Calibre 38 is a hardcore punk and crossover thrash band from Santiago, Chile that has been active since 2002, building a consistent discography across albums including Bombardeados (2002), Gritos de Guerra (2006), Perseverancia (2008), Balas Tras Sus Almas (2016), and Nosotros Contra Nosotros (2018). Their music blends aggressive hardcore punk with thrash and metalcore influences, delivered through socially charged lyrics addressing themes of conflict and anti-capitalism.

Calibre 38 is a hardcore punk and crossover thrash band from Santiago, Chile that has been active since 2002, building a consistent discography across albums including Bombardeados (2002), Gritos de Guerra (2006), Perseverancia (2008), Balas Tras Sus Almas (2016), and Nosotros Contra Nosotros (2018). Their music blends aggressive hardcore punk with thrash and metalcore influences, delivered through socially charged lyrics addressing themes of conflict and anti-capitalism.

Caligo is a stoner/doom/sludge metal band from Brasília, Brazil, formed around 2012 by bassist Sandro Santos alongside musicians from other local acts including Death Slam, Terror Revolucionário, Isolate, and I.T.D. Their sound draws heavily on classic doom forebears such as Black Sabbath, Cathedral, Saint Vitus, Pentagram, and Candlemass, and some of their compositions incorporate poetry by Brazilian writer Augusto dos Anjos. The band has released a demo titled “Templo da Descrença” and the single “Monstro Manto,” and members have also contributed to the doom metal supergroup Summa.

Callamity is a heavy/thrash metal band from Rio de Janeiro, Brazil, founded in 2014. The band blends the Bay Area thrash style with influences from the German and Brazilian thrash schools, alongside broader metal and rock influences. They are an independent act currently active in the Brazilian underground metal scene.

Callix Aureus is a one-person depressive black and doom metal project from Brasília, Brazil, created by musician Maycon Moura. The project blends atmospheric black metal with depressive suicidal black metal (DSBM) and doom, creating mournful, snow-buried soundscapes with lacerated vocals. Releases include “Pale Suicide (DSBM)” (2025), “Mechanical Respiration,” “Glass Tears,” “Chronica Funesta,” and “Kyrie Dolor.”

Calvario is a groove metal and metalcore band from Ituzaingo, Buenos Aires, Argentina, active since 2016. The band self-released their debut self-titled album through their Bandcamp page, establishing a heavy, riff-driven sound that sits between the rhythmic punch of groove metal and the aggressive structures of metalcore. They remain an active presence in the Buenos Aires underground metal circuit.

Calvário is a heavy/doom metal band from Carapicuíba, São Paulo, Brazil, originally formed in 1990 under the name Calvary. The band holds the distinction of being the first Brazilian Christian metal act to release a full-length album, and has been active across several periods since their founding, currently signed to Blood & Iron Records. They were featured in the Brazilian metal fanzine U’loco as early as 1991, cementing their place as pioneers of Christian heavy metal in Brazil.

Camembert was a thrash metal band from Buenos Aires, Argentina, operating as an independent act in the 1990s Argentine thrash underground. The band evolved from an earlier project called Lacrimosa and contributed the track "El corazón" to the 2000 compilation Hermandad metálica vol. 2, one of the key documents of the Buenos Aires thrash scene of that era. They later split up, leaving a modest but documented footprint in the local extreme metal archive.

Campo Minado is a thrash/crossover hardcore band from the Recife/Olinda area of Pernambuco, Brazil, active since 1998. The band’s lineup of Adriano (vocals), Markelly (guitar), D’Angelo (bass), and Marcelo (drums) has released a self-titled debut album (2001), the EP “Curto e Grosso” (2013), and the album “Extinção” (2016), delivering aggressive, politically charged thrash with a hardcore edge.