Xemnas

Xemnas, the Superior of the In-Between, sometimes referred to as the Superior or Lord Xemnas by members of the original Organization XIII, is the Nobody of Terra-Xehanort. He is the leader of the original Organization XIII, the former ruler of The World That Never Was, and a member of the real Organization XIII. He serves as the main antagonist of Kingdom Hearts II and as a supporting antagonist in Kingdom Hearts 358/2 Days and Kingdom Hearts 3D: Dream Drop Distance.

Xemnas wields the power of nothingness, and he channels this into his weapons, red blades of energy called Ethereal Blades. He commands the Sorcerer Nobodies. Xemnas, as the Superior, is the founder of Organization XIII and has dominion over all other Nobodies. He is also the Organization's most powerful member, to the point that Marluxia would not dare to face him alongside Larxene and Axel until Sora was also under their control.

Xemnas's name is derived from the alias his human form took when he assumed the identity of his exiled mentor, Ansem. Xemnas is a playable character in Kingdom Hearts 358/2 Days's Mission Mode.