Bruce Wayne witnessed his parents' murder as a child, inspiring him to wage a war on crime. He trained extensively to become Batman, establishing a secret headquarters and using fear and advanced technology to strike terror in criminals as a dark knight protecting Gotham. He later took in Dick Grayson, whose parents were killed, training him to become Robin and his crime-fighting partner. When Jason Todd also became the second Robin, he was brutally beaten by the Joker and died trying to save his mother.