Tony Zucco

From Multiversal Omnipedia

Tony Zucco, the nephew of Arnold Stromwell, was a small-time thug who operated a protection racket. When the circus that the Flying Graysons belonged to refused to pay Zucco, he arranged the Graysons' death, leaving their son Dick- later to become Robin- an orphan. Both Batman and Robin made it their mission to bring him to justice. For years afterward, Zucco became quite paranoid, believing Batman was always after him, to the point that his fellow criminals began to question his sanity. Nine years after his murder of the Graysons, Batman and Robin eventually accomplished their goal and captured him.