User blog comment:Don MotMot/Whose WHo/@comment-68.43.155.67-20100605233428

I think that the only way that Luffy will get a title other than a Supernova is that of the Pirate King. It would just be a little strange for him to be considered a Yonkou, because I'm just not sure he'd want it, for it took the other Yonkou a lot of time to become one, and Luffy wants to immediately become the Pirate King. Besides, when his Haki is fully in control, he could kick anyone's butt.