The Marvel Universe has extremely powerful mutants who are capable of incredible feats. Over the years, the X-Men's strongest mutants were categorized as "omega-level," but they weren't always officially classified. The House of X rebranding revealed an official omega-level mutants list, although there were still some debatable inclusions and absences.

All Omega-level mutants have a specific power with “an undefinable upper limit.” They are crucial to the future of mutantkind and have proven this in numerous comic events over the years. The X-Men always keep a few omegas on the roster to keep the team at an overpowered level to deal with any threat they encounter.

Updated on July 17, 2023, by Scoot Allan: Powerful mutants like Storm and Magneto have taken leadership roles on Krakoa and Arakko. The established list of omega-level mutants has only continued to grow since the new mutant society developed on Krakoa. However, even Marvel's most powerful omega mutants have something to fear in the upcoming Fall of X event that might bring an end to the X-Men's current Krakoan era.

21 Maddie

First Appearance: Deadpool vs. Old Man Logan #1 (October 2017) by Declan Shalvey, Mike Henderson, Lee Loughridge, and Joe Sabino

The X-Men's unique device known as Cerebro has become one of the best tools for pinpointing omega-level mutants globally when their powers first manifest. Cerebro detected a powerful manifestation of a young mutant's abilities and altered the X-Men. Logan investigated and discovered a young mutant named Maddie, though he wasn't the only one searching for her.

A corrupt company called GenForm captured Maddie and experimented on her powerful teleportation abilities. While she had incredible range, anyone who teleported with her was almost instantly killed. Through GenForm's dark experiments, Maddie learned how to control her destructive omega-level mutant abilities before she escaped and disappeared.

20 Brian Morrison

First Appearance: X-Men: Gold #36 (September 2018) by Marc Guggenheim, Pere Pérez, Jay David Ramos, and Cory Petit

When Kitty Pryde had her own roster in X-Men Gold, she led her team to investigate a new mutant with incredibly destructive abilities. Brian Morrison was a 14-year-old teenager who woke up with incredible omega-level mutant abilities one morning. He could generate and manipulate cosmic energy on a powerful scale.

Brian Morrison even manifested an energy form that appeared to protect him from danger while continuing to absorb cosmic energy. Kitty Pryde was able to calm Brian Morrison down so he could return to his human form, though he was shot in the head by a bystander. Pryde was able to get him medical attention and left him with an invite to join the X-Men after he fully recovered.

19 Josh Foley/Elixir

First Appearance: New Mutants #5 (November 2003) by Nunzio DeFilippis, Christina Weir, Mark Robinson, Aaron Sowd, Wayne Faucher, Scott Elmer, Avalon Studios, Ian Hannin, and Rus Wooton

Joshua Foley is a powerful healer and a former member of the New Mutants. As Elixir, he has complete control over the body's biological structure. He can instantly regenerate his own body and recover quickly from injury. That power extends to others as well, and he can cure friends and allies of injury and disease with a simple touch.

However, Elixir's powers developed even more over the years. He discovered he could also inflict disease and death upon his enemies as well. His skin was usually covered in a golden metallic coating, but it turned black whenever he used his powers to kill. Elixir can resurrect himself, and his powers are an essential part of the Krakoan Resurrection Protocols.

18 Rachel Summers/Askani

First Appearance: Uncanny X-Men #141 (January 1981) by Chris Claremont, John Byrne, Terry Austin, Glynis Wein, and Tom Orzechowski

Rachel Summers is a bit of an anomaly in the Marvel universe. She hails from a possible dark future connected to the "Days of Future Past" reality that no longer exists. Rachel is singular in the multiverse and exiled to a time not her own. She has been known as Phoenix, Marvel Girl, Prestige, and other names over the years until she embraced her destiny as Askani.

Askani inherited her mother Jean Grey's powerful abilities to become one of the most powerful Summers-Grey kids. Her unique connection to the Phoenix Force further enhanced her powers as well. Rachel Summers was the first mutant categorized as an omega by the mutant Sentinel Nimrod, but she didn't receive official classification like her mother.

