Born one year apart in separate DC Comics, Batman and Superman become cultural touchstones across the globe, embraced by generations of fans through years of real-world social and political change. One superhero orphaned by crime, the other by a dying planet. One is shaped by his thirst for vengeance, the other by the values of his human family. Their legends have fuelled adaptations in almost every new medium, including landmark graphic novels and more than a dozen movies between them, but never have the pair faced off against each other. Until now…