Cova was a death/thrash metal band from São Bernardo do Campo, São Paulo, Brazil, active in the mid-2000s underground scene before splitting up. The band played aggressive extreme metal with themes centered on death, terror, and Satanism, in the tradition of the Brazilian extreme metal underground. They released demo material independently before disbanding.

Cova Rasa is a heavy metal band from São Paulo, Brazil, founded by guitarist Jayme Danko and keyboardist Collins Freitas. The band plays traditional heavy metal with horror-themed lyrics drawing on urban legends, serial killers, and supernatural narratives, and has released albums including "Deadline" (2018), "Cruzando Infernos" (2020), and "Another Time" (2025). They have served as opening act for international touring acts including Rhapsody of Fire and HammerFall in Brazil.

Cova Raza is a thrash metal and crossover band from the Pouso Alegre and Borda da Mata area of Minas Gerais, Brazil, formed in 2015. The band operates independently and plays aggressive thrash with crossover hardcore influences, with lyrical themes covering death, violence, and social critique. They contributed a track to the Brazilian metal compilation "Sons de Guerra" on Roadie Metal (Vol. 13, 2019).

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.

Coveirö was a raw black metal project from Curitiba, Paraná, Brazil, active briefly in 2024 before splitting up. The project was driven primarily by the musician Calazar, who handled bass, vocals, guitars, and synths, with Naberius contributing drums as a session player. Their track "Coveiro Necromante," recorded at Neon Records in March 2024, blends depressive and raw black metal aesthetics within Brazil's underground extreme 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.

Covil is a black metal and dungeon synth project from Curitiba, Brazil, formed in 2022. The project blends raw black metal with ambient and dark dungeon synth atmospheres, releasing the album "Creatures of the Cave" in February 2022 via Floppy Tales Records.

Coágulo is an ambient black metal project from Rafaela, Argentina, active since 2018. The project blends atmospheric texture with black metal darkness, as heard on releases including the 2018 debut Coagulation Times and the 2025 album Angst.

Cracked Skull is a death/thrash metal power trio from Itaúna, Minas Gerais, Brazil, formed in 2014 by former members of Calvary Death and Deadliness. The band combines old-school thrash and death metal with progressive arrangements and socially critical lyrics, debuting with the independently released album "Social Disruption" in 2017.