17 Bobby Drake/Iceman

First Appearance: X-Men #1 (September 1963) by Stan Lee, Jack Kirby, Paul Reinman, and Sam Rosen

One of the original X-Men, Bobby Drake’s powers have gradually developed over time. Iceman has quietly become one of the X-Men's most powerful omega-level mutants. He can manipulate the temperature around him and freeze the air’s water vapor to create shields and weapons. He can also transmute his entire body into living ice.

Over the years, Iceman's control over his abilities has become so precise that he can manipulate water and ice on a molecular level. He can even create icy clones of himself and extend his consciousness into snow and ice on the ground. Iceman's omega-level abilities make him almost unkillable, as he can reform his body entirely from ice if shattered.

16 Kevin MacTaggert/Proteus

First Appearance: Uncanny X-Men #119 by Chris Claremont, John Byrne, Terry Austin, Glynis Oliver, and John Costanza

Kevin MacTaggert is a powerful omega-level mutant and the son of Moira X. Proteus can manipulate the surrounding energy at will to warp reality. He is composed of pure psionic power, which burned out his original human form. Kevin developed the need to possess a human body to survive, which only increased his power.

Unfortunately, Kevin's host bodies burned out quickly, especially when he used his reality-warping gifts. He jumped between victims, leaving destruction behind in his wake in his earliest appearances. The Krakoan Resurrection Protocols gave Proteus a new lease on life. His powers not only help bring other mutants back, but he also has an unending supply of blank mutant bodies.

15 Gabriel Summers/Vulcan

First Appearance: X-Men: Deadly Genesis #1 (January 2006) by Ed Brubaker, Trevor Hairsine, Kris Justice, Val Staples, and Dave Lanphear

Vulcan inherited the same energy absorption abilities as his long-lost brothers, Cyclops and Havok. Gabriel Summers is capable of psionically manipulating any kind of energy, which he can absorb and re-channel to create devastating blasts, protective force fields, or even propel himself in flight. Gabriel's traumatic life and death are one of the X-Men's darkest secrets.

As Vulcan, he can manipulate other mutants’ abilities and steal or suppress their powers. The powerful Summers brother could take control of the Shi’ar Empire and seize the throne for himself with his incredible abilities. Vulcan has stood up to other incredibly powerful beings, like Black Bolt and his own brothers, but his rage sometimes gets the better of him.

14 Bennet du Paris/Exodus

First Appearance: X-Factor #92 (July 1993) by Scott Lobdell, Joe Quesada, J. M. DeMatteis, Al Milgrom, Cliff van Meter, Glynis Oliver, and Richard Starkings

A 12th Century French crusader, Bennet du Paris, was a mutant with incredible psionic powers. He was forever transformed after he encountered Apocalypse, who further enhanced his omega-level abilities before trapping him for centuries in a hidden crypt. Exodus is physically enhanced and incredibly strong, though his omega-level ability is his vast psionic power.

Exodus is one of the most gifted telekinetic mutants in the Marvel universe. His telekinesis is further bolstered by the belief of others around him, which psionically strengthens him. Exodus has turned into a psionic vampire at times to maintain and boost his own abilities. Thankfully, Krakoa provided power for mutants who require an extra source of energy to survive.

13 Stryfe

First Appearance: New Mutants #87 (March 1990) by Louise Simonson, Rob Liefeld, Bob Wiacek, Mike Rockwitz, and Joe Rosen

The evil mutant villain known as Stryfe doesn't fall on any official omega-level mutant lists, as he was born thousands of years in the future. Apocalypse infected Cyclops' young son Nathan Summers with a techno-organic virus, and he was sent to survive in the X-Men's future as Cable. When he first arrived, Nathan was cloned in case he wasn't able to survive the T/O virus.

Apocalypse kidnapped and raised the young cloned infant as Stryfe to become his powerful heir. Nathan Summers/Cable has the same mutant potential as Stryfe, but the T/O virus reduced the original's powers. Stryfe has access to their full telepathic and telekinetic abilities, which have the same destructive potential as the Phoenix Force.

