This one isn't a Princess either, but I couldn't sense any Darkness in his Heart. He was pathetically easy to catch, compared to some of the others.

[if he sounds smug, that's because he is. neither he nor Maleficent have realized she's there yet, and he's busy shutting Roxas into one of the chambers around the room. there's twenty in all, and if Riku can catch a glimpse, she'll see that most are filled with different Kairis, as well as a couple Soras and even a Cinderella. they're all asleep.. or seem to be.]