Hail Satan! Or at the very least King Diamond. The former frontman of the influential metal act Mercyful Fate, and leader of his own self-titled solo project, is an avowed follower of the late Church of Satan founder Anton Lavey, and uses considerable occult imagery in his music and stage shows. His soaring falsetto and grandiose, highly conceptual approach to heavy metal has made the Danish singer a hard-rock icon. In concert, King Diamond appears in make-up reminiscent of Kiss and Alice Cooper, and performs with a cross-shaped microphone made of bones, to name just a couple of his many theatrical trademarks. Diamond re-formed Mercyful Fate in the early 1990s and divides his time between those two bands, in addition to numerous other projects.