Carbonizer was a thrash metal band from Natal, Rio Grande do Norte, Brazil, formed in 2013 and active until around 2017. The four-piece independent act released the EP "Nuclear Moon" in May 2016, delivering a raw, aggressive sound rooted in classic thrash with lyrical themes covering religion, violence, and war.

Carcará is a thrash metal band from Fortaleza, Ceará, Brazil, tracing their origins to 2007 under the banner "Horda Carcará." The independent act plays infernal thrash metal rooted in the aggressive 1980s tradition of heavy, thrash, and death metal, and has been an active presence in Fortaleza's underground metal scene.

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.

Carneross was a thrash metal band from Berazategui, Buenos Aires, whose lineup included vocalist and bassist Martín Echeniqué, drummer Alejandro Conde, and guitarists Alan González and Federico Conde. The band released two albums of aggressive Spanish-language thrash — Mass Violencia in 2012 and Religión es Muerte in 2016 — before splitting up.

Carniçal is a death/thrash metal trio from Nova Odessa, São Paulo, Brazil, formed around 2019–2020 by Matheus Castilho (guitar/vocals), Felipe Rocha (drums), and João Paulo (bass). The band released their debut album "Inquisição Espiritual" in 2020, followed by a second album "Meia Noite" in 2023, both recorded independently.

Carnívoro is a groove/death/thrash metal band from Boa Vista, Roraima, Brazil, one of the few extreme metal acts to emerge from that northern state. The band plays original extreme metal blending thrash and death metal influences, with the single "Panorama de Aço" showcasing their hybrid of aggressive rhythms and heavy riffing.

Cataplasma is a thrash/death metal band from Los Ángeles in Chile's Biobío region, originally formed in the early 2000s under the name Carga before settling on their current name. Drawing influence from Chilean legend Dorso as well as international acts like Slayer and Sepultura, the band recorded their debut demo Gore Demencia in 2007 and have remained active in the regional underground metal circuit.

Ceifador is a one-man thrash and speed metal project from Sorocaba, São Paulo, Brazil, created by Clayton Maximinus, a former guitarist of the thrash band Alcoholikiller. Active from 2003 through approximately 2020, the project released a string of independent albums including “Alcoholic Speed Metal” (2010), “Heavy Metal 666” (2014), and “All Hell Breaking Loose” (2020), all self-described as “Alcoholic Speed Metal from Hell.”

Ceiffador is a thrash metal band from Rio de Janeiro, Brazil, formed in 2013. The band is listed on the Encyclopaedia Metallum and maintains an active presence in the Brazilian underground thrash scene. Their name, a deliberate alternate spelling of the Portuguese word for “reaper,” reflects the aggressive, death-fixated aesthetic common to the Brazilian thrash tradition.