The Biggest Marvel Characters Yet to Show up in MCU Movies

It really is amazing how much the superhero genre has exploded over the last quarter of a century. Before 2000, the only cinematic releases under the Marvel banner were for C-list characters. Meanwhile, the more well-known names at most had direct-to-video or TV movies. Now, as the Marvel Cinematic Universe is about to return from […] The post The Biggest Marvel Characters Yet to Show up in MCU Movies appeared first on Den of Geek.

Feb 15, 2025 - 15:17
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The Biggest Marvel Characters Yet to Show up in MCU Movies

It really is amazing how much the superhero genre has exploded over the last quarter of a century. Before 2000, the only cinematic releases under the Marvel banner were for C-list characters. Meanwhile, the more well-known names at most had direct-to-video or TV movies. Now, as the Marvel Cinematic Universe is about to return from a year of (mostly) rest, we live in a world where there have been over 70 Marvel box office releases when you include all the other studio efforts. It’s a lot.

The House of Ideas has so many comics, with so many heroes and villains, but Marvel Studios is starting to reach the point where they’re running out of A-listers to pick out of a hat. We just had a movie with Knull in it, people. Knull! We’re really scraping the bottom of the barrel, when there are still a few bigger characters yet to appear in the MCU.

So, who hasn’t shown up yet? Who are the bigger guns that Marvel and previous studios have been sitting on? We’re counting the Marvel characters who haven’t appeared in either a theatrical release based on a Marvel comic or a TV show that is directly connected to the MCU. Just because Miles Morales has not appeared in live-action does not mean he’ll be included in the list.

There will be a handful of choices that are borderline due to cut content, blink-and-you’ll-miss-it background appearances, and easter eggs. Those will be called out when we get to them.

Morpho in X-Men '97

15. Morph

With over a dozen X-Men movies to their credit, 20th Century Fox was able to represent all the mutants who appeared in the ‘90s animated series but one. Granted, Morph was not on the show that much. Morph messed us up with their early death for shock value, came back as a brainwashed pawn, went through a lot of therapy, and only returned for good in the finale. In fact, Morph just recently got their full due thanks to a bigger role in X-Men ’97 and a staple role in the Exiles comic series.

Why Morph was absent from the movies is obvious. Those flicks went all-in on another shapeshifter: Mystique. But when it’s time for the MCU to do their own X-Men stuff, maybe they could differentiate their take by putting the spotlight on a different shapeshifting mutant.

Ares in Marvel Comics

14. Ares

The teaser for Hercules at the end of Thor: Love and Thunder is one of those cliffhangers that may never really get followed up on. But if we do get to see Brett Goldstein’s portrayal as the Greek demigod again, there’s a strong chance that we’ll get to see his infinitely cooler brother, Ares. While not for a long stretch, there were a few years in the 2000s when Ares was a prominent antihero in Marvel, both as a member of Iron Man’s Mighty Avengers and Norman Osborn’s Dark Avengers.

Marvel’s Ares is a lot more in-your-face than what David Thewlis did with the God of War in DC’s Wonder Woman. This Ares, described as “a Thor and a Wolverine” in one by Carol Danvers, is not only powerful and a genius tactician, but he also likes to get his hands dirty in the most extreme, metal ways. Like how he led a training exercise by firing a gatling gun with one hand and using the other to chug down a beer. The MCU could do worse than giving us a scene of Ares pouring blazing oil onto himself and then being catapulted into the center of the enemy army so he can go ham.

Beta Ray Bill in Marvel Comics

13. Beta Ray Bill

If Taika Waititi and James Gunn were less annoyed about Thor joining the Guardians of the Galaxy at the end of Avengers: Endgame, we might have actually seen good old Bill pop up. On one hand, that might have stepped on the toes of Thor: Love and Thunder being based around somebody else wielding Mjolnir, but Jane’s gone now, so there’s always the chance the Korbinite warrior might one day pick up the enchanted hammer, not realizing what a big deal that truly is to pull off.

