Quote Originally Posted by Sword View Post
I have therefore concluded that Reno is the heartless that was created from the original body that also belongs to the nobody named Axel.
Impossible. Sora and Xehanort are the only two people who have ever managed to remain in control after transforming into a heartless instead of becoming a mindless creature craving hearts. This is confirmed in the game.

Though one does have to keep in mind the possibility that Axel created an entirely different name for his nobody self (again just like Xehanort and Xemnas), however there is no evidence to support either of these theories.
Xehanort's name change to Xemnas was a result of changing his name before he cast aside his body and created a heartless and nobody. Xehanort assumed the name Ansem and began impersonating his master. This is made very clear and is very obvious. Xemnas is merely an anagram of Ansem plus an x.

I'm not even going to touch the rest of your "theory."

Edit: Just in case someone decides to nitpick, I'm going to clarify the first point. Sora and Xehanort are the only known examples of the whole heartless-with-a-conscious-mind thing, however you want to describe it. While it is possible that others have done the same thing, I find it highly improbable (so much so that I'm still willing to use the word impossible) that Axel's heartless would be a similar example. As nobodies remember their lives before their seperation from their heart, it's very likely that they all know a great deal about themselves. This would mean that the organization probably knows a lot about the circumstances under which each member was seperated from his or her heart. If Reno was Axel's heartless, the Organization would not have so carelessly overlooked a third example (as they were the ones who confirmed that only Sora and Xehanort have ever achieved it).