UPDATE: Disney's purchase of Fox has been made official. The original article follows.

With Marvel Studios set to gain back the rights to hundreds if not thousands of its characters thanks to the Disney deal to buy 20th Century Fox, many fans are wondering what the future of the X-Men, Deadpool, and the Fantastic Four will be if they're brought into the MCU. The more likely scenario, however, is that the established characters and films will continue to exists under a separate banner at Disney while the Marvel Cinematic Universe moves forward as planned. What will change, however, is what characters Kevin Feige and his collaborators have access to in future films.

Phase 4 of the MCU is up in the air, but the Disney/Fox deal could radically change the landscape of things following Avengers 4. There's always the chance Wolverine, Deadpool, and Silver Surfer could be headed into the world of Iron Man and Captain America. But even if they don't, there's still no shortage of characters that Fox owns and haven't yet appeared in a movie. Here are some superheroes, mutants, and cosmic baddies we'd love to see join the Marvel films.

X-Men Heroes Marvel Could Use (This Page)

Fantomex

Fantomex X Men Weapon XIII Marvel Comics

A popular X-Men character that's not actually a mutant, Fantomex comes from the mind of Grant Morrison and debuted in his 2002 New X-Men series. A master assassin with three separate brains - and an external nervous system that serves as his ship - Fantomex can cast illusions and hypnotize alongside his incredible fighting skills. One of the many results of the Weapon Plus program, some of Fantomex's background might need to be changed in the MCU. Then again, the unique character could be a fitting way to introduce the government project into the Marvel Studios movies.

Related: Predicting The Next 20 MCU Movies After Avengers 4

Firestar

Firestar's status is actually up in the air given she debuted in 1981's Spider-Man and His Amazing Friends animated series. Her comic debut came in 1985's Uncanny X-Men #183, however, so Fox could very well own the rights to the character. Created to replace the Human Torch on the TV show when his rights couldn't be acquired, Firestar in the Marvel Universe is the fire-powered mutant Anjelica Jones.

Despite her name and appearance, she can actually manipulate microwave radiation, giving her all sorts of abilities. Whether her mutant status is changed along the lines of Scarlet Witch and Quicksilver or she's introduced as one of the first of a new group of enhanced individuals in the MCU, Firestar is overdue for a live-action adaptation.

Corsair and the Starjammers

Created by Dave Cockrum, Corsair was meant to lead an intergalactic team of pirates in their own comic for Marvel. Unfortunately for Cockrum, the series was never picked up and he decided to convince X-Men writer Chris Claremont to add them into his book.

Debuting in 1977's X-Men #104, Corsair was reimagined as Scott Summers' dad to give him a reason to exist in the book. His story saw him and his wife abducted by the Shi'ar after the Summers' plane was shot down and Scott and Alex were left as orphans. Major Christopher Summers watched as his wife was murdered by the Shi'ar and he was thrown into a slave pit. But it was there he met his future Starjammers and was reborn as the space pirate Corsair. Introducing the Starjammers into the Guardians of the Galaxy franchise would be a cinch, while Corsair's true identity could either be altered or saved for when Cyclops officially joins the MCU.

Related: Times The Avengers Fought Other Superhero Teams

Sunfire

Born Shiro Yoshida, Sunfire is one of the few prominent Japanese mutants in the Marvel Universe. Created by Roy Thomas and Don Heck and debuting in 1970's Uncanny X-Men #64, Sunfire can fly and manipulate fire and plasma for both offensive and defensive powers. Thanks to his more cantankerous nature, he's never served long with the X-Men, instead hopping around to teams like Big Hero 6 and the Avengers. Like Firestar, Sunfire could have his backstory changed or be one of the first mutants we meet, but is distinct enough to work by himself.

Mojo

Essentially a grotesque version of the Grandmaster from Thor: Ragnarok, Mojo is an optimal X-Men villain to join the MCU as he's not actually a mutant. An alien from the race known as the Spineless Ones, Mojo abducts beings from around the universe and puts them in his televised death-match. Everything about the character is designed to hold an ugly mirror up to society's obsession with entertainment and schadenfreude. '90s kids will love seeing the eccentric rogue from the X-Men: Animated Series on the big screen and Mojo would make a great foil for the likes of the Guardians of the Galaxy or future cosmic heroes in the MCU.

Molecule Man

Molecule Man surrounded in energy in Marvel Comics

Created by Stan Lee and Jack Kirby for 1963's Fantastic Four #20, Owen Reece became the Molecule Man when a particle accelerator accident gifted him the ability to warp reality itself. He served for years as a foe for various heroes, eventually gaining a sort of tragic identity as an occasional hero and reluctant antagonist. It was his role in reshaping the Marvel Universe ahead of 2015's Secret Wars, however, that makes him an intriguing fit for the MCU.

Related: Marvel's Most Dangerous Supervillains Right Now

There's a decent chance Avengers 4 will be Secret Wars, and Molecule Man is essentially the powerhouse behind Doctor Doom's plan to save the multiverse and reshape reality under his rule. While an adaptation of Secret Wars would undergo massive changes, Molecule Man is just the sort of cosmic character that would work well in Phase 4 of the MCU.

Kang the Conqueror

Kang The Conqueror floating on anti-grav seat in Avengers comics

One villain Marvel fans have long been hoping to see on the big screen is the time-traveling Kang the Conqueror. The character's backstory is ever-changing and convoluted, involving multiple versions of himself from across different timelines. One constant, though, is that he's Nathaniel Richards, the distant relative of the Fantastic Four's founder and his offspring.

Introducing Kang without his prime heroes might seem tricky, but his mysterious background would be a neat way to tease the villain out in a way similar to Thanos (perhaps before revealing his connection to Marvel's First Family, if the Fantastic Four can ever be in the MCU). Created by Lee and Kirby and with decades of stories involving him fighting Earth's Mightiest Heroes, Phase 4 of Marvel's film universe seems destined to introduce some version of Kang.

Impossible Man

Impossible Man is a left-field choice, but James Gunn and Taika Waititi look like they'll have a big future in the MCU; with those two around, the introduction of the irreverent and absurdist character like this seems more and more probable. Unsurprisingly created by Lee and Kirby, Impossible Man first appeared in 1963's Fantastic Four #11. Marvel's original superhero team often mixed scientific adventures with heaps of camp and absurdism, but even without them, there's all sorts of fun the right creative could have with Impossible Man.

Similar to DC's Mr. Mxyzptlk, Impossible Man trades that character's reality-warping for shapeshifting and teleporting. He also knows everything about Earth and its culture, making him the ultimate fanboy. The MCU hasn't gone into sheer absurdism yet, but Impossible Man would allow some interesting and entertaining avenues to be opened up in Phase 4.

Next: Every Movie Franchise Disney Has Bought From Fox