In the 90s, the Elseworlds superhero stories were all the rage. Steve Englehart had an idea for Hamlet as Batman that was never published, but he shares a synopsis with IO9.

Alone in a deserted turret of the castle, Hamlet calls himself a coward and berates himself. The Jester comes and talks with him, advising him to take his adoption of a false persona a step farther. If he, Hamlet, can’t make himself act, why not “become” a man dedicated to action? “They’ll still know who I am,” complains Hamlet. Then why not wear a mask? Something designed to show those who encounter you that you’re no one to be trifled with? Something to strike fear in their hearts! At that moment, a bat flies through the turret window. And so is born…the idea for the Bat-man.