MCU Villain Battle Royale: Who Would Come Out On Top?

The two biggest threats to the Avengers in MCU history both proved themselves to be relentless and deadly in battle. Thanos killed Heimdall, Loki, Gamora, and Vision, while annihilating anyone else in his path, and Ultron cold bloodedly killed Pietro, a man who was on his side just days earlier.

Episode eight of What If…? on Disney+ answered who would win between these two if Ultron had Vision’s body and caught Thanos unawares. But in the main continuity, Ultron never achieved his own vibranium body, and was never able to take the Infinity Stones from the Mad Titan. In this universe, Thanos would have had a real fight on his hands with Ultron, but ultimately would have defeated him.

Even in spite of being able to fight as an army by himself, and with Thanos having to ensure every last bot was killed, without an Infinity Stone to wield Ultron’s resistance would be futile. It took the combined might of an Avengers/Guardians hybrid to nearly defeat Thanos, and that was when he had just four stones.

An army of Ultron bots wouldn’t have that kind of power to begin with, and would mainly be cannon fodder. In another universe, Ultron would defeat Thanos, but in this one, the Mad Titan gets the win.

Winner: Thanos