Japanese voice actor: Norio Wakamoto
English voice actor: Paul St. Peter
Xemnas (ゼムナス ,Zemunasu?) is the Nobody of Xehanort, his name an anagram of his other self's alias of "Ansem". He is the leader of the Organization and the main antagonist of Kingdom Hearts II.He controls Sorcerer Nobodies, and in battle he uses Aerial Blades and manipulates nothingness to phase through solid matter and manifest energy-based shields and projectiles. Having been a Nobody for ten years, Xemnas is truly emotionless and does not even remember what it was like to have emotions. Unlike the other Organization members, Xemnas does not want to use Kingdom Hearts to obtain a true existence; rather, he wants to use it to obtain power and conquer the universe. In Kingdom Hearts Final Mix, Xemnas appears as an optional boss in Hollow Bastion, labeled as "Unknown" (謎の男 ,Nazo no Otoko?, lit. enigmatic man). He personally tests Sora after recruiting his Nobody Roxas, impressed with his abilities and taking an interest in him as a key figure in his plan. In Kingdom Hearts: Chain of Memories, he is infrequently spoken of by the members of the Organization, who refer to him only as the "Superior".
In Kingdom Hearts II, Xemnas initially appears in Roxas's dreams, as he struggles to remember what he is. Xemnas also makes two appearances at Hollow Bastion; in the second, his identity is clarified and his face revealed. His plan is explained as increasing the power of Kingdom Hearts by having Sora destroy Heartless, releasing the hearts inside them. At the World That Never Was, Xenmas was waiting for the completion of Kingdom Hearts until he sensed the attempt by DiZ to digitally contain Kingdom Hearts' power. However, DiZ's machine overloads and explodes, killing its creator, leaving a huge hole in Kingdom Hearts and causing many of the hearts to rain down and become Heartless. After fighting Sora one on one when he refused to aid him in restoring Kingdom Hearts, Xemnas uses what is left of Kingdom Hearts' power to take on a new form to fight Sora's party. Though Xemnas is thought to be defeated, he manages to separate Sora and Riku from the others, and attacks them. However, the two defeat him after a long battle in which Riku is severely injured, and he fades into darkness after cursing the power of the Keyblade.
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