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

According to a Marvel theory stemming from The Fantastic Four: First Steps, Avengers: Doomsday could replicate Avengers: Infinity War’s opening scene.

A new Avengers: 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.