Balisttica is a heavy metal band from Belo Horizonte, Minas Gerais, a city with a deep metal tradition that produced foundational Brazilian acts like Sepultura and Holocausto. Formed in 2025, the band is an early-stage act with minimal documented releases, playing traditional heavy metal within a scene that has long been one of Brazil's most fertile for the genre.

Balmung is a heavy metal band from Puerto Montt, Los Lagos, founded by members including Héctor Einherjer (ex-Estigma) and Adolfo Wagner, blending power metal energy with neoclassical technique. The band released their debut five-track EP Mors Crucis in December 2023 through the independent label Infernal South Production, showcasing tightly executed classic-style heavy metal. As of 2025 they were in the mixing phase of their debut full-length album.

Banda de la Muerte is a stoner/heavy metal quartet from El Palomar, Buenos Aires, formed in 2009 and drawing on the heavy riff traditions of Black Sabbath, Melvins, and Black Flag. The band released the album "Pulso de una Mente Maldita" and the Argentine rock covers collection "Seis Canciones" (2013), and have taken their live show to Europe including dates in the Netherlands, UK, Germany, Switzerland, and Belgium.

Barbaria are a heavy metal band from Mogi Mirim, a city in the interior of São Paulo state, formed in 2025 and among the newest entries in Brazil's sprawling regional metal underground. With lyrical themes centered on piracy and adventure, the band plays traditional heavy metal and is in the early stages of establishing their presence in the São Paulo interior scene.

Barbarie is a heavy metal band from Berazategui, Buenos Aires, Argentina. The band has released two full-lengths: "Batallas de Liberación" (2013), a nine-track album drawing on Argentine history and featuring guest appearances from notable figures in the local heavy metal scene, and "Hacia un Nuevo Horizonte" (2017).

Bardoma is a Buenos Aires heavy metal band built around guitarist Eduardo Tobio and vocalist Sabrina Gorosito, with Facundo Alvarado on drums and Matías Lopresti on bass. The band released a self-titled debut in 2024 and followed it with the more metal-focused "En La Zona Letal" in 2026, presenting the new album live at Club V in March of that year.

Battalion is a traditional heavy metal band from Itajaí, Santa Catarina, with roots going back to 2005. The trio — built around vocalist/guitarist Marcelo and drummer Fabiano — has released two studio albums, Empire of Dead (2013) and Bleeding Till Death (2020), working in the straightforward riff-driven style of classic heavy metal.

Beliar are a heavy metal band from Rosario, Santa Fe, Argentina, active since 2009 and catalogued on the Encyclopaedia Metallum. The band has built up a body of recorded work in the Argentine independent metal scene, and their music is available on Bandcamp and other streaming platforms.

Belonger is a heavy metal band from Santos, São Paulo, Brazil, formed in 2016 by members Mauro Duarte, Jonas D. Rocha, and Carlos Fleury. The band draws on classic 1980s heavy metal and hard rock influences, including Iron Maiden, and released their debut EP "Crash & Burn" in 2019 followed by a self-titled full-length album in 2023. Their sound blends old-school heavy metal sensibilities with Christian-themed lyrical content.