The multiversal nature of Kang the Conqueror and his variants can change the way Earth's Mightiest Heroes win the battle in Avengers: Endgame ended with the Infinity Gauntlet's snap.
This is bound to change with Kang the Conqueror's arrival, as every Kang variant is an independent entity of their own. Kang the Conqueror and his multiversal counterparts are not linked to any network and there's no MacGuffin that can snap them all out of existence. The Infinity Stones don't work outside their home universe, and even if they did, Kang would be able to hide in Chronopolis inside the Quantum Realm. Without a weapon that automatically neutralizes the villain and his minions, the Avengers will likely need to double their efforts and track down every Kang variant to ensure they're either dead or permanently locked up.
The Multiverse Saga Needs A New Approach To Its Villain
So far, Loki, Ultron, and Thanos have been huge challenges for the Avengers, but mostly because they get dangerously close to using weapons like the Tesseract, the Infinity Gauntlet, and Sokovia itself to end the battle. Ultron almost had a different strategy, as the Avengers couldn't let any Ultron Bot escape to replicate himself indefinitely. This was supposed to be Ultron’s greatest strength, but it seems he never took advantage of his connection to the internet to return. Now, Kang the Conqueror could easily overpower the Avengers with a similar advantage. Kang and his variants could split across universes and timelines to escape the Avengers and gradually conquer the multiverse, forcing the Avengers to attempt the same thing. Unlike previous Avengers movies, Avengers: The Kang Dynasty and Avengers: Secret Wars wouldn't be a race to obtain the artifact that automatically wins the battle, but a multiversal board game where strategy is the top priority.
How The MCU’s Kang The Conqueror Can Be Defeated
Given that Kang the Conqueror may not be stopped with the snap of a finger, Avengers: The Kang Dynasty and Avengers: Secret Wars might need a different conclusion. Kang's multiversal antics may lead the MCU's brightest minds to formulate a complex new version of Avengers: Endgame's time heist, but instead of the Infinity Stones, the goal would be to weaponize time travel, interdimensional travel, multiversal rules, and causality (thus making logical paradoxes a potential weapon for both Kang and the Avengers). This means that victory in Avengers: The Kang Dynasty and Avengers: Secret Wars would be a matter of brains over brawn.
This new approach raises countless different possibilities for Kang the Conqueror's defeat. From turning Kang and his variants into babies or tricking them into entering a collapsing universe, or perhaps coming to peaceful with them like He Who Remains says he did, there are a variety of interesting new options for the Avengers to explore. Whatever method the Avengers choose, the Multiverse Saga can end with a much more creative defeat of its main villain, avoiding the Avengers' previous MacGuffin trope.