As the right-hand man to the future King of the Pirates, Roronoa Zoro is not only the first mate of the Straw Hat pirates, but one of the strongest pirates currently sailing the Grand Line. One Piece has proven that a powerful first mate is necessary to survive and rise in the long-running franchises world. This makes it no surprise that Zoros powers have been enhanced many times over the course of One Piece, but the Wano arc has made this all the more obvious.