Fan Casting Batman - Legend of the night

At age 8 billionaire Bruce Wayne sees his parents Tomas and Martha Wayne shot and killed in front of him and decides to go around the world to train to become a superhero, years later Bruce is now 19 years old having completed his training and after a Bat flies into his window he becomes Batman and after hearing about a mob of criminals goes to the Gotham Science Center where he drops one of the gangs head killers into a vat of chemicals turning him into the Joker, so Batman must stop the Joker from taking over the city with a new gang of criminals and must also stop another new Supervillain, a thief named Catwoman