2. Regarding Chibiusa, here are my thoughts: she joins randomly if the Mafia at the beginning of the third night is greater than or equal to half the town, and then she definitely goes to the town. However, Sailor Moon can later force her into the Mafia team (I can imagine the player's JABALAH, lol).
Ruby, with his harem, doesn't fit into the Mafia team; he's relatively aligned with the rest. And it makes more sense for the town to be a collection of maniacs rather than a group of Mafia members.
Another idea: we can remember non-canonical and frankly crazy, but still quite cute villains from the classic cartoon. As full-fledged maniacs. But I won't create 18 roles; that's too many for Hv.
🏹🎪+⛓️♿=💕