Lee was a school kid aspiring to become a member of the Jokerz.
History
Lee attended Hamilton Hill High School, and wanted to be a member of the Jokerz. His initiation day, however, went so horribly wrong that he reneged on his decision.
Scab and Coe were about to initiate Lee when an experimental craft landed nearby. They knocked over the pilots and stole the ship, intending to have fun with it. After picking up some other Jokerz, they took down the T's. Seeing the violent and unforgiving nature of Scab and J-Man, Lee started to doubt his dreams.
Batman attempted to stop the ship, because its reactor was damaged and could explode any minute. After the ship crashed and all the Jokerz and Batman were down, Lee stepped up and shut down the reactor, preventing a disaster. He then threw away the clown's nose he had been given, leaving the Jokerz.
His fate was currently unknown after that.