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.

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.

Astaria is a traditional heavy metal band from the greater Porto Alegre area of Rio Grande do Sul, formed in 2019 across the neighboring cities of Cachoeirinha and Porto Alegre. The band draws from the classic heavy metal canon in the vein of bands that shaped the strong gaúcho metal scene, with clean vocals and melody at the forefront of their approach.

A Brazilian thrash and heavy metal band formed in 2012, with limited documentation outside of the Metal Archives listing. Their sound sits within the tradition of direct, riff-driven Brazilian heavy and thrash metal, carrying on the style that defined the country's underground metal circuit through the 1980s and 1990s.

Atila is a heavy metal band from Posadas, Misiones, Argentina, considered one of the pioneering metal acts of the province. The band — built around vocalist Sergio Toledo, guitarist Javier Duarte, and bassist Cristian Guaglianone — released their debut album Azote de Dios in 2017, followed by a second record, Mal Negocio, blending classic heavy metal with updated material spanning two decades of the band's history.

Avenger is a traditional heavy metal band from São Paulo, Brazil, active since 1998. Rooted in the classic British and American heavy metal tradition — with clear debts to Judas Priest, Black Sabbath, and Motörhead — the band plays no-frills steel with a São Paulo underground sensibility, maintaining an active presence in the Brazilian metal circuit across multiple decades.

Azor is a heavy metal band from Ameghino, Buenos Aires Province, Argentina, formed in 2015. The band has contributed to regional metal compilations including "Awqatinku - Volumen 3", a collection documenting underground metal acts from across Argentina.