Well, this theory is actually related to the Lingering Sentiment, the secret boss of Kingdom Hearts II Final Mix.
Terra, in fact, becomes Master Xehanort's apprentice, and the "Terra" seen fighting alongside Aqua and Ven is the Lingering Sentiment, created when Terra succumbed to the darkness. You know, this would make sense if Master Xehanort referred to Terra as "a monster infused with darkness" and begging the Sentiment to "correct his mistake" by killing Terra, and if the Sentiment were demanding to know what Master Xehanort had done with Terra's heart. Well, this would explain why the Sentiment had nothing but hatred for Master Xehanort! (Referring to M.X. doing this to Terra.) Also, in the 2009 Tokyo Game Show trailer, M. Xehanort's student said to Ven that "Terra is no longer Terra". But, I still don't think this theory makes any sense. Any questions? :35:
Terra, in fact, becomes Master Xehanort's apprentice, and the "Terra" seen fighting alongside Aqua and Ven is the Lingering Sentiment, created when Terra succumbed to the darkness. You know, this would make sense if Master Xehanort referred to Terra as "a monster infused with darkness" and begging the Sentiment to "correct his mistake" by killing Terra, and if the Sentiment were demanding to know what Master Xehanort had done with Terra's heart. Well, this would explain why the Sentiment had nothing but hatred for Master Xehanort! (Referring to M.X. doing this to Terra.) Also, in the 2009 Tokyo Game Show trailer, M. Xehanort's student said to Ven that "Terra is no longer Terra". But, I still don't think this theory makes any sense. Any questions? :35: