A paranoid delusional schizophrenic? He was an eye witness to his parents murder. Why didn't he try to charge Jack the Joker with their murder in court first. Did he just assume Gotham was corrupt already. He basically created the Joker by forcing him to defend himself of Batman's revenge wreaking havok on Gothem in the process. He lived in a cave, was definately eccentric or accentric, antisocial and had mental problems and issues, which justified or not were handled wrongly. He lived in a cave and dressed like a bat.