Lexaeus/Aeleus

Lexaeus (voiced by Dave Boat) is Rank V within Organization XIII. He wields control over earth with his massive Skysplitter Axe Sword. His human form, Aeleus, was one of Ansem the Wise's six apprentices. Lexaeus appears in Kingdom Hearts 358/2 Days as a playable character in Mission Mode.

In Kingdom Hearts: Chain of Memories, Zexion, Vexen, and Lexaeus learn that Larxene and Marluxia plan to make use of Sora's power by deceiving him into feeling loyalty to Naminé and use him as a weapon. The senior members decide to make similar use of Riku by creating the Riku Replica. However, when Vexen is destroyed, the replica wanders off, so, Lexaeus confronts Riku. He tries to sway Riku to give in to the darkness inside him and use his full powers. Riku refuses to cooperate, and Lexaeus attacks him. However, Riku's defeat allows Ansem, Seeker of Darkness to take control and destroys Lexaeus. In the original Chain of Memories game, Lexaeus instead died in a sacrificial attack, in a final attempt to eliminate Riku.

Aeleus was one of Ansem the Wise's six apprentices and a guard of his palace, as well as the human form of Lexaeus.

In Kingdom Hearts Birth by Sleep, he and Dilan meet Ventus, but keep him from getting inside the castle, telling him to leave before the monsters come out. After spotting an Unversed, the two move to follow it but Dilan recalls their job to guard the castle and the two return to their positions at the door. Over time, Ansem would grow worried about the Darkness in people's hearts and so, he created a laboratory in his castle's basement for such experimentation, which caused the apprentices to turn into Heartless and Nobodies, Aeleus becoming Lexaeus. The six Nobodies formed Organization XIII and banished Ansem the Wise to the Realm of Darkness.

Aeleus is restored following the demise of his Heartless and Lexaeus and awakens inside Hollow Bastion with the remaining apprentices and Lea and soon realizes that Braig and Isa are mysteriously absent.