Defectomy is a Swiss brutal death metal act formed in 2023, specializing in the most punishing corner of the death metal spectrum. Their surgical name implies precision cutting, and their sound delivers exactly that — methodical brutality executed with clinical efficiency.

Defector is a progressive death metal band from Siegen, Germany, formed in 2018. They channel death metal through progressive structures and adventurous songwriting.

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.

Formed in Overpelt, Limburg in 2018, Defenestration deliver slamming death metal with a pronounced deathcore edge, built around crushing breakdowns and intricate transitions that preserve dynamics within their brutal framework. Their 2019 debut full-length Scalped on the Pavement, released through Justified Insanity Records, introduced the quartet's bone-crushing approach to the Belgian extreme metal scene.

Deferum Sacrum is a black metal band from Kyiv, Ukraine, formed in 2011. The project delivers dark and ritualistic black metal from the Ukrainian capital.

Defiance is a crossover/thrash metal band from Caen, France, formed in 2021. They defy with energetic crossover thrash from Normandy.

Defiant Cult is a Veronese thrash/groove metal band active since 2017, blending the relentless riffing of thrash with groove metal's rhythmic swagger. Their name suggests a rebellious streak that manifests in aggressive, fist-pumping anthems built for live performance.

Defiatory is a thrash metal band from Umea, Sweden, formed in 2016. The project delivers aggressive thrash metal from northern Sweden.