Raven

Raven is one of the Three Sages of the West and a friend of Shions. He is also the Head Master at the Ecnovious School of Rituals. He lived in Fools Town as a child and used to follow Shion around and ask him stuff. Raven is a powerful mage despite his age. His magic is called Hell Lesson and is based on school subjects Math Chemistry Art P.E.... Each subject is divided into onehour sessions and each one lets Raven use different skills and abilities. Source: Magico Wiki