

According to the information on the Writer’s Guild of America website, the Russo Brothers' upcoming film Avengers: Doomsday has 10 screenwriters, including Deadpool and Wolverine stars Hugh Jackman and Ryan Reynolds. While Reynolds' screenwriting credits include Deadpool 2 (2018) as well as Deadpool and Wolverine, Jackman makes his debut as a scenarist with Avengers: Doomsday.
Loki creator Stephen McFeely and Doctor Strange Strange in the Multiverse of Madness writer Michael Waldron share the main screenwriting credits for the upcoming Avengers film. On the other hand, additional literary material credits (not onscreen) belong to Waldron, McFeely, Eric Pearson, Erik Sommers, Chris McKenna, Jeff Loveness, Destin Daniel Cretton, Andrew Lanham, Jackman, and Reynolds. According to the aforesaid website, the term 'additional literary material' refers to "an official film credit introduced by the Writers Guild of America to recognize Guild-contracted writers who contributed writing services to a theatrical feature but did not qualify for a traditional primary writing credit."
While Destin Daniel Cretton was attached to direct the film from a Jeff Loveness screenplay at a time it was called The Kang Dynasty, it was reworked subsequently after Disney terminated Jonathan Majors.
Then, Cretton exited the project, with Joe and Anthony Russo joining it with McKenna, McFeely, Waldron and Sommers to change the focal point of the story to Doctor Doom, played by Robert Downey Jr.
Coming back to Reynolds, the actor responded to a social media user's post featuring the screenshot of the Writer’s Guild of America website that cites the Avengers: Doomsday screenwriters. Responding to the user's question about whether he and Jackman have written the film in parts, Reynolds shared the following clip from Deadpool and Wolverine on X in a cryptic message.
The latest piece of news about Avengers: Doomsday has sparked some speculation about whether Reynolds and Jackman also star in the film as Deadpool and Wolverine, respectively. Could it be that the actors wrote the lines for their characters in the film? It remains uncertain, but the prospect of their reunion in the Avengers film has excited fans.