Zeref

Zeref is a wizard from the world of Xodius, where he was known as the Black Wizard and was often assumed to be a person of pure evil. He travelled the world for hundreds of years, trying to keep to himself.

This was the case until he met the four and became friendly with them. He disappeared for many years until he was awakened in a tomb on Earth, it was found he was encased in a black crystal and he was running from something which he cannot remember.