Eraqus

Master Eraqus (voiced by Mark Hamill) is a Keyblade Master and the master of Terra and Aqua, and he also serves as the second master of Ventus. At the beginning of Kingdom Hearts Birth by Sleep, Eraqus prepares to hold the Mark of Mastery exam. Master Xehanort arrives, along with Ventus, at the Land of Departure and the boy watches Terra and Aqua preparing for their exams. Eraqus begins the exam with Aqua passing but Terra failing. Eraqus believes that Terra is not ready, because he lacks control over his own darkness. Eraqus, however, is unaware that Master Xehanort had interfered, using his dark powers to affect the course of the Exam itself.