things about bolaire we know to be absolutely true
Wearing him wreaks havoc on the wearer, although we do not know if he has any control over this whatsoever (cold open where Bolaire breaks free)
Someone can wear him voluntarily, creating a different situation than Bolaire's current setup (the cold open where Bolaire broke free, cooldown for ep 23)
Bolaire does not feed his hosts much, which hastens their demise (ep 19)
Bolaire chooses his targets for consistency of build and, at minimum, being the kind of person who would take a mask off a dead man and have a good look at it (ep 4 cold open, yoinking that crow keeper) (he also did not seem to like either individual but I'm trying to restrict this to actions only)
Things I, personally, know
I love that Bolaire is a Fucked Up Li'l Guy. His continued existence as a relatively independent being relies on him periodically destroying someone's autonomy in pretty much every conceivable way, and that is really rich as a story.
I am absolutely rattling the bars waiting to find out more about his whole deal
