New Avengers: Secret Wars Leak Hints at God Doom and Battleworld

Note: This post contains potential spoilers for Avengers: Doomsday and Secret Wars.

A new leaked report from Marvel’s Avengers: Secret Wars confirms that Robert Downey Jr.‘s Doctor Doom will be succeeding in his plan at the end of Avengers: Doomsday. It is reported that, at the end of Doomsday, Doctor Doom uses godlike power to create his own world, called Battleworld.

According to insider James Mack, who leaked major plot details for Avengers: Doomsday, he has now revealed some important information on Avengers: Secret Wars. Like in the comics (Marvel’s 2015 Secret Wars storyline), after the multiverse is destroyed, Doom creates his own world, and all the heroes forget their past lives and serve God Emperor Doom. Only a small group of surviving heroes (like Reed Richards, Black Panther, and a few others) try to reverse the situation, overthrowing Doom and his absolute power over the world.

The insider also reported that there will be a fight between the Avengers and the X-Men in Avengers: Doomsday. Doctor Doom will have the ability to control machines and robots through runes, taking command of the X-Universe Sentinels. The plot already hinted at Doctor Doom using powerful magic.

Previously leaked concept art for Secret Wars on ArtStation by one of Marvel’s former concept artists already revealed that Avengers: Secret Wars reportedly adopts an ancient, medieval style reminiscent of the 1602 universe from What If…?. Some of the art shows a kingdom on Battleworld, where Doom resides, featuring castles and a mythical vibe.

A new report from Daniel Richtman mentions that Marvel Studios is planning to release the first teaser trailer for Avengers: Doomsday on the same day as James Cameron’s Avatar: Fire and Ash, both in theaters and online.

Avengers: Secret Wars is expected to begin filming in mid-2026.

Doomsday is directed by the Russo brothers from a screenplay by their longtime collaborator Stephen McFeely and Michael Waldron. The film features cinematography by Newton Thomas Sigel (Bohemian Rhapsody, X-Men: Days of Future Past) and production design by Kasra Farahani.

Here’s the plot synopsis for Avengers: Doomsday, revealed by Disney China:

“Doctor Doom has officially arrived on the Marvel Cinematic Universe stage. This villain, a master of cutting-edge science and powerful magic, will unleash a cascading crisis across the multiverse. Marvel’s most iconic actor, Robert Downey Jr., also returns as Doctor Doom!”

As of now, the announced cast members of Avengers: Doomsday are: Downey Jr. as Doctor Doom, Paul Rudd as Ant-Man, Simu Liu as Shang-Chi, Tom Hiddleston as Loki, Florence Pugh as Yelena Belova, Danny Ramirez as Falcon, Sebastian Stan as Bucky Barnes, Winston Duke as M’Baku, Hemsworth as Thor, Letitia Wright as Black Panther, Tenoch Huerta Mejía as Namor, Anthony Mackie as Captain America, David Harbour as Red Guardian, Wyatt Russell as U.S. Agent, and Hannah John-Kamen as Ghost. Ian McKellen as Magneto, Patrick Stewart as Professor X, Rebecca Romijn as Mystique, James Marsden as Cyclops, Kelsey Grammer as Beast, Alan Cumming as Nightcrawler, and Channing Tatum as Gambit. Pascal as Reed Richards (Mr. Fantastic), Vanessa Kirby as Sue Storm (Invisible Woman), Joseph Quinn as Johnny Storm (Human Torch), Ebon Moss-Bachrach as Ben Grimm (The Thing), and Lewis Pullman as Sentry.

Produced by Kevin Feige, Louis D’Esposito, and Russo Brothers will produce through their AGBO banner.

Avengers: Doomsday will be released in theaters and IMAX across the United States on December 18, 2026, and Avengers: Secret Wars is scheduled for release on December 17, 2027.