Do you mean ghost possessing player or NPC? There is not an actual possession but for some ghosts like Bloody Mariam and Weseen Ted's body is not in control if he is caught for sex.
either one, it's a personal thing but I believe a lot of games or media could do more with the idea of ghosts possessing people, but I understand if it's a hard mechanic to implement in gameplay or story, I just wanted to make a suggestion
