Sue Storm actor Vanessa Kirby says Robert Downey, Jr. is doing "amazing work" as Doctor Doom and as the behind-the-scenes leader of the cast

A good chunk of Doomsday could focus on a clash between Avengers and X-Men with RDJ’s Doom cackling in the background, with a kidnapped Franklin by his side. The premise certainly gives the Fantastic Four a reason to breach their multiversal walls and zip over to 616 to meet the New Avengers.

Robert Downey Jr.'s latest behind-the-scene tease for Avengers: Doomsday suggests a fan-favorite superhero team could join the MCU.

While Robert Downey Jr.'s Doctor Doom is barely shown in the Avengers movie fan trailer, the villain looms over the footage. Characters like Doctor Strange, Mister Fantastic, and Magneto talk about how much of a threat Doctor Doom poses. Scenes of destruction across the multiverse help display how thrilling the upcoming MCU movie could be.

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" has a thrilling ending that teases Dr. Doom and where the MCU goes from here in "Avengers: Doomsday."

The MCU is heading for 'Doomsday,' and Robert Downey Jr.'s villain could make his next appearance alongside Spider-Man.

Doomsday's Doctor Doom (where he'll be portrayed by Robert Downey Jr.), but does The Fantastic Four: First Steps provide any answers about the villain?

Can Doctor Doom beat Thanos? It's an increasingly common question among Marvel fans, with Robert Downey, Jr.'s Doctor Doom set to inherit the title of the greatest enemy of the Avengers from Josh Brolin's Mad Titan, the almighty Thanos.

Doomsday gets stuck into filming, new rumors suggest Chris Hemsworth’s Thor is the second lead. But his new Disney+ documentary is his secret weapon for training.