hes actually suppose to be a guy that loved the batman serious and his favorite villain was Joker. he became so obsessed with the character he became like him. and some where along those lines he froze in ice on an incident. scientists thought he was dead. when they defrosted him in the labs they found he was still alive though his skin and hair were forever changed. he killed everyone in that lab and people believe that some one broke in and took his body. no one knows who he is any more because every one that did know him was in that lab