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Loki is an iconic anti-hero who took the hearts of billions of people through his redemption arc. With Tom Hiddleston attached to the role of Loki, there is one more villain in the making that could potentially save the Marvel Cinematic Universe from dying.

With a potentially newX-Menmovie on the horizon, it has been rumored that Mr. Sinister will be the new big bad baddie in the project. Sharing similar traits with the God of Mischief, Mr. Sinister might just be the perfect villain that the MCU would need!
Mr. Sinister Could Be The Main Villain For TheX-Men
Without revealing and spoiling too much about the finale ofLoki Season 2,we can say that the multiverse revolves around Loki now. As the future MCU projects start including characters from the X-Men franchise, there are bound to be villains as well.
Also read:Loki Producer Wants Season 3 Under 1 Condition Even if Tom Hiddleston Doesn’t Return: “That would be cool”

As per a rumor by@DanielRPK, the new villain of an upcomingX-Menproject could very well be Mister Sinister. Known by his Earth name Nathaniel Essex, the villain was essentially created by Apocalypse back in the 19th century, and Mr. Sinister has been living ever since. The rumor was shared on X (formerly Twitter) and people are indeed loving the idea.
Mister Sinister is reportedly the top pick to become the main villain in the MCU’s upcoming ‘X-Men’ project

via@DanielRPKpic.twitter.com/MV4LED3cAc
— ScreenTime (@screentime)July 27, 2025

With Mr. Sinister in the mix, fans couldn’t help but love the fact that the villain could be a part of their beloved MCU.
FINALLY. He was always my favorite villain in the comics and cartoon. They have really missed the boat not bringing him into the fold until this point. Great place to reboot.

— Aaron Phillips (@aphil_12)July 09, 2025
This would be an excellent choice.
— Sports4natic 🍥 (@JG_MIA_305)June 01, 2025
Good choice if true!
— Chainsaw Reacts (@ChainsawReacts)July 24, 2025
If they don’t mess it up, the X-MEN could save the MCU.
— Final Flame Productions (@FinalFlamePr)July 26, 2025
and then we get the eventual Deadpool/Mister Sinister showdown. Although Taskmaster is also someone I wanna see
— Dan Saint (@dansaint5879)July 21, 2025
“Only Sinister knows….. what the future holds…”
— Bandwidth Bandits Official (@Blade187121)Aug 16, 2025
And there’s a very good reason why fans love Mr. Sinister and how he could save the MCU and the X-Men from failure. Going by the books, the character is very similar to Loki and if done correctly, Mr. Sinister could be the new Loki of the MCU (who is actually a villain).
Suggested:Loki Returns in MCU’s Upcoming Project After Tom Hiddleston’s God of Stories Arc in Season 2 Finale
Mr. Sinister Could Be The New Loki
Related:Entire Loki S1 Was He Who Remains’ Plan to Kill 1 Avenger, Secret Wars Theory Gives Jonathan Majors the Ultimate Power-up
With how the characters are quite similar in nature, Mr. Sinister could very well be the new Loki. AlthoughTom Hiddleston’siconic character cannot be replaced, Mr. Sinister and Loki share several characteristics.
Both characters have gotten their way through tactics of manipulation oftentimes and are constantly planning or scheming for a situation. Loki and Mr. Sinister are known for their shape-shifting abilities and quick-thinking skills to get the best out of a situation. Although there are similarities and differences between the two, the world surely hopes that the MCU will not ruin the character of Mr. Sinister.
Visarg Acharya
Senior Writer
Articles Published :3266
Visarg Acharya is a Senior Writer at FandomWire, majorly focusing on movies, with over 3000 articles published. He has been an entertainment journalist for the past three years and a copywriter at a corporation. Visarg usually covers news and theories on the MCU and the DCU, with an emphasis on Avengers and Superman; Game of Thrones, and more.A Tarantino fan, Visarg, spends his time critiquing various directors’ filmographies and watching them with curiosity. Medieval fantasy like The Lord of the Rings or sci-fi movies like Interstellar, watching the latest horror movies, and listening to Hans Zimmer become his comfort zone. When idle, he can be found reading fantasy novels with a terrible cup of coffee in hand.