Nagash

Nagash the Great Necromancer was the first Necromancer, and was arguably among the most powerful Magic users of all time. He caused the destruction of the civilization of Nehekhara and brought about the creation of the Undead, notably creating the first 11 Vampires of which only 7 are known to the man of the present day, and also unintentionally raised the Tomb Kings from their rest. He is himself a Liche able to command the undead.