Doomsday theory explores how the Fantastic Four might travel to Earth-616. It suggests Reed Richards uses Galactus’ ancient ship tech, combined with his own inventions, to build multiversal transport and rescue Franklin Richards from Doctor Doom’s grasp.

Here are all the movies and shows Marvel has left to release before its next major team-up film, "Avengers: Doomsday"

The film sees the Fantastic Four work to save Earth from the planet-eating Galactus The retro reboot of the beloved comic is rated PG-13, though it's not as gory as other Marvel films The Fantastic Four: First Steps is bringing a new generation of stars into the longtime franchise,