Historical Examples. 1  He had discarded his first instinct, which was to hide in the intricate Tetrahyde cloaca. 2  A perforation leading into the cloaca at the hind end of this. 3  Agrippa, who cleaned out the cloaca, navigated its whole length in a boat.
Batman is the superhero protector of Gotham City, a man dressed like a bat who fights against evil and strikes terror into the hearts of criminals everywhere. In his secret identity he is Bruce Wayne, billionaire industrialist and notorious playboy.
Commenter Lee points out one of the more famous secret identity reveals in the Batman canon: Joe Chill from Batman #47 (June-July 1948): But when he tells a few other crooks that he's the reason Batman took up the cowl, they murder him, only belatedly realizing that he could have told them Batman's real identity.