Caballo Salvaje is a heavy rock band from Centenario, Neuquén, Argentina, who describe their sound as "Patagonian heavy rock" for its roots in regional folk alongside raw metal energy. They released their debut album Donde nace el viento in 2014 and followed it with Loncorock in 2017, both recorded in Neuquén. Their material reflects a strong regional identity and social awareness, with themes drawn from Patagonian life woven into hard-driving riffs.

Cabresto was a heavy metal band from Campana, Buenos Aires province, Argentina. The band's lineup included vocalist Emmanuel "NIZ" Echegaray, guitarists Lucas Galarza and Juan Pablo Rodoni, bassist Mario Mansilla, and drummer Leo Graf, with several members connected to the local Campana metal scene through other acts. They released a demo showcasing a direct, traditional heavy metal approach before eventually splitting up.

Cadalso is a progressive heavy metal band from Santiago, Chile. The band released their self-titled debut album in January 2020 through a consortium of labels including ROAR Records, PureSteel Records, Eonian, and Steel Gallery, featuring seven tracks that blend traditional heavy metal with progressive structures.

Caporal is a heavy metal band from Campana, Buenos Aires province, formed in 2016. Their self-titled debut album, released the same year, features eleven tracks including "Navegante", "Las Ruinas Circulares", and "Psicosis", showcasing a traditional heavy metal approach rooted in the Buenos Aires province underground scene.

Cardynal is a heavy metal and hard rock band from Bahía Blanca, Buenos Aires, formed by members Ariel Varas (vocals), Daniel Arévalo (guitar), Gastón Rodríguez (bass), and Guillermo Bertinat (drums). The band released their debut album Intro in 2021, recorded at Estudio Bonus Track in Bahía Blanca, having previously released a self-titled EP in 2019.

Carro Bomba is a heavy metal band from São Paulo, Brazil, known for performing in Portuguese and cultivating a raw, street-level Thrash'n'Roll sound. The band gained recognition with the 2008 album "Nervoso," later cited by Roadie Crew magazine as one of the best releases in Brazilian heavy music history. They continued releasing material through the 2010s and into the 2020s, with their sixth studio album "Migalhas" arriving in 2023.

Carttada is a speed/heavy metal and hard rock band from Curitiba, Paraná, Brazil, born from a project that evolved into its current form by the early 2020s. The band is signed to the label RTR Records and released their debut album "Recharged" in January 2022, recorded and produced by guitarist Aly Fioren at Funds House Studio in Curitiba. Comparisons to Motörhead have followed the band in the Brazilian press.

Causa Mortal is a heavy metal band from Villa Ballester, in the San Martín district of Buenos Aires Province, Argentina, formed in 2013. The band has performed at Argentine metal festivals including events organized by the Unión de Radios Metaleras, where they have played original material such as "Alumbrado, Barrido y Demencia" and "Privado de la Libertad". They represent the active grassroots heavy metal scene that has long flourished in the greater Buenos Aires metropolitan area.

Cavina is a heavy metal band from São Paulo, Brazil, formed in 2014 by brothers Eduardo Cavina (vocals, bass) and Matteus Cavina (guitar). Their self-titled debut EP was released on August 28, 2014, recorded at Estúdio Lamparina in São Paulo, and conceived as the first act of a larger conceptual work exploring themes of society and human civilization.