Hello everyone, was browsing online and came across this post. I'm new here but thought this would be a good place to put a theory I've been thinking about.
It seems to me that when someone is split into a Heartless and a Nobody that if their heart was strong only one form would inherit that power, for example, when Sora became a Heartless he was the weakest type, yet Roxxas was among the most if not the most powerful of the Nobodies.
However we never see heartless versions of any of the Organization save for Xehanort's, who also called itself Ansem. I have come to believe that Xehanort may have corrupted Ansem's Heartless and that same taint was passed to Riku (which would also explain why Riku took that form when he unleashed his darkness). The reason he corrupted Ansem's heartless would have been to give it the same lust for power that he had so it would go after hearts more fervently, thus allowing him to construct Kingdom Hearts faster.
This would imply that Diz/Ansem is in fact a Nobody himself, I think he may have been one of the lesser Nobodies and was saved by Mickey in a similar fashion to how Sora was saved by Kairi (please no Mickey/Diz pics... ever)
Now to take this post back on topic, I think that Riku's Nobody would be one of that trash Nobodies that you first fight, but that Riku's Heartless would be even more powerful then Xehanort/Ansem's.
For the record this is my first time visiting a forum and i dont know whether this has already been disproven or is even a valid theory, My kh experience is limited to 1,2 and chains(original).
