Ryan Reynolds and Hugh Jackman have joined the writing credits of Avengers: Doomsday, appearing alongside Destin Daniel Cretton in a newly published Writers Guild of America (WGA) listing. The development adds an unexpected wrinkle to Marvel Studios' increasingly elaborate multiverse spectacle. With the blockbuster approaching its theatrical debut, even its behind-the-scenes credits are giving fans another reason to scrutinize the fine print.

For a franchise that has turned post-credit sequences into an art form, the latest revelation comes from somewhere considerably less cinematic: an official guild database. And the names appearing there make for an intriguing discovery.

The WGA's official listing for Avengers: Doomsday, updated with final credits dated October 21, 2026, identifies Stephen McFeely and Michael Waldron as the film's principal credited writers. Both are credited with writing the feature, which is based on Marvel Comics. However, the additional literary material section has attracted particular attention because it includes Ryan Reynolds, Hugh Jackman, and Destin Daniel Cretton.

The same category also lists Eric Pearson, Chris McKenna, Erik Sommers, Jeff Loveness, and Andrew Lanham, alongside McFeely and Waldron. Importantly, the WGA specifies that this additional material is not on-screen. This is distinct from the film's principal screenplay credit and does not establish that Reynolds or Jackman wrote the entire movie. Reynolds, of course, has previous screenwriting experience through Deadpool 2 and Deadpool & Wolverine. 

The additional literary material designation recognizes writing contributions that do not necessarily translate into visible screenplay authorship. Cretton, meanwhile, previously worked on the film during its earlier development before returning to his other Marvel commitments.

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Marvel has also been using its recent releases to quietly seed developments surrounding Doctor Doom, with some of the most revealing clues arriving through unexpected post-credit appearances and previously theatrical footage. Another opportunity to catch those details is now heading to streaming.

Marvel's latest revelations are not confined to the WGA database. Following the VisionQuest finale's surprise post-credit sequence, the studio is preparing to bring several more Avengers: Doomsday connections to streaming audiences through Avengers: Endgame Encore.

Disney+ has confirmed that the updated version of the 2019 blockbuster will arrive on November 13. Featuring revised color grading and approximately four additional minutes of footage, the re-release contains several new sequences connecting the events of Endgame to the upcoming Avengers installment. Among the revelations are Doctor Doom confronting Bruce Banner, Loki visiting Steve Rogers and Peggy Carter, and developments involving the TVA and the multiverse. Another sequence teases Doom forging his mask. 

These developments follow VisionQuest's finale, which featured Doctor Doom discovering the Scarlet Witch beneath the rubble of Mount Wundagore and attempting to claim her powers. With both Wanda Maximoff and the Hulk now connected to Doom's mysterious plans, Marvel appears to be laying several narrative threads ahead of the December showdown. 

With Ryan Reynolds and Hugh Jackman now appearing in the additional literary material credits, Avengers: Doomsday has another intriguing behind-the-scenes development. 

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What do you make of their writing contributions? Share your thoughts in the comments.