Costra is a death/thrash metal band from Osorno led by vocalist/guitarist Alessandro Innocenti, whose debut album "Releasing the Hate" (2014) delivered eight tracks of raw, direct metal sung in both Spanish and English. The band had performed live before the album's release, and their material blends thrash aggression with hard rock directness in the tradition of southern Chilean heavy music.

Coveiros is a metal band from Porto Velho, Rondônia, Brazil, one of the more isolated corners of the Brazilian extreme metal underground. Beginning with a hardcore and early death metal approach, the band shifted toward thrash and death metal over time, releasing a self-titled album in 2007 featuring fourteen tracks. They remain active as an independent act in the Porto Velho metal scene.

COVID-19 is a one-person death metal and goregrind project from Recife, Pernambuco, Brazil, formed in 2020 by the musician Érdos at the outset of the global pandemic. The project uses the pandemic as both name and lyrical subject, channeling the horror of the coronavirus era into brutal extreme metal. Their EP "When the Traditional Margarine Commercial Family Dies" was released digitally through Póstumo Sölstício 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.

Creación y Muerte is a death metal band from Quito, Ecuador, formed in 2020 and rooted in old-school death metal with elements of doom-death and thrash. Their 2020 release Necrodeimos II draws on recordings made at the winter solstice, reflecting a raw and ritualistic approach to the genre.

Cremation Pyre is a three-piece thrash/black/death metal band from Santiago, Chile, active since the late 2010s. The band recorded their rehearsal session "The Flame Begins" in 2018 and followed it with their self-titled EP in September 2019, which was recorded and mixed by B. Barrantes at Necrotic Studios, featuring original material alongside a cover of Schizo's "Electric Shock".

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.

Crematorium is an active Brazilian thrash/death metal band signed to Satanic Hellbangers Records. The band has contributed to several underground compilations, including The Sound of Satanic Hellbangers Vol. III, and remains a part of Brazil's underground extreme metal circuit.

Crematory was a black/death metal band from São Paulo, Brazil, active in the early 1990s. The independent band explored Satanic themes and released rehearsal material before splitting up.