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.

Orgasmo de Porco bring the chaotic spirit of 1980s American crossover to a distinctly Brazilian underground setting, with Caverna's barked vocals riding atop the palm-muted thrashing of Paulinho and the locked-in rhythm section of Lobo and De Cia. Their 2013 debut "My Mind is a Mess" established their irreverent, full-throttle approach, and 2018's "Voltamos mijados e putos" — later named a Bandcamp Album of the Day — proved they only got tighter with time. Released through Läjä Records and Cianeto Discos, their records sit comfortably alongside classic D.R.I. and Municipal Waste without ever sounding derivative.

Orgia Nuclear cook up a volatile mix of speed metal ferocity, thrash riffing, and black-crust grime, having honed their sound from the early "Caos Total" EP (2013) through to the full-length "Desgastado" (2018), recorded at Darkside Studio in Recife. Sung entirely in Portuguese, their lyrics take aim at social and political targets while the music charges forward with metalpunk urgency. Their split releases and active underground presence reflect a band more interested in raw energy than studio polish.

A duo of Sodomizer and Sancta Fêmea, Orgiastic Perversion channel raw and depressive black metal into an uncompromising catalog of transgressive imagery and suffocating atmosphere. Their output spans from the debut "Ritual de Luxúria Sob a Luz da Lua Cheia" (2015) through "Ninfomaníacas e Sádicas" (2020) and "Obsessiva Volúpia da Transgressão" (2022), each release sinking deeper into themes of desire, darkness, and anti-cosmic philosophy. The dense, lo-fi production is entirely intentional — a wall of noise that feels less recorded than summoned.

Orgonite is the solo project of Théo "Desgraçócrates" Luna-Marques, a one-man endeavor where blackened riffing meets traditional heavy metal structure in a grim but melodically aware package. The debut "Caos Interior," released through Gigachad Records, handles composition, performance, and artwork entirely in-house, establishing a distinctive DIY identity in the blackened heavy metal underground. The project draws from first-wave black metal and occult heavy metal equally, refusing to settle in either camp.