Note: Be aware there are spoilers for “The Fantastic Four: First Steps” in the article below.

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.

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.

First Steps” is the third Marvel movie to hit theaters this year, but it packs way more hidden references and nods than “Captain America: Brave New World” or “Thunderbolts.” It’s not on the same level of Easter eggs as last year’s “Deadpool and Wolverine,

First Steps offers interesting insights into the ultimate villain who is set to appear in the MCU in Avengers: Doomsday.

Though it's only a very brief clip, Joe and Anthony Russo have shared footage of some audience reactions to the mid-credits scene of The Fantastic Four: First

So yes, Doctor Doom does appear in First Steps. In the mid-credits scene, we jump four years into the future and see Sue Storm and her son Franklin reading together in their home in the Baxter Building.

First Steps" star Vanessa Kirby breaks down Sue Storm's birth scene and her mid-credits moment with Robert Downey Jr. as Doctor Doom.

Major Superstar Was Hiding In Plain Sight In 'Fantastic Four,' Filmmaker Confirms “ The Fantastic Four: First Steps” took in $118 million over the weekend to dethrone “ Superman ” and lead the weekend box office. And one scene that had fans talking didn’t come during the movie itself. It came during the credits.