# List of Marvel Comics characters: K
This list covers notable [Marvel Comics](https://www.edgepedia.org/marvel-comics) characters, teams, and organizations whose names begin with the letter K, drawing on Marvel's own character and series catalogs and on detailed character profiles. Entries range from long-running heroes such as Ka-Zar to teams like Cadre K and cosmic figures such as the Super-Skrull Kl'rt.
| Entry | Type | Key facts |
|---|---|---|
| Ka-Zar | Hero | Headlined multiple Marvel series: 1970–1971, 1974–1977, 1997–1999, and 2011, plus a Ka-Zar Annual in 1997[1](https://www.marvel.com/comics/series) |
| Kid Juggernaut | Hero | Stars in *Kid Juggernaut: Marvel's Voices Infinity Comic*, running 2024 to present[1](https://www.marvel.com/comics/series) |
| Knull | Villain | Received his own ongoing series beginning in 2026; the series' character index lists 34 characters, including Gorr the god killer[1](https://www.marvel.com/comics/series) • [2](https://www.comics.org/series/232077/characters/) |
| Cadre K | Team | K-class Deviant Skrulls gathered by Charles Xavier; first appearance *Maximum Security: Dangerous Planet* #1 (November 2000, by Kurt Busiek and Jerry Ordway)[3](https://marvel.fandom.com/wiki/Cadre_K_%28Earth-616%29) • [4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html) |
| Department K | Organization | A covert special branch of the Canadian government on Earth-616[5](https://marvel.fandom.com/wiki/Department_K_%28Earth-616%29) |
| Super-Skrull (Kl'rt) | Villain | A decorated Skrull soldier endowed with the powers of the Fantastic Four, delivered by an interstellar beam and stronger than the originals when powered[6](https://www.marvel.com/characters/super-skrull/) |
| K'Rel | Character | An Earth-616 character documented in the Marvel Database with a dedicated entry[7](https://marvel.fandom.com/wiki/K%27Rel_%28Earth-616%29) |
## Cadre K
**Cadre K** is a team of mutant Skrulls, described as "K-class Deviant Skrulls", who were gathered into a group by Charles Xavier as an equivalent of his X-Men, to fight the Skrull Empire, rescue their kind from being culled at birth, and agitate for mutant rights[3](https://marvel.fandom.com/wiki/Cadre_K_%28Earth-616%29). The team first appeared in *Maximum Security: Dangerous Planet* #1, dated November 2000, by Kurt Busiek and Jerry Ordway; the French edition appeared in *X-Men* (Marvel France) #58 in November 2001[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
The K-class Deviants were Skrulls whose mutations gave them particular superpowers. They were originally eliminated after birth, and were later exploited by a Skrull faction that had joined [Apocalypse](https://www.edgepedia.org/apocalypse)[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html). After the affair of the Twelve, Xavier left with the K-class Deviants into space to train them in their powers and in the life of superheroes, then founded a group on the model of his X-Men with the six best of them[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
The six members are:
- **Fiz**, who escaped from the camp where he was held and secretly followed the X-Men before allying with them; he first appeared in *X-Men* #95 (December 1999, by [Alan Davis](https://www.edgepedia.org/alan-davis) and Tom Raney)[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
- **Z'Cann**, a young telepath who can also transfer her knowledge psychically into another person's mind[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
- **Nuro**, who can stretch parts of his body[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
- **R'tee**, who projects spikes from his body and can use them to climb walls[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
- **Spunje**, who absorbs any energy and converts it into destructive energy blasts, becoming invulnerable to energy attacks[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
- **Goroth**, whose mutant powers are unknown in the profile[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
Like all Skrulls, the members are shapeshifters who can alter their appearance at will, though maintaining a transformation requires consciousness; their transformation is limited to between 0.75 and 1.5 times their original mass, and Skrulls cannot imitate the special characteristics of the people or objects they copy[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
The team later settled on Earth at the Sagittarian Ranch in [South Dakota](https://www.edgepedia.org/south-dakota), caring for Skrulls who had been convinced by Mister Fantastic that they were cows, and were ultimately allowed to live in peace there after [Captain America](https://www.edgepedia.org/captain-america) took their side when [S.H.I.E.L.D.](https://www.edgepedia.org/s-h-i-e-l-d) intervened[4](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html).
## Super-Skrull (Kl'rt)
**Kl'rt** is a decorated soldier and warrior of the Skrull empire who was chosen to undergo a process endowing him with all the powers of the [Fantastic Four](https://www.edgepedia.org/fantastic-four); when powered by an interstellar beam, he is far stronger than the originals[6](https://www.marvel.com/characters/super-skrull/). Marvel's history of the character explains the mechanism: through a satellite relay on the Skrull homeworld Tarnax IV, the Skrulls beamed cosmic energy into Kl'rt through power receptors implanted in his body[8](https://www.marvel.com/articles/comics/super-skrull-history-klrt-in-the-comics?linkId=227109854).
## Series and publications beginning with K
Marvel's A-to-Z series catalog lists several K-titled publications. Ka-Zar headlined four separate series runs between 1970 and 2011 in addition to a 1997 annual[1](https://www.marvel.com/comics/series). *Kid Juggernaut: Marvel's Voices Infinity Comic* has run from 2024 to the present[1](https://www.marvel.com/comics/series). A *Knull* series began in 2026, and the Grand Comics Database records 34 characters appearing in that series, among them Gorr the god killer, whose listed first appearance dates to 2013[2](https://www.comics.org/series/232077/characters/). Other K-titled listings include *Kid Colt Digital Comic* (2009)[9](https://share.marvel.com/comics/series).
## References
1. [A to Z in Marvel Comic Series, Marvel.com](https://www.marvel.com/comics/series)
2. [GCD :: in series Knull (2026 series)](https://www.comics.org/series/232077/characters/)
3. [Cadre K (Earth-616), Marvel Database](https://marvel.fandom.com/wiki/Cadre_K_%28Earth-616%29)
4. [Fiche encyclopédique (Equipes) : Cadre K (le), Marvel-World.com](https://www.marvel-world.com/encyclopedie-3529-fiche-cadre-k-le-biographie.html)
5. [Department K (Earth-616), Marvel Database](https://marvel.fandom.com/wiki/Department_K_%28Earth-616%29)
6. [Super-Skrull Powers, Enemies, History, Marvel.com](https://www.marvel.com/characters/super-skrull/)
7. [K'Rel (Earth-616), Marvel Database](https://marvel.fandom.com/wiki/K%27Rel_%28Earth-616%29)
8. [The Super-Skrull, Explained, Marvel.com](https://www.marvel.com/articles/comics/super-skrull-history-klrt-in-the-comics?linkId=227109854)
9. [All Series, Marvel Comics](https://share.marvel.com/comics/series)
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*Topic: Encyclopedia › Arts and culture › Screen and stage › Film and television › Film characters and fictional worlds › Marvel Comics characters*
*Initially written Sep 17, 2026 · Reviewed: Sep 30, 2026; Oct 25, 2026 · Edited: Sep 30, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
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License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license