Biomenace was a thrash/death metal band from Belo Horizonte, Minas Gerais, Brazil, formed in 2010 and later split up. The band operated within Belo Horizonte's historically rich extreme metal underground and released at least one demo, "Eternal Suffering," which is catalogued on Encyclopaedia Metallum.

Biomorf is a science fiction-themed death metal band from Maringá, Paraná, Brazil, formed in 2018 and currently active. The band's lyrics explore technology, space travel, cosmology, and science fiction, setting them apart within the Brazilian death metal underground. They released the EP "Dark Matter Disintegration" in 2018 and have continued releasing material through their Bandcamp page.

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.

Black Ceremonial Kult emerged from Santiago in 2014 playing occult death/black metal rooted in chaos magic and Kabbalistic symbolism, releasing their first demo "Aberah KeDabar MMXIV" in 2015 and a split with Kratherion that same year. Their debut full-length "Communion of the Ancient Gods" appeared in December 2016 on Madrid-based Deathrune Records, compiling 15 tracks of ritualistic black and death metal recorded at the Order Temple of the Dead Studios in Santiago.

Black Djamba is a groove/death metal and hardcore band from Campinas, São Paulo, Brazil, formed in 2023. The five-piece outfit — featuring Pedro Oliveira on guitar, Matheus Daldon on bass, Yuri Dimov on drums, Pedro Mantovani on vocals, and Arthur Custodio on guitar — fuses death metal heaviness with groove and hardcore aggression. They are an independent act operating in the contemporary Brazilian metal underground.

Blasart is a black/death metal band from Santiago, Chile, founded by guitarist Eduardo Vera, who had previously played in the brutal death metal group Orategod. The band debuted with the full-length The Art of Blasphemy in 2008, followed by the Rebellion Abyss Chaos EP in 2014 and the Depravatus EP in 2022; their sophomore full-length Depravatus Christianis Sacris was released through Czech label Lavadome Productions in March 2026. Their anti-Christian lyrical themes are matched by a sound that blends black metal atmosphere with death metal weight and sharp thrash metal aggression.

Blast Bitch is a Buenos Aires death metal and grindcore trio featuring vocalist Constanza Liberte, drummer Arihell Ledo Agüero, and guitarist Pely Macchi. Their 2019 debut album Sociedad Manipulada — recorded at Tribal Record in Ramos Mejía — delivers 11 tracks addressing police repression, violence against women, and institutional corruption.

Blasterror is a death/grind band from Belford Roxo, Rio de Janeiro, Brazil, formed in 2014 and now split-up. The project blended brutal death metal with grindcore, releasing material including the 2016 EP "20 Minutos de Kaos, Ódio e Revolta" via their Bandcamp page. The band operated as an independent act within the Brazilian extreme metal underground.

Bleak Transcendence is a funeral doom/death metal trio from Curitiba, Paraná, Brazil, formed in 2023 by Alexandre Antunes, Michael Siegwarth, and Wagner Müller. The band released their debut album "Mortuanima" in May 2025, a 48-minute work fusing the ferocious intensity of death metal with hauntingly slow funeral doom, enriched by synths, violins, and ethereal textures conveying desolation and introspection.