The driving force behind Bruce Wayne's crusade as Batman was the tragic murder of his parents, Thomas and Martha. The life-defining moment for one of DC's greatest heroes lead to a series of adaptations of the iconic moment in Batman movies and TV, which is a significant part of the story for most of them. While the name Joe Chill is more often than not assigned to the Wayne murders, there have been a variety of killers over the years. While some were nameless and had no motivation worth mentioning, others were key players in what Bruce would later become.…