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暗黒の王子 /an ko ku no o jou/ is Japanese for 'Prince of Darkness'.
Are you asking about Ozzy Osbourne or Satan?
Biography - 1987 Satan Prince of Darkness was released on:
USA: 21 September 1998
Beltenebros means Prince of Shadows or Prince of Darkness - Maxinister
Kuro na Oji
Which means 'prince of darkness'