Remember the new cutscenes, people! Axel and Roxas talks about Roxas having a heart. Please watch "Remembrance".
Thats just one thing. A theory that i have come up with, is that sora has been cloned, and since roxas is soras BODY, the clone must have looked at him because you cant clone a heart or soul.
Nomura said that Xigbar had witnessed the three knights when he was a student of Ansem, which makes this theory to not work. Although it could've been another person with the armor.
In the picture with the code that says "Master Xehanorts avenger" I cant see much why people think he and the one in "Birth by sleep" looks alike. What if the man in the code picture is Terra and the man in "birth by sleep" is Xehanort?
Otherwise, i liked the theory, you are probably right at many points.
The "goodness" depends of the eyes, every knight has blue eyes, which means they are all pure good. The bald mans eyes are yellow, which means he is "evil" and terras eyes turn yellow and POOF, hes evil.
About the thing that the nobodies are "dancing"... I belive they are trying to catch the hearts because, if its his own heart, they'll become human again.
