How Franklin Richards, the power cosmic and Doctor Doom's appearance in "The Fantastic Four: First Steps" credit scene affects "Avengers: Doomsday."

In Marvel Comics, Doom’s fixation on Franklin is legendary. He views the boy’s near-limitless powers as the key to creating and ruling Battleworld, a twisted reality of his own making as seen in Secret Wars.

Franklin’s powers allowed him to create the universe, dimensions, avoid mind control, and every other cool power you can think of. Franklin Richards is considered a Beyond Omega Level mutant, and he is the only one in that category, making him the most powerful mutant on Earth.

Marvel Studios is taking taking the MCU in a wild direction with The Fantastic Four: First Steps , and the biggest reveal yet is the introduction of Franklin Richards, one of the most powerful characters in Marvel Comics history.

EXCLUSIVE: Marvel Studios president Kevin Feige reveals why Franklin Richards was introduced in the MCU's first Fantastic Four movie.

First Steps will introduce one of the comic's mightiest characters, who Kevin Feige says has a bright MCU future.