Are Chibi-Usa and Chibi-Chibi the same person?
No, they are two entirely different people. Although their names are incredibly similar and they both have pink(ish) hair, their very different. Chibi-Usa is Usagi’s future daughter, while Chibi-Chibi is Sailor Galaxia’s starseed. Go to the profile page if your still confused, hopefully it’ll clear things up.