Over 17 years and dozens of movies and TV shows, Marvel Studios has made a series of meaningful retcons to the MCU.

The closing scene of Iron Man 3 features Tony disposing of the most recent Arc Reactor, throwing it off the cliff where his house used to be. It's an incredibly symbolic moment, as he's letting go ...

Iron Man's Battle With Alcoholism Defined "Demon ... Tony creates a specialized armored suit powered by an arc reactor, which keeps him alive. Egotistical but good-hearted, Tony utilizes his ...

Robert Downey Jr. was almost a one-and-done. Marvel had no post-Iron Man plan, yet he evolved into the face—and soul—of the ...

Tony Stark and his amazing Iron Man ... Stark's real Iron Man gear. It consists of small jet engines strapped to his lower arms, ankles and, sometimes, his back. Instead of an arc reactor embedded ...

In response, Stark uses alchemy to create a steam-powered suit, substituting his typical arc reactor with a furnace. While Dark Ages featured a larger, furnace-powered Iron Man, Marvel Rivals ups ...

And this could have a massive impact on his Endgame arc. Again, you can’t change the past. When Iron Man returns to the past, he’ll know he will soon die, but not when. This detail might make ...