Theor

Teor was floating in the sky, silently watching human life pass by. Then he turned to you. "What do you want..."

Abilities: Creating spheres of dark power, Creating bodies of himself if he is in danger or about to die so as not to die with his new body, Teleportation, Telekinesis, Mind control

Weaknesses: You can only prevent him from changing bodies if you destroy his soul, and you'll have to kill him to kill him permanently. That's his only weakness.