Kang Vs Thanos Vs Doctor Doom: Which MCU Villain Would Win?

Summary
- Thanos, Kang, and Doctor Doom are all major villains in the Marvel Universe, with Thanos having been the most powerful due to his possession of the Infinity Stones.
- Kang the Conqueror is the biggest threat to the Avengers in the MCU, with the Council of Kangs seemingly preparing to directly destroy the Earth's Mightiest Heroes.
- While Thanos destroyed half of all life in the universe, Kang and Doctor Doom have also committed heinous acts, making it difficult to determine which villain achieved the worst feats. However, Doctor Doom could have the most compelling origins and a greater longevity as an upcoming MCU big bad.
Thanos the Mad Titan, Kang the Conqueror, and Doctor Doom are all major villains in the Marvel Universe. While Thanos and Kang are already part of the Marvel Cinematic Universe as overarching villains, it's likely only a matter of time before Doctor Doom follows suit. However, one has to wonder which of these foes is the most powerful.
In the MCU's initial Infinity Saga, Thanos served as the culminating villain throughout Phases 1-3, all leading up to Avengers: Infinity War and Endgame. Now, Kang has taken that role in the Multiverse Saga's Phase 4 and the current Phase 5 ahead of Avengers: The Kang Dynasty in Phase 6. Likewise, many are expecting the imminent debut of the MCU's version of Doctor Doom, especially with both a Fantastic Four reboot and Avengers: Secret Wars on the horizon. Here's a comparison of all three villains in the MCU (or soon to be), and where they rank regarding power levels, origin stories, worst acts committed on-screen, and more.