Luxu

Luxu is a Keyblade Master who appears in Kingdom Hearts χ. He is an apprentice of the Master of Masters.

Kingdom Hearts χ Back Cover
Luxu is named by the Master of Masters but does not receive a copy of the Book of Prophecies. Instead, he inherits the No Name and a mysterious box, with which he is instructed to journey afar. Luxu does as ordered, and in a barren wasteland, he prepares to observe events and ensure they unfold as written in the Book.

Kingdom Hearts χ
On the outskirts of Daybreak Town, Luxu is confronted by Ava, who seeks to find the Master of Masters so she can prevent the Keyblade War. Luxu tells Ava the conflict is inevitable, and she accuses him of being the traitor who caused the Unions to fall apart. In response, Luxu summons the No Name.

Kingdom Hearts 0.2 Birth by Sleep -A fragmentary passage-
With the No Name in-hand, Luxu silently observes the conclusion of the Keyblade War. This grants the Master of Masters knowledge of the event.

Appearance
Like the Master of Masters, Luxu wears a black coat.

Personality
Contrary to the Master of Masters, Luxu is quiet and reserved.

Abilities
Luxu is a Keyblade Master who inherits the No Name from the Master of Masters.

Etymology
Luxu's name is derived from the word , which means "lust" in Latin.