Marvel has been incredibly successful when it comes to how they handle a character and put them on the big screen. They take a hero that not a lot of people have heard of (partially because some of their biggest known properties, like X-Men, are with other studios), make a decent movie, and bam! Suddenly everybody knew who Iron Man or the Guardians of the Galaxy were. It's a tried and true formula that will definitely work for them for many years to come.
Because of their movies, Marvel has gotten on the radar of the casual audience- people who would never think to pick up a comic book. More fans are coming to the genre- for better or worse, mind you, depending on your perspective as a fan. Regardless, Marvel is reaping the benefits of having good films with both new heroes and familiar faces.
Now, because of recent concerns like "Superhero Fatigue," people are beginning to wonder if Marvel will run out of ideas. I'd bet that they won't. They have an entire roster of characters in their comics that people haven't even heard of yet. Some of these characters would blend into the MCU perfectly, adding an extra layer of depth and/or balance to the already large and chaotic cast of Avengers.
I'm not saying these characters are definitely going to make it to the MCU, but as far as I'm concerned, these 10 Marvel Comics characters need to be there as soon as possible.
When "All New All Different Marvel" launched, we got ourselves a very different version of the Wolverine- X-23. X-23 was created as a clone of Wolverine for villainous purposes. Originally, she was sent to kill many individuals, but she gained a conscience and ended up joining the X-Men. After the untimely death of Wolverine, who had become her mentor, she became deeply distraught. Instead of going off the deep end, she felt it was best to honor his memory by becoming the All New Wolverine. Unfortunately the rights to the X-Men are with Fox but we're praying they'll make a deal with Marvel. For all of our sakes X-23 needs to happen.
9 The New Warriors
Think of how Young Justice is like a "discount" version of the Justice League. In the same way, the New Warriors are like a discount version of the Avengers. With an ever expanding roster, Marvel might need to start splitting various characters up into teams. They wouldn't even necessarily have to put all the original characters in the New Warriors (they could throw in a big name like Spider-Man for all I care). People need to remember Marvel faces other than the Avengers, and a fresh New Warriors team might be the way to go. Given their involvement in the original Civil War in the comics, it just might be time to see the New Warriors on the screen.
8 Cloak and Dagger
Those of you who've seen The Ultimate Spiderman series on Disney XD (you either love it or hate it) know who this supernatural duo is. Injected with "amped up" heroin, Cloak became tapped into the "Darkforce Dimension." This gave him the power of teleportation and the ability to trap enemies in another dimension. Dagger, on the other hand, can fire light from her hands like little daggers and even heal people with her unique powers. With today's kind of effects, the duo would lend themselves perfectly to a Netflix series.
Dormammu is like a vicious combination between a Greek titan and a dark sorcerer. His claim to fame is working for Doctor Strange and wielding incredible power, including control over fire. His pure hatred, as well as his appearance, make him terrifying. He also lives in a different dimension and can use various portals to appear anywhere he wants to on Earth. While it's already been confirmed that Mordo will be the villain for the Doctor Strange movie, Dormammu needs to be in the sequel. No excuses.
6 Night Thrasher
The Night Thrasher is everything you would want in a mortal Superhero. He has Batman's martial arts skills, Iron Man's tech knowledge, and the ruthlessness of the Punisher. He's even got a impressive backstory to boot. The popularity of the Punisher among teens and grown men alike is impressive so selling a character like Night Thrasher would be almost too easy. Besides, he's also the one who organized the New Warriors. Kill two birds with one stone, Marvel. It's a no-brainer.
Anti-heroes are all the rage these days. Prowler is another that would make so much sense in the MCU. After being caught in a battle between Spider-Man and one of his Super-villains, Prowler was inspired to create his own suit and gear to become a crime fighter. He invented a gliding cape, steel claws, and a wrist gauntlet that allows him to shoot sleeping agents and even magnesium flares. Eventually he worked for the the ever ambiguous Silver Sable but then worked with other rehabilitated baddies to form the Outlaws.
4 The Thunderbolts
Most of the characters in the Thunderbolts organization aren't exactly unknown. You have Elektra, Red Hulk, Deadpool, Punisher and Hawkeye. The only seemingly unknown member would probably be Agent Venom. Anyway, the Thunderbolts began during Marvel's Civil War comics when Iron Man recruited villains to his cause. The government liked the idea so much that the Thunderbolts were formed under the supervision of Hawkeye. Because most of these characters are being introduced into the MCU, now would be as good a time as any to bring the Thunderbolts to life.
3 Moon Knight
Often referred to as "Marvel's Batman", Moon Knight is about as dark as it gets. Donning a white costume with a crescent moon for a logo, he is unlike any other hero in the Marvel universe. His definitive trait is not his crescent-shaped Chakrams nor his physical prowess but his mind. Moon Knight (Marc Specter) suffers from schizophrenia and constantly hears voices in his head. Despite this, he continues to do good (albeit while occasionally struggling with his issues). Adding him to the MCU would allow Marvel to create someone like Batman while also being entirely original. Incorporating his mental illness as a unique superhero trait might even make Moon Knight more popular.
Sentry is one of those characters that needs to be in the MCU. After Robert Reynolds becomes imbued with super powers, he travels across the Marvel Universe to help out various heroes like Spiderman, Mister Fantastic, and Doctor Strange. Because his greatest adversary ended up being a dark version of himself, Sentry teamed up with Dr. Strange and Mr. Fantastic to erase his own existence, thereby leading to the destruction of his rival. Having a character like this appear across the MCU would really work to streamline the universe and make it feel much more connected.
1 Devil Dinosaur
Born on an alternate earth where prehistoric times rule, Devil Dinosaur was captured by the Killer-Folk and sentenced to burn to death. Before he was killed, however, a young boy saved him. The unique flames mutated the dinosaur, though, giving him enhanced intelligence, unique powers, and flame-red skin - enter Devil Dinosaur. Since then, he has visited Earth 616, where all the classic Marvel heroes live, and has also been a part of teams like the Fallen Angels and the Pet Avengers. He seems so incredibly out of left field, but that's exactly what Marvel does best. And really - who doesn't love dinosaurs?