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

Doomsday's Doctor Doom hails from Earth-828, the reality inhabited by Marvel's First Family in The Fantastic Four: First Steps. Read on for

In their MCU debut, the Fantastic Four become a Fantastic Five with the arrival of Reed and Sue's son, Franklin Richards. Worries that he might not be "normal" are confirmed in Fantastic Four: First Steps when Galactus recognises that the boy can wield an unlimited energy known as the Power Cosmic (presumably because of the "cosmically compromised DNA" shared by both of his parents).

First Steps is finally in theaters, bringing the First Family to the Marvel Cinematic Universe. Now, all roads lead to Avengers: Doomsday, the next big crossover event in Marvel’s uneven but never-ending comic book movie saga.

In addition to setting up Galactus and the Silver Surfer, Fantastic Four: First Steps finds time to tease another major villain.

As detailed in a new article over at Vanity Fair, The Fantastic Four: First Steps includes a few truly unexpected cameos outside of Paul Walter-Hauser’s Mole Man or its brief nods to other 60’s-era Marvel antagonists. As this site’s own intergalactic herald, may all who pass the purple portent below know they will be irreparably spoiled…