Oerba Yun Fang is a playable character in Final Fantasy XIII and minor character in Final Fantasy XIII-2. A strong young woman from Oerba in Gran Pulse, she and Vanille share a dark past.

During the War of Transgression, Vanille and Fang lost their whole lives to the war with the fal'Cie. Wishing to protect their home, the two became l'Cie and were granted the power of Ragnarok, with a Focus to destroy Cocoon. Despite this, Vanille was unable to complete her focus, leaving Fang alone to perform the task. Without their combined power, Fang was only able to scar Cocoon's shell and the two were crystallized by the goddess Etro. 700 years later, the two awake from crystal stasis and, unwilling to stand by and watch Vanille become a Cie'th, Fang vows to complete their Focus.

— View the full Oerba Yun Fang overview