AVENGERS: DOOMSDAY - Rumored Plans For Sentry, Loki, Dr. Strange, [SPOILER], And More Revealed

AVENGERS: DOOMSDAY -  Rumored Plans For Sentry, Loki, Dr. Strange, [SPOILER], And More Revealed

The first trailer for Avengers: Doomsday is just around the corner, but if you want to know what the movie has in store for some key characters, check out these latest rumors...

By MarkCassidy - Dec 09, 2025 09:12 PM EST
Filed Under: Avengers: Doomsday

We're very close to the first teaser trailer for Avengers: Doomsday (it's expected to release online before it screens in theaters ahead of Avatar: Fire and Ash), but this first glimpse at the next MCU event movie is unlikely to reveal much about the plot or the characters.

There have been plenty of rumors, of course, and thanks to the latest Cosmic Circus Q&A, we can now add a few more (purported) details on certain heroes and villains that will play key roles in the film

There are no major reveals - at least, nothing that hasn't previously been rumored - but mild spoilers will follow.

Those hoping to see more of Thunderbolts' The New Avengers' Sentry in action in Doomsday might be disappointed to hear that he may be in "Bob mode" for a good chunk of the film.

"Sentry is… Bob. He’s just trying to be relaxed and be chill throughout the movie. It isn’t until Yelena is in a precarious situation that he’s forced to bring out Sentry."

As for Doctor Strange, Perez believes that he "will investigate incursions with Clea and find ways to fix them before the Multiverse collapses."

We had been led to believe that Jeremy Renner might be back as Clint Barton, and while he might return for Secret Wars, Perez doesn't expect to see him - or War Machine - in Doomsday.

"Rhodey is currently in recovery since the events of Secret Invasion, and Marvel is still reeling with that fallout. And Clint is retired. I don’t know if they’ll be back."

Bucky Barnes is said to "be one of the main core players when it comes to trying to be the mediator between the Avengers and the Thunderbolts*," while Shuri will reportedly "be appealing to Namor and the Atlanteans to help in the fight against Doom."

Perez was asked if Peggy Carter will actually see any action in the movie, and responded: "Hayley Atwell will be a part of the action for Doomsday. Notice the wording of this sentence." Does this mean Atwell will suit up as Captain Carter, perhaps?

As for Steve Rogers, Perez says he will have a "significant role," reiterating a previous rumor that "Doom will be after him."

Finally, Perez shared some intriguing details on Loki and some of the "cameos" that have yet to be announced.

The God of Stories will reportedly "take the place of The Beyonders" in this movie, while Deadpool and "most of these cameos will have a part to play in the story. One of those things will be to see the effects of the incursions in their respective universes and be called upon by a 'higher authority' for the fight." 

Remember, all of these details should be taken as rumor for the time being. 

Avengers: Doomsday and Avengers: Secret Wars were recently hit with significant delays, with Doomsday now set to arrive in theaters on December 18, 2026, and Secret Wars positioned for December 17, 2027.

Both movies will be directed by the Russo brothers, who also make their MCU return after helming Captain America: The Winter Soldier, Captain America: Civil War, Avengers: Infinity War and Avengers: Endgame

"Being able to create stories and explore characters within the Marvel Universe fulfilled a life-long dream of ours, and we discovered a powerful connection with audiences in each film that we made. We’re thrilled to collaborate once again with Kevin, Lou and the entire Marvel team to bring this epic adventure in storytelling to new and surprising places for both the fans and ourselves”, said The Russos in a statement after the SDCC panel.

Doomsday will star:

Paul Rudd as Ant-Man, Simu Liu as Shang-Chi, Tom Hiddleston as Loki, Lewis Pullman as Sentry, Florence Pugh as Yelena, Danny Ramirez as Falcon, Ian McKellen as Magneto, Sebastian Stan as Bucky, Winston Duke as M’Baku, Chris Hemsworth as Thor, Kelsey Grammer as Beast, James Marsden as Cyclops, Channing Tatum as Gambit, and Wyatt Russell as U.S. Agent

Along with Vanessa Kirby as Sue Storm, Rebecca Romijn as Mystique, Patrick Stewart as Professor X, Alan Cumming as Nightcrawler, Letitia Wright as Black Panther, Tenoch Huerta Mejia as Namor, Pedro Pascal as Reed Richards, Hannah John-Kamen as Ghost, Joseph Quinn as Johnny Storm, David Harbour as Red Guardian, Ebon Moss-Bachrach as The Thing, Anthony Mackie as Captain America, and, of course, Robert Downey Jr. as Doctor Doom.

About The Author:
MarkCassidy
Member Since 11/9/2008
Mark Cassidy is a writer, photographer, amateur filmmaker, and Rotten Tomatoes-approved critic from Dublin, Ireland.
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Battinson
Battinson - 12/9/2025, 9:38 PM
Sounds fun
Mrnorth1921
Mrnorth1921 - 12/9/2025, 9:48 PM
If true, this is a good way to get rid of Sentry without nerfing him for the plot. Obviously, he’s gonna be in the top 3 or 5 characters left in the multiverse.
Matchesz
Matchesz - 12/9/2025, 9:57 PM
“Sentry is… Bob. He’s just trying to be relaxed and be chill throughout the movie.”

