Blazing Dog is a traditional heavy metal band from Brasília, Brazil, formed in 2009 and playing in the style of classic acts like Judas Priest, Iron Maiden, and Manowar. The band recorded their album "Deus Ex Machina" at Orbis Studio and Jam's Studio in Brasília, covering lyrical themes of history, war, literature, and metal. They remain an independent act within the Brazilian capital's metal scene.

Blindado are an Argentine heavy metal band founded by members Charly, Jorge, Adrián, and Juan, who released their debut album "Distorsión" in 2007 through Hurling Metal Records, featuring driving riffs, extended guitar solos, and even a heavy metal take on the tango standard "Yira-Yira." A second album, "En Las Calles", followed on the same label before the band returned in 2017 with "Argentina Despierta", an independently released record with politically charged lyrics addressing Argentine society. They remain active today.

Blixten is a female-fronted heavy metal band from Araraquara, São Paulo, Brazil, formed in 2017 by vocalist Kelly Hipólito. Drawing heavily on classic 1980s metal acts such as Iron Maiden, Dio, and Motörhead, the band released their debut EP "Stay Heavy" in 2018, featuring five original songs recorded at Távola Studio in Araraquara. The group has been notable in the local scene for championing women's visibility in Brazilian heavy metal.

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.

Britannia are a heavy metal band from San Francisco, Córdoba, Argentina, built around the Possetto brothers — Javier "Jama" on drums and Sergio "Checho" on bass and vocals — alongside guitarist Ángel "Tato" Grangetto. The band chose their name as a direct tribute to the British bands that inspired them, including Motörhead, Iron Maiden, and Judas Priest, and their sound reflects that NWOBHM-rooted lineage. Their lyrics engage with social and political themes while maintaining an independent, non-partisan stance.

Bulletback is a heavy metal band from São Paulo, Brazil, active in the Brazilian underground metal scene. The band has contributed to notable Brazilian tribute compilations, performing "Where Eagles Dare" on the 2020 double album "Somewhere in Brazil – The Brazilian Tribute to Iron Maiden" and "World Painted Blood" on the 2021 "Brazil Painted Blood – The Brazilian Tribute to Slayer."

Burst into Fire is a heavy metal band from Jacareí, São Paulo, Brazil, formed in 2019. The band debuted with the EP "Heart of Ashes" in late 2019 and released their first full-length album "Chimera" on October 29, 2021, a ten-track record that established them as part of the newer generation of Brazilian heavy metal acts.

Bushido is a traditional heavy metal band from Belén de Escobar in Buenos Aires province, Argentina, featuring vocalist Boris Bargas, guitarists Ian Undery and Andrés Mata Suárez, bassist Federico Fahsbender, and drummer Ezequiel Castro. The band released their self-titled Bushido EP in 2018, a three-track recording produced at FDM Studios, showcasing their commitment to classic heavy metal style.