Crossover was an Argentine heavy metal act whose Bandcamp catalogue includes the albums Funeral Flowers and Fantasmo, along with the sprawling release Cryptic and Dire Sallow Faced Hoods Blast Off into Oblivion. The band is listed as split-up on Metal Archives after operating under the Darkbeat banner.

Crotalus was a thrash and heavy metal band from Salvador, Bahia, Brazil, active from 2019 until their split-up. The band took their name from the genus of rattlesnakes, and released material independently through Bandcamp. They were part of the underground heavy metal scene in Bahia before disbanding.

Crow Dominions is a black metal duo from Mendoza, Argentina, formed by the musicians known as Hellpher and Misahn after their previous band Valquiria disbanded. The duo released Emerging Holocaust in 2021 and have been active on Bandcamp with tracks including Ignis Luciferian Symphony.

Crown of Fallen Heroes is a Brazilian epic pagan black metal project based in Mairiporã, São Paulo, conceived as a one-man band devoted to ancient history, mythology, and pagan civilizations. In 2020 the project released "From Ruins of the Ancient Dark Ages," an album that combines epic atmospheres, occasional clean vocals, acoustic guitars, and blackened metal, drawing inspiration from 1990s extreme metal, folk music, and classical soundtracks. The album received positive attention in the international underground pagan metal community and was made available on CD through specialty metal labels and stores.

Crows of Agartha is a symphonic metal project from Buenos Aires, Argentina, formed in 2016 by vocalist and keyboardist Aldo Blanco alongside bassist Jesus Palavecino. The band released their album Inner Earth in 2019, drawing on fantasy, folk, and pagan themes woven through orchestrated metal arrangements.

Crua-chan is a stoner/doom metal band from Buenos Aires, Argentina, featuring Christian Garis on drums, Jorge Patiño on bass and vocals, and David Dos on guitar and vocals. The trio released a seven-track self-titled album in 2018, blending crushing riffs with psychedelic textures and unconventional instrumentation.

Crucificator is an extreme metal band from Salvador, Bahia, Brazil, whose sound evolved from black metal roots into death metal. The band released the full-length "Then Hatred Reborn at Dawn" (2021) through Voz da Morte Productions, drawing comparisons to acts like Morbid Angel, Sarcofago, and Suffocation. Their themes center on occultism, and the lineup features members operating under stage names including Malignum, Hategun Warcaller, and Lord Stabber.

Crucifier was a thrash metal band from Santos, São Paulo, Brazil, formed in 1999. The band later renamed themselves The Crucifier and released material including splits and studio recordings as part of the Brazilian thrash underground. They are documented on Metal Archives as part of the broader São Paulo extreme metal scene before their eventual dissolution.

Crucifixion BR is a black/death metal band that originated in Rio Grande, Rio Grande do Sul, Brazil, before relocating to São Paulo. The band released their debut album "Destroying the Fucking Disciples of Christ" (2014) through Horror Pain Gore Death Productions, blending diabolic black metal with 1980s thrash and death metal influences. Their second album "Human Decay" (2021), released on Shinigami Records, featured guest appearances from Dave Ingram of Benediction and André Rod of Brazilian thrashers Attomica.