Defender is a heavy metal and speed metal band from Pfaffikon, Switzerland, forging classic-sounding heavy metal across releases like 'Dying to Live,' 'Beyond Darkness,' and 'Rising High.' Their approach channels the timeless energy of traditional metal with speed metal urgency.

Defenent is a heavy metal band from Finland, with roots stretching back to 1981. As one of the oldest bands in this dataset, they represent the earliest wave of Finnish heavy metal.

Define is a heavy metal band from Valkeala, Finland, formed in 2016. They play defined, riff-driven heavy metal.

Definition of Insanity is a melodic heavy metal band with death metal elements from Bremerhaven, Germany, formed in 2022. They blend heavy metal melody with death metal's extreme edge.

Deformus plays a hybrid of heavy, stoner, and sludge metal from 's-Hertogenbosch in North Brabant, active since 2017. Their genre-blending approach creates deformed, misshapen compositions that refuse to fit neatly into any single category — as their name implies.

Defuze plays heavy/thrash metal from Vila do Conde on Portugal's northern coast, active since 2007 and delivering nearly two decades of explosive, riff-heavy compositions. Their disarming name belies music that detonates with full force.

Dei Umbrae is a heavy metal project from Athens, Greece, founded in summer 2019 by Dimitris Vorgias. Their releases Dark Light, Mora, Archangel, and In the Shadow of God reflect a creative philosophy centered on inspiration and musical chemistry.

Deianeira is a doom and heavy metal solo project from Prague, Czech Republic, driven entirely by multi-instrumentalist Alexander. With releases spanning 'Dominum,' 'Whitechapel,' and 'Anthology of Pain,' the project channels dark, atmospheric heaviness through introspective, melancholic compositions.

Deithesis is a heavy and doom metal band from Louth, Ireland, formed in 2023. The band merge the weight of doom metal with the melodic power of classic heavy metal.