Sam and Dean Winchester hear about a bat shaped creature that is terrifying the **** out of the criminal element of Gotham City. Both brothers seemed to be mystified because it doesn't seem to fit the M.O of any monster they've dealt with before, and the closest thing that Sam can find that resembles the description is a demon named Barbathos. Nevertheless, the hunt is on. No outside help. Batman is aware of the nature of hunters, but doesn't know that the Winchester's are after him.
New 52 Batman
Post- Crisis Batman
Arkham universe Batman
Burtonverse Batman
Nolanverse Batman
TAS Batman