Ryan Reynolds has cast doubt on the possibility of Deadpool joining either the Avengers or the X-Men, suggesting that such a move would signify the end of the character's journey. In a recent interview with Time, Reynolds stated, "If Deadpool becomes an Avenger or an X-Man, we're at the end. That's wish fulfillment, and you can't give him that." This comes despite the character's clear desire to join the Avengers, as seen in the successful film *Deadpool & Wolverine*, leading to speculation about his potential inclusion in next year's *Avengers: Doomsday*.
The cast reveal for *Avengers: Doomsday* last month included several veteran X-Men actors such as Kelsey Grammer, Patrick Stewart, Ian McKellen, Alan Cumming, Rebecca Romijn, and James Marsden, confirming a significant X-Men presence in the film. Grammer, who played Beast in the Fox X-Men franchise, made his MCU debut in *The Marvels'* post-credits scene. Stewart, known for his role as Charles Xavier/Professor X, appeared in the MCU via *Doctor Strange in the Multiverse of Madness*. However, McKellen, Cumming, Romijn, and Marsden have yet to make their MCU debuts. This heavy X-Men involvement has led to speculation that *Avengers: Doomsday* might secretly be an Avengers vs. X-Men movie.
Despite the excitement around the cast, Reynolds' name was notably absent from the list of confirmed stars for *Avengers: Doomsday*, although Channing Tatum, who played Gambit in *Deadpool & Wolverine*, was included. Reynolds hinted that a surprise cameo as Deadpool might be more fitting, citing the positive reception to Wesley Snipes' cameo as Blade in *Deadpool & Wolverine*.
Looking ahead, Reynolds is currently working on a new project that involves an "ensemble," though he remained tight-lipped about the details. He emphasized his preference for keeping Deadpool "isolated," suggesting that future projects might continue to feature a strong focus on cameos, similar to *Deadpool & Wolverine*. Potential characters for future appearances include Snipes' Blade, Tatum's Gambit, Jennifer Garner's Elektra, and Dafne Keen's Laura Kinney/X-23.
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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, expressed optimism about the film, stating it would "give the audience that old Marvel feeling that they always had." Other cast members, including Paul Rudd as Ant-Man and Joseph Quinn as the Human Torch, have also shared their excitement. Additionally, a set photo leak has stirred the MCU fandom, with some interpreting it as a bad omen for the X-Men.
Speculation about Oscar Isaac potentially appearing as Moon Knight in *Avengers: Doomsday* has been 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 include the entire cast of *Doomsday*, hinting at more surprises to come.