I believe it was Gol D. Roger who was King of the Pyrites. And his final dying words drove countless people to the sea in chercher of One Piece, the treasure to make anyone's wildest dreams come true. Remember the Intro/Opening showed him about to get a traverser, croix blade death chop off his head before the actual Episode started. And if i remember correctly there was an Episode 0 that showed Gol D. Roger in it when Chaser/Smoker was a little kid back than. Just going par the Intro/Opening that appeared before the Episode did. But that all depends if toi are going par the original,4Kids Entertainment/Cartoon Network. ou FUNimation version.