I mean, how many mundies have they really gone up against? Bigby fought some Nazis and then I guess there was that thing where Bluebeard killed that idiot reporter who thought they were vampires*.

*Seriously, blackmailing them STILL would have been suicidal if he was right.

I'm not sure most of them would see Batman coming. I mean, Bigby should because, y'know, WOLF but I think he has good odds against even a badass like Charming.

Honestly I'd much rather see Batman meet Boy Blue is his prime though. Blue would probably be pretty curious about the costume until he finds out it isn't magic.