Comando Etílico is a heavy/thrash metal band from Natal, Rio Grande do Norte, Brazil, rooted in the traditional metal sound of the 1980s. The band released their debut EP "Metal e Prazer" in 2007 and their self-titled full-length in 2010, later following up with "Heavy Metal Réu" (2019) and "Flagelo", which earned them the award for best album of 2025 in the Chamas Underground poll.

Comeculebras is a stoner and doom metal band from San Carlos de Bariloche in Argentina's Patagonia region, formed in 2016. The trio of Emilio Contissa on guitar, Federico Agüero on drums, and Fernando Valeria on bass and vocals released their self-titled debut in 2016 and followed it with Río Rojo in 2017, also contributing to the Doomed & Stoned Latinoamerica Vol. II compilation.

Command is a black metal band from Paraná, Brazil, listed on the Encyclopaedia Metallum with roots traceable to the Brazilian underground black metal scene of the late 1990s. The band is now split-up, having been active across multiple periods, and their Metal Archives profile documents their place within the Brazilian extreme metal underground.

Conan was a heavy metal band from Mar del Plata, Argentina, active from 2007 until their breakup. The band released a live recording titled En Vivo and built a following within Argentina's coastal heavy metal scene before eventually disbanding.

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.

Confessori is a progressive and power metal band from São Paulo, Brazil, listed on the Encyclopaedia Metallum and active in the city's long-established metal scene. The band plays in the melodic progressive metal tradition that São Paulo has been known for through acts like Angra and Shaman.

Confiteor is a heavy metal band from Salvador, Bahia, Brazil, formed in 2018 and active within the city's growing metal scene. The band performs traditional heavy metal and is registered in the Encyclopaedia Metallum as part of the Brazilian heavy metal underground.

Confounded is a death metal band from Recife, Pernambuco, Brazil, formed around 2013 and active in the northeast Brazilian extreme metal scene. The band plays heavy, groove-inflected death metal and maintains a presence on Bandcamp and Instagram under the handle @confoundedband.

Confronto was a deathcore and metalcore band from Rio de Janeiro, Brazil, formed around 2001 and known for politically charged Portuguese-language lyrics. The band released several albums including "Causa Mortis" (2005), "Sanctuarium" (2008), and "Die Young" (2014) before splitting up.