What would be funny is if Batman used Hush. When scarecrow unmasked Batman, he could say, I only look like Bruce Wayne. This guy over here is the real Bruce Wayne. Then Hush would say “I’m not Bruce Wayne. I’m some other guy who broke into Arkham city and killed people to steal parts of their face so I could change my face to look like Bruce Wayne.” And then scarecrow would be like “Do I look like an idiot? You’re not fooling me Bruce Wayne”