The season of superheroes is well and truly upon us now that Captain America: Civil War has hit cinemas.
But did you know Captain America’s temporary nemesis, Iron Man, wasn’t originally supposed to be played by Robert Downey Jnr?
Or that Wolverine was supposed to pop up in the original Captain America film?
Here are 20 secrets about the films in the Marvel Cinematic Universe that you may not know from the good people at ScreenRant…
Captain America: Civil War is in UK cinemas now