Krentok

A 500+ year old "child" who had used Immortality on himself. He later becomes a villain from the time Maronak is 17 and 18.

History
When he was just 10 years old, he invented a forbidden spell named Immortality. 8 years later, the tyrannical king fell. Some time afterwards, he founded a group of powerful mages that were corrupted by his ideals, which Maronak would join when he was just 10 years old.