High Quality Content by WIKIPEDIA articles! Kim Bendix Petersen (born June 14, 1956), better known by his stage name King Diamond, is a Grammy Award nominated Danish heavy metal musician. As a vocalist, he is known for his extensive vocal range, in particular his usage of falsetto. He is the lead vocalist for both Mercyful Fate and the eponymous King Diamond. In 2006, Hit Parader voted him as the 85th greatest heavy metal vocalist of all time.