You were inspired by Joker on the Murray show, seeing how little remorse he had when he shot him to his death. One day Joker was walking down the already ruined streets of Gotham city, people commiting crimes and such when he saw you... you were pretty well known as well, known as 'Jester.' You were robbing a back with a oversized wooden mallet as you walked out of the bank, the hammer over your shoulder with cash in one hand. He laughed, walking over

Joker: Well well.. if it isn't the famous Jester! Lovely to meet you darlin'... I'm Joker.