Critical Terror is a thrash/death metal band from Bogotá, Colombia, formed in 2021. Drawing on themes of anti-religion and Colombian history, they released their debut demo "Renace el Terror" that same year.

Cron Demom is a one-man atmospheric black metal and ambient project from Goiânia, Brazil, created and performed entirely by Alexander Massaini. The project blends atmospheric black metal, DSBM, funeral doom, and ambient influences into a dark, melancholic sound. Cron Demom released its debut album "Satan's Lies" in August 2019 and has since maintained an active presence on Bandcamp with multiple releases.

Cronos N.T. is a death metal band from São Paulo, Brazil, active since 2018. The band released the single "Last Medjai" in October 2020, a track drawing inspiration from the Assassin's Creed Origins character Bayek, previewing their album "Acto Omega". They operate as an independent act within the São Paulo underground metal scene.

Crookhead is a progressive death metal band from Araraquara, São Paulo, Brazil, formed in 2016. The band operates as an independent act and maintains profiles on Bandcamp and SoundCloud where their material is available. They are part of the growing progressive extreme metal underground scene in the interior of São Paulo state.

Crossfear is a melodic death metal and metalcore band from Santo André, São Paulo, Brazil, formed in 2012. The band released their debut EP "Survive Through Fear" on October 10, 2012, a four-track release recorded at Estúdio Magma featuring tracks such as "Compromise," "War of Ideals," and "Scars of Life." They have continued as an independent act within the ABC Paulista region's metal underground.

Crossover was an Argentine heavy metal act whose Bandcamp catalogue includes the albums Funeral Flowers and Fantasmo, along with the sprawling release Cryptic and Dire Sallow Faced Hoods Blast Off into Oblivion. The band is listed as split-up on Metal Archives after operating under the Darkbeat banner.

Crotalus was a thrash and heavy metal band from Salvador, Bahia, Brazil, active from 2019 until their split-up. The band took their name from the genus of rattlesnakes, and released material independently through Bandcamp. They were part of the underground heavy metal scene in Bahia before disbanding.

Crow Dominions is a black metal duo from Mendoza, Argentina, formed by the musicians known as Hellpher and Misahn after their previous band Valquiria disbanded. The duo released Emerging Holocaust in 2021 and have been active on Bandcamp with tracks including Ignis Luciferian Symphony.

Crown of Fallen Heroes is a Brazilian epic pagan black metal project based in Mairiporã, São Paulo, conceived as a one-man band devoted to ancient history, mythology, and pagan civilizations. In 2020 the project released "From Ruins of the Ancient Dark Ages," an album that combines epic atmospheres, occasional clean vocals, acoustic guitars, and blackened metal, drawing inspiration from 1990s extreme metal, folk music, and classical soundtracks. The album received positive attention in the international underground pagan metal community and was made available on CD through specialty metal labels and stores.