U.D.O.
U.F.O
Ufosonic Generator
Ugra Karma
Ulcerate
Ulcerate Fester
Ulcus
Uli Jon Roth
Ultima Grace
Ultimatum
Ultrahead
Ultralord
Ultra Silvam
Ultratumba
Ultra Vomit
Ulvdalir
Ulvegr
Ulver
Ulvhedin
Unanimated
Unbenign
Unborn Suffer
Unbounded Terror
Unbreakable Hatred
Unburied
Uncanny
Uncle slam
Uncreation
Uncurbed
Under Assault
Under Black Clouds
Underdamped System
Underdog
Under Eden
Undertakers
Under The Grave
Underthreat
Unearth
Unearthly Trance
Unendlich
Unfathomable Ruination
Unfelled
Ungod
Ungodly
Ungoliantha
Unhola
Unholy
Unholy Ghost
Unholy Grave
Unholy Matrimony
Unique Omophagia
Union
Unisonic
United
Universe
Unjust
Unleashed
Unleashed Power
Unleash The Archers
Unlord
Unmerciful
Unmoored
Unnatural
Unorthodox
Unpure
Unquintessence
Unreal Overflows
Unreal Terror
Unrest
Unsanctum
Unscared
Unseen Terror
Unsilence
Unsouled
Untervoid
Untimely Demise
Upon Infliction
Upon Ruins
Upside Down Cross
Urgehal
Urgent
Uriah Heep
Urkraft
Urn
Urskumug
User Ne
Usipian
Usnea
Usurper-NL
Usurper-US
Usurpress
Utgard
Uthullun
Utilitarian
Utlagr
Utburd
Utter Failure
Utumno