Shanks is one of the Four Emperors of the Sea and a very important character in One Piece’s overarching plot. Shanks is the man primarily responsible for Luffy wanting to become the Pirate King, and that certainly says a lot. Over the years, fans have seen glimpses of Shanks's power, and there is absolutely no denying the fact that he is one of the strongest in the world right now, if not the strongest.