Impenetrable Darkness is a black metal project from Athens, Greece, active since 2012 and forging dark, aggressive extremity within the Greece black metal scene. The project channels the unrelenting intensity of the genre.

Impenitence is a death metal band from Sofia, Bulgaria, founded in 2007 by Julian, Yasen, and Dimitar, spanning brutal, progressive, and technical death metal approaches. Their 2016 debut Monuments of Contempt is a twelve-track statement of intent across multiple death metal subgenres, released as both digital and CD digipak with a twelve-page booklet.

Death/black metal band from Glasgow, Scotland active since 2018. Their unapologetic name channels extreme metal from Scotland's largest city.

Impera is a black metal band from Frankenberg, Germany, active since 2016, pursuing atmospheric black metal from the small Hessian town. The band crafts dark, immersive compositions rooted in the genre's Northern European traditions.

Technical death metal band from Lancaster in northwestern England, active since 2014. Their sound channels precise, complex death metal from the Lancashire university city.

Imperceptum is an atmospheric black/funeral doom metal band from Bremen, Germany, active since 2016, merging the glacial pace of funeral doom with the frozen hostility of atmospheric black metal. The band creates vast, suffocating compositions from the Hanseatic city on the Weser.

Imperfect World is a deathcore band from Ukraine, active since 2018 and delivering uncompromising extremity through crushing riffs and guttural vocals. The project channels the relentless brutality of the genre.

Imperfection is a groove metal band from Dusseldorf, Germany, formed in 2017, built on chugging, rhythmic heaviness and down-tuned aggression. The band delivers punishing groove metal riffs from the Rhine-Ruhr metropolis.

Imperi de Tenebra is a raw black metal band from Catalonia, Spain, formed in 2025, pursuing lo-fi black metal steeped in darkness. The band's name — Catalan for "Empire of Darkness" — signals their commitment to the genre's most unpolished traditions.