Adam Driver's Mr. Sinister Rumored To Appear In "Multiple MCU Projects" Following X-Men Debut

Adam Driver's Mr. Sinister Rumored To Appear In "Multiple MCU Projects" Following X-Men Debut

Adam Driver is set to make his MCU debut as Mr. Sinister in the upcoming X-Men reboot, and it sounds like Marvel Studios has big plans for the villain going forward...

By MarkCassidy - Sep 10, 2026 07:09 AM EST
Filed Under: X-Men

Marvel Studios announced the main cast of the long-awaited X-Men reboot at D23 last month, and the lineup included a couple of surprising names.

Though Adam Driver had been rumored to be in line to play the movie's villain, we initially heard that he'd be playing Magneto. The Star Wars sequel trilogy star was introduced as Nathan Milbury - the name Dr. Nathaniel Essex took shortly after allowing himself to be transformed into Mr. Sinister by Apocalypse.

Sinister has been a thorn in the X-Men's side for many years in the comics, but never appeared in any of the 20th Century Fox movies (X-Men: Apocalypse's post-credits scene introduced EssexCorp, but never went anywhere).

Rumor has it that Driver's Milbury will have ties to Scott Summers (Kit Connor) in this movie, which may indicate that the main plotline will revolve around the villain's attempt to harvest Scott and Jean Grey's (Sadie Sink) DNA to create the "ultimate mutant weapon."

It might be a little early to introduce Madelyne Pryor (an evil clone of Jean), but the groundwork could be laid for major Sinister-related storylines based on "Mutant Massacre", "Inferno", or "X-Cutioner's Song."

Sinister becoming a primary villain in Marvel Studios' Mutant Saga wouldn't be a major surprise, but MTTSH believes that the character is set to feature in "multiple MCU projects." 

Will this extend to the small screen? We have heard that Marvel is planning at least two mutant-related Disney+ shows that will tie into the main cinematic saga, so it's a definite possibility.

The rest of the officially announced cast includes Christopher Abbott as Professor Charles Xavier, Samara Weaving as Emma Frost, and Maya Boyd as Storm.

We are expecting a few more additions (Beast and Magneto, at the very least), but it's looking like the rumor that the core team will consist of the OG comic book crew (Cyclops, Jean, Beast, Ice-Man, and Angel) may not have been accurate.

Sonny Lee Sung Jin (Beef) and Joanna Calo (The Bear) recently came aboard to write a new draft of Michael Lesslie's script.

Kevin Feige teased Marvel's plans for the X-Men shortly after SDCC.

"Acquiring the X-Men rights isn't just about... for example, Wolverine is an outstanding character, and we were able to team him up with Deadpool, which is great. But the X-Men are far more than just Wolverine, far more than the original team; fundamentally, it's a universe, a multi-stage saga. Much of that is what we're working towards."

"We’re constantly changing, constantly evolving, but having some guidance helps us act more purposefully, especially with X-Men—it’s already had 10 movies, some very, very good, some I think haven’t lived up to expectations—how do we plan the 'mutant saga' in a very grand way?"

"That being said, we have many more characters to explore in the future—the schedule is already booked until 2042, especially the X-Men," Feige added. "The X-Men have many unexplored characters from the Asia-Pacific region, particularly China, which we're very eager to explore. That's why I'm excited about the X-Men: we can show the world different types of heroes."

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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DocSpock
DocSpock - 9/10/2026, 7:15 AM

The X-Men should be a big freaking deal at the movies.

I hope they don't dilute it with sh!tty D+ shows. A bunch of funny cutesy goofy mutant kids stories would probably dampen enthusiasm for their movies.
dragon316
dragon316 - 9/10/2026, 10:04 AM
@DocSpock - maybe that’s what fans about fantastic four popular in books not in movies
DocSpock
DocSpock - 9/10/2026, 11:29 AM
@dragon316 -

I think the problem is that the first 3 FF movies were so bad that audiences are still reluctant to go see them again in the theaters.
deamon
deamon - 9/10/2026, 7:30 AM
If this TV show will be good enough then ok, maybe about X-Factor team.
Still waiting who's playing Angel, Beast, Iceman and Sebastian Shaw.
MrMediocre
MrMediocre - 9/10/2026, 7:39 AM
Department of Damage Control has power inhibition tech, and the DNA of both Jean Grey (they definitely have samples) and Spider-Man (Peter was bleeding all over the place.

We could get a Spider-Man AND X-Men clone saga, we already have what we need for Ben Reilly and Madelyne Pryor.

Maybe a whole clone hero team under their control, culminating with Ragnarok going nuts and killing someone?

Hell, have Jackal be a student of Sinister.
bkmeijer1
bkmeijer1 - 9/10/2026, 10:58 AM
@MrMediocre - although I'm not a fan of clones in the MCU, a team with Ben Reilly, Madelyne Prior, Stryfe, Laura Kinny and Ragnarok sounds pretty cool
TheVisionary25
TheVisionary25 - 9/10/2026, 11:42 AM
@MrMediocre - that would be crazy but i doubt they go that route.
hue66
hue66 - 9/10/2026, 7:43 AM
The shows are needed. Xmen has too many characters and history that the movies won't be able to cover. And each character has their own stories. As long as the series have good budgets, story and directed well.
JediKnight91
JediKnight91 - 9/10/2026, 8:30 AM
Makes sense. Sinister has been known to clone himself and Apocalypse is rumored to be the next big bad in the MCU after Doom.
Nomi
Nomi - 9/10/2026, 8:34 AM
No shit!
Lysander45
Lysander45 - 9/10/2026, 8:37 AM
It's not particularly a new thing to consider that Marvel Studios insists that actors, particularly those with decent brand recognition, sign their names to multiple film options whenever they sign a contract. Especially since they need to delay those future renegotiations that lead to higher pay for their acquired talent.
GenD
GenD - 9/10/2026, 10:00 AM
Krakoa would be cool but would be over the head of most movie goers.
bkmeijer1
bkmeijer1 - 9/10/2026, 11:00 AM
Such a no shit rumour like Apocalypse showing. Obviously he'll stick around, especially since he is just Nathan Milbury here and not even Mr. Sinister (yet)
TheVisionary25
TheVisionary25 - 9/10/2026, 11:40 AM
@bkmeijer1 - i mean ,we don’t know…

He might already be “transformed” but is hiding under his real name and operating from the shadows as of now.
bkmeijer1
bkmeijer1 - 9/10/2026, 2:23 PM
@TheVisionary25 - most likely if he's a few centuries old, but I do think it's telling they announce him as Milbury and not as Sinister
TheVisionary25
TheVisionary25 - 9/10/2026, 3:10 PM
@bkmeijer1 - true but it could be that’s the bane he uses as a front.
TheVisionary25
TheVisionary25 - 9/10/2026, 12:35 PM
I feel it makes sense that Mister Sinister would be a recurring character but I can’t buy that Driver would sign on for multiple projects after the SW sequel trilogy but given he wanted to do the Ben Solo film , I’m likely wrong…

Also I’m interested in seeing how they characterize this version of Nathaniel Milbury in that will he be the more cold , calculating and creepy scientist & manipulator or the more modern flamboyant , snarky eccentric that views his experiments as art.

Honestly , I can see Driver playing the former moreso then the latter (even if that would be fun given he can be very funny) but we’ll see since it’s likely they take elements from both characterizations.

Anyway , looking forward to seeing his & the MCU’s take on the character!!.

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