 Lightning ( ライトニング , Raitoningu ) is a fictional character from Square Enix 's Final Fantasy series . She first appeared as a playable character and protagonist in the role @-@ playing video game Final Fantasy XIII , in which she features as a resident of the artificial world of Cocoon . After her sister Serah is declared an enemy of Cocoon , Lightning is captured and imprisoned, and is then tasked with escaping the world with the help of her friends. sierp 2018 r. ... Final Fantasy XIII-2 is a role-playing game developed and published by Square Enix. It is the sequel to the 200