Joe Chill is one of the non-playable characters in Lego Dimensions 2: The Rise of Enoch, from the DC Comics franchise.
Not much is known about Joe Chill, except that he appears to be a petty mugger who kills Thomas and Martha Wayne in front of their child, Bruce, while trying to take their money and jewelry. Bruce, unflinchingly glaring at him, begins crying and calling for help. Chill panics and runs from the scene. Bruce would always remember the murderer's face.
He was indirectly responsible for the origin and existence of Batman.