...that Axel shares his voice actor with Reno from Final Fantasy VII over a variety of languages?
...that Riku is the only character in the Kingdom Hearts universe to call King Mickey by his name by Mickey's own request?
...that part of Kairi's name ("Kai") is the Japanese word for "sea" (海), and that her whole name is homophonous with the word for "nautical mile" (海里 or 浬)?
...that the checkers on Roxas's jacket represent light and darkness?
...that Marluxia was originally intended to be a female character?