hmm... Heliodor is new enough that they don't really know any Personae. I'm tempted to say Automaton just because she didn't electrocute them and could keep Church in good repair! I think that may actually be the most positive experience they've had with a persona, too.

UM SAPPHIRE is probably most likely to adopt a Persona who seems to NEED ASSISTANCE rather than one that they get along with... I know Red is helping Three out... so...

But I am pretty sure Apple at least would try to smack people around if Sapphire tried to adopt a Persona.

I like this question! Reverse?