Hi KH fans! This is my first post in this section. I have seen other post about this topic, but the most likely options weren't discussed very much IMO. I strongly believe Sora will be the only protagonist of KH3, but when I say that I don't think it's unlikely that another character is possible... I think Young Master Xehanort's character (YMX) will be explored in an introduction/tutorial, as Roxas was in KH2. Square Enix has made it very clear that KH3's story belongs to Sora, so I don't believe they will pull a BBS or DDD on us with switching characters. I think Square also intends for there to be a pity party for MX, so at the end we feel (at least a little bit) sad for him. I think it's also possible to see YMX's story through the eyes of Young Eraqus. My reasoning for both of these characters is the chess cutscene we saw at E3. Let me know how you feel and what your theories are! Many have said Kairi or Lea, but I think Square wants to add more to MX's story/past and the best way to do that is by experiencing it ourselves.
Sincerely, Fox (Maverick-flame)
Sincerely, Fox (Maverick-flame)