Cristo is a groove/death/thrash metal band from Río Cuarto, Córdoba, Argentina, formed in 2023. The band released a self-titled EP available on their Bandcamp page, carving out a heavy, riff-driven sound within the Córdoba metal scene.

Cristobal Gallardo is a Chilean guitarist who launched his solo instrumental metal project in 2023 with the single "Maldita Tentación," followed by his debut album "A Puro Corazón" in 2024. His playing blends metal technique with Latin melodic influences, citing Marty Friedman, Gary Moore, and Carlos Santana as primary inspirations.

Critical Fear is a thrash metal band from Iracemápolis, São Paulo, Brazil, formed in 2008–2009. Signed to Thrash or Death Records, the band focuses on political and social themes and has released multiple records including Conflicts (2011), Alone (2016), and A Real Danger (2022).

Critical Mass is a thrash metal band from São Paulo, Brazil, originally formed in 1989 under the name Sarcastik before adopting their current name, drawing influence from acts like Metallica, Testament, and Nuclear Assault. After nearly three decades of dormancy during which their early material remained unreleased, the band returned to resurrect compositions written between 1990 and 1994. In 2025 they released their debut EP "The Feast" on streaming platforms and in a limited CD edition, marking their long-awaited comeback to the São Paulo underground scene.

Critical Terror is a thrash/death metal band from Bogotá, Colombia, formed in 2021. Drawing on themes of anti-religion and Colombian history, they released their debut demo "Renace el Terror" that same year.

Cron Demom is a one-man atmospheric black metal and ambient project from Goiânia, Brazil, created and performed entirely by Alexander Massaini. The project blends atmospheric black metal, DSBM, funeral doom, and ambient influences into a dark, melancholic sound. Cron Demom released its debut album "Satan's Lies" in August 2019 and has since maintained an active presence on Bandcamp with multiple releases.

Cronos N.T. is a death metal band from São Paulo, Brazil, active since 2018. The band released the single "Last Medjai" in October 2020, a track drawing inspiration from the Assassin's Creed Origins character Bayek, previewing their album "Acto Omega". They operate as an independent act within the São Paulo underground metal scene.

Crookhead is a progressive death metal band from Araraquara, São Paulo, Brazil, formed in 2016. The band operates as an independent act and maintains profiles on Bandcamp and SoundCloud where their material is available. They are part of the growing progressive extreme metal underground scene in the interior of São Paulo state.

Crossfear is a melodic death metal and metalcore band from Santo André, São Paulo, Brazil, formed in 2012. The band released their debut EP "Survive Through Fear" on October 10, 2012, a four-track release recorded at Estúdio Magma featuring tracks such as "Compromise," "War of Ideals," and "Scars of Life." They have continued as an independent act within the ABC Paulista region's metal underground.