Khadgar

Khadgar is a mage of great renown and power. He was once apprenticed to the Fallen Guardian, Medivh. He also served as a commander of the Alliance Expedition that traveled to Draenor. He is currently serving as a member of the Council of Six, the ruling body of Dalaran. It was Khadgar who suggested Jaina Proudmoore should take over as leader of the Kirin Tor.