MCU Rumor Roundup: Castle Doom Location Revealed, "Mystical" Black Panther 3, VisionQuest Cameo, More

In our latest MCU rumor roundup, we're sharing updates on the filming location for Doctor Doom's castle, the latest on plans for Black Panther 3, and possible spoilers for VisionQuest and more.

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By JoshWilding - Apr 17, 2026 01:04 PM EST

Filed Under: Black Panther

While all eyes are on Avengers: Doomsday after Marvel Studios brought the first trailer to CinemaCon, that's far from the only MCU project on the horizon that's worth getting excited about.

We do have a possible first look at Castle Doom in this MCU rumor roundup, but that's not all. You'll also find intel on Black Panther 3, a hint about the Kingpin's MCU future, and potentially major spoilers for VisionQuest and Avengers: Doomsday.

Check out these latest MCU rumors below, and when you're done, make sure you head down to the comments section to share your thoughts on them.

Starting with The Cosmic Circus, Letitia Wright will reportedly return as Shuri in Black Panther 3, which is leaning heavily "into the mystical aspect of Wakandan lore and mythology." There will also be connections to the lore introduced in Marvel Animation's Eyes of Wakanda.
The report also hints that a Marvel Television character—from the pre-Disney+ era—will return in the threequel.

Sharing some insights into what we can expect from the MCU's Young Avengers/Champions, it's said, "Kate and Kamala are learning to lead. Cassie and America learn to belong to something bigger than themselves after coping with isolation and being the lone-wolf types for so long. Billy and Tommy are bonding and learning to adapt to their current situation."
It sounds like VisionQuest will feature an appearance from Ms. Marvel.

Ahead of The Punisher's leap to the big screen in Spider-Man: Brand New Day, the site hints at more small-screen superheroes appearing in movies.
While Daredevil: Born Again is moving on from the Mayor Fisk storyline after Season 2, we may still eventually get Marvel Studios' take on Devil's Reign. "The Devil can reign in more than one way," the site posits. "What we’ll see now is the conclusion of Fisk’s plan. Hint: He never wanted to be mayor; just look at the very little competition he has left."

According to @MyTimeToShineH, while Ms. Marvel is in Avengers: Doomsday, neither Captain Marvel nor Monica Rambeau is currently set to appear. They go so far as to say that the latter "dies off-screen," which contradicts recent claims about her being what brings the Avengers and X-Men together.

The insider has also said that a new Luke Cage project is in development at Marvel Studios.

We may have a first look at Doctor Doom's castle in Latveria. Apparently, Avengers: Doomsday quietly shot at the UK's Alton Towers theme park earlier this year, and judging by the photos below, the castle there would make a fitting Doomstadt...

BREAKING 🚨:

Alton Towers has been confirmed as a filming location for ‘Avengers: Doomsday’, with production taking place earlier this year.

Reports suggest the Towers will serve as the backdrop for Latveria’s “Castle Doom,” the lair of Doctor Doom. pic.twitter.com/6KaqQET5sW
— Fun Amusement Ride Trivia (@FactsAboutParks) April 17, 2026

About The Author:

JoshWilding
Member Since 3/13/2009

Comic Book Reader. Film Lover. WWE and F1 Fan. Rotten Tomatoes-approved critic and ComicBookMovie.com's #1 contributor.

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33 Comments

harryba11zack - 4/17/2026, 1:56 PM

TheRevelation - 4/17/2026, 8:29 PM

@harryba11zack -

themawisdead - 4/17/2026, 2:04 PM

The report also hints that a Marvel Television character—from the pre-Disney+ era—will return in the threequel.

Coulson!?

more small-screen superheroes appearing in movies.

excellent. should definitely lean into this, even if said characters are not central focus in whatever film they appear. they'll have all their characters in the same sandbox. best use 'em.

while Ms. Marvel is in Avengers: Doomsday, neither Captain Marvel nor Monica Rambeau is currently set to appear. They go so far as to say that the latter "dies off-screen.

i don't believe this for a second.

While Daredevil: Born Again is moving on from the Mayor Fisk storyline after Season 2, we may still eventually get Marvel Studios' take on Devil's Reign.

yes, please! an oligarch-level Fisk has a lot of potential.

