A little rookie with a Divine Power Value of 5?
The green monster is a chief deity of the twelfth universe, named Sanguinax, who has fully absorbed the power of five sacred halos. He is a planetary-level powerhouse whose very flesh is formidable, making every inch of his skin, every part of his body, a deadly weapon.
Similarly, absorbing the power of five sacred halos, the mighty archangel Amenadiel, without top-tier artifacts, would likely not last more than three rounds in a battle against him.
"Trash! Die!"
Sanguinax, compared to William, is massive in size and quadrupedal, making William appear as insignificant as an ant before a majestic lion.
Sanguinax suddenly swung his paw, utilizing the power of the ten sacred halos that construct the arena of the twelfth universe.
It's only natural for the guardian of a Cosmic Entity to use the power of their Cosmic Entity.