Thanos is now ruler of the Eternals! But believe it or notâÃÂ¶he's actually not the worst leader that the Eternals' society has ever seen. No, that honor belongs to someone even more horrific. Thanos is evil, yes, but who was the original evil from whom all Eternal evils descend? Meet Uranos, the Undying. And may the Celestials have mercy on your souls.