ok hear me out

i honestly think an alternate tony stark becoming doom would hit harder than introducing doom as a brand new character right away.

after age of ultron, everything about tony is fear-driven. that vision of everyone dead never leaves him, and pretty much every bad decision later traces back to that. ultron, the accords, the avengers falling apart all of it.

so when he snaps in endgame, i don’t see that as fear being resolved. i see it as fear being validated. the universe survives because he makes the final call.

with the multiverse now, i like the idea that there’s a timeline where he survives the snap but gets completely messed up by it. scarred, broken, and convinced that being a hero isn’t enough anymore.

this is where baby franklin comes in.

tony knows he can’t control everything on his own, so he goes to someone who literally can. franklin richards. someone who can rewrite reality itself. and instead of asking for power, he asks for a world where things never fall apart. where the avengers don’t break up and no one he loves dies.

personally, that’s why this works for me. doom wouldn’t be evil just to be evil. he’d genuinely believe freedom is the problem and control is the solution.

the mask isn’t just armor. it’s him erasing tony stark.

iron man to doom feels like the darkest possible endpoint of his arc, and that’s why i think it fits.

not saying this is what marvel will do, just a direction i think actually works.
Doctor Doom, an Alternate-Timeline Tony Stark After Endgame