12 Matthew Malloy

First Appearance: Uncanny X-Men #23 (July 2014) by Brian Michael Bendis, Kris Anka, and Joe Caramagna

Following the death of Professor X in the Avengers vs. X-Men event, his former students heard the reading of his last will and testament. It included a couple of revelations that shocked the X-Men, including his previously unknown marriage to Mystique. However, it was the existence of the omega-level mutant named Matthew Malloy that really surprised and ultimately threatened the X-Men.

Xavier had first encountered Malloy shortly after his mutant powers first manifested and he accidentally killed his parents. Xavier erased his memories and instilled psychic blocks. When the X-Men made contact, Malloy killed most of them in a violent outburst of his powers. Tempus went back in time with a past version of Xavier to keep his parents from meeting, erasing Malloy from reality.

11 William Braddock/Monarch

First Appearance: Captain Britain #9 (December 1976) by Chris Claremont, Herb Trimpe, Fred Kida, G. Roussos, and Irving Watanabe

The eldest child of the Braddock family, James "Jamie" Braddock, Jr. discovered he possessed the ability to warp reality when he was an adult. His powers allowed him to pull on quantum strings to manipulate the world around him. As Monarch, he is capable of teleporting, warping bodies into painful, horrifying shapes, or completely unleashing chaos into the universe.

As his powers continued to grow, Jamie Braddock became one of the most dangerous and unpredictable mutants on Earth. Monarch was eventually killed by his own siblings in order to protect the multiverse from his power. The Five on Krakoa brought him back, and he used his abilities to become the unstable ruler of Avalon and a true Monarch in Otherworld.

10 Absalon Mercator/Mister M

First Appearance: District X #2 (August 2004) by David Hine, David Yardin, Alejandro Sicat, Andy Troy, Richard Starkings and Comicraft

A resident of New York City’s “Mutant Town,” Absolon Mercator was a loner who appreciated a quiet life. However, he used his abilities to make a living before turning on Mutant Town. With near-limitless psionic power, Mister M can control subatomic matter and energy. He can generate heat, fire, and even nuclear energy while reshaping matter at will.

Combined with his ability to phase through objects, Mister M can tinker with the interiors of complex machinery to break or control it. Mister M appeared to die after losing his powers temporarily, but his body disappeared. Absalon reappeared in Otherworld as the ruler of Mercator. Apocalypse recruited him to guard the mystical Siege Perilous with his powerful abilities.

9 Hope Summers

First Appearance: X-Men #205 (November 2007) by Mike Carey, Chris Bachalo, Tim Townsend, Brian Reber, and Cory Petit

M-Day was an extinction-level event that left the mutant race decimated. When the first mutant was born after the events of M-Day, she was believed to be the last hope for the survival of mutantkind. The X-Men fought against other groups like the Marauders and the Purifiers to protect the young mutant.

Hope was sent into the future under Cable's watch, who named her Hope Summers. He trained Hope in hand-to-hand combat and all kinds of weapons. However, Hope's true power was her ability to copy and augment the powers of nearby mutants. Hope reignited the mutant gene across the planet, and her powers proved instrumental in The Five's Resurrection Protocols on Krakoa.

8 Nate Grey/X-Man

First Appearance: X-Man #1 (January 1995) by Jeph Loeb, Steve Skroce, Mike Sellers, Cam Smith, Bud Larosa, Will Conrad, Mike Thomas, and Comicraft

When the omega-level mutant known as Legion went back in time, he accidentally killed Charles Xavier and created an alternate timeline. It became known as the Age of Apocalypse after the eternal mutant En Sabah Nur violently took over North America in a world without Xavier. A familiar but slightly different version of Cable named Nate Grey appeared in the post-apocalyptic timeline.

Mr. Sinister used the genetics of both Scott Summers and Jean Grey to create Nate Grey, unlike Cable who came from Jean Grey's clone Madelyne Pryor. This only increased Nate Grey's natural psionic potential, making him the most powerful mutant in his world. While Nate Grey hasn't been officially classified as an omega due to being a multiversal exile, there's no denying his power.

7 Great Ring of Arakko

First Appearance: X-Men #12 (September 2020) by Jonathan Hickman, Leinil Francis Yu, Sunny Gho, and Clayton Cowles

After the X-Men formed their new mutant society on Krakoa, they discovered the ancient history of their new home. It was originally known as Okkara before separating into two separate islands, Krakoa and Arakko. A powerful group of omega-level mutants ruled as the Great Ring of Arakko, which mirrored the X-Men's Quiet Council on Krakoa.

