With 14 superheroes that start with the letter “X,” this list covers a unique group of heroes from major comic book publishers like Marvel and DC, as well as notable independent creators. Many of these characters have cosmic or mutant origins, showcasing a mix of extraordinary powers from healing and super-speed to energy manipulation and advanced technology. This collection highlights the diversity and creativity found in the superhero world, especially in characters whose names begin with a less common letter.

Explore the complete list below to discover detailed information about each superhero, including their origins, powers, and publishers.

Superheroes This column lists the hero’s name or alias, helping you identify each unique character starting with “X.”

Publisher Here you’ll find the company or creator behind the character, such as Marvel Comics, DC Comics, or Valiant Comics, providing context about their story universe.

First Appearance This tells you where and when the superhero debuted, so you can trace their first steps in comic book history.

Powers This section describes the hero’s abilities, like super strength, flight, or special mutant powers, giving insight into what makes them special.

Description A brief summary of each character’s background, role, and notable traits, helping you understand their place in the superhero world.

Superheroes that start with X

SuperheroesPublisherFirst AppearancePowers
X-23Marvel ComicsNYX #3 (February 2004)Regenerative healing factor, retractable bone claws, superhuman senses, skilled combatant
X-CeptionUnidentifiedUnidentifiedExceptional or unique mutant abilities (conceptual)
X-ManMarvel ComicsAge of Apocalypse Alpha #1 (January 1995)Psionic powers (telepathy, telekinesis, precognition), energy manipulation, superhuman strength
X-O ManowarValiant ComicsX-O Manowar #1 (February 1992)Superhuman strength, flight, energy blasts, invulnerability (via Shanhara armor), advanced technology integration
X-TremeMarvel ComicsX-Treme X-Men #1 (July 2001)Varies (team members)
XanthoDC ComicsWonder Woman Vol 2 #150 (November 1999)Amazonian training, skilled warrior, superhuman strength, durability
XavinMarvel ComicsRunaways Vol 2 #7 (October 2005)Skrull shapeshifting, superhuman strength, durability, energy blasts, power mimicry (Fantastic Four)
XenithMarvel ComicsStarbrand and Nightmask #2 (February 2016)Cosmic powers, energy manipulation, flight, superhuman strength, durability
XenonMarvel ComicsAlpha Flight Vol 1 #89 (October 1990)Energy blasts, flight, superhuman strength, enhanced durability
Xeron the Star-SlayerMarvel ComicsTales to Astonish #91 (May 1967)Advanced technology (blaster rifle, force field generator), skilled space hunter/tracker, enhanced strength
XornMarvel ComicsNew X-Men Annual 2001 (September 2001)Miniature star for a brain, gravitational fields, heat, light, electromagnetic fields, healing, telepathy, energy blasts
XSDC ComicsLegion of Super-Heroes Vol 4 #8 (May 1996)Super-speed, molecular vibration, speed vortex creation, intangible phasing
XylonMarvel ComicsX-Men: True Friends #1 (September 1999)Energy projection, flight, superhuman strength
XylosDC ComicsGreen Lantern Vol 3 #137 (August 2001)Energy absorption and manipulation, superhuman strength

Descriptions

X-23
A female clone of Wolverine, Laura Kinney, known for her adamantium-laced claws and powerful healing factor. She has served with the X-Men and X-Force, struggling with her past as a living weapon.
X-Ception
X-Ception is a conceptual or very obscure character, often associated with fan creations within the X-Men universe. Its powers would likely stem from unique or exceptional mutant abilities, making it an extraordinary individual among mutants.
X-Man
Nate Grey, a powerful mutant from the Age of Apocalypse reality, created from the genes of Cyclops and Jean Grey. He possesses vast psionic abilities, often considered one of the strongest psychics in the Marvel Universe.
X-O Manowar
Aric of Dacia, a Visigoth warrior abducted by aliens, escapes with the sentient X-O Manowar armor. He returns to Earth to reclaim his place, becoming a powerful hero battling threats with the alien suit’s immense capabilities.
X-Treme
X-Treme refers more to the “X-Treme X-Men” team, not a single superhero, who adopted a proactive, aggressive stance against global mutant threats. While not a character, the term encapsulates the powerful and determined nature of its members.
Xantho
An Amazon warrior and member of the Bana-Mighdall tribe, often depicted as a loyal supporter or combatant in Wonder Woman’s adventures. She is a skilled fighter and a prominent Amazonian figure.
Xavin
A Skrullian genderfluid alien who initially comes to Earth to marry Karolina Dean as part of an arranged marriage. Xavin possesses shapeshifting abilities and can replicate the powers of the Fantastic Four due to Super-Skrull training.
Xenith
A powerful cosmic entity and alien from a dying universe, she possesses vast cosmic powers and is often seen as a force of nature. Xenith has encountered various Marvel heroes, including Starbrand and Nightmask.
Xenon
An alien from the planet Xandar, Xenon was a member of the Fraternity of Injustice. He possesses powerful energy manipulation abilities and has clashed with Alpha Flight.
Xeron the Star-Slayer
An alien warrior and hunter who travels the cosmos seeking powerful prey, notably clashing with Namor the Sub-Mariner. He employs advanced alien weaponry and technology in his relentless pursuits.
Xorn
A powerful mutant with a miniature star inside his head, Xorn can manipulate gravity and electromagnetic forces. He was initially introduced as a benevolent healer but later revealed to have a complex and sometimes villainous history.
XS
Jenni Ognats, granddaughter of Barry Allen (The Flash) and cousin of Bart Allen, is a member of the Legion of Super-Heroes from the 30th Century. She possesses incredible super-speed inherited from her famous family.
Xylon
A member of the Shi’ar Imperial Guard, Xylon is a powerful alien with the ability to project energy. He serves the Shi’ar Empire and has clashed with the X-Men during various cosmic conflicts.
Xylos
An alien being composed of living energy who can absorb and manipulate various forms of energy. Xylos has encountered Green Lantern and other heroes in the DC Universe.
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