New Avengers: Doomsday Plot Leak Unveils An 'Invincible Avengers' Team Formed - The Cosmic Wonder (2025)

• Warren Thompson
• June 9, 2025

Marvel Studios’ Avengers: Doomsday is shaping up to be an absolute multiversal beast of a film , with a recent leak spilling details about its plot, characters, and multiversal stakes. While leaks should always be taken with a grain of salt, the reported details align with the Russo Brothers’ ambitious vision for the Marvel Cinematic Universe’s (MCU) next chapter. Here’s a deep dive into the leaked information, breaking down the incursion-driven storyline, Doctor Doom’s master plan, and the powerhouse roster of heroes set to clash in this epic showdown. This rumor stems from James Mackwl via X.

The Incursion Crisis and a Multiversal War

The heart of Avengers: Doomsday lies in the concept of incursions—catastrophic collisions between realities that threaten to unravel the entire multiverse. According to the leak, the film centers on a climactic battle between Earth-616 (the MCU’s main universe) and a divergent X-Men universe, potentially inspired by the X-Men: Days of Future Past continuity. This collision sets the stage for a high-stakes conflict that pits the Avengers against the X-Men, with Doctor Doom pulling the strings.

Key Plot Points

• The Final Incursion: Earth-616 faces a devastating collision with a parallel X-Men universe, forcing heroes from both sides to confront the collapse of their realities.
• Doctor Doom’s Vendetta: Played by Robert Downey Jr., Victor Von Doom despises the Time Variance Authority (TVA) and Kang, blaming them for the multiverse’s chaos. His plan culminates in a multiversal war within the TVA, setting up a climactic showdown.
• Loki as the McGuffin: Loki, portrayed by Tom Hiddleston, is central to the plot, with heroes racing to protect him at the Citadel at the End of Time. His role remains mysterious, but his fate post-Loki Season 2 is a major question mark.
• Monica Rambeau’s Role: The Avengers, led by Sam Wilson (Anthony Mackie), are tasked with rescuing Monica Rambeau, who may be an Anchor Being causing the incursion, unknowingly pulling the two universes together.

Doctor Doom’s Twisted Vision – Battleworld

Robert Downey Jr.’s return to the MCU as Doctor Doom is a seismic shift, and the leak suggests his character is far from a straightforward villain. Doom believes he’s the multiverse’s savior, aiming to stop incursions by unifying all realities into a single Battleworld under his iron-fisted rule. This echoes Thanos’ mindset in Avengers: Infinity War, where catastrophic actions were justified as necessary for survival.

Doom’s Strategy

• Manipulating Tony Stark’s Legacy: Rumors suggest Doom may exploit his resemblance to Tony Stark to infiltrate the MCU, posing as an ally to manipulate the Avengers.
• Sentinels and the X-Men: Leaked set images reveal destroyed Sentinels in front of the X-Mansion, hinting at Doom using these iconic mutant-hunting machines to battle the X-Men.
• Connection to the Fantastic Four: Doom kidnaps Franklin Richards, the son of Reed Richards and Sue Storm, taking him to “Universe X,” forcing the Fantastic Four to join the fight.

The New Avengers Roster: A Multiversal Team-Up

The leak reveals a stacked roster of heroes, blending established Avengers, new faces, and returning X-Men from the Fox universe. This eclectic team, dubbed the “Invincible Avengers” in concept art, is tasked with resolving the incursion and stopping Doom’s plan.

Confirmed and Rumored Characters

• Core Avengers:
  • Sam Wilson / Captain America (Anthony Mackie)
  • Thor (Chris Hemsworth)
  • Captain Marvel (Brie Larson)
  • Shang-Chi (Simu Liu)
  • Ant-Man / Scott Lang (Paul Rudd)
  • She-Hulk / Jennifer Walters (Tatiana Maslany)
• Thunderbolts and Allies:
  • Yelena Belova (Florence Pugh)
  • Bucky Barnes / Winter Soldier (Sebastian Stan)
  • Bob / Sentry (Lewis Pullman)
• Wakandans and Others:
  • Shuri (Letitia Wright)
  • M’Baku (Winston Duke)
  • Namor (Tenoch Huerta)
  • Bruce Banner / Hulk (Mark Ruffalo)
• Fantastic Four:
  • Reed Richards (Pedro Pascal)
  • Sue Storm (Vanessa Kirby)
  • Johnny Storm (Joseph Quinn)
  • Ben Grimm / The Thing (Ebon Moss-Bachrach)
• X-Men Returns:
  • Charles Xavier (Patrick Stewart)
  • Beast (Kelsey Grammer)
  • Cyclops (James Marsden)
  • Nightcrawler (Alan Cumming)
  • Mystique (Rebecca Romijn)
• Additional Heroes:
  • Doctor Strange (Benedict Cumberbatch)
  • Spider-Man (Tom Holland, potentially in a Symbiote suit)
  • Wong (Benedict Wong)
  • Nomad (Chris Evans, rumored)
  • X-23 (Dafne Keen)
  • Gambit (Channing Tatum)

Final Thoughts

Avengers: Doomsday promises to be a pivotal chapter, blending the Avengers, Fantastic Four, and X-Men in a multiversal war that could(and should) reshape the MCU. The return of Robert Downey Jr. as Doctor Doom, combined with the Russo Brothers’ knack for epic storytelling, sets the stage for a film that could rival Avengers: Endgame in scope. With ties to Avengers: Secret Wars (set for December 17, 2027), this movie marks the beginning of the MCU’s endgame, potentially leading to a soft reboot that integrates mutants into the main timeline.