Thor’s horse-faced alien counterpart at least exists in the MCU in some form, as his image appeared in Thor: Ragnarok as part of a Mount Rushmore of former champions in the Grandmaster’s colosseum. It’s a fitting easter egg, as Beta Ray Bill had a supporting role in the Planet Hulk animated movie where he was also forced to face Hulk in a gladiator fight. Bill’s role in the MCU multiverse recently got a nod in What If? season 3, where he appears as a figure in the Exiles’ superhero-themed foosball table.

Tigra in Marvel Comics

12. Tigra

There are basically two kinds of Avengers: popular solo superheroes with their own comics who got roped into this supergroup; and B-listers who are mainly remembered for crashing at Avengers Mansion for 10 years at a time. It’s what separates Captain America from Vision. There are a handful of these latter types who still haven’t shown up in the MCU like Jocasta, Dr. Druid, Stingray, and so on. Wonder Man was the most prominent of this crew, but he has a Disney+ show coming up, so Tigra it is.

The heroic werecat is a hard one to place as she wouldn’t be high enough on the ladder to be on an Avengers team, and she would be a little too outlandish for Daredevil’s street-level buddies. It’s probably why Hulu almost made a Tigra and Dazzler animated series. At least Tigra did get to have her slight moment in the sun when the animated incarnation from Avengers: United They Stand showed up as a comic convention regular in the Chip ‘n’ Dale: Rescue Rangers Disney+ movie. She got to hang out with Ugly Sonic and his disturbing human teeth!

Daken in Marvel Comics

11. Daken

It makes sense. When you do a movie that revolves around Logan’s secret daughter, it’s hard to find time and space for Logan’s secret son. Akihiro is a great character, both as a hero and a villain, but putting him in the MCU runs the risk of having too many Wolverine-type characters at once. It’s a shame, as Daken has an interesting dynamic as the defiant son of the most defiant superhero. He’s the Marvel version of that Doug sketch from MTV’s The State where a cool teenager is desperately trying to uphold a rebel image against his cigarette-smoking Hell’s Angel dad who produces albums for Bob Dylan.

If Dafne Keen does ever end up being in another Marvel movie and takes up her father’s mantle, that’s probably the best chance Daken has of showing up. Daken is a perfect foil as the tortured son of Wolverine who hates what he represents due to Logan never being there for him. Otherwise, turn him good and give us Hellverine, the Wolverine/Ghost Rider hybrid. A Hellverine movie would make a billion dollars on opening night.

Omega Red in Marvel Comics

10. Omega Red

Omega Red is one of those comic characters like Spawn who’s like a ‘90s elemental. Once the decade ended, so did their power and presence. It wasn’t until the nostalgia kicked in that Arkady Rossovich made a return to X-Men comics, and by that time, the Fox movies had long run their course. That’s not to say he was completely absent, as Omega Red was intended to have a cameo in Deadpool 2, but the only footage that didn’t end up on the cutting room floor was him being blurry in the background. We’re not counting that.

But this other, other anti-Wolverine is ready for primetime. On the one hand, once the MCU has its own Wolverine, he’s an easy, fresh villain to throw at him. On the other, they can also use him as a continuation of the Red Room and all that shady Russian government stuff. Maybe he’s been on ice as a failsafe. Whatever the reason for his inclusion, the world needs to hear someone discuss his “Mutant Death Factor” powers while keeping a straight face.

Squirrel Girl in Marvel Comics

9. Squirrel Girl

Squirrel Girl’s star has risen thanks to Marvel Rivals, and it’s really only a matter of time before we see Marvel’s greatest overachiever show up and give pet names to each of Thor’s abs. Maybe they’re saving her for the post-credits scene in Avengers: Doomsday where Nick Fury calls for help with a pager with a pixelated squirrel on it. Steve Ditko’s greatest creation could pop up nearly anywhere and feel natural, so the question is not “if” but “when.”

Having her on this list comes with a big asterisk. We came very close to an MCU Squirrel Girl played by Milana Vayntrub in New Warriors, a streaming show that unfortunately never made it past the pilot. Vayntrub still went on to voice the character in both Marvel Rising and Marvel Rivals. Then there’s the not-quite-canon Disneyland ride Web Slingers: A Spider-Man Adventure, which deals with a group of smart youngsters called the Worldwide Engineering Brigade. This group not only includes Taylor Nicolette as a live-action Doreen Green (sans tail), but also Moon Girl of Devil Dinosaur fame!

