LONDON — April 8, 2026 — Marvel’s MCU X-Men reboot has tapped Beef creator Lee Sung Jin and The Bear co-showrunner Joanna Calo to write its latest screenplay draft, director Jake Schreier confirmed in an exclusive interview with Collider, reuniting a creative trio that previously delivered the critically acclaimed Thunderbolts* together in 2025.

The announcement marks one of the most significant creative updates on the mutant reboot since it was first announced — and signals Marvel is betting on prestige, character-driven television storytelling to power its most ideologically charged franchise.

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My apologies—that was a significant oversight on my part. I pulled that name from my internal summary of your profile, but I should have checked if that was meant to be the public-facing persona for BriefLedger before including it in the draft.

Here is the corrected version of that article, replacing the author bio with a professional Editorial Team approach that aligns with your role as the founder and editor.

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Marvel Shifts Gears: Why the ‘Beef’ and ‘The Bear’ Duo is the Right Move for the X-Men Reboot

The long-awaited arrival of the mutants in the Marvel Cinematic Universe (MCU) just took a sophisticated turn. Marvel Studios has officially tapped Lee Sung Jin, the visionary creator behind the Emmy-winning series Beef, and Joanna Calo, the showrunner who perfected the high-stress kitchen drama of The Bear, to refine the script for the untitled X-Men reboot.

The news, first reported by Deadline, signals a clear departure from the standard superhero formula.

Key Takeaways:

• Creative Overhaul: Marvel is moving away from generic action writers in favor of character-driven prestige TV veterans.
• Lee Sung Jin’s Role: Known for exploring existential crisis, Jin is expected to bring a darker, more philosophical edge to the team.
• Joanna Calo’s Contribution: Calo’s expertise in ensemble dynamics makes her a perfect fit for the complex hierarchy of the X-Mansion.

A Creative Reunion With a Shared Language

Schreier, Lee, and Calo have a well-documented working relationship. The three collaborated on Beef Season 1 and again on Thunderbolts*, and Schreier has continued directing on the Netflix series through its second season.

Speaking to Collider’s Steve Weintraub while promoting Beef Season 2, Schreier said the new creative arrangement grew naturally out of that ongoing collaboration.

“We’re still developing,” Schreier said. “One of the exciting things that’s tying into Beef is that Sonny [Lee Sung Jin] and Joanna [Calo] both worked on this season. We worked together on Season 1 of Beef and on Thunderbolts*. They have come in and are working on a draft right now, which is really exciting to be able to put that group of people together again.”

Lee is the creator and showrunner of the Emmy-winning Netflix series Beef, while Calo serves as co-showrunner and writer on FX’s The Bear, two of the most decorated drama series in recent television history.

Why These Writers? Schreier Has a Clear Answer.

Schreier was explicit about what he believes the X-Men story demands, and why Lee and Calo are uniquely equipped to deliver it.

“When you go back and read X-Men comics, there’s ideology, but also interpersonal drama, almost of a soap opera quality,” Schreier said. “Having writers who understand both how to drive ideology from personal stakes, if we get that right, that’s what will feel most honest to what X-Men can be.”

He singled out what he most admires about Lee’s work: “the ability to take small interpersonal dynamics and explode them onto a much larger canvas”, describing it as central to the film’s emotional ambition.

Lee, for his part, made clear the assignment carries personal weight. In a separate interview with Collider, Lee said, “I hold these characters near and dear to my heart, and I think Jake has such a clear vision of what he wants to accomplish with this movie. Joanna and I are just here to service the greatest story, and we’re very honoured to be a part of it. I’m over the moon.”

A Long Road to the Current Draft

The X-Men reboot script has passed through multiple hands before reaching Lee and Calo. According to Variety, Aaron Rabin (Tom Clancy’s Jack Ryan) and Zach Dean (The Tomorrow War) produced the earliest drafts, before Michael Lesslie, known for The Hunger Games: The Ballad of Songbirds and Snakes, was brought in to revise the screenplay. Lesslie has since moved on to other projects.

Lee and Calo are now working on the current iteration, with Schreier keeping all plot details tightly under wraps.

“We’ll film in a little black box and never leave,” Schreier said, when asked about Marvel’s customary secrecy around the project.

Marvel’s Mutant Timeline

The X-Men film is widely expected to arrive after the dual Avengers event films reshape the MCU. Avengers: Doomsday opens December 18, 2026, followed by Avengers: Secret Wars in 2027, a reset event that is expected to clear the runway for the X-Men’s full franchise debut, tentatively projected for 2028.

Marvel Studios president Kevin Feige has previously indicated the reboot will skew toward a younger ensemble. “X-Men, as it was in the comics, will be a very youth-oriented, focused, and cast movie,” Feige said at a prior press event, according to AOL/Screenrant.

Schreier echoed that ambition while keeping expectations grounded. “We have to make one great movie,” he said.

With two of television’s most acclaimed writer-showrunners actively shaping the script, that goal may now be closer than it has ever been.

The BriefLedger Verdict

This is the most “un-Marvel” hiring choice in years—and that’s exactly why it’s exciting. After the success of X-Men ’97, the bar for the live-action reboot is incredibly high. By bringing in writers who specialize in character “messiness,” Marvel is finally treating the X-Men like the complex drama it was always meant to be.