Cefem is a heavy metal band from Casilda, Santa Fe, Argentina, that released three recordings in quick succession: the album Historias Oscuras in April 2016, Pateando con el Rock n' Roll in September 2016, and Rictus Umbrio in November 2017. Their lyrical themes draw on myths, urban legends, and ancient literary sources, lending their straightforward heavy metal a distinctly eerie character. Tracks like "La Hija Malvada" and "El Farol del Diablo" from Rictus Umbrio showcase the band's appetite for dark storytelling within a classic Argentine metal framework.

Christian Alejandro is an instrumental progressive metal solo project from Coquimbo, Chile, whose debut EP "Per Seculum Seculorum" (2010) introduced five tracks of self-described "Instrumental Epic Prog Metal." The project's 2023 album "G.NEM" expanded the approach into a ten-chapter conceptual work featuring guest soloists and a closing title track that runs over sixteen minutes.

Chronicode is a heavy metal band from Rio de Janeiro, Brazil, formed in 2016 and currently on hold. The band features a lineup including vocalist Mariana Figueiredo and guitarists Julia Pombo and Celo Oliveira, and operated as an independent act with themes centered on fighting spirit, personal change, and the consequences of wrongdoing.

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.

Circadia is a heavy metal and hard rock band from Catriel, Río Negro, Argentina, drawing on classic 1980s and 1990s metal influences. The band has released recordings including the singles Leonidas and the EP Sucesos, building a following in the Patagonian underground metal scene.

Clenched Fist is a heavy metal band from the Jardim São Luís neighborhood in the south zone of São Paulo, Brazil. Drawing influence from classic 1970s and 1980s acts including Black Sabbath, Iron Maiden, and Dio, the band plays heavy/speed metal with lyrical themes touching on society and medieval imagery. They have released the albums "Homenagem aos Bravos" (2008) and "O Presente da Morte" (2012) and are signed to Infernö Records.

Corsário is a heavy metal and progressive metal band from Belém, Pará, Brazil, formed in 2016. The band describes itself as "Heavy/Prog da Amazônia para o Mundo" (Heavy/Prog from the Amazon to the World), blending traditional heavy metal with progressive elements rooted in the Amazon region's musical identity. They remain active and release music through Bandcamp.

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.

Craft Sword is a traditional heavy metal band from Buenos Aires formed by Johan, also known from the bands Interceptor and Abomine, alongside vocalist Poli Serafini of Bulletproof — the project wears its NWOBHM and epic metal influences openly, citing Manilla Road, Omen, and Blitzkrieg as touchstones. They released their debut EP "The Furious The Savage The Wild" in February 2021, followed by the eight-track album "Hyborian Age" in September 2022, both drawing heavily on sword-and-sorcery themes.