If the reported ‘Avengers: Endgame Encore’ footage is accurate, the X-Men may be far more important to ‘Avengers: Doomsday’ than anyone expected. The theory suggests the Fox X-Men universe isn’t simply another reality doomed by the multiverse collapse.
Instead, Earth-10005 may actively resist its destruction, creating a problem that Doctor Doom cannot ignore. That could mean ‘Doomsday’ isn’t just about stopping the collapse. It could be about Doom making sure the collapse happens exactly the way he needs it to.
The X-Men Universe Refuses to Die

The reported ‘Encore’ post-credit scene allegedly shows the multiverse beginning to fall apart, with Earth-10005, the reality associated with the Fox X-Men films, caught in an Incursion with Earth-1127. What makes the scene particularly interesting is what supposedly happens next.
Related: Marvel Could Give Professor X His Most Tragic Ending In ‘Avengers: Doomsday’
Instead of simply accepting its fate, Earth-10005 appears to fight back. Weapons are reportedly launched toward another universe before the two realities collide. And that changes the entire situation.
If the X-Men universe can continue surviving while destroying or destabilizing other realities, Doom’s larger plan could become much harder to control. After all, if Doom’s ultimate objective is Battleworld, he needs the multiverse reduced to something he can reshape and rule. He doesn’t simply need destruction. He needs control.
Could Doom Be Forced to Finish the Job?

This is where the theory gets especially interesting. If Doom deliberately triggered the multiversal collapse, potentially through his actions involving Loki, although the exact mechanism remains unclear, then the Incursions could be part of a much larger plan.
In case you missed it: New ‘Avengers: Doomsday’ Rumor Teases 5 Major Hero Deaths Ahead Of ‘Secret Wars’
But Earth-10005 refusing to disappear could become an unexpected obstacle. Doom may therefore have to personally intervene and eliminate the resistance before the final Incursion can occur. In that interpretation, ‘Avengers: Doomsday’ isn’t simply a story about heroes fighting Doctor Doom.
It’s the moment Doom realizes the multiverse isn’t collapsing according to his script. And there is something strangely fitting about the X-Men being the problem. Across their history, the mutants have repeatedly survived persecution, extinction-level threats, and worlds that wanted them gone.
Their ability to endure is practically part of their identity. So what if that same survival instinct becomes Doom’s biggest headache? The X-Men aren’t supposed to be the ones saving the multiverse. But they might be the reason Doom can’t destroy it exactly as planned.
You might like to read: Marvel Could Give Professor X His Most Tragic Ending In ‘Avengers: Doomsday’












