Okay so on Fear Itself I established that Klaus can see the previous hosts. My question now is whether he'd be able to use his summoning ability on them, and if so, what could they do in the way of helping fight? I doubt it'll be very powerful or anything, because Klaus still has no idea how his powers actually work but it'd be neat to have him have one badass moment before he gets his ass kicked.

ETA: Just wanted to also ask if other characters in the game happen to have useful ghosts following them around (that aren't appable characters but are canon) if Klaus could try summoning them.