User blog comment:D.Dragon123/Why does Roger and Luffy, look so much alike???/@comment-4498721-20111221224810

Because they are the same person! One Piece is actually a time machine, Luffy is gonna use it to go back in time, and he will be (or was) the Pirate King!

That's also the reason of why the Straw Hat is indestructible, 'cuz it's a time anomaly! It's in a time loop of Roger>>Shanks>>Luffy->Roger>>...