Bagual is a stoner metal and heavy psych band from Santiago, Chile, comprising Francisco "Greengo" Yañez (guitars and vocals), Felipe Machuca (guitars), Julián "Lobo" Inostroza (bass), and Alejandro Clavijo (drums). The band debuted with I: Viento Sur (2014) and followed with II: Viento Norte (2015), both recorded independently in Chile, and have continued releasing music through Nulla (2017) and Inhvmar (2024).

Baixo Calão is a grindcore band from Belém, Pará, operating out of the Amazon region and representing one of the more distinctive voices in Brazil's northern underground extreme metal scene. Their sound is rooted in old-school grindcore — relentless blasts, caustic riffs — with lyrical themes targeting anti-religion, social decay, and political corruption. The band gained notable exposure through the European underground circuit, including a performance at the Obscene Extreme Festival in the Czech Republic.

Bajo el Exilio is a five-piece metalcore and hardcore band from Santiago, Chile, who have been active since around 2009–2010 and built a catalog spanning heavy studio albums and live recordings. Their releases include the EP Tras las Cadenas (2010), the full-length Nuestros Verdugos (2013), Resistance (2016), and Contraluz (2023), with the sprawling live-and-studio hybrid Entre Sombras y Ruido following in 2025. All production on Contraluz was handled in-house by guitarist Darío Llancamán, reflecting the band's self-sufficient approach to their craft.

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.

Ban Lesage is a Buenos Aires band formed in 2012 that began in metalcore before moving toward black metal in later years. Their 2015 release "Revolt" — a six-track record featuring songs such as "Anima," "Words Hurt," and the title track — captures the transitional edge between their heavier, more abrasive later sound and their earlier roots.

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.

Bandanos were a thrash/crossover band from São Paulo who emerged from the city's hardcore punk veteran pool with a mission to revive the raw energy of bands like D.R.I., Suicidal Tendencies, and Excel. Over their active years they released multiple albums — including "Nobody Brings My Coffin Until I Die" (2014) and several splits — and mounted an extensive European tour in 2009 spanning 28 shows across 11 countries. They split up in the 2010s after building a loyal following in the underground crossover circuit.

Banni Conflict is a grindcore band from São Paulo that has been grinding since the mid-2000s with a discography spanning demos, splits, and EPs. Their 2015 EP "Cidadão Comun" is among their more notable releases, and the band appeared on international grindcore compilations including a 2014 tribute to Belgian grind legends Agathocles. The current lineup of Jander (vocals), Paulo PH (guitar), Fábio (bass), and Will (drums) continues to carry the São Paulo grind tradition.