The mortal incarnation of the Goddess Hylia, Zelda is chosen by destiny to be the keeper of the Triforce of Wisdom, which is the main reason she plays such an integral role in the legends of Hyrule, much like Link does with the Triforce of Courage or Ganon with the Triforce of Power. Just like the former, various incarnations of Princess Zelda have appeared across the history of Hyrule and have several alter egos such as Sheik or Tetra. While each Zelda is a distinct individual, the "fundamental soul" of the character has endured from one incarnation to the next.