Aeleus

Aeleus, misspelled as "Eleus" in the North American version of Kingdom Hearts II, is one of the six apprentices to Ansem the Wise, and the original persona of Lexaeus. He appears in Kingdom Hearts Birth by Sleep and Kingdom Hearts Birth by Sleep Final Mix.
Story: Aeleus is shown guarding the palace of Ansem the Wise. He and Dilan meet Ventus, but keep him from getting inside the castle, telling him to leave before the monsters come out. Aeleus then spots a giant Unversed, and both guards begin to head after it as Ventus runs ahead of them.
As the two move to follow him, Even approaches and openly wonders what will become of the castle if they left their posts. Aeleus begins to argue, but Even assures Ventus could handle it because he is "special". As Aeleus questions this, Dilan recalls their job to guard the castle, and the two return to their positions at the door.
Sometime after Xehanort's defeat, Aeleus is present when Dilan throws Lea and Isa out of the castle.