Blasphemaniac is a black/thrash metal band from Atibaia, São Paulo, Brazil, playing what they describe as old school black speed metal rooted in blasphemy, satanism, and witchcraft. The band has released several records including "Lust Possession" (2021), "Bestial Occult Ceremony" (2022), and "Night of the Necromancer" (2023) via Black Hearts Records and Death Defier Productions. They performed at the Brazilian Harmageddon 2024 festival in São Paulo alongside international acts such as Sabbat.

Blasphemer is a death/thrash metal band from Santo André, São Paulo, Brazil, with roots in the local extreme metal underground. The band appeared on the "Headthrashers Live" compilation recorded at the Municipal Theatre in Santo André alongside Necromancia, MX, and Cova, documenting the early São Paulo thrash scene. Their lyrical themes centered on satanism, evil, war, and death.

Blasphemia was a black/thrash metal band from San Felipe, Valparaíso, Chile, with lyrical themes centered on apocalypse, anti-religion, and chaos. The band released two demos and one EP between approximately 2001 and 2005 before splitting up.

Blasthrash is a thrash metal band from São Paulo, Brazil, active since the early 2000s and signed to Dies Irae Records. Drawing heavily from 1980s thrash influences including Kreator, Exodus, and Nuclear Assault, the band released albums such as "Violence Just for Fun" and "Fake News", maintaining an old-school aggressive thrash sound across their career.

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 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.

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.

Blowpipe is a death/thrash metal band from Campinas, São Paulo, Brazil. The band draws direct influence from the major thrash metal acts of the 1980s and death metal bands of the 1990s, and released a self-titled album in September 2020 through their own Blowpipe Records imprint. Their lineup includes Jean Quiles on vocals, Gedeon Alves on guitar, Edynho Baiochi on bass, and Johnny Hoglan on drums.

Bode Maldito is a one-man black/death/thrash metal project from Rio Grande do Sul, Brazil, operating within the Brazilian underground extreme metal scene. The project released the demo "Sodomizing Christ" digitally in 2024, with a limited physical edition of 33 copies issued in late 2024 by Poland's Unpure Records as part of their DIY Ungodly Underground Series. Lyrical themes revolve around Satanism and anti-Christianity.