The god of Entropy with a Black Hole crown. Will also answer to Reus. (Ree-us)

Sibling to Miros, he is one of the first ever existences. Zareus cause all things to eventually end. Including themselves and their sibling. The merger of Zareus and their sibling Miros ends the current multiverse and causes the next multiverse to be born.
He is always one of the first two entities to come into existence at the birth of the multiverse.

Art by  Obsidianna

Spells given if you follow Zareus as a D&D deity
The Goal of All Life is Death
(more to come)