Leto's Joker... Greta Marie James has the usual sob story. Parents died, she got kidnapped... All that. Oh and don't call her a good guy because she isn't. Not even close. She finally found the man that kidnapped and abused her until she was 18 and he was in Gotham City. She needs someone to help her take him down... Someone who will get something out of it too. Someone like the Joker. The only problem with that is the little crush she developed.