Imperio Nocturno is one of Bolivia’s foundational black metal forces, a long‑running and fiercely underground entity from Cochabamba whose history stretches back to the late 1990s. The band combines melodic black metal roots with later black/heavy metal elements, always framed by themes of Satan, occultism, and ancient mythologies. Their name translates to Nocturnal Empire, a fitting reflection of their dark, ritualistic identity.
The project’s timeline is unusual: it first existed under the earlier name Ninth Circle of Hell, then operated as Imperio Nocturno from 1998 to 2002, went dormant, and was reactivated in 2006, remaining active since. Encyclopaedia Metallum: The Metal Archives
Imperio Nocturno emerged during a formative era for Bolivian black metal, when the scene was still raw, violent, and heavily influenced by early South American extremity. Their early work is steeped in melodic black metal, but over time the band incorporated heavier, more traditional metal elements without abandoning their occult foundation.
The band’s identity is deeply tied to the prolific figure Semiazas, who has been the creative core since 1998. He is also active in numerous other Bolivian underground acts, including Crucifuck, Hellsmoke, MorboMutilador, Ritual de Muerte, Satan’s Flesh, Sepulkhral Pest, Wolfmoon, and others. Encyclopaedia Metallum: The Metal Archives
Imperio Nocturno’s sound has evolved across decades, but several traits remain constant:
Their music often blends tremolo‑driven black metal with mid‑tempo heavy metal structures, creating a hybrid style that remains unique within the Bolivian scene.
The band has seen many musicians pass through its ranks, but the current incarnation is essentially a one‑man project:
Past members include figures from key Bolivian underground bands:
This revolving lineup reflects the interconnected nature of Cochabamba’s extreme metal scene. Encyclopaedia Metallum: The Metal Archives
Imperio Nocturno’s releases document the band’s long and shifting history:
Their discography is spread across demos, compilations, and full‑lengths, reflecting both their longevity and their cult underground status.
Imperio Nocturno is widely regarded as one of the oldest and most influential black metal bands in Bolivia, especially within the Cochabamba scene. Their persistence, extensive network of associated musicians, and commitment to occult themes have made them a reference point for later Bolivian black metal acts.
Their music is described as ferocious, dark, and atmospheric, embodying the essence of South American black metal while maintaining a melodic edge. Viberate.com
| Current | |
| Semiazas | Vocals, Guitars (1998-present), Bass, Drum programming (2022-present) |
| See also: Crucifuck, Hellsmoke, MorboMutilador, Ritual de Muerte, Satan's Flesh, Sepulkhral Pest, Wolfmoon, ex-Necromancy, ex-Bestial Carnage, ex-Hemorragia, ex-Morbid Death Fascination, ex-Putrefaction | |
| Past | |
| Ramses | Bass (?-2020) |
| Wolf SS D. Umbra | Drums (?-2022) |
| See also: Crucifuck, HellSpeed, S.O.S., Sepulkhral Pest, Skulls, Stormblast, Supay, Werewölf, ex-Obfuscator, ex-Wolfmoon | |
| Zaebos | Drums (1998-1999) |
| See also: ex-Maleficencia | |
| Satanael | Guitars (rhythm)Â (1998-1999) |
| See also: ex-Bestial Holocaust | |
| Santi Oráculo | Bass (1999-?) |
| See also: ex-Black Mass Legacy | |
| Servant of Darkness | Drums (2006-2018) |
| See also: Hellsmoke, Satan's Flesh, ex-Crucifuck | |
| Chugo Chugo | Drums (2018-?) |
| See also:Â MorboMutilador, ex-Apoptosis | |
| Past (Live) | |
| Santi Oráculo | Bass (1999-2001) |
| See also: ex-Black Mass Legacy | |
| JAP | Drums (1999-2001) |
| Opus “ Tem Ohp Abk | Demo | 1999 | Â |
| Opus Tem Ohp Ab | Compilation | 2011 | Â |
| Re-invocando el pasado 1999-2002 | Compilation | 2013 | Â |
| El ocaso de los tiempos | Full-length | 2014 | Â |
| La coronaciĂłn de la serpiente | Full-length | 2019 | Â |
| 1999-2001 | Compilation | 2020 |