Ankh is a heavy metal band from Porto Alegre, Rio Grande do Sul, one of Brazil's most prolific metal cities. Active since the mid-1990s, the band has gone through several lineup shifts over the years while maintaining a traditional heavy metal approach. Their lone documented studio recording is the 2005 demo "Rest in Peace."

Heavy metal band from Mogi das Cruzes, São Paulo, active since 2013. Their Bandcamp catalog includes the split release "Chalet / Split w/ DEADMEN" alongside other heavy metal material, placing them within the underground heavy metal circuit of greater São Paulo. The band maintains an active presence in the Brazilian independent metal scene.

Apocalipsis is a heavy metal band from Grand Bourg, Buenos Aires, originally formed in 1984 by high-school friends Gustavo Zavala (bass) and "Turco" Atala (guitar), who are widely regarded as direct precursors to Tren Loco. The band released demos including "Endemoniado" (1985) and "Calles de Buenos Aires" (1987), won a notable band contest in March 1986 covered by Argentine magazines Metal and Riff Raff, and eventually reunited — their self-titled album was reissued on vinyl in 2012 by Sade Records in 300 hand-numbered copies.

Apollyon was a heavy metal band from Formosa, Goiás, Brazil, formed in 2017. Operating in the interior of Brazil's central-west region, the band recorded material in the traditional heavy metal vein before splitting up, contributing to the modest but persistent metal activity outside the major urban centers of the country.

Apócrypha is a heavy metal band from Villa Giardino, Córdoba, with roots going back to the mid-1990s and a discography that includes the albums "Cabezas de Metal" (2003), "Convicción Salvaje" (2008), and "A Los Motores Del Metal" (2012). The band operates independently and has maintained an active Bandcamp presence, releasing material and continuing to represent the Córdoba province metal underground. Their sound sits squarely in traditional heavy metal territory with a distinctly Argentine character.

Argos is a heavy metal band from São Paulo, Brazil, founded in 2009 with a lineup anchored by vocalist Fabio LaTorre and dual guitarists Reginaldo Barros and Andre de Sá. The band takes its name from the all-seeing giant of Greek mythology, reflecting their stated intent to draw from multiple metal styles without being confined to a single subgenre. They released the EP In the Name of Tragedy in 2009 and gained airplay on São Paulo's Central Rock Radio (107.1 FM).

Arkanus is a Brazilian heavy metal band formed in 1994 and active since the mid-1990s underground scene. The band built their catalog through a series of self-released demos including Black Out (1999), Six Feet Under (2000), and Mysterious Places (2002), demonstrating a long commitment to independent heavy metal in Brazil. Despite years of activity, they have remained a consistently underground act without major label backing.

Armagedon is a heavy metal band from Florencio Varela, Buenos Aires, formed in 1991 and active across several decades with a catalog of socially charged material. They released their debut self-titled album through independent label Altar Records and followed it with "Ecología" in 1995, also appearing on the 1997 Argentine metal compilation "Nuevos Guerreros" released by Yugular Records.

Asper is a heavy metal band from Porto Alegre, Rio Grande do Sul, active since 2018 in one of Brazil's most established regional metal scenes. Porto Alegre has long been a hub for traditional and extreme metal in southern Brazil, and Asper operates within that tradition as an independent act.