If Kid is also a D, I predict reaching a point in the series where Luffy, Law, Kid and Blackbeard are the Four Emperors. And they're all Ds.

Quote Originally Posted by Kraco View Post
Are these Ds people who in the distant past lost a war against the celestial dragons, before this era of the world government? It might have been a civil war as well.
Sounds plausible.

I thought maybe the D's were Celestial Dragons themselves and the D stood for Dragon, but then I realized that would make Luffy's dad's name Monkey Dragon Dragon.