Stage name of Steve Bier, current keyboard player for Marilyn Manson. Name is an amalgamation of two names: John Wayne Gacy, Jr., a serial killer; and Madonna, the "Queen of Pop". also goes by the nickname "Pogo", which was the serial killer's character when he went to parties as "Pogo the Clown." Normally considered a very quiet person, when asked about the topics of atheism, the Kabbalah, or any other tidbit of random trivia, you can't shut him up.

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