4. Chloe Moretz Turned Down Jean Grey
Though more rumours seem to appear every couple of weeks concerning who will fill the remaining spaces on the X-Men: Apocalypse there's nothing concrete on who will be joining as Jean Grey, Cyclops and Storm (or Nightcrawler for that matter). Nothing positive anyway. The only semi-confirmed rumour relating to the returning characters is that Chloe Moretz has turned down the opportunity to play Jean Grey, for unknown reasons. She apparently met with the film-makers to discuss the role (along with Elle Fanning and Hailee Steinfeld allegedly), but her rejection of the chance was swift enough to suggest there was something fundamentally at odds with her availability, rather than a catastrophic problem with the direction of the character or something more sinister. With unified universes tying up all of the choice characters and limiting future possibilities to play anyone as potentially key as Jean Grey, Moretz might well come to rue that decision to rule herself out so quickly, if she does have aspirations to appear in a comic book movie.