I would know more if I wasn't spending my day trying to get you out of the bathroom.

[She tries to stare him down through the door gap, heaving a sigh that feels like a blow from a heater.]

The only thing I've figured out so far is that most of who I've talked to were attacked by a fused pokémon of the same species. Like the arcanine fusion we saw, and the... bat... dog.... you faced. Which means there's a probably a lot of people dealing with this right now.