Only a handful of anime have managed to cross the 1,000-episode mark, and One Piece is one of them. It is considered to be one of the greatest Shonen anime of all time, and after more than two decades, its popularity is still growing. Eiichiro Oda created a series with a vast world and an incredibly detailed story, but what makes One Piece really stand out is its characters, who for the most part, are all very well-written.