Clemency is a Christian death metal band from Londrina, Paraná, Brazil. The band released the demo "Satan's Funeral" (1998) and the full-length "Spiritual Domination" (1999), the latter reissued in 2019 via Warriors Records and Eirene Records. Their lyrical themes centered on Christianity, distinguishing them within Brazil's death metal underground.

Coagulo was a death metal band from San Juan, Argentina, formed in 2015 and later split up. The five-piece lineup featured Julián Ibars on vocals, Martín Manrique and Julio Rosales on guitars, Elías Vega on bass, and Daniel Fernández on drums.

Coffinfeeder is a death metal band from Sabará, Minas Gerais, Brazil. The band has recorded material including the track "Enslaved by Ignorance" and maintains an active presence in the Brazilian underground death metal scene. They operate independently and have a Bandcamp page under the handle coffinfeeder666.

Coldblood is a death metal band from Rio de Janeiro, Brazil, originally formed in 1992, with themes rooted in Satanism and anti-Christianity. After two break-ups and a permanent reformation in 2005, the band released their debut full-length "Under the Blade I Die" in 2007, followed by "Chronology of Satanic Events" (2013) and "Indescribable Physiognomy of the Devil" (2016), the latter released through Selfmadegod Records.

Confounded is a death metal band from Recife, Pernambuco, Brazil, formed around 2013 and active in the northeast Brazilian extreme metal scene. The band plays heavy, groove-inflected death metal and maintains a presence on Bandcamp and Instagram under the handle @confoundedband.

Conjurador is a black/death metal project from Porto Alegre, Rio Grande do Sul, Brazil, formed in 2021 with themes centered on Satanism and occultism. The band released multiple demos in their first year of activity and followed up with the EP "Conjurers of the Infernal Key" in 2022.

Consumed is a death metal band from Quillota whose recordings have appeared through Chilean extreme metal label Mushantufe Productions, including the EP "Dehumanize to Demonize" (2015) and the rehearsal cassette "Profanation" (2017). Their lyrical focus on anti-religion, misanthropy, and blasphemy situates them within the blasphemous Chilean death metal underground.

Contemptible Ruins is a death metal and crust punk band from Brasília, Brazil, formed in 2021. Their sound blends stenchcore and death metal influences, drawing comparisons to the rawer end of the crust/death spectrum. The band has released several recordings including a self-titled debut (2021), "The Radicalization of Human Pathology" (2022), and "Point of No Return" (2023).

Convulsive is a Brazilian old-school death metal band formed in 2020, with members split between Cuiabá (Mato Grosso) and Rio de Janeiro, who composed and recorded their debut entirely remotely. Their first album, "The Grotesquery Ruins of Death" (2022), drew praise for its thick, murky sound reminiscent of early 1990s Finnish and American death metal, and earned an 8/10 from Metal Forces Magazine. The project grew out of members' involvement in other Brazilian extreme metal bands, including Feretral and Obscure Relic.