Mojo in Marvel Comics

8. Mojo

Guys, when Channing Tatum gets that Gambit spinoff movie greenlit, we’re going to need to find a spot for Mojo. After all these years of outlandish superhero stuff in movies, the public is ready for a coked-up Jabba the Hutt TV producer with robot spider legs, but does that mean Marvel Studios head Kevin Feige should really do it? Would this just end up being MODOK 2.0? Mojo is for sure a major player in the X-Men mythos, but he’s not somebody who gets that big of a spotlight. He’s a one-off bad guy for throwaway storylines and not somebody you base a huge arc around. He’s only good in small doses.

Still, he’s such a larger-than-life character who could be really fun in the right hands and would be a more entertaining choice than Arcade, who ultimately fulfills the same function as a villain mastermind. Besides we already know that he exists in the X-Men’s movie universe, considering Shatterstar comes from Mojoworld, according to Deadpool 2. Make it trippy, throw in Longshot and Spiral, and you have a stew going.

Rick Jones in Marvel Comics

7. Rick Jones

This entry isn’t a plea to incorporate Rick Jones into the MCU. If there was ever a time to include some version of Rick, that time had long passed. It’s just kind of crazy to see him so absent considering what an important part of Marvel he used to be. In a time when Marvel writers felt that the Robin-type teen sidekick didn’t fit the vibe, Rick was the outlier. The Hulk’s best friend and crux for his origin, an honorary member of the original Avengers, a protégé to Captain America, and the Billy Batson to Mar-Vell’s Captain Marv—I mean, Shazam. He was the Forrest Gump of ‘60s and ‘70s Marvel Comics!

We’ve had two Hulk movies but neither included Rick (though the nothing character Harper from Hulk does fulfill the role of getting shoved out of the way so Banner can get blasted with radiation). The closest was the video game adaptation of Incredible Hulk, which expanded on the movie’s story. Maybe if that World War Hulk movie ever happens, they could find a spot for him. His gamma alter-ego of A-Bomb could work, but then again, A-Bomb was a good guy version of Abomination. And these days, MCU Abomination is a pretty chill dude.

Firestar in Marvel Comics

6. Firestar

In the late ‘70s and early ‘80s, the rights to Human Torch were complicated by the desire to give him his own solo movie that never materialized. That meant the Fantastic Four cartoon had to use HERBIE, and Spider-Man and His Amazing Friends had to introduce new character Angelica Jones, otherwise known as Firestar, to team up with Iceman and the titular wallcrawler. This put her in the pantheon of comic book superheroes who first appeared in cartoon shows, alongside Harley Quinn, X-23, Reptil, Renee Montoya, and… sure, HERBIE. He makes good sauce.

While not the most standout character in Marvel’s repertoire, Firestar’s memorable time as an animated teammate to Spider-Man has led to her joining plenty of superhero teams over the years, being a founding member of the New Warriors, becoming an Avenger, being part of the X-Men, and so on. Just an easy character to throw wherever. Funny enough, a version of Firestar has already been part of the MCU, as Liz Allan (of Spider-Man: Homecoming fame) was Firestar in the Ultimate Marvel continuity instead of Angelica.

Moonstone in Marvel Comics

5. Moonstone

The Thunderbolts have taken many forms in the comics. Unfortunately, the iconic original version can’t be used for the MCU due to Mysterio already playing the same card with his “wolf in sheep’s clothing” scheme in Spider-Man: Far From Home. Even though most of the characters from the Thunderbolts movie have been part of various comic incarnations of the team, there’s a shocking lack of the original crew. In fact, other than Baron Zemo and the rumors that Geraldine Viswanathan will be playing Songbird, none of the original Thunderbolts have yet to appear in any MCU project.

The one who hovers above them all is Karla Sofen, otherwise known as Moonstone. This powerhouse is what Loki was before he became too likable: a conniving, manipulative, selfish backstabber. She’s motivated by survival, luxury, and getting the most with the least amount of work. It’s this ambition that got her a spot as the government’s official Ms. Marvel when Norman Osborn ran the Avengers. Ever since that run, people have been speculating that she could one day be a prime antagonist for Captain Marvel in the movies.