I think my nephew wrote the script
ImNotaBot
ImNotaBot - 12/9/2025, 10:15 PM
Outside of his origin and a few of his powers, Sentry/Bob are pretty much very comicbook accurate. I still don't know how i feel about bringing back Steve Rogers, it makes sense he being the reason of all the incursions but i really like how they ended up things with Cap.

Also isn't old man Steve the main MCU one that caused the incrusions? If they are bringing young Steve Rogers right after Endgame isn't he a variant? If that is the case there are probably a lot of Steve Rogers that defeated Thanos causing a lot of incursions and not just a single one.
Mrnorth1921
Mrnorth1921 - 12/9/2025, 10:26 PM
@ImNotaBot - I think they will somehow tie the end of endgame to this. Time isn’t linear. So the Cap you see at that end of that movie is the same one. No variants.

Steve just had some more wacky adventures before he got old.
TheVisionary25
TheVisionary25 - 12/9/2025, 10:55 PM
Honestly , I could more or less see all these being true tbh though some just seem obvious imo…

Given that in the Thunderbolts post credit scene , we got Bob saying that he was trying to not turn into the Sentry in order to stop The Void from coming out then it makes sense that he’s still trying to do that until Yelena (who we saw in the film that he developed a bond with) is put in danger which would then be apt for him to unleash his powers.

Bucky being a mediator between both teams seems appropriate given his relationship with Sam aswell as Shuri being the one to try to appeal to Namor for his help.

The Loki thing is interesting though and it makes me wonder if he will take the place of the Beyonders for Doom then what if Franklin is his Molecule Man in this?.

Also if Strange & Clea are in this and are traveling the multiverse trying to stop incursions then I could see them being the ones to find out about Doom and inform the others!!.
ModHaterSLADE
ModHaterSLADE - 12/9/2025, 10:59 PM
Rhodey has just been sidelined for the longest🤦🏾‍♂️
Feralwookiee
Feralwookiee - 12/10/2025, 12:32 AM
Source: Cosmic Circus

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RolandD
RolandD - 12/10/2025, 10:02 AM
@Feralwookiee - Have we sunk this low?
Feralwookiee
Feralwookiee - 12/10/2025, 2:43 PM
@RolandD - User Comment Image
RolandD
RolandD - 12/10/2025, 8:02 PM
@Feralwookiee - User Comment Image
MarvelZombie616
MarvelZombie616 - 12/10/2025, 3:23 AM
As a livelong Marvel comics fan i can say thst this sounds completely bad.
All of it.
Loki taking the place of the Beyonders?

Secret Wars was a great comic book series that took the established Heroes and Villains and put them against each other.

I don't see any cool established villains here.

Doom has just appeared in an aftercredit scene.
Ultron is assumed to be destroyed.
Absorbing Man is non-canon in Agents of S.H.I.E.L.D.
Titania was wasted in She-Hulk.
Ulysses Klaw was killed in Black Panther.

Nobody even knows the F4.

This is set to disappoint.
RolandD
RolandD - 12/10/2025, 10:04 AM
@MarvelZombie616 - Secret Wars was a comic book series that took the established Heroes and Villains and put them against each other that was necessary to sell some toys. That’s better.
Feralwookiee
Feralwookiee - 12/10/2025, 2:45 PM
@MarvelZombie616 - Good points here and sadly, I agree.
I'm hoping for the best, but I'm not expecting much.
SteviesRightFoo
SteviesRightFoo - 12/10/2025, 3:51 AM
Throwing excrement at the wall
ObserverIO
ObserverIO - 12/10/2025, 4:20 AM
"[Bucky is] the mediator between the Avengers and the Thunderbolts*" I hope this is all just the opening 10 minutes before we get to the main characters and not the whole movie. Please tell me this isn't just a Thunderbolts and Sam Wilson's Avengers flick.

And Loki in place of the Beyonders?
Nope. Don't like that at all.

You've already introduced the Celestials and set up the judgment. Now introduce the Beyonders as their instruments of destruction. The Beyonders are the ones behind all the incursions. The secret puppeteers.

You need the Beyonders in this.

And the Celestials. At the very least that one moment of judgment with Arishem.
Spike101
Spike101 - 12/10/2025, 5:16 AM
There are no spoilers here as it’s purely guess work and anyone who thinks otherwise is just kidding themselves.
RolandD
RolandD - 12/10/2025, 10:05 AM
@Spike101 - WHAT? Isn’t the Cosmic Circus a reputable source?😂
Spike101
Spike101 - 12/10/2025, 4:40 PM
@RolandD - maybe for fairly tales but not much else 🤭
RolandD
RolandD - 12/10/2025, 8:04 PM
@Spike101 - Grace Randolph told me that they were reputable.
Spike101
Spike101 - 12/11/2025, 8:11 AM
@RolandD - well in that case….
Lokiwasright
Lokiwasright - 12/10/2025, 6:57 AM
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