Batman is setup as a character,
The Batmobile is setup as a pawn
The roads and buildings are setup as static meshes/actors
The things batman interacts with are actors
The Sliding Door to get into the GCPD station is a actor
Enemies…if they are a character…are a character. If they are a vehicle or something else would usually be a pawn. Maybe if you’re making something like a static turret and you dont need all the functionality of a pawn you could use an actor