Cabo de Hornos is a death metal and grindcore band from Monteros, Tucumán, Argentina, featuring Alberto on guitar and vocals, Marco on guitar, Francis on bass, and Tigre on drums. The band released their album Let Them Die, a blunt and uncompromising assault that represents the extreme underground of Argentina's northwestern provinces. Their sound sits at the intersection of grinding brutality and death metal heaviness.

Cachorro da Duença is a grindcore band from Caruaru, Pernambuco, Brazil, formed in 2014. The band channels political indignation and social critique — addressing themes of religion, self-management, and human freedom — through short, furious bursts of extreme music. Their releases include the demo "Degradação Humana" (2014) and the split "4 Ways to Grind" (2017), and they have participated in international underground compilations.

Carnal Atrocity is a death metal/grindcore duo from São Paulo, Brazil, formed in 2020 and comprising Karine Campanille (vocals, guitar, bass, synths) and Emiliano Borges (drums). The band released their debut album "Degenerescência" in June 2020, recorded at Estúdio Mitra and mixed at Crossroads Studio in São José dos Campos, São Paulo.

Carnicero is a death metal/grindcore band from Jundiaí, São Paulo, Brazil, catalogued on Encyclopaedia Metallum as a split-up act. The band's lyrical themes encompassed horror, subconscious depravity, death, and atheism, situating them in the tradition of São Paulo's extreme underground scene.

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.

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.