Fan Casting Eclipso in Ben 10/Justice League: The Series

Eclipso is a powerful cosmic entity representing the wrath of God. Eventually he turned evil and was cast from Heaven, with the Spectre chosen to take his place. He is an entity who bonds himself to a human host using black diamonds to bring out their anger, usually taking the form of scientist Bruce Gordon. Although he is capable of bringing out the darkest evil deep in the hearts of men by his presence alone, Eclipso can be defeated by direct light.