Former Kiss guitarist Mark St. John died Thursday from an apparent brain hemorrhage. He was 51.

Born Mark Norton in Hollywood, St. John was Kiss' third official guitarist, having replaced Vinnie Vincent -- the substitute for Ace Frehley -- in 1984

By this point, Kiss had done away with its trademark makeup and costumes, but the group was enjoying a career renaissance. The lone Kiss album on which St. John appeared, "Animalize," re-established the group as one of the world's top arena metal bands. The album spawned the popular MTV video, "Heaven's on Fire" (the only Kiss video to feature St. John).

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