Joyboy remains to be one of the biggest mysteries in One Piece, and fans have only found out a few things about this mysterious individual from the Void Century. Of course, as One Piece continues to explore the Final Saga, fans will most definitely get to learn more about this pirate from long ago, but, at the same time, they also know that there is always a chance to find out information through other means, such as supplementary One Piece material or, old prototypes from Oda that he worked on long ago.