The familiar Baxter Building featured in The Fantastic Four: First Steps will be seen again in Avengers: Doomsday, Marvel boss Kevin Feige has said, sparking speculation over what this means for the fate of the Fantastic Four's version of Earth.

That's right, the Russos are back. As with the Thunderbolts* post-credits scene, Joe and Anthony Russo shot the post-credits scene for The Fantastic Four: First Steps, according to director Matt Shakman.

Marvel Comics achieved tremendous success when Stan Lee and Jack Kirby introduced the Fantastic Four in 1961. Now, almost 64 years later, the MCU is looking to four intrepid heroes to do so once again, ushering in a new era of excitement. Will history repeat itself?

A Fantastic Four original star has sparked rumours he will return in Avengers Doomsday and Avengers Secret Wars.

Pedro Pascal, Vanessa Kirby, Ebon Moss-Bachrach, and Joseph Quinn star in Marvel's latest, out July 25.

Matt Shakman reveals the Russo Brothers followed part of The Fantastic Four: First Steps' development to prepare for Doomsday.

Title: The Fantastic Four: First Steps Director: Matt Shakman Screenwriters: Josh Friedman, Eric Pearson, Jeff Kaplan, Ian Springer Cast: Pedro Pascal, Vanessa Kirby, Joseph Quinn, Ebon Moss-Bachrach, Paul Walter Hauser, Julia Garner, Ralph Ineson Distributor: Walt Disney Running time: 1 hr 55 mins

The Fantastic Four: First Steps marks the start of Phase 6 of the MCU, the final phase of The Multiverse Saga that has tested fans and led to Kevin Feige admitting that Marvel has made "too much" since Avengers: Endgame.

The Fantastic Four are taking their First Steps into the MCU, and it’s in the best movie in the series since Guardians of the Galaxy Vol 3.

Fantastic Four First Steps has the dual pressure of re-introducing the team and setting up Avengers: Doomsday.

"As we as we kick off phase six with with 'Fantastic Four,' and as everybody knows it ends with 'Secret Wars,'" Feige said.