Sephiroth

Sephiroth is a mysterious swordsman with a connection to Cloud's past. Cloud considers Sephiroth a representation of his own inner darkness. He, along with Cloud, Tifa, Aerith, Yuffie, Zack, and Cid, originates from the Squaresoft game Final Fantasy VII, where he serves as the main antagonist. So far, Sephiroth is the only main antagonist from the Final Fantasy franchise to appear in the Kingdom Hearts series.