Dr. Arnold Klein is a dermatologist and the biological father of Michael Jackson's children. He treated the pop star and was actually the former boss of Jackson's wife, Debbie Rowe.

After Jackson's untimely death in June 2009 it was revealed he was not the biological parent of Prince Michael I or II, or Paris.

The sperm was provided by Arnold Klein.

What this means for Arnold Klein and the custody of the children at this point remains to be seen, but it is quite a revelation.