Cecil. I like redemption stories. Though Cecil never did anything terrible when compared to other redemption stories, he definitely was on the dark path. I liked how FFIV introduced that concept early then followed through with it to the max. I know most people prefer the dark knight, which I can't really understand unless you are an angsty 14 year old, but I was amazed at the Paladin transformation as a kid, and I guess that really stuck with me.