Gozmo Zalandros

From Introduction:

The being known to the ancient world as Γόζμω Ζαλάνδρος began his arcane career as a lowly apprentice. Exactly which famous archmage first took him as a pupil is a matter of some dispute, and it is not entirely clear if Gozmo Zalandros himself even remembers his one-time master. This first period of tutelage did not last long. He quickly learned to summon demons and so conjured himself new mentors, and in due time, Gozmo was himself one of the most feared and respected archmages in all the civilized lands.