User blog comment:Monkey.D.Me/But Why?/@comment-3027922-20121009234749

As for the first one, I think it's just because he's, well, Doflamingo. He's a Warlord, and we don't know much about him even now when we're delving more into his character. I think there's some dark secret behind him we haven't fully revealed yet. Plus, his abilities are quite intimidating, as well.