Roronoa Zoro, the swordsman of the Straw Hat Pirates, is one of the most incredible characters that Oda has written into his story. Being the number two of the pirate crew, it is no surprise for the fans to know that Zoro is absolutely essential for the story to move forward. Zoro is important for Luffy to become the Pirate King, and at the same time, there are other aspects of this character that elevate the story as well. One of the most important aspects of Zoro's character is his dream to become the World's Strongest Swordsman, which depends entirely on strength alone.