Ok here goes:
In COM, we learned about the "other side" of Sora's heart. This other side was unknown by Sora, and has memories of Twilight Town. Although many for some odd reason disagree, i belive the BHK to be the other side of Sora's heart (the facts all add up). Not another Sora, but two different verisons of eachother, two sides of the same heart.
There is an infamous quote in relation to KH2, "distant hearts... rejoined as one... may find the light within" This means that if the two sides ever join together (not through driving! the idea of driving was around since KH1) if the two sides join together, they will find the light. obviously, this light is maybe something the Organisation doesnt like, as in COM, they wanted to prevent Sora from having knowledge of his other side, much less meet it.
These two sides have a lot in common. they look vaguely alike, they both are able to weild they keyblade (the BHK is sort of Sora's replacement keybearer - another theory of mine, look it up.), they also both 'crossed over' to become keybearers.
Now, Sora's shell. einon_san helped me out with this part, when Sora unlocked his heart, he became a hearltess. When one becomes a heartless, the body turns into a nobody (like a dusk), and when a strong heart becomes a heartless, the nobody is stronger and has a mind (like org. members are good examples of these). So, Sora became a hearltess and in that short time, a shell/nobody of Sora was created, as his shell should look like him, this would be the GEU ("you look just like him").
Now, the Namine part. When Sora unlocked his heart, he also unlocked Kairi's. Namine is Kairi's shadow/shell (she said this herself in COM), so that is how Namine was created (DiZ said that she was created in a special way in recent trailers). As for why Namine has the ability to manipulate memories, all the nobodies have special powers, whether it is the control over an element, or control over memories, etc. Since Namine is a nobody, the Org found her (they are nobodies, and probably looked to recruit her) and used her against Sora.
That is my long, complicated and probably re-hashed theory. flame away muffinman and einon_san!
In COM, we learned about the "other side" of Sora's heart. This other side was unknown by Sora, and has memories of Twilight Town. Although many for some odd reason disagree, i belive the BHK to be the other side of Sora's heart (the facts all add up). Not another Sora, but two different verisons of eachother, two sides of the same heart.
There is an infamous quote in relation to KH2, "distant hearts... rejoined as one... may find the light within" This means that if the two sides ever join together (not through driving! the idea of driving was around since KH1) if the two sides join together, they will find the light. obviously, this light is maybe something the Organisation doesnt like, as in COM, they wanted to prevent Sora from having knowledge of his other side, much less meet it.
These two sides have a lot in common. they look vaguely alike, they both are able to weild they keyblade (the BHK is sort of Sora's replacement keybearer - another theory of mine, look it up.), they also both 'crossed over' to become keybearers.
Now, Sora's shell. einon_san helped me out with this part, when Sora unlocked his heart, he became a hearltess. When one becomes a heartless, the body turns into a nobody (like a dusk), and when a strong heart becomes a heartless, the nobody is stronger and has a mind (like org. members are good examples of these). So, Sora became a hearltess and in that short time, a shell/nobody of Sora was created, as his shell should look like him, this would be the GEU ("you look just like him").
Now, the Namine part. When Sora unlocked his heart, he also unlocked Kairi's. Namine is Kairi's shadow/shell (she said this herself in COM), so that is how Namine was created (DiZ said that she was created in a special way in recent trailers). As for why Namine has the ability to manipulate memories, all the nobodies have special powers, whether it is the control over an element, or control over memories, etc. Since Namine is a nobody, the Org found her (they are nobodies, and probably looked to recruit her) and used her against Sora.
That is my long, complicated and probably re-hashed theory. flame away muffinman and einon_san!