TheVisionary25 - 4/17/2026, 4:27 PM

@themawisdead - Coulson’s a possibility but i was perhaps thinking Daisy

Also yeah , I don’t buy the whole off screen death for Monica either.

themawisdead - 4/17/2026, 4:45 PM

@TheVisionary25 -

yeah, that's also possible.

reason i'm leaning Coulson is becaise they're saying it BP3 will lean mystical and he's obviously in the ether being dead and all lol

also, i would have to assume he was aware of T'Challa, or maybe even T'Chaka, given SHIELD had tabs on everyone back then.

nonserviam - 4/17/2026, 5:49 PM

@themawisdead - But Caulson was Big screen before he was Marvel television.

themawisdead - 4/17/2026, 5:56 PM

@nonserviam -

good point

Malatrova15 - 4/17/2026, 2:07 PM

So Jonatan Majors Is back

themawisdead - 4/17/2026, 2:10 PM

an aside: i finally cracked open Born Again S1 and i think the detractors are TRIPPING.

i quite enjoyed it, even though it felt like a different show. i loved getting to see Matt's life as a lawyer and how the faults in the system begin to justify him returning to his mantle.

the show moved a little too briskly for its own sake, but the conflicts that were set up throughout were all great.

i think rose-colored glasses (no pun intended) for the Netflix show is clouding people's judgement on the charm of this new version, imo. the NF version was not exactly prestige television despite the rep it's gained in the years following.

Lucasberg - 4/17/2026, 2:35 PM

@themawisdead - Born Again season 1 was pretty solid... it ended kind of in a middling way but the promise of season 2 helped with that and season 2 is so far delivering what it should I think.

I still do contend with some of the ways season 1 showed supposed faults in the system: The whole episode where Matt talks about how bad it is that someone went to jail for stealing poundcake (as if thats unjust) was the most ridiculous assertion ever and almost destroyed the show for me haha... does it really need to be spelled out to the showrunners that the people hurt in that scenario are the shop owners who got burglarized, not the burglars robbing a local business? Is Matt Murdoch confused about these points? Anyhow, I take that as remnants leftover from the former born again script before re-writes took hold.

themawisdead - 4/17/2026, 3:11 PM

@Lucasberg -

ha! it's funny you mention that monologue because i had the opposite reading, and it is what solidified how much i was enjoying the show up to that point.

while i agree that it is the shop owner was who was harmed in that particular scenario, that removes the context & what the theif was trying to articulate during his bench meeting with Matt.

i think the point was that however true-believers like Matt like to think the system's consequences are rehabilitative, it often produces the very outcomes it claims it's trying to deter.

TheVisionary25 - 4/17/2026, 4:40 PM

@themawisdead - I agree , I thought it was solid.

Once you watch S2 , I think you’ll realize that it very much feels like a part 1 or setup to to now where we are getting the action & payoff imo (the reason is it was suppose to be one big season of 18 episodes pre-overhaul).

I can understand why some wouldn’t like this take though but I view it as a new writer & artist taking over a comic run with the same characters & focusing on different elements that may appeal some and not to others.

themawisdead - 4/17/2026, 4:58 PM

@TheVisionary25 -

totally!

i'm actually a little annoyed at how they diminished some of the pre-overhaul material with how they have been promoting S2. there's a lot to sink your teeth into if you put aside wanting him to suit up in every episode.

i even like the BB vingnettes as framing devices. it keeps the focus on the NYC streets being the setting and everyday people being at the center of the struggle between Matt & Fisk. a really cool flourish, imo.

TheVisionary25 - 4/17/2026, 5:01 PM

@themawisdead - agreed

I also love how S1 very much feels like a character study of 2 men trying to put away their “true” selves and wear masks that slowly start to come off as the story progresses.

It might be to the detriment of some of the supporting cast since they feel rather surface level but in hindsight , it lays their foundation while S2 (which feels like more of an ensemble narrative) delves deeper into them.

TheVisionary25 - 4/17/2026, 5:03 PM

@themawisdead - I do wish Muse wasn’t as underutilized & such as he ended up being (I feel he was a casualty of the overhaul) since they touch on Muse being his true self and his human alter ego being the mask he wars which would have connected nicely with Matt & Fisk if it was explored more but oh well.

themawisdead - 4/17/2026, 5:09 PM

@TheVisionary25 -

if i have a gripe, Muse's storyline is definitely one.

he kinda just shows up in a really ham-fisted way and is done away with just as clumsily.

i'm not even sure he was needed outside of being a vehicle to get some of the other ancillary characters into the story.

i also really didn't need the needle drops lol

i'd have rathered they kept up the moody atmosphere as opposed to trying to be "cool".

TheVisionary25 - 4/17/2026, 5:12 PM

@themawisdead - that’s fair

I think he works as one final push for Matt to suit back up but does feel somewhat superfluous otherwise.

I didnt mind the needle drops though.

themawisdead - 4/17/2026, 5:19 PM

@TheVisionary25 -

i think maybe he should habe been at the center of the gang war going on in the background.

then, you're putting Fisk in a tough position of needing Muse to play out his plan of wiping out the competition, while also needing to put a stop to him to keep up appearances as mayor.

& you're still putting pressure on Matt with all the killing that's going on.

but let me not monday morning quarterback.

