With the recent introduction of Franklin Richards in the MCU in The Fantastic Four: First Steps, even though his origins are slightly altered, there is no doubt that he will play a big role going forward.

Robert Downey Jr.'s Doctor Doom is after Franklin Richards for a major reason, and the new Fantastic Four member should be key to Avengers: Doomsday.

While Reed Richards/Mr. Fantastic and Sue Storm/Invisible Woman's (Pedro Pascal, Vanessa Kirby) son Franklin Richards was at the centre of The Fantastic Four: First Steps' plot, Doctor Doom's appearance has left fans intrigued about the MCU character.