Agonize are a Tuzla-based black/death metal band who incorporate melodic black metal into their framework, drawing on the twin lineages of Scandinavian melodic black and the rawer Eastern European underground. Their releases blend melodic tremolo guitar lines with blasting intensity and a darkly atmospheric production that marks them as one of Bosnia's more distinctive extreme metal acts.

Agoria blends black and doom metal from Riihimäki since 2011, creating compositions that shift between blast-beat fury and crushing slowness. Their dual-genre approach spans the extremes of tempo within Finnish underground metal.

Athens' Agos merge black and death metal into compositions of darkened intensity, drawing from the deep well of Greek extreme metal tradition. Active since 2018, they channel both genres' most aggressive elements into a cohesive and punishing sound.

Agrona channels black metal from the Welsh capital of Cardiff since 2017, named after the Celtic goddess of slaughter. Their mythological Welsh inspiration feeds a sound steeped in the darkest traditions of Celtic warfare.

Agruss channels atmospheric post-black, death, and sludge metal from Rivne in northwestern Ukraine since 2012. Their multi-genre approach draws from the vast forests and marshlands of the Volhynian landscape surrounding their city.

Agrypnie are a post-black metal and avant-garde metal band from the Groß-Gerau area of Germany, active since 2006, whose name references the medical condition of persistent sleeplessness. Their extensive catalog, from the 2006 debut F51.4 through the 2018 magnum opus Grenzgænger, spans over an hour of dynamic compositions that shift between fury and melancholy, earning them a devoted following in the European post-black metal scene.

Agun Agoni creates atmospheric black metal from Varese in northwestern Lombardy since 2016. Nestled between Milan and the Swiss border in the lake district, their geographic isolation feeds the contemplative, expansive quality of their atmospheric approach.

Agvares channels black metal from Vladivostok since 2020. Named after the demon Agares from the Ars Goetia, they summon infernal compositions from Russia's Pacific terminus — as far east as the country extends.

Agvirre channels black metal from Manchester since 2019, their name a nod to Werner Herzog's visionary exploration film. Their Mancunian origins feed atmospheric compositions that evoke doomed quests into the unknown.