Deceiver Legion plays black metal from Oulu, active since 2020 and channeling the frozen darkness of northern Finland into deceptive, atmospheric compositions. Their military-formation name suggests organized aggression — black metal as coordinated assault.

December Flower is a melodic black/death metal band from Diepholz, Germany, active since 2008. They blend the darkness of black metal with melodic death metal's emotional resonance.

December Moon is a symphonic/melodic black metal band from Ipswich, England, emerging in 2025. They deliver cold, symphonic black metal from East Anglia.

Decepti is a black metal band from Ostergotland, Sweden, formed in 2018. The project channels dark black metal.

Decima is a black metal band from Lyon, France, formed in 2019. They deliver measured black metal from southeastern France.

Decimated Cross is a black metal band from Tamworth, England, formed in 2019. They deliver crucifying black metal from the Staffordshire heartland.

Decipher is a black/death metal band from Athens, Greece, formed in 2023, featuring guitarist-vocalist Kostas Gerochristos (Lucifer's Child), bassist Kostas Ragiadakos (Dephosphorus), and drummer Nodas Chatzopoulos. Their 2026 album Thelema, released through Transcending Obscurity Records, delivers steely, riff-focused black metal with melodic undertones across seven tracks.

Deciphered plays symphonic black/death metal from Dimitrovgrad in Ulyanovsk Oblast, active since 2017. Their code-breaking name suits music that layers orchestral complexity over extreme metal, creating compositions that reward repeated decoding.

Formed in June 2014 in Zwijndrecht, Declared Dead play blackened death-thrash with progressive death 'n' roll sensibilities, blending the extremity of black and death metal with the punch of thrash. Their prolific output — over a dozen releases including the 2016 debut Denounced and Defiled and the 2024 album Necrodeist on Sliptrick Records — showcases macabre lyrical themes and a relentless work ethic.