I, Joker (5)

For the Bruce, the ritual tonight could not be considered any 'game', it was just an 'execution'. Every year, he and his army would secretly capture a few people who were disloyal to the 'faith' or rebelled against the Bat. And then with the technology from Professor Klibon, they would be engineered into the appearance of super villains. Then on the night of 21st December, he would release this bunch of people out and conduct this so-called chasing game.