Bruce Wayne is a millionaire who at the age of 8 during a robbery, his parents were shot and killed, and Bruce could not do anything, and this made Bruce grow an internal hatred that when he turned 19 he was trained by a group of known ninjas as "the League of Assassins" for 5 years, until he returned to Gotham City where he created a special suit using a bat as a symbol, and created various gadgets to fight crime and prevent things like what happened in his past from happening again with other people.
