Eraqus

Master Erauqs is a character who appears in Kingdom Hearts Birth by Sleep as Ven's, Aqua's and Terra's master. His home world is the Land of Departure.

Kingdom Hearts Birth by Sleep
Master Erauqs appears in Birth by Sleep as the master of Ven, Terra, and Aqua. In the TGS trailer, he was shown together with Master Xehanort, and opens the "Final Exam" for Keyblade Wielders and Apprentices. He's also the one who sends out his apprentices to search out Master Xehanort and his apprentice after their unexpected leave.

Trivia

 * Master Erauqs wears a similar belt like Terra, Aqua and Ven.