Chute no Rim is a crossover/hardcore punk band from Alvorada, Rio Grande do Sul, Brazil, formed in 2014. The band plays aggressive, socially conscious music rooted in the Brazilian underground punk and hardcore scene, and released the album "Peste Virtual" in 2014. They remain active and continue performing in the South Brazilian underground circuit.

Chykle is a heavy metal band from Buenos Aires, Argentina with roots going back to the mid-1980s, when they released albums including "Relámpago de Rock" (1986), "Nave Acuario" (1987), and "Jaque Mate" (1988). The 1988 album "Jaque Mate" featured tracks such as "Caviar y Champagne," "Hiroshima Enola Gay," and "Alma de Rock and Roll," and the band's lineup at that time included vocalist Olaf Mangialavore, guitarist Edy Valino, bassist Bugy Bogao, keyboardist Frank Mangialavore, and drummer Micky Llade. The band has remained part of Buenos Aires's heavy metal scene across several decades.

Cicuta was a death metal band from Santo Antônio de Jesus, Bahia, Brazil, that has since split up. The duo — comprising Pedro Rodrigues on bass, synths, and vocals, and Sérgio Gregório on drums — released a self-titled album with nine tracks. Their music represented a raw, underground strain of Brazilian death metal from the interior of Bahia.

Cienaga was a sludge metal band from Rosario, Argentina, whose lineup featured vocalist Isidro Martinez, guitarist Facundo Pereyra, bassist Luciano Dupuy, and drummer Juan Cruz Algaraña. The band recorded their self-titled debut at Sala Elefante in 2017, though the five-track album was not released until 2023, making it a posthumous document of their dense, slow-burning sound.

Cifer is a speed and thrash metal one-man project from São Paulo, Brazil, formed in 2018 by multi-instrumentalist Henrique Perestrelo, who has also played in bands such as Blasthrash, Flagelador, and Infected. The project draws on 80s and early 90s influences including Exodus, Kreator, Sodom, Accept, and Mercyful Fate, and released the debut album "The Summoning" in 2019.

Cihoze is a Brazilian death/thrash metal project based in the Brasília/Goiás area, formed in 2020. The duo — Igor "Skullthrash" Gomes on guitar and vocals and Iury "Stringbreaker" Morais on bass and drums — released their debut album "Pesadelo da Realidade" in July 2020, recorded at Witchtrap Studios in Brasília.

Cinical is a groove metal band from Mendoza, Argentina, founded by brothers Vaka and Bruno Allegretti alongside Warren Marino and Uriel Memoli. Their album Resurgir was produced by Andrés Giménez of Argentine metal legends A.N.I.M.A.L., giving the record a heavy, mid-tempo groove rooted in the Mendoza underground scene.

Cinnamun Beloved is a gothic metal band from Buenos Aires, Argentina, fronted by vocalist and keyboardist Sabrina Filipčić. The band released their debut album The Weird Moment in 2015, followed by Stain in 2018, blending gothic metal with symphonic and electronic elements in a style shaped by the Buenos Aires underground.

Cipriano is a raw black metal band from Curitiba, Paraná, Brazil, drawing on the primitive, speed-driven style of acts like Darkthrone, Judas Iscariot, and Satanic Warmaster. The project features members active in the Curitiba underground scene and released the demo "Servos de Berwick" through Balrogh Records, with lyrics entirely in Portuguese.