Joker was caught by surprise when he finds out that Mayor McCaskill is actually Batman in disguise .
At the time of Joker 's bomb threat , Mayor McCaskill is lowered to a pile that the cars of the villain surround .
Joker was caught by surprise when Joker finds out that Mayor Mayor is actually Batman in disguise .
At the time of Joker 's bomb threat , Mayor McCaskill is lowered to a pile that the cars of the villain surround .