I also have another theory.I believe Ansem is the heartless of MX, and Xemnas is the Nobody of Terra, since Ansem and Xemnas and two different seperate goals. If you look at it, it seems Ansem took to the goals of MX, and Xemnas looking for Terra's friends. If what I am saying is slightly confusing about Xemnas, look at my theory (titled Xemnas a heart?) to clear things up. Also I took notice how Ansem looks more like MX and Xemnas looks more like Terra. Please tell me if this theory makes any sense.

It makes scenes yeah.

Ansem is more like MX because Ansem is MX's heart and Xemnas is more like Terra but has some parts of MX in him too

I also have another theory.I believe Ansem is the heartless of MX, and Xemnas is the Nobody of Terra, since Ansem and Xemnas and two different seperate goals. If you look at it, it seems Ansem took to the goals of MX, and Xemnas looking for Terra's friends. If what I am saying is slightly confusing about Xemnas, look at my theory (titled Xemnas a heart?) to clear things up. Also I took notice how Ansem looks more like MX and Xemnas looks more like Terra. Please tell me if this theory makes any sense.

 

It makes sense. I was thinking about that the other day.

ansem is xehanorts heartless

Ansem is Xehanorts heartless, but Xehanort is technically two people in one body.