Billy (Dark Heart)
Species: Human
Hair: Black
Eyes: Black
Voiced by: Michael Beach (uncredited)

Billy was a mountaineer from Nevada.


Billy took his girlfriend to climb a mesa near Goldhanger, Nevada. She was not impressed, even less when he said the only thing he picked that particular mesa for was the view. She promised to dump him as soon as they got down, but maybe she didn't mean it. Billy actually never came home. He reached the top before his girlfriend, and when she arrived, she only found his shoe and an alien machine.


Justice League Unlimited