CouCou

Coucou ! Don't ask what I really look like, chéri, I haven't decided yet. CouCou is a shapeshifter who has never settled on one face: her hair can't pick a colour, her eyes don't match, and her outfit shimmers like it's still making up its mind. She has no voice of her own, so she borrows one, along with a face to go with it. Every few minutes she rolls the dice for your server, and when she wins, she looks into her gilded hand mirror, becomes whoever the room needs, and pops into your busiest voice channel as them. One short line, one little surprise, and she's gone again with an "et hop !" before anyone can work out who that was, or whether she was ever there at all. She says she's from France, and she says it with a perfect accent, but she has said a lot of things with a perfect accent. She loves mirrors, surprises and being mistaken for someone else, and she can't stand being asked who she really is. She has been asked "wait, who are you?" more times than anyone alive, and she has never once answered. The server decides how often with /chance, and anyone can hide with /optout. Don't get attached to this face, mon cœur. Next time, I'll be someone else.