Yuffie Kisaragi is a secret playable character in Final Fantasy VII. She is a Ninja and a Thief, wielding a large shuriken. As a rebellious and cocky tomboy, Yuffie desires to restore her homeland Wutai to the glorious nation it was before being conquered by Shinra. Despite her sometimes obnoxious personality, she is friendly, helpful, and willingly helps the party in their battles.
Source from Wikipeida