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 Sorcery is a one-man symphonic black metal project from Campo Grande, Mato Grosso do Sul, Brazil, formed in 2021. The project has released multiple works including "Spiritus Satanae" (2024), "Profane Rites" (2023), and "Spectral Fire" (2023), building a prolific output of orchestral black metal in the Brazilian underground.

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 Trail is a thrash metal band from São Paulo, Brazil, formed in 2022 as a side project by Alex Roque, known from Disorder Of Rage and other Brazilian metal acts. The band released the EP "World Corroded" in April 2022, a tribute to old-school thrash with raw material rooted in 1990s sounds alongside modern production touches. The project operates independently and remains active.

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.

Bloodcraver are a thrash metal band from Duitama, Boyacá, Colombia, formed in 2014. They released their debut EP Skynet in 2018, a three-track independent recording produced in Colombia.

Blooddawn is a black metal band from Curitiba, Paraná, Brazil, with lyrical themes revolving around war, chaos, and evil. The band is signed to No Peace and has remained active in the Brazilian underground black metal scene. They are documented on the Encyclopaedia Metallum and maintain an independent presence on Bandcamp.

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.

Bloodforge is a gothic/doom/heavy metal band from São Paulo, Brazil, known for blending female vocals with male and guttural vocals, drawing influences from doom metal, gothic metal, 1980s heavy metal, and 1970s progressive rock. The band released the EP "Forged" in 2005 and "Screaming Voices" in 2010, and completed recording on a full-length titled "Struggle" in 2016. The lineup features Estefania Bonfanti on vocals alongside multi-instrumentalists including guitarist Tiago Wolf and keyboardist Marcus Lopes.