In a move that has the fandom of the Marvel Cinematic Universe (MCU) freaking out, Matt Shakman, director of the highly anticipated “The Fantastic Four: First Step” has revealed that the post credits scene was written by none other than the Russo brothers. The legendary duo behind Marvel’s biggest movies like “Avengers: Infinity War” and “Avengers: Endgame” will be helming “Avengers: Doomsday” which hits theaters on December 18, 2026. This means a smooth transition in the story and sets up a big connection between the start of the Fantastic Four and the multiversal conflict.
In an interview with ComicBook.com, Shakman praised the Russo brothers for being hands on with the production of “Fantastic Four: First Step” to get to know the characters. This level of detail ensures that the introduction of Marvel’s First Family is done in a way that fits with their role in “Avengers: Doomsday”. “Fantastic Four: First Step” hits on July 25, 2025 and is the launch of Phase 6 of the MCU so the post credits scene is huge as a tease to the overall story.
An Integrated View of the Multiverse Saga

Enlisting the Russo Brothers to direct the post-credits scene in “The Fantastic Four: First Steps” shows Marvel Studios is committed to a cohesive and connected story within the Multiverse Saga. Just like the post-credits scenes from previous phases laid the groundwork for future movies, this move links the introduction of the Fantastic Four to the threat in “Avengers: Doomsday”.
Since the Fantastic Four will be part of the battle against Doctor Doom, having the directors of “Doomsday” involved in the post-credits scene means their story is tightly connected to the main plot. This not only builds anticipation but also a more seamless viewing experience for the audience.
Strategic Coordination and Fan Hype

Besides the storytelling benefits, the logistics are obvious. The post-credits scene was allegedly shot during the production of “Avengers: Doomsday” and likely took advantage of the Fantastic Four cast who will be part of the next Avengers movie. This streamlined approach shows Marvel’s ability to weave its complex web of stories together.
As “The Fantastic Four: First Steps” gets ready to debut Marvel’s iconic quartet, news of the Russo Brothers’ involvement in the post-credits scene makes this moment even more exciting. This will give us a direct look into the multiversal path of the MCU and raises the stakes for what’s to come.