Ok if haven't played KH 3Ds don't read (altough this question is just speculation)
Anyway I recently started a KH 2 save and came to the 2nd Demnyx battle and just realized he said "oh we too have hearts"(or something like that :/ ) Could this mean he might be one of the thirteen darknesses since he might know the truth? Honestly I'd be surprised but maybe he was actually lazy because he did tons of background work. Any thoughts? Should I place bets like Demnyx=13 D as Tobi=Obito??