Choke is a groove/death metal and grindcore band from Curitiba, Paraná, Brazil. Signed to Top Music Brazil, the band's lyrical themes center on death, misery, and social unrest, and their early releases include the demo "Dictatorshit Holocaust from Third World" (1999) and the split CD "Manifest" (2001) with STN, followed by "Slum Radio" in 2003.

Clint X Eastwood is a raw black metal and grindcore band from Catanduva, São Paulo, Brazil, formed in 2023. The band's lyrical themes revolve around Clint Eastwood films, an unusual conceptual hook within the Brazilian underground extreme metal scene. They released a self-titled demo in May 2023, available on Bandcamp.

Colapso was a grindcore and crossover band from Recife, Pernambuco, Brazil, active from 2004 until splitting up around 2007. The band recorded their first demo "É o Fim" ("It's the End") in 2005 with eleven tracks, and later released a split with fellow Recife act Corroídos pelo Ódio in late 2006 that gained wider circulation across Brazil. The group disbanded after members departed to pursue other musical projects.

Colt.45 is a brutal death metal and grindcore band from Belo Horizonte, Minas Gerais, Brazil. Their 2016 album "Extinction", released through Terceiro Mundo Chaos Discos, drew attention in the underground extreme metal scene for its technically demanding riffs, blastbeat-driven drumming, and vocals ranging from shrieking highs to guttural lows across twelve relentless tracks.

Conchaculo is a grindcore band from Buenos Aires, Argentina, known for combining blast-beat intensity with themes of antifascism and dark humor. Active since 2019, they have released a self-titled album in 2018, Blastbeat y Sustancia in 2020, and Las flores del herrero, and appeared on the international Death To Capitalist Grind Vol. 1 compilation.

Corchazo is a death metal and grindcore band from Montevideo, Uruguay, who released their debut demo in May 2025. The six-track self-titled demo spans grinding hardcore punk and deathgrind territory, including tracks such as "Mi Infierno" and a series of numbered "Corchazo" cuts. They are among the newest entries in Montevideo's underground extreme metal scene.

Corpus Christi is a death metal and grindcore trio from Buenos Aires, Argentina, formed in 2024 by Pely on guitars and vocals, Marta on drums, and Bruno on bass and vocals. The band moved quickly, releasing their Demo 2024 in April 2024 and following it with the Altares de Satanás EP in July 2024, both recorded at Tribal Records in Buenos Aires and released through Demonical Devastation Records.

Cranial is a death metal and grindcore band born in Viña del Mar, Chile in 1994, making them one of the longer-running extreme metal acts in the country. The band has released material across several decades, with their 2024 single "Canon" featuring guest drummer Marco Pitruzzella marking a return to activity.

Crematorio is one of Argentina's pioneering death metal and grindcore bands, active in Tigre, Buenos Aires since the early 1990s alongside fellow scene originators Exterminio and Scud. Their first full-length, "El Rostro de la Opresión", appeared in 1995 and established their focus on themes of social corruption and gore; the band continued releasing material across multiple active periods and issued a reissue of the album through Careless Records.