ok
this may make no sense and is probably way of what will/actually happen but this is my theory anyway
whan riku turned to darkness he became stronger than sora , except it made his heart weak, so then when sora took back his keyblade after riku had stolen it , he ran away wondering why he was weaker.
then in that giant corridor he meets what is some sort of heartless ghost type thing , which then turns out to be XH.
after sora gives his 17th dodgy inspirational speech and destroys XH, Riku dissapears too. he then reapears as his normal self and locks himself on the other side of the door.
he is then bothered by XH telling him to go to the darkside all through RE:CoM and i presume for a fair bit in 358 days aswell.
anyway we all knew that so now i'll get to the actual theory
i think that in that cutscene where riku captures roxas , by turning into what is pretty much XH , because he was completely volunteering to the darkness on his own and not deciding because of anger or hate like in KH1 , he matched the same qualities as a real heartless, thus producing a nobody.
this nobody could be anyone in the organization, another random human-like nobody or somebody completely diffrent.
Axel would be the number one contender until who his orriginal self is revield.
i will just remind you that this is a theory , or some people may call it a fanfic and like i said it will pobably be wrong
correct me where im wrong
this may make no sense and is probably way of what will/actually happen but this is my theory anyway
whan riku turned to darkness he became stronger than sora , except it made his heart weak, so then when sora took back his keyblade after riku had stolen it , he ran away wondering why he was weaker.
then in that giant corridor he meets what is some sort of heartless ghost type thing , which then turns out to be XH.
after sora gives his 17th dodgy inspirational speech and destroys XH, Riku dissapears too. he then reapears as his normal self and locks himself on the other side of the door.
he is then bothered by XH telling him to go to the darkside all through RE:CoM and i presume for a fair bit in 358 days aswell.
anyway we all knew that so now i'll get to the actual theory
i think that in that cutscene where riku captures roxas , by turning into what is pretty much XH , because he was completely volunteering to the darkness on his own and not deciding because of anger or hate like in KH1 , he matched the same qualities as a real heartless, thus producing a nobody.
this nobody could be anyone in the organization, another random human-like nobody or somebody completely diffrent.
Axel would be the number one contender until who his orriginal self is revield.
i will just remind you that this is a theory , or some people may call it a fanfic and like i said it will pobably be wrong
correct me where im wrong