Atlus Arcadium Rex

Atlus Arcadium Rex is one of the main antagonists of the "Shisno Paradox" arc of Red vs. Blue. He is the king of a group of cosmic entities that view the Reds and Blues as a threat to the balance of the universe.

History
Atlus, as one of the oldest beings in the universe, is the king of a race of cosmic entities that uphold fate within the universe. He is first seen sitting on his throne in a faraway sanctuary, receiving news from his subordinate Muggins that the Reds and Blues have embarked upon the "Pizza Quest", thus beginning the final prophecy.

After Kalirama failed to deal with the Reds and Blues herself, Atlus calls a meeting with all the other entities to discuss the situation. Fearful that the Reds and Blues' continued time travel escapades would bring about the release of 'him', Atlus ordered their deaths, stating that if he wants them dead they already are.