Quote Originally Posted by Ouch!
The lighter coloured Heartless look-alikes, as far as I know, have been named the Dusk, not Nobodies, which refers to the Unknowns as you mentioned, or the "non-existant ones" as the quote from Deep Dive: Another Side, Another Story calls them. "Who is Nobody? They are the non-existant ones." That would leave me to believe that the Unknowns aren't complete. As the Enigmatic Man says in Final Mix they are just mere shells. To me, that seems to be a blaring sign that they have no heart. Perhaps they're just bodies without a heart, which would explain why Ansem's body is part of the Organization.

I also wouldn't rule out the possibility that DiZ is Ansem's body. When Riku finally recognized that DiZ was not Ansem after he embraced the darkness he commented that DiZ smelled very similar to Ansem but he could tell the difference.

As far as 13 members of the Organization would go, that'd make sense with the allusions to the Thirteenth Order.

I also think it's blaringly obvious that the other playable character that Square Enix mentioned is the BHK.
You're right, they are called Dusk, my mistake . Im noticing that Dusk appear in the place Riku called dawn. DiZ called the road leading to twilight (or twilight town that riku and the king followed between light and dark) the path to Dusk I think and Riku told him it would lead to Dawn.
You have the translations of the unknown from Final Mix? Can I see it? Was Ansems body mentioned in the tranlslations and is his body definitely with the unknowns? In the attatchment in the last post it mentioned something about ENDLESS in caps lock and I think they sound similar to Heartless and Dusk.