Catacumba is a black metal band from Serra, Espírito Santo, Brazil, formed in December 2003. Their sound blends the primal aggression of South American black metal with the frostbitten atmosphere of the Scandinavian scene, with lyrical themes spanning philosophy, nihilism, and hatred. Their debut full-length album Kratos was originally released in 2010 through Onslaught Records and reissued on CD in 2014 by Fallen-Angels Productions with a live bonus track.

Catharsis Nocturna is a black metal band from Córdoba, Argentina, founded in 2006 by Darker Mysteria on vocals and keyboards, Austhrum Dominius on guitars and programming, and Svart Sjel on bass. The band released their first demo, Genesis Dramatica de lo Difunto, in August 2006, followed by a second demo in 2009, both steeped in themes of darkness, occultism, and nocturnal mysticism. Darker Mysteria and Austhrum Dominius have remained central to the Argentine underground black metal scene, also contributing to collaborations with other regional acts.

Caverna is a black metal band from Patos, Paraíba, Brazil, formed in 2019. The band operates in the raw, underground tradition of Brazilian black metal and is listed on the Encyclopaedia Metallum. Patos is a small city in the northeast of Brazil with a sparse metal scene, making Caverna one of its rare representatives of the genre.

Cenotafio is a black/death metal duo from Temuco, formed in 2015 by guitarist/vocalist Daniel Hermosilla and drummer/vocalist Patricio Kusnir, both veterans of the southern Chilean underground through prior projects Odrum and Invehertex. Their debut demo "El Encierro de las Grandes Revelaciones" (2015) established a cavernous, slow-burning sound that carried through their debut full-length "La Fatídica Excrecencia de la Subtierra" (Memento Mori, 2017), the sophomore "Larvae Tedeum Teratos" (Blood Harvest, 2019), and the 2026 third album released on vinyl through Demoniac Productions.

Chaotic Desolation is a one-man melodic death/thrash/black metal project from Osasco, São Paulo, Brazil, founded by multi-instrumentalist Thiago Alboneti, who is also known for his work in Beyond Chaos and Infinity of Thoughts. The project released its debut album Biological Sonnet in March 2024, drawing influences from Machine Head, Iced Earth, Nevermore, and Lamb of God.

Cheol is a black metal band from Goiânia, Goiás, Brazil, active and independently released. The band has been noted in the Brazilian metal press as a distinctive force in the national black metal underground, releasing material through their Bandcamp page. They remain unsigned and active in the Goiás extreme metal scene.

Chifre Negro is a black metal band from São Luís, Maranhão, Brazil, formed in 2015. The band operates independently within the Brazilian extreme metal underground and is listed as active on the Metal Archives. Their name translates to "Black Horn" in Portuguese.

Childslave is a Chilean black metal solo project that describes its output as "Miserable Black Metal," drawing on poetry by Charles Baudelaire for song titles and lyrical themes. Their self-titled debut tape, originally pressed in a limited edition of 50 copies, was released in June 2024 and spans twelve tracks across roughly 44 minutes of bleak, lo-fi black metal.

Choronzonic is a black metal band from Patos de Minas, Minas Gerais, Brazil. The band released the EP "Where Evil Dwells" in April 2019, a three-track release with lyrics in both Portuguese and English built around Satanic and occult themes. They release music independently through Bandcamp and are documented on Encyclopaedia Metallum.