Bogotah is a groove metal band from São Gonçalo, Rio de Janeiro, formed in 2014. The band blends heavy rock and metal with grooved riffs and fast passages, drawing comparisons to the southern groove metal sound. They released an EP in 2014 and subsequently put out two full-length albums, including 'Um Brinde Ao Fim do Mundo' promoted during a 2017 tour, and remain active on the Rio de Janeiro live circuit.

Bonebeast is a death/thrash metal band from Presidente Dutra in the central region of the state of Maranhão, Brazil, formed in late 2014. The band began as a duo with Matheus Coelho on vocals and guitars and Ely Araújo on bass, releasing early demos between 2015 and 2016. They completed their lineup with drummer Gabriel Matos in 2018 and recorded their debut EP 'From the Ashes to the Chaos' at Headcrusher Studio in São Luís, releasing it in 2019.

BoneStripper was a thrash metal band from Belo Horizonte, Minas Gerais, Brazil, formed in 2014. The band released the EP 'A View of Heaven from a Seat in Hell' in January 2014 and was active within the Belo Horizonte metal scene before eventually splitting up.

Bong of Depression is a Brazilian doom, black metal, and drone project formed in 2024, with member Niili handling instruments alongside drummer Guna. The project released a split with Mourning Souls through Podreira Records in January 2024 and followed it with the full-length 'Æternal Doomed' in August 2024, exploring bleak atmospheres across drone, doom, and dark ambient terrain.

Bordel Inferno was a stoner rock and stoner metal band from Rio de Janeiro, Brazil, formed in 2014. The band consisted of Willie Zureta on vocals, Rodrigo Treze on guitar, Eerie Jones on bass and vocals, and Pedro Quintino on drums, and released their debut EP 'Volume I' in January 2014.

Boske are a Buenos Aires raw black metal project who have maintained a prolific output since 2021, releasing "Meditacion y muerte" and "Una leccion de Metal Negro" that year, followed by "Perseverancia y disciplina" in 2022 and "A punta de espada" in 2024. Their recordings lean hard into lo-fi production, visceral intensity, and an uncompromising fidelity to black metal's most primitive aesthetic. The band operates independently and remains active.

Boto não é Golfinho was a death metal and grindcore band from Londrina, Paraná, Brazil, active until their 2022 split-up. The band played fast, abrasive extreme metal in the noisecore tradition, releasing the album "Parlamentáveis" in March 2022, a nine-track record with a combined runtime of just over ten minutes.

Braincrusher is a crossover thrash band from Rio Claro, São Paulo, Brazil, formed in 2015. The band recorded their debut release "Mosh Crush Your Brain" live at the Válvula 9 studio in Rio Claro in August 2015, blending hardcore punk energy with thrash metal riffs, and followed it with the EP "Pátria Falida" in 2017 before going on hold.

Brainscanner is an industrial sludge metal project from São Paulo, Brazil, formed in 2016 by Ricardo Siqueira and Alexandre Dantas, known for slow, heavy, and mechanistic riff-driven compositions. The duo has been highly prolific, releasing a string of albums including "Trilobita" (2016), "Phoneutria" (2018), "Secret Transmissions" (2020), "Moebius" (2021), and "Slow Evolution" (2023), the latter recorded over three years in home studios.