Avengers: Doomsday Rumor Roundup Teases New Fantastic Four Member, Valhalla Army, and More

Leaks suggest major character deaths, alternate alliances, and connections to earlier Marvel projects in the upcoming Avengers film.

Published on Mar. 6, 2026

Got story updates? Submit your updates here. ›

Recent rumors about the upcoming Marvel film Avengers: Doomsday suggest several possible storylines involving Doctor Doom, the multiverse, and returning MCU characters. Multiple unconfirmed reports have surfaced about major character deaths, alternate alliances, and connections to earlier Marvel projects like the Loki series. While Marvel Studios has not officially confirmed these details, the rumor roundup includes claims of a new Fantastic Four member, the return of deceased Asgardians to aid Thor, and Doctor Doom's potential role in destroying the multiverse.

Why it matters

As one of the most highly anticipated Marvel Cinematic Universe films, Avengers: Doomsday is expected to have major implications for the future of the franchise. These unverified leaks provide a glimpse into potential plot points and character arcs that could significantly shape the direction of the MCU, especially as it relates to the multiverse and the introduction of the Fantastic Four.

The details

According to the rumor roundup, Avengers: Doomsday will feature several notable developments, including the rumored appearance of Thor's Valhalla army, which is said to include deceased Asgardians like Jane Foster, Heimdall, Loki, and the Warriors Three. The Loki Disney+ series is also reported to play a key role in the film's multiverse storyline, potentially leading to a scene where Loki warns Steve Rogers about the Time Variance Authority's plans. Additionally, a rumor suggests that Reed Richards and Sue Storm's daughter, Valeria, may join the Fantastic Four team, with Doctor Doom reportedly assisting in her birth. Other unconfirmed details include the possibility of Falcon dying early in the film, Doctor Strange working for Doom, and a shapeshifter impersonating Peggy Carter to deceive Steve Rogers.

  • Avengers: Doomsday is scheduled for release in theaters on December 18, 2026.
  • The Loki Disney+ series, which is rumored to be key to the film's multiverse storyline, premiered in 2021.

The players

Avengers: Doomsday

An upcoming Marvel Cinematic Universe film that is expected to bring together the Avengers, the Fantastic Four, and the X-Men to face off against Robert Downey Jr.'s Doctor Doom.

Doctor Doom

The main antagonist in Avengers: Doomsday, who is rumored to play a central role in the film's multiverse storyline and the destruction of various timelines.

Loki

The Disney+ series that is rumored to be crucial to the events of Avengers: Doomsday and its multiverse plotline.

Valeria

The daughter of Reed Richards and Sue Storm, who is reportedly set to join the Fantastic Four team in Avengers: Doomsday.

Falcon

A character who is rumored to have an early death in Avengers: Doomsday, despite previously appearing in The Falcon and the Winter Soldier and Captain America: Brave New World.

Got photos? Submit your photos here. ›

What they’re saying

“Lead them into battle, my son.”

— Odin (Reported by scooper MAJESTIC_ucm)

“Loki only has 2 or 3 scenes in Avengers Doomsday.”

— MyTimeToShineHello, Scooper (Reported by MyTimeToShineHello)

“When Doom destroy the TVA he makes sure to also destroy every time branch except ONE.”

— MyTimeToShineHello, Scooper (Reported by MyTimeToShineHello)

“Loki 'is very important.' He also claimed a scene may show Loki warning Steve Rogers that the TVA plans to prune his timeline, potentially leading to an incursion.”

— Jeremy Conrad, Insider (Reported by Jeremy Conrad)

“I mean... not really.”

— MyTimeToShineHello, Scooper (Responding to a rumor about Doctor Strange 2 having heavy connections to Avengers: Doomsday)

What’s next

Marvel Studios is expected to provide more official details and confirmations about the plot and characters of Avengers: Doomsday as the film's release date in December 2026 approaches.

The takeaway

The unverified rumors surrounding Avengers: Doomsday suggest that the film will have major implications for the future of the Marvel Cinematic Universe, particularly in terms of the multiverse, the introduction of the Fantastic Four, and the potential demise of key characters. While Marvel has not confirmed these details, the speculation highlights the high level of anticipation and interest surrounding this upcoming Avengers installment.