Corrosive Nails is a death/thrash metal band from Canoinhas, Santa Catarina, Brazil, founded in 2020 by members who previously played together in the death metal project Nekromantik. Initially performing under the name Evilcünt and playing covers of acts like Toxic Holocaust and Repulsion, the band evolved toward original material, releasing the EP “No Rest For The Mind” and the full-length “Fragments of a Broken Faith,” which solidified their heavier death/thrash sound.

Cosmic Sepulcher is a death/doom metal solo project from Euclides da Cunha, Bahia, Brazil, formed in 2024 by multi-instrumentalist Athayde Neto, who handles all instruments, vocals, recording, and production. The project draws on cosmic horror and the Cthulhu Mythos for lyrical inspiration, crafting dense, funereal compositions that explore dark fantasy and existential dread. Neto is also active in the bands Wiseblood, Töhil, and Adumbrall.

Cova was a death/thrash metal band from São Bernardo do Campo, São Paulo, Brazil, active in the mid-2000s underground scene before splitting up. The band played aggressive extreme metal with themes centered on death, terror, and Satanism, in the tradition of the Brazilian extreme metal underground. They released demo material independently before disbanding.

Cracked Skull is a death/thrash metal power trio from Itaúna, Minas Gerais, Brazil, formed in 2014 by former members of Calvary Death and Deadliness. The band combines old-school thrash and death metal with progressive arrangements and socially critical lyrics, debuting with the independently released album "Social Disruption" in 2017.

Craneo is a thrash/death/groove metal band from Corrientes, Argentina, whose lineup includes Walter Gómez on vocals, Ariel Flores on guitar, David Vallejos on bass, and Ariel Duarte on drums. They released a six-track demo in March 2020 and appeared on the compilations "Medellín Death Zone Vol. 1" and "Death To Capitalist Grind Volume One" with tracks including "Cura crucificado" and "Eres cadáver".

Crente is an extreme metal band from João Pessoa, Paraíba, Brazil, formed around 2022–2023 by members including Juan Apolinario (ex-Insecticida) and Marciel Argentina (Tiranicídio). The trio blends death and thrash metal under the sardonic self-description of "extreme gospel music," and released the compilation album Analects in October 2023, collecting their recorded output up to that point.

Cristo is a groove/death/thrash metal band from Río Cuarto, Córdoba, Argentina, formed in 2023. The band released a self-titled EP available on their Bandcamp page, carving out a heavy, riff-driven sound within the Córdoba metal scene.

Cruscifire is a death metal band from Atibaia, São Paulo, Brazil, formed in 2005 and rooted in the Brazilian extreme metal underground. The band began with a death/thrash approach before shifting toward a heavier death metal sound, releasing two demos, a full-length, and an EP over their first decade. Their 2016 album Hellspawn, recorded at Undead Studio in Atibaia, showcases eight tracks of raw, unrelenting death metal drawing on classic horror themes.

Crux Cullum is a death/black metal band from Belo Horizonte, Minas Gerais, Brazil, formed in 2007. The band operates within the underground extreme metal scene of Belo Horizonte, a city with a long tradition of producing extreme metal acts, blending black and death metal elements in their sound.