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.

Blood Horror is a death metal band from Florianópolis, Santa Catarina, Brazil, formed in 2015 and currently on hold. The band emerged from the underground metal scene of Florianópolis and released material independently before going dormant.

Blood Torment is a raw black/death metal band from Patos, Paraíba, Brazil, with lyrical themes centered on Satanism, death, and violence. The band released singles including "Wanderer of Hell" (2019) and "Torment of My Soul" (2020), as well as a split with Macabre Impurification titled "S.A.T.A.N.I.C.H.O.L.O.C.A.U.S.T" (2020), all self-released. The band has operated intermittently, with active periods in the late 2010s and again from 2023 onward.

Blood Warrior was a thrash/death metal band from São Paulo, Brazil, active from around 2010 before eventually splitting up. The band blended the aggressive riffing of thrash metal with death metal heaviness in the tradition of Brazilian extreme metal. They released music independently and are documented in the Encyclopaedia Metallum.

Bloody Morgue is a death metal band from Porto Alegre, Rio Grande do Sul, Brazil, formed in 2015 under the name Infernal Warfare before adopting their current name. The band released a self-titled debut in 2016 and is currently an independent act, continuing to operate within the Rio Grande do Sul extreme metal underground.

Bloody Vomit was a death metal band from Belo Horizonte, Brazil, active in the early 2020s before splitting up. The band released the demo "He's Dead" and drew on the raw, aggressive traditions of the Brazilian extreme metal underground. They were active on SoundCloud and Bandcamp during their brief existence.

Bodhum is a death metal and grindcore band from Rio de Janeiro, Brazil, active since 2010. The band debuted with the EP "Sobre Homens E Porcos" in 2010 and has since released additional albums including "Causa Mortis", "Consórcio da Morte", and "Extremo". They participated in the 2020 Brazilian tribute compilation "A Brazilian Tribute To Nasum: Mieszko Lives", released through The Grind Records.