Carnage is a black/thrash metal band from Betim, Minas Gerais, Brazil, listed on Encyclopaedia Metallum as an active act under Headbanger's Behavior. The band's lyrical themes center on anti-religion, death, darkness, and hell, placing them firmly within Brazil's extreme underground metal tradition.

Clamatorius is a black/death metal band from Goiânia, Goiás, Brazil, originally active from 1999 to 2005 under their own name after an earlier incarnation as Postumus (1998–1999). The band is notable for fusing extreme metal with Christian lyrical themes and released the five-track album "Consummatum Est" through Blackened Label Records.

Clan dos Mortos Cicatriz is a death-punk band from Curitiba, Paraná, Brazil, blending raw black metal, death metal, and hardcore punk into what the underground has called "nekro-hardcore." The band released their debut album "Técnicas de Morte" in March 2025 via Sentient Ruin Laboratories, a 15-track, 25-minute record described as a grim manifesto drawing imagery from slums, prisons, morgues, and war zones.

Corrossive is a death metal band from Buenos Aires, Argentina, formed in 2015. They released the demo Overcome the Darkness in 2016 before issuing their debut full-length The Great Beyond in 2021, an eleven-track record that draws on death, doom, progressive, and thrash metal influences.

Crucifixion BR is a black/death metal band that originated in Rio Grande, Rio Grande do Sul, Brazil, before relocating to São Paulo. The band released their debut album "Destroying the Fucking Disciples of Christ" (2014) through Horror Pain Gore Death Productions, blending diabolic black metal with 1980s thrash and death metal influences. Their second album "Human Decay" (2021), released on Shinigami Records, featured guest appearances from Dave Ingram of Benediction and André Rod of Brazilian thrashers Attomica.

Cult of Horror is a black/speed metal trio from Rio de Janeiro, Brazil, formed in 2015 and featuring members with ties to underground acts including Whipstriker, Apocalyptic Raids, Comando Nuclear, and Bordel Inferno. The band released their debut album Babalon Working in April 2016, recorded at Tokaia Studio in Rio de Janeiro, blending first-wave black metal rawness with Motörhead-influenced speed metal and d-beat punk rhythms. Their sound draws thematic inspiration from cult horror cinema and occultism.

Daimoth is a black/heavy metal band from Timbaúba, Pernambuco, Brazil with a history of activity stretching back to 2000 and a period of reactivation around 2017. The band plays raw black metal with satanic lyrical themes, and released the demo "Inquisition" (featuring tracks such as "Nocturnal Terror" and "Fallen Angel") through Acclaim Records.

Dark Slumber is a black/death metal band from the Barra Mansa and Volta Redonda area of Rio de Janeiro state, Brazil, formed by musicians who had previously played in bands such as Abominor and Trevas. Their sound draws on the Greek black metal tradition, blending dark, atmospheric guitar work with guttural vocals. The band released the demo "Qliphotic Black Dimensions" in 2013, followed by the full-length "Dead Inside" in 2015.

Darkhammer is a black/thrash metal band from Ananindeua, Pará, Brazil, formed in 2022 with a sound rooted in hatred, destruction, and anti-Christian themes. The trio — featuring Lucas Jhones on guitars and vocals, L. Blanco on bass, and Vitor Hugo on drums — released their debut album “Possessed by Death” in November 2022, which includes a cover of Mayhem’s “Freezing Moon” alongside six original tracks recorded at Fabrika Studios.