Rau Eryey [ra-oh er-yeey] is an assistant professor at Muni and a member of the Eryey noble family. Kiel and Elaru first met him in Episode 12, where he was assigned with the task of accepting entries to Muni Entrance Exams. His next appearance was on the exams, where he turned to be one of two examiners of Kiel Rroda.
He has shoulder length bluish gray hair, usually tied at the back, and dark green eyes that look almost gray. It is stated that he has a scholarly air about him.
His elibu markings are positioned on his back, traveling down his spine.