Batman is the alias and second identity of billionaire Bruce Wayne, son of Thomas and Martha Wayne. Becoming the Dark Knight, he dedicated himself to protect Gotham City. Having witnessed his parents' death at the hands of a mugger as a child, Bruce traveled the world as an adult to train and understand the criminal mind in order to combat it. Mentored by Ra's al Ghul, Bruce later returned to Gotham and challenged the city's crime lords, employing unusual weapons and tactics as a mysterious black-garbed crusader. Despite being considered an outlaw by the GCPD, Batman defeated Carmine Falcone and The Scarecrow, and later battled against Ra's al Ghul and his plan to have Gotham tear itself apart through fear.