Ryan Reynolds has cast doubt on the possibility of Deadpool joining the ranks of either the Avengers or the X-Men, stating that such a move would signify the character's "end." This comes after the massive success of Deadpool & Wolverine, where Deadpool's desire to join the Avengers was a central theme, leading some to believe that Marvel Studios might be eager to see the 'Merc with a Mouth' team up with icons like Captain America and Professor X in the upcoming Avengers: Doomsday.

Last month's Avengers: Doomsday cast reveal featured a significant number of veteran X-Men actors, including Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, and James Marsden, confirming the X-Men's substantial role in the film. Grammer, who played Beast in the Fox X-Men franchise, made his MCU debut in The Marvels' post-credits scene. Stewart portrayed Charles Xavier/Professor X in the X-Men films and had a brief appearance in the MCU's Doctor Strange in the Multiverse of Madness as part of the Illuminati. Meanwhile, McKellen (Magneto), Cumming (Nightcrawler), Romijn (Mystique), and Marsden (Cyclops) are yet to appear in the MCU, sparking speculation about whether Avengers: Doomsday might be setting the stage for an Avengers vs. X-Men showdown.

Despite these developments, Reynolds' name was notably absent from the confirmed cast list for Avengers: Doomsday, although Channing Tatum, who played Gambit in Deadpool & Wolverine, made the cut. Reynolds' recent comments to Time magazine further suggest that a formal promotion to the Avengers or X-Men is not in Deadpool's future. "If Deadpool becomes an Avenger or an X-Man, we're at the end," Reynolds stated. "That's wish fulfillment, and you can't give him that."

However, Reynolds hinted that a surprise cameo in a supporting role might be more fitting for Deadpool, citing the positive reception to Wesley Snipes' cameo as Blade in Deadpool & Wolverine. As for what's next for Deadpool, Reynolds mentioned he is currently working on a new project that involves an "ensemble," though he remained tight-lipped about the details. This could potentially mean another Deadpool film with a focus on cameos, similar to Deadpool & Wolverine, possibly including characters like Snipes' Blade, Tatum's Gambit, Jennifer Garner's Elektra, and Dafne Keen's Laura Kinney/X-23.

Deadpool & Wolverine: Easter Eggs, Cameos and References

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As for Avengers: Doomsday, details beyond the cast list remain scarce. Anthony Mackie, who will reprise his role as Sam Wilson/Captain America, recently expressed his belief that the film will recapture the classic Marvel feeling that fans have always cherished. Mackie joins other cast members like Paul Rudd (Ant-Man) and Joseph Quinn (Human Torch) who have shared their excitement about the project. Additionally, a purported set photo leak from Avengers: Doomsday has stirred the MCU fandom, with some interpreting it as ominous for the X-Men.

Speculation has also arisen about Oscar Isaac potentially appearing as Moon Knight in Avengers: Doomsday, fueled by his withdrawal from this month's Star Wars Celebration due to scheduling conflicts. Marvel Studios producer Kevin Feige has confirmed that the Avengers livestream did not reveal the entire cast of Doomsday, stating, "We revealed many, not all," during a video call at CinemaCon.