Lightning, born Claire Farron, is the main protagonist of Final Fantasy XIII and the central character of the Lightning Saga. She is the narrator and a temporary playable character in Final Fantasy XIII-2 and returns as the protagonist and only directly playable character in Lightning Returns: Final Fantasy XIII. In Final Fantasy XIII, Lightning seeks to save her younger sister Serah but becomes entangled in a plot that endangers Cocoon, her homeworld. In Final Fantasy XIII-2, Lightning serves as a knight protecting the goddess Etro from her fated rival, Caius Ballad. In the concluding tale, Lightning Returns: Final Fantasy XIII, the god Bhunivelze chooses Lightning to be a savior, tasked to save the people's souls before the end of the world. Lightning is the second primary female protagonist in a mainstream numbered Final Fantasy game, with Terra Branford from Final Fantasy VI generally accepted as being the first.