Bipolar Noise is an extreme metal band from Jacareí, São Paulo, Brazil, formed in 2021. The trio blends grindcore, death metal, and hardcore with psychedelic lyrical themes and shifting tempos, releasing the EP "Necrocão" on Bandcamp.

Birror is a crossover thrash band from Buenos Aires whose debut album Birr 'em All, released in December 2014, packed 17 tracks of punishing riff work into a single record. The band has roots in Argentina's underground crossover and hardcore scene and counts songs like "Rey de Maltas" and "Birrorman" among their early staples.

Bisonte is a stoner/doom/sludge metal band from Tuxtla Gutiérrez, Chiapas, formed in 2019 by Paulina and Mario as a vehicle for heavy, spiritually charged music. The band released their debut EP, The Beholder, in 2021, and followed it with their first full-length, Mother Tempest, in February 2025, which includes a cover of The Melvins' With Teeth. Their music draws on the slow, crushing traditions of doom and sludge metal with an introspective lyrical focus.

Bitterdusk were born in Santiago in 1995 and have built a slow-burning catalog that blends melancholic doom metal with progressive and NWOBHM influences, all sung entirely in Spanish. Their discography spans five albums from the debut "Pantheon" (1997) through "Guardián del Valle" (2024), the latter released on a 300-copy vinyl pressing by Czech label Doomentia Records and recorded at AudioCustom Studios in Santiago.

Black Achemoth is a black metal band from São Paulo, Brazil, active since 2004 and focused on occult and Satanic themes. The band has released multiple albums including "Revealing the Somber Powers of Hell" (2008), "Under the Veil of Darkness" (2012), and "Ater Doctrina et Consecratio" (2014).

Black Bull Fuzz is a stoner rock trio from Jaú, São Paulo, Brazil, formed in 2017. The band delivers heavily fuzzed, groove-driven stoner rock, and released their debut EP "Sound of Chaos" in 2017.

Black Cascade is an atmospheric black metal band from Salvador, Bahia, Brazil, formed in 2015 and operating as an independent act. The band is part of Salvador's underground extreme metal scene and releases music through their Bandcamp page.

Black Celebration is a black metal band from Colatina, Espírito Santo, Brazil, formed in 2014. The band operates within the underground scene with lyrical themes centered on anti-Christianity, blasphemy, and war.

Black Century was a heavy metal band from Natal, Rio Grande do Norte, Brazil, active from 2013 until splitting up. Drawing influence from classic acts such as Black Sabbath, Metallica, and Iron Maiden, the band released the EP "Shadow Man" (2013) and the full-length "Crusade for the Glory" (2014) before disbanding.