finnaly i found out who the SU is (with the help of a friend)...well here it goes....! the SU is no other than kiaris shell..! there are a couple explanations for this theory......ok sora in KH1 is connected to kairis hearts and still is! So..when he unlocked his heart to get kiaris out in KH1 mayb because kiari in connected to sora mayb the same thing happen to her......the SU has a wonamns body so the only person i could think is kiaris shell...BHK (could) <---key word be soras other half....so when sora unlocked his heart mayb BHK escaped and sora and kiari are connected so mayb the same happened to her as did to sora! ALSO is DD while the SU says to the GEU he looks just liek you a wierd thing happens for only a split second a bunch of words appear, you have to quick fingers to catch this so when u see something like that tell em so its not just me!! In it its says "KIARI WHAT TOOK YOU SO LONG!" so theres a chance there is another sora...that can also be GUE as i think this it could be wrong But the words in DD are not a fake i promise its true!!