Crucifixor is a black metal band from Barranquilla, Colombia, active since 2004. With a relentless anti-Christian stance, they released their first demo "Antichristian Retaliation" in 2017 on Legion Tarantula Productions, followed by the EP "War and Victory" (2021) and their debut full-length "Enalteciendo los antiguos principios de la rebelión" in 2025 on In Fastu Negas.

Crucifyter is a death metal band from Sete Lagoas, Minas Gerais, Brazil, widely cited as the first death metal act from that city, with roots tracing back to 1988. The band has maintained a presence in the Brazilian underground death metal scene for decades, with tracks such as "Undelusion" available on SoundCloud. They are catalogued on Metal Archives as an active act within the Brazilian extreme metal community.

Cruelty Society is a death metal band from Bogotá, Colombia. They released their self-titled Demo EP in 2020, a home-recorded effort covering themes of politics, genetics, and war.

Crushing Axes is a death metal project from São José dos Campos, São Paulo, Brazil, founded and led by multi-instrumentalist Alexandre Rodrigues. The project is largely a one-man effort, with Rodrigues handling composition, recording, and vocals, occasionally enlisting session musicians for releases. The 2014 album Undead Warrior, featuring session bass and drums, drew praise for its no-frills Brazilian death metal approach blended with groove, with lyrics exploring Norse mythology and the dark side of the human psyche.

Crypta is a death metal band formed in São Paulo, Brazil in 2019 by former Nervosa members vocalist and bassist Fernanda Lira and drummer Luana Dametto, completing their lineup with guitarists Tainá Bergamaschi and Sonia Anubis. The band released their debut album Echoes of the Soul on June 11, 2021 via Napalm Records to widespread acclaim, establishing themselves as one of the most prominent acts in contemporary Brazilian death metal. Their 2023 follow-up Shades of Sorrow further cemented their international profile.

Culto a la Malevolencia is a death/black metal band from Arica, Chile, formed in the late 2010s and active with blasphemous and anti-Christian lyrical themes. Their debut EP "In Nomine Capra," released in January 2019, draws conceptual inspiration from the Cueva de Salamanca, a Chilean site historically associated with witchcraft.

Cursedflesh is a death metal band from Rio de Janeiro, Brazil, active since 2022 under the Metal Archives listing. Operating under the Bandcamp name Curse of Flesh, the band has released a demo and the EP "Spiritual Preservation Through Self Immolation", delivering a raw, underground death metal sound within Brazil's extreme metal underground.

Cystus is a goregrind and death metal solo project from Cuiabá, Mato Grosso, Brazil, created by the musician known as Goreterrorist, who also performs in bands including Gorempire and Heretic Razor. The project debuted in August 2021 with the demo "Putrid, Fetid and Corrosive," recorded entirely by Goreterrorist at Grotesque Homestudios in Cuiabá, blending D-beat rhythms with gore-themed death metal and grindcore extremity.

Cöffin Röt is a death metal band from Franca, São Paulo state, Brazil, formed in 2021. The band describes their style as "necromantic death metal" and released the compilation "Dawn of Decay – The Demos" in 2021 through their Bandcamp page. They are an active underground act operating out of the Brazilian interior metal scene.