Lightning is a character from the Final Fantasy video game series made by Square Enix. She first appeared as a playable character and the main protagonist in the role-playing video game Final Fantasy XIII, in which she is a resident of the artificial world of Cocoon. After her sister Serah is declared an enemy of Cocoon, Lightning attempts to save her and is chosen by divine powers to destroy Cocoon. Lightning reappears as a supporting character in Final Fantasy XIII-2, acting as protector of the Goddess Etro. She is the sole playable character in Lightning Returns: Final Fantasy XIII, wherein she sets out to save the people of her dying world. Outside the XIII series, Lightning has been featured in multiple Final Fantasy games and had cameo appearances in other video games.

Final Fantasy XIII is a role-playing video game developed and published by Square Enix for the PlayStation 3 and Xbox 360 consoles and later for Windows. Released in Japan in December 2009 and international in March 2010, it is the thirteenth title in the mainline Final Fantasy series. The game includes fast-paced combat, a new system for the series for determining which abilities are developed for the characters called "Crystarium", and a customizable "Paradigm" system to control which abilities are used by the characters. Final Fantasy XIII includes elements from the previous games in the series, such as summoned monsters, chocobos, and airships.