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 Insanity is a Brazilian raw black metal project formed in 2022, operating within the underground DIY black metal tradition. The project has released a self-titled demo and the single "Sexta-Feira Santa," working independently without label backing.

Blood Ocean is a thrash metal band from São Paulo, Brazil, formed in 2014 and still active. The band plays in the aggressive tradition of Brazilian thrash metal and operates as an independent act within São Paulo's underground metal scene.

Blood Rites is a black metal band formed in Santiago, Chile, in 2016, later operating from Berlin, Germany, with a sound rooted in the Hellenic black metal tradition of the late 1980s and drawing comparisons to Impaled Nazarene, Thou Art Lord, and Ancient Rites alongside South American underground fierceness. Their Demo 1 was released on cassette through Caverna Abismal Records in 2018, followed by the Cursed Blood 7" EP in 2021 and the full-length Diabolical Mystical Ritual through Invictus Productions in 2026.

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.

Bloodfire is a heavy metal band from Floriano, Piauí, Brazil, operating as an independent act. The band has released material including the single "In the Name of Metal," part of the EP "Dangerous Game," and maintains a presence on SoundCloud and social media. They are listed on the Encyclopaedia Metallum and represent the heavy metal scene in the interior of northeastern Brazil.

Bloodgrave is a death 'n' roll band from Uberaba, Minas Gerais, Brazil, playing old-school death metal with rock-influenced grooves. The band's lineup includes Anderson on vocals, Dennis on guitar, Márcio on bass, and Rauy on drums. Active since 2014, they have shared music through SoundCloud and Bandcamp, operating independently within the Brazilian underground metal scene.

Bloodstained Resurrection is a black metal band from Antofagasta, Chile, formed in 2015, signed to Total Pagan Madness Productions, with lyrical themes spanning apocalypse, Satanism, and occultism. Their recorded output includes the Promo MMXIX, Flame's Veneration, and Praeludium ad Praecipitium releases.