Briga de Bar — Portuguese for "Bar Fight" — is a thrash metal band from Belém, Pará, Brazil. The band released their recording "Tropa Banger" in 2015 and remain active as an independent act. They are part of Belém's underground metal scene in the Amazon region of northern Brazil.

Briselas is a folk metal band from Temuco, Chile, formed in July 2004 following the dissolution of another Temuco act, with a lineup that incorporates violin, flute, and keyboards alongside electric guitars. Drawing on Celtic folk influences and Chilean and Mapuche mythology, they released ...más Allá del Sol in 2010 and the twelve-track album Tierra de Poetas through Pewmawe Producciones in 2019.

Brisä is a stoner doom metal band from Congonhas, Minas Gerais, Brazil, formed in 2013. The band has built a reputation in the Brazilian underground scene for professional production and well-crafted compositions, performing at events such as the Rising Metal Fest and the 16º Heavy Fest in Conselheiro Lafaiete. Their sound is characterized by heavy, energetic performances rooted in the stoner doom tradition.

Britannia are a heavy metal band from San Francisco, Córdoba, Argentina, built around the Possetto brothers — Javier "Jama" on drums and Sergio "Checho" on bass and vocals — alongside guitarist Ángel "Tato" Grangetto. The band chose their name as a direct tribute to the British bands that inspired them, including Motörhead, Iron Maiden, and Judas Priest, and their sound reflects that NWOBHM-rooted lineage. Their lyrics engage with social and political themes while maintaining an independent, non-partisan stance.

Broken & Burnt is a groove metal band from Serra, Espírito Santo, Brazil, active since 2011. Describing their sound as "heavily distorted music" with influences spanning groove, stoner, thrash, doom, and sludge metal, the band has released several albums including "Let the Burning Begin" (2012), "Stolen" (2013), "It Comes to Life" (2016), and "Another Round" (2019). They are an independent act with a self-described philosophy built on raw energy and aggression.

Broken Dreams was an internet-assembled Argentine deathcore and cybergrind project formed by guitarist and programmer Fernando González from Puerto Deseado and vocalist Andrés Leonardo Stork from Tigre, who collaborated remotely. The band released a Demo in 2012 featuring nine tracks of bruising deathcore and brutal electronic elements before eventually going dormant.

Broken Neck is a metalcore band from Punta Arenas, Chile, operating at the southern tip of South America. The band released their debut material in September 2015 as a split with fellow Punta Arenas outfit Throxic, titled "Rising the Revenge," featuring five original tracks recorded at De Pirque Producciones.

Brotherhood is a power metal band from Franca, São Paulo, Brazil, formed around 2010–2012 from the ashes of a prior band called Savior. Drawing influence from Blind Guardian, Savatage, and Metallica, the band released their debut album "Where the Gods Collide" (2011) as an independent release and went on to open for Blind Guardian in São Paulo. Their energetic, melodic approach has made them a notable act in the Brazilian power metal underground.

Brutal Abortion is a brutal death metal band from Curitiba, Paraná, Brazil. In 2024 they released the EP "Condemned to Obscurity", a three-track independent release mixed and mastered by Felipe Rosa, drawing comparisons to Suffocation, Gorgasm, and Dying Fetus. Their lyrics explore existential and philosophical themes alongside societal critique.