I thought this was going to be about our favorite Fungi Forums characters, in which case I was going to say Ped Xing.
I haven't played much Final Fantasy. I almost beat 4 on the DS, but that was a while ago. I think I remember liking Cid in there? And Cecil is pretty interesting. The After Years kinda sucks, by the way.
Oh, and Kefka. I've only played an hour or two of 6 so far, but Kefka is already one of my favorite things ever.