|Featured In||Kingdom Hearts: Final Mix, Kingdom Hearts II|
Xemnas is the Nobody of Xehanort, however, his named is adapted from Ansem, the name that Xehanort stole from Ansem the Wise. Xemnas was created when Xehanort entered the darkness and became a Heartless. Xehanort's colleagues and former subordinates of Ansem the Wise also became Heartless, and they also had their Nobodies take the form of humans. Xemnas, with those other five Nobodies, created what would become Organization XIII.
 Between Birth By Sleep And Kingdom Hearts
Xemnas created Organization XIII so that he and the other members would be clones of Xehanort so they can attack the seven guardians of light. Unfortunately, Xemnas knew that the other members shifted the goals.
 Kingdom Hearts: Final Mix
In Kingdom Hearts: Final Mix, he is an optional boss that you can fight, known as the Unknown or the Enigmatic Man and is the most difficult boss to defeat. His identity was very clouded, however. His face was never revealed as his hood concealed it during his whole cameo. When he first appeared to Sora, he seemed to walk right through him, saying, "Ah, it seems you are special as well." Goofy replied "Ansem?", suspecting him for some reason. Xemnas referred to it as "a familiar sound". Xemnas actually does seem to have a personality in this scene. Xemnas says, "You look like him", to Sora, and he remarked that he wanted to test Sora's power, stating that Sora was incomplete. By this, he meant that Sora had lost his heart, and this his Nobody, Roxas, looked like Sora and had the rest of his power, but he did not specify this. After fighting him, he said that he was fascinated at how much power Sora had. Although Sora asked who he was, he never revealed his name to Sora. He simply left, with these closing words: "I am...a mere shell." This was a hint to the nature of Nobodies and their existence.
 Kingdom Hearts: Chain of Memories
Very little of him was mentioned in Kingdom Hearts: Chain Of Memories. Zexion mentioned him, noting that Riku smelled similar to The Superior, "exactly similar". This is because Riku had Xehanort's Heartless in his heart. Both Xehanort's Heartless and Xemnas are essentially who make up Xehanort. Axel, Larxene, Marluxia, and Vexen simply referred to him as The Superior.
 Kingdom Hearts II
He is the main antagonist in Kingdom Hearts II. He led the remaining sect of Organization XIII. He was not seen very often until the end of the game, in the final world. He appeared briefly in Hollow Bastion, during the battle with the 1000 Heartless and disappeared into a corridor of darkness with King Mickey chasing after him. His plot was to use Sora to kill Heartless. By having Sora kill Heartless, he hoped to acquire their released hearts and use them to create Kingdom Hearts, so that he and other Nobodies could become whole again. He also wished to destroy other worlds and then create his own that he could lead. Ansem the Wise interrupted this plan when he attempted to encode Kingdom Hearts into data. He could not encode the hearts, but the failed attempt resulted in the self-destruction of the Heart Encoder, damaging a significant portion of Kingdom Hearts and killing Ansem the Wise. Xemnas drew forth a considerable amount of power from Kingdom hearts, and then entered what was left of it. After he entered, a door into Kingdom Hearts appeared. Using their Keyblades, Sora, King Mickey, and Riku opened the door into Kingdom Hearts. They pursued Xemnas into what appeared to be an alternate version of dark city in The World That Never Was. When they reached the top of the tower there, they fought Xemnas again, how sat upon a throne in white armor. They defeated him again. At this point, it seems as if The World That Never Was was crumbling. Naminé created a corridor of darkness through which Kairi, Goofy, Donald, and King Mickey escaped. It closed before Sora and Riku could pass through it. A large, mechanical dragon then rose from the darkness. Sora and Riku boarded a small flight speeder and used it to destroy the dragon. They fought Xemnas again, who was in his white armor. They then found themselves in the core of Kingdom Hearts. Xemnas wore a cloak in the likeness of Organization XIII, but it bore a white color, with black patterns on it. Working together, Sora and Riku slew Xemnas, ending his plot completely. Unfortunately, his death brought in the return of Xehanort.
 Kingdom Hearts 3D: Dream Drop Distance
 Journal Entries
 Kingdom Hearts Final Mix
A mysterious man who appeared at Hollow Bastion.
 Kingdom Hearts II
 First Entry
Organization XIII's Number I. He directs the group as its leader. Organization XIII is a unique presence among the Nobodies. They think and plan, and seem to have a greater goal.
What that is remains to be seen, but they appear to know a bit about the Keyblade.
 Second Entry
Organization XIII's Number I. He directs the group as its leader. In truth, he is the Nobody of Xehanort, who was apprenticed to Ansem the Wise. In secret, Xehanort studied the doors and the heart of all worlds, ultimately stealing his master's name, Ansem. When Xehanort became a Heartless, his Nobody Xemnas came into being.
Xemnas is using Sora, collecting the hearts released every time a Heartless falls to his Keyblade.
 Third Entry
Organization XIII's Number I, who acts as leader of the group. Xemnas is the Nobody of Ansem's apprentice Xehanort. He used Sora and his Keyblade to collect hearts from the Heartless and see Kingdom Hearts to its completion.
 Kingdom Hearts 358/2 Days
No. I XEMNAS Organization XIII's leader. Through power over nothing, he seeks power over everything.
Weapon: Ethereal Blades
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