Robin (Real Name Richard "Dick" Grayson) is the sidekick of the famed hero, Batman. He was the first sidekick to a superhero, and he began fighting crime when he was nine-years-old.
He grew up in Haly's Circus, and he was an acrobat alongside his parents. Before one of their acts, a crime lord sabotaged their act and they fell to their deaths. Batman allowed Robin to take up crime fighting to help him bring the people responsible for their deaths to justice.