Marvel theory speculates how Fantastic Four might go down – and gives Doctor Doom a fascinating backstory

Fantastic Four MCU cast teaser.

A Marvel fan theory has an intriguing idea for the Fantastic Four movie – and it involves legendary villain Doctor Doom. 

Right now, there's no evidence that Doom will be in the movie, as the only cast members that've been announced make up the Fantastic Four themselves. Still, if Doom is going to be part of the story, this would be an interesting way to bring him in.