Lucasberg - 4/17/2026, 5:21 PM

@themawisdead - I know what they were doing but the notion that anyone steals Fiddle Faddle in NY city to feed there family is pure fantasy. Also, that anyone who ever did that would go to trial and be prosecuted lol. I think you can literally steal up to $900 worth of merchandise and sadly NOT be prosecuted.

So the whole argument "the justice system is too harsh" rings totally hollow, forced and contrived.

Additionally, I just don't find that feeling in the Daredevil stuff that was peak (during the Miller era basically)...if anything, that Daredevil I believe would be enraged that theives were being let free by NYC's DA.

Anyhow, it was a fairly modest happening in season 1 that essentially spoiled one episode for me. But overall, season was really great fun and kind of impressive what they were able to pull off given the script and vision that was odds with itself

TheVisionary25 - 4/17/2026, 5:27 PM

@themawisdead - I quite like that idea.

Forthas - 4/17/2026, 2:24 PM

I hate to sound like I work for TMZ but...I am hearing Damson Idris is dating Lori Harvey. That seems a bit awkward for him to be cast as the next Black Panther given that Ryan Coogler is good friends with Michael B. Jordan, Lori Harvey's ex. I wonder if he is in fact the new Black Panther.

XelCorp - 4/17/2026, 2:30 PM

BP shoulda BEEN more mystical. The science aspect was def imbalanced

gambgel - 4/17/2026, 4:14 PM

Lol at Captain Marvel not appearing, when she is the nexus between X-Men/Monica and the Avengers universe.
not to mention the ONLY female Avengers alive right now (Wasp actress retired)

MTSSH full of s*** as always.

Spike101 - 4/17/2026, 4:28 PM

Please let’s just ditch these young Avengers characters, does anyone really want them. If Ms Marvel is in Vision Quest then that’s killed that off.

Bucky74 - 4/17/2026, 4:48 PM

@Spike101 - 000.00.2 percent of fans want them, so Disney will continue to push them hard and try and force fans to want them by including them in films with characters we actually do want to see. They have already diluted their brands to the point that they are bleeding money (1000 VFX artists canned) and had to open the bank one last time for RDJ. Ms. Marvel is not catching on but Feige and Disney will never admit that and triple down to diminishing returns. Sure, we’ll all show up for Doomsday and Secret Wars to see our favorites, but that will not translate to “Young Avengers” ticket sales or ratings on Disney Suss.

gambgel - 4/17/2026, 6:37 PM

@Spike101 - I like them all. They are cool characters, and fresh.

Whats the problem with using them in a lower budget project? there are audience for all teams. Young kids and teens can enjoy this team easily. If some "adult Marvel fans" cant enjoy them, move onto the next one.

Spike101 - 4/18/2026, 2:42 AM

@Bucky74 - Exactly what I think, it seems they are hell bent on including these characters regardless of profits. Very odd to me.

Spike101 - 4/18/2026, 2:49 AM

@gambgel - Each to their own, and that’s fine. For me adding these children to stories of classic Marvel characters like Vision and Ultron as if they were Infinity Stones for them all to come together at some point in the future just dilutes the main point of the show. When I was a kid myself I didn’t want to watch children saving the day some weird belief I could do the same, I wanted to watch what the older kids watched.

Bucky74 - 4/18/2026, 8:27 AM

@Spike101 - They figure the popular characters will get butts in seats and then they can jam these characters down our throats and make fans like them. It’s ain’t gonna happen and any solo projects with them will lose money again

Spike101 - 4/18/2026, 9:17 AM

@Bucky74 - We are definitely on the same page here. For me they always ruin an otherwise great experience.

Bucky74 - 4/18/2026, 9:26 AM

@Spike101 - Definitely, my friend. They will probably give those characters forced “hero moments” like that cringe Endgame scene where all of the women magically united in the middle of a chaotic battle to save Peter, figuring “This will make fans love this character” etc. Fans and fans alone decide who the want to see more of and that cannot be forced. Does anyone (aside from a very very small group of “modern” fans) really want to see Ms. Marvel over Daredevil or Shiri as Black Panther over Ta’challa? It’s like marketing Barbie to little boys. It ain’t gonna happen, but it seems like Marvel is pushing it again in the hopes that the big names can carry this (they are probably right there but that will not translate to those characters).

TheVisionary25 - 4/17/2026, 5:09 PM

Even if someone like a Damson Idris as T Challa II/Toussaint becomes the new BP , I expected Shuri to return and I hope she does since I like her as a character…

Also , them apparently focusing more on the mystical side in the third installment makes me think my Denzel Washington as Achebe casting may become a reality and if so then that would be great!!.

Also I hope that the rumor of a new Luke Cage project is true and that Bushmaster is in it aswell.

ObserverIO - 4/18/2026, 9:35 AM

Bullet points! Sweet!

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