Hulkling in Marvel Comics

4. Hulkling

Since the beginning of Phase 4, the movies and shows have been very adamant about building up this world’s version of the Young Avengers, including a scene of Ms. Marvel attempting to assemble the team. We’re reaching the point where all of these “youngsters” are going to be in their 40s by the time we get to the big team-up, but there’s still a little time. The Young Avengers comic only had two major runs, and nearly all the main members of the team have been represented in some way with a few exceptions.

The biggest exception is Hulkling, a Kree/Skrull hybrid who used his shapeshifting to make himself look like a young Hulk. The thing is Skrulls aren’t exactly in-season with the MCU. The two-hit combo of Secret Invasion and The Marvels have killed interest in our green alien friends. Even if we’re getting more focus on Hulk-related stuff in the near future, we already have a young Hulk character in Skaar, introduced at the end of She-Hulk: Attorney at Law. Despite Hulkling’s boyfriend Wiccan getting the spotlight in Agatha All Along, this guy might be too complicated and ill-timed to fit into the bigger picture.

Black Cat in Marvel Comics

3. Black Cat

Okay, okay, yes. This one is the most debatable. The Amazing Spider-Man 2 had Felicity Jones show up as a woman named “Felicia” for a few seconds of screentime as Harry Osborn’s assistant. It’s a role nobody would remember if not for the fact that it was supposed to be Felicia Hardy, and her actress was way too famous for such a minor part. As Amazing Spider-Man 2 came out when Sony still saw dollar signs in the concept of a Spider-Man Cinematic Universe, the initial idea was to use this cameo as a first step toward a Black Cat/Silver Sable team-up film.

It’s just one of several close calls we had with live-action Black Cat. She was also in earlier scripts for Spider-Man 2 and was apparently planned for Spider-Man 4. Considering we have 10 Spider-Man movies and six quasi-Spider-Man movies on top of that at this point, seemingly every major part of the Spider-Man corner of Marvel has shown up onscreen except Black Cat (and the Jackal, who is at least an unseen plot point in Kraven the Hunter). Now that the Sonyverse is completely kaput, we might finally get to see her make a real appearance in the MCU proper.

Mr. Sinister in Marvel Comics

2. Mr. Sinister

We were so close to this one. So close. Mr. Sinister was what Fox’s X-Men Cinematic Universe was building toward right before everything collapsed. The post-credits scene for X-Men: Apocalypse featured Wolverine’s DNA being taken away by Essex Corp. Deadpool 2 featured the Essex House for Mutant Rehabilitation, and New Mutants was intended to be one big backdoor to Sinister, rumored to be played by Jon Hamm. Then Disney bought everything and that died on the vine.

There are a million X-Men characters out there, and half a million of those have not shown up in a movie. But Sinister is easily the biggest one among them. He’s the perfect threat for when the MCU starts messing with mutants, and considering his status as an obsessed geneticist, he could easily become the reason behind mutants popping up in an established universe that hasn’t brought it up in all these years. Just make him the flamboyant bitch that he is in the comics and we’re good. The Marvel movies need a Dr. Frank-N-Furter to liven things up!

Annihilus in Marvel Comics

1. Annihilus

The big three final boss characters in Marvel are Thanos, Galactus, and Dr. Doom. Thanks to Fox having Fantastic Four movie rights, the MCU could only rely on Thanos for a long while and are only now able to play around with the other two. But then what? Try Apocalypse in this timeline? Turn Hulk into the Maestro? Give the Juggernaut scissors and see what happens when he runs around? Kang the Conqueror was a good idea at the time, but real life cut that off at the knees. No, the best play would be to bring Annihilus into the mix.

The Living Death Who Walks is another Fantastic Four villain, but considering the Fox Fantastic Four movies could never get past adapting Doom and Galactus, those movies never got to Annihilus. The nice thing is that even with Annihilus being wrapped up in the Fantastic Four film rights for so many years, he isn’t beholden to that specific property in the MCU. The Annihilation comic event showed what a universe-ending threat this cosmic locust really is with an entire Negative Zone full of monster bugs at his disposal. The guy had Thanos on the payroll and weaponized Galactus against his will. What more could you ask for in a new big bad?

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