Betrayed by the Way is a Metalcore band from Lima, Peru, formed in 2014. The band blends metalcore with progressive metal and djentcore influences, as heard on their 2015 self-titled EP and their 2016 full-length "Until Last Breath."

Betrayer is a heavy and thrash metal band from Belo Horizonte, Minas Gerais, Brazil, formed in 2019 and currently active. Based in one of Brazil's most historically significant metal cities, the band draws on the Brazilian heavy and thrash tradition rooted in the scene that produced acts like Sepultura and Sarcófago. They are catalogued on Encyclopaedia Metallum.

Bewitchment is a one-man death/thrash metal project from Rio Grande da Serra, São Paulo, Brazil, helmed by Rodrigo "Infectz" Costa. The project draws heavily on old-school death metal influences, particularly the early works of Death and Pestilence's "Malleus Maleficarum" era, blending those sounds with thrash aggression. The project released the full-length "Oblivion Shall Reign" (2019) in a limited pressing of 500 copies through multiple Brazilian underground labels including Rapture Records and Extreme Sounds Records.

Beyond the Grave is a thrash metal band from Itaquaquecetuba, São Paulo, Brazil, with lyrical themes centered on war, death, and religion. The band released the full-length album "Predictions of Disgrace" in 2016 through Kill Again Records, their second studio effort, recorded at No Limits Estúdio in Arujá. They have maintained an active presence in the Brazilian underground thrash scene with additional demo and compilation appearances.

Big Bastards are a Santiago groove and D-beat metal band who released their self-titled five-track debut in September 2021. The record is a raw and direct statement of political and social rebellion, with tracks like "Hijos del fuego" and "Muere por tu lider" driving home its confrontational edge.

Billy Grind e os Podres is a one-man noisecore and raw black metal project from Catanduva, São Paulo, Brazil, started by musician Billy Grind in 2020. The project is rooted in the Brazilian underground noise and grindcore circuit, self-described as delivering "the worst noise of your life," and has been prolific since its inception with releases including "Demo 1" (2020) and the compilation "A Fistful of Noise" (2021). The project later expanded into raw black metal territory while maintaining its lo-fi, abrasive aesthetic.

Bio Terror are a black/thrash metal band from Chillán, Chile, operating in the tradition of South American necro metal with themes of anti-Christianity, destruction, and war. Their 2023 compilation "Blasfemia, Sodomia y Muerte," released on limited cassette through Spain's Profaner Records, gathered material from across the band's entire history alongside live recordings from a 2021 show in Talca.

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.