal.

Art of Torture is a brutal death/grind band from João Pessoa, Paraíba, playing gore-laden extreme metal in the vein of the Brazilian brutal death underground. Their 2015 album Impulse to Mutilation, recorded across studios in João Pessoa with David Nunes on vocals and André Toledo on guitars, delivers relentless blasting brutality across eleven tracks.