The only KH games I managed to finish were 358/2 and Re:coded (Re:coded was honestly a waste of time imo), and I've nearly beaten CoM. I played 1 once, but that was, like, 6 years ago. But I'm getting a PS2 sometime soon so I can play 1 and 2.
And you cosplay?! That's so AWESOME! I was thinking about dressing as Zexion for Halloween, but I don't know if I could just buy the robes. I saw a wig, though. Course, my hair is already long, and I don't know if I could put on a wig. I've always wanted to go to a comic-con, but there's never any good ones near me, or at least none that I hear about.