Madonna Wayne Gacy

Stephen Gregory Bier Jr. (born March 6, 1964), formerly known by his stage name Madonna Wayne Gacy and by the nickname Pogo (John Wayne Gacy's clown name), is an American musician who was the keyboard player for Marilyn Manson from 1989 to 2007. His stage name came from the names of the singer Madonna and the serial killer John Wayne Gacy.
Personal life.
Stephen Bier was born in Fort Lauderdale, Florida to a Jewish father and Catholic mother. He earned a degree in engineering from the University of Florida.
Career.
Bier attended college for six years and sought a job at NASA but decided he wanted to be in a band with Brian Warner. 
He joined Marilyn Manson in late 1989 as a live prop actor after Zsa Zsa Speck left the band. Bier has played the following instruments on Marilyn Manson's albums, including 
He is responsible for much of the Kabbalic and numerological meanings behind Manson's albums. He did not contribute to Manson's album "Eat Me, Drink Me", having been replaced by Chris Vrenna.
On August 2, 2007, it was reported that Bier filed a lawsuit against Manson for unpaid "partnership proceeds". Bier claims Manson spent the band's earnings on "sick and disturbing purchases of Nazi memorabilia and taxidermy (including the skeleton of a young Chinese girl)" and on various other luxurious items. Bier claimed that Manson "devised a campaign to drive Bier out of the band and rob him of his entitlement".
On December 19, 2007, Manson filed a counter suit against Bier, accusing him of breach of contract. According to metalunderground.com, the lawsuit was settled for a sum far less than what was originally sought by Bier with the total being $380,000. $175,000 was paid out by Marilyn Manson while the rest was ordered to be paid by Stephen Bier's former business managers.