Founded in 2015 by vocalist Azi Dahaka, Opus Secretus pursues a Luciferian strand of black metal rooted in ritual atmosphere and occult doctrine. Their 2024 full-length "The Dissolution of the Flesh for the Awakening of the Luciferian Flame" was produced by Thiago Perdurabo and Azi Dahaka, with instrumentals recorded in Magé and vocals laid down at Espaço Lugar Nenhum in Rio de Janeiro.

Opus V bring together seasoned Brazilian heavy metal musicians for a dense, keyboard-driven brand of progressive metal that draws on classic prog and power metal equally. Their 2020 album "Universe of Truths" featured notable guests including Zakk Stevens of Savatage on vocals and Ricardo Confessori of Angra on drums, signaling the band's ambitions well beyond the local scene.

Orate are a stoner/grunge outfit from Santiago, Chile who have been active since 2004, drawing on grunge, indie rock, and stoner influences in their songwriting. They released a self-titled debut in 2004 and returned over a decade later with El Ave Madrina in 2017, an eight-track album that leans into hazy, groove-driven rock with Spanish-language lyrics.

Orate are a stoner/grunge outfit from Santiago, Chile who have been active since 2004, drawing on grunge, indie rock, and stoner influences in their songwriting. They released a self-titled debut in 2004 and returned over a decade later with El Ave Madrina in 2017, an eight-track album that leans into hazy, groove-driven rock with Spanish-language lyrics.

Orbe is a death metal band from Mendoza, Argentina, whose lineup includes vocalist Aníbal González, guitarist Marcos Lovaglio, bassist Carlos Palma, and drummer Fernando Pérez — all veterans of the provincial extreme metal underground since the mid-1990s. The band released their debut album "Invocando Ira" in June 2022, blending old-school death metal with black metal influences and elements drawn from across the metal spectrum. In September 2022 they completed their first international tour of Chile, performing in Santiago, San Antonio, and Quilpué alongside local and Colombian acts.

Orbe Cruciger trade in slow, crushing doom metal with Portuguese-language lyrics that probe the darker reaches of the subconscious, historical myth, and the full spectrum of human cruelty. Their debut album "Idade das Trevas," a nine-track record launched live at the Altar de Ossos event in March 2026, marks an immediate entry point into the Belo Horizonte underground.

Orbis Daemonium weave alchemy, gnosticism, and esoteric poetry into cold, atmospheric black metal, building a body of work that feels more like a grimoire than a standard discography. Across releases including "Opus Contra Naturam" (2019) and "Veil of Illusions" (2022), the quartet of Wellison Xavier, Willie Lawrence, Daniel Alcantara, and Jefferson Barbosa have carved out a consistently hermetic and uncompromising sound.

Founded in the late 1990s by Vega Salruas and Eternal Life, Ordo Natum Bamay Crom have been weaving Viking mythology into raw black metal since their early EP "Crom: God and King" (2002). Their 2019 full-length "Imperium Maximus" showcases the band's layered approach, blending tremolo-driven aggression with folk-tinged atmosphere and violin arrangements. Decades of underground perseverance have made them one of the few Brazilian acts to sustain a genuine Viking black metal vision long-term.

Organismos is a death metal/grindcore band from Medellín, Antioquia, Colombia, active since 2001. The band features members with roots in the Colombian underground scene, including a guitarist who previously played in pioneering Colombian acts Parabellum and Herpes. They have released three full-lengths — "Organismos" (2006), "Manejos Invisibles" (2011), and "Control del Miedo" (2017) — on labels including Me Saco un Ojo Records and Tribulación Productions.