Xemnas

Xemnas (ゼムナス, Zemunasu^?) is the Nobody of Xehanort, also known as "The Superior of the In-Between" (狭間の指導者, Hazama no Shidōsha^?). The character's name is based on Xehanort's alias, "Ansem". Xemnas is the leader of the Organization and the primary villain of Kingdom Hearts II. He controls Sorcerer Nobodies, and fights with "ethereal blades"—beams of light he generates from his palms—called "Interdiction" (フォービドゥン, Fōbidun, lit. "Forbidden"). The character can manipulate nothingness to phase through solid matter and manifest energy-based shields and projectiles. The character first appeared in Kingdom Hearts Final Mix as an optional boss labeled "Unknown" (謎の男, Nazo no Otoko, lit. "Enigmatic Man"), testing Sora's abilities. Xemnas is voiced by Norio Wakamoto and Paul St. Peter in the Japanese and English releases of the series, respectively.
In Kingdom Hearts II, Xemnas initially appears in Roxas's recollection of meeting him on his sixth day as an Organization member. His plan is to increase the power of Kingdom Hearts by having Sora destroy Heartless, releasing the hearts inside them. At the World That Never Was, Xemnas waits for the completion of Kingdom Hearts until Ansem the Wise attempts to digitally contain its power. Other than his agenda of becoming one with Kingdom Hearts to transcend into a higher state of being, Xemnas has another goal—to reach the Chamber of Wakening for reasons none of the other Organization members know. However, Ansem's machine overloads and explodes, sending him into the Realm of Darkness and damaging Kingdom Hearts. After Sora refuses 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 separates Sora and Riku from the others to attack them. However, the two defeat Xemnas and he fades into darkness, eventually reforming Master Xehanort. In Dream Drop Distance, Xemnas reappears as a member of the newly formed Organization XIII led by Master Xehanort. He reveals the original Organization's true purpose to Sora, as well as his manipulation of its other members into believing they do not have hearts to earn their cooperation.