The Great Ring of Arakko featured different sections that ruled at different times. With the exception of the Night Seats, all of the members of the Great Ring were omega mutants. After the X of Swords tournament, Storm led a new Great Ring of Arakko on Mars. Omega-level mutants from Arakko like Lactuca, Xilo, and Sobunar also joined Storm and Magneto on the Great Ring.

6 Erik Lensherr/Magneto

First Appearance: X-Men #1 (September 1963) by Stan Lee, Jack Kirby, Paul Reinman, and Sam Rosen

Erik Lensherr is one of Marvel’s most notorious supervillains. As Magneto, the master of magnetism can manipulate Earth’s entire electromagnetic field. Magneto can generate protective force fields, project powerful electromagnetic blasts, and propel himself in flight. He's even proved capable of using his powers to survive in deep space.

Magneto can manipulate gravity and control iron in a person’s bloodstream. He is a force of nature who can use his powers in several creative ways as one of the most powerful omega-level mutants. He’s rightfully gained a reputation as one of Earth’s most feared mutants, but he became one of their leaders in the Krakoan Age.

5 Ororo Munroe/Storm

First Appearance: Giant-Size X-Men #1 (May 1975), by Len Wein, Dave Cockrum, Peter Iro, Glynis Wein, and John Costanza

Ororo Munroe was originally hailed as a weather goddess in her homeland of Kenya. She became Storm when she joined one of the first teams of X-Men. Storm can control and manipulate weather, summoning fog, rain, hail, powerful winds, or thunderstorms as she needs. Her powers also aren’t restricted to Earth.

Storm has summoned natural energy to defeat enemies in space. She can tap into the weather systems of other planets, which has helped her as Regent of Arakko and leader of the Brotherhood on Mars. Storm's deep connection to nature allows her to see the world's energy and manipulate it, making her a deadly omega-level threat.

4 Jean Grey/Marvel Girl

First Appearance: X-Men #1 (September 1963) by Stan Lee, Jack Kirby, Paul Reinman, and Sam Rosen

One of Professor X’s original X-Men, Jean Grey’s powers proved to be incredibly strong even at a young age. Gifted with various psionic abilities, Charles Xavier felt compelled to hide the true extent of her power, locking some of her abilities away in her mind.

Even with her true potential held back, Jean Grey was still an incredible telepath and telekinetic. Her empathetic powers are so impressive that they attracted the cosmic Phoenix Force. It unlocked the full extent of her powers and enhanced her abilities, turning her into a cosmic powerhouse. While the Phoenix Force moved on, Marvel Girl was still an omega-level telepath.

3 Quentin Quire/Kid Omega

First Appearance: New X-Men #134 (January 2003) by Grant Morrison, Keron Grant, Norm Rapmund, Chris Chuckry, Richard Starkings and Saida Temofonte

Quentin Quire is a rebellious young hero capable of extraordinary feats as one of the strongest telepaths on Earth. He’s capable of constructing psionic shields and weapons, manipulating minds, casting illusions, and influencing others telepathically. However, his true power lies in his intelligence.

Quentin can absorb information into his super-genius mind at a startling rate, while his brain conjures millions of thoughts every second. As Kid Omega, Quire embraced his omega-level status to become one of the most powerful members of Krakoa's X-Force.

2 David Haller/Legion

First Appearance: New Mutants #25 (March 1985) by Chris Claremont, Bill Sienkiewicz, Glynis Wein, Tom Orzechowski and Lois Buhalis

It wasn't much of a surprise to fans that Professor X’s son would be a powerful telepath and telekinetic. David Haller was capable of causing incredible destruction with his mind. However, his powers evolved significantly when he discovered multiple alters residing within his psyche. The alters each had their own distinct personality and destructive power.

As Legion, David originally only had three distinct alters with telepathic, pyrokinetic, and telekinetic abilities. However, Haller's omega-level ability is actually power manifestation, and he continues to develop new alters with potentially thousands of different powers. There's no doubt that Legion is one of the strongest omega-level mutants.