# Killer Croc
**Killer Croc** (Waylon Jones) is a supervillain in [DC Comics](https://www.edgepedia.org/dc-comics), a longtime adversary of Batman distinguished by a rare genetic condition that gives him a crocodilian appearance, enhanced strength, and durability. He operates from the sewers of [Gotham City](https://www.edgepedia.org/gotham-city) and has served on the [Suicide Squad](https://www.edgepedia.org/suicide-squad).[1](https://www.dc.com/characters/killer-croc)
| Key fact | Detail |
|---|---|
| Real name | Waylon Jones |
| Creators | Writer Gerry Conway and artist Gene Colan[2](https://www.dcuguide.com/Killer_Croc_%28Waylon_Jones%29_Chronology) |
| First appearance | Detective Comics #523 (February 1983): "Inferno"[2](https://www.dcuguide.com/Killer_Croc_%28Waylon_Jones%29_Chronology) |
| Full debut | Batman #357 (March 1983): "Squid," which also introduces Jason Todd[3](https://www.dcuniverseinfinite.com/comics/book/batman-1940-357/ca2e3e47-15db-4051-8744-ba113bf65daf) |
| Named condition | Epidermolytic hyperkeratosis, a condition causing the skin to harden and appear lizard-like[4](https://www.dc.com/graphic-novels/batman-arkham-2015/batman-arkham-killer-croc) |
| Powers | Enhanced strength, durability, razor-sharp teeth and claws, expert wrestler, unrivaled swimmer[1](https://www.dc.com/characters/killer-croc) |
| Base of operations | Gotham City[1](https://www.dc.com/characters/killer-croc) |
## Origin and character
According to DC's official character profile, Waylon Jones was born with a rare genetic condition that gives him a crocodilian appearance. Raised by an abusive aunt who mocked his deformity, he ran away and joined the circus, working as a sideshow strongman under the name "Killer Croc." He later moved to Gotham City and began a life of crime that brought him into repeated conflict with Batman.[1](https://www.dc.com/characters/killer-croc) A DC collected-edition page gives the condition a clinical name, epidermolytic hyperkeratosis, described as causing the skin to harden and appear lizard-like.[4](https://www.dc.com/graphic-novels/batman-arkham-2015/batman-arkham-killer-croc) The 2016 film publicity profile adds rage issues and cannibalistic tendencies to the character's portrayal, under the nickname "King of the Sewer."[5](https://time.com/4435501/suicide-squad-villains-harley-quinn-joker-enchantress/)
## Publication history
Killer Croc was introduced in [Detective Comics](https://www.edgepedia.org/detective-comics) #523 (February 1983) in the story "Inferno," then featured in a 1983 arc across Batman and Detective Comics: Batman #357 "Squid" and Detective Comics #524 "Deathgrip" ran in March 1983, followed by further installments through May 1983.[2](https://www.dcuguide.com/Killer_Croc_%28Waylon_Jones%29_Chronology) DC Universe Infinite's listing for Batman #357 states it features the first appearance of both [Jason Todd](https://www.edgepedia.org/jason-todd) and Killer Croc, written by Gerry Conway with pencils by Don Newton.[3](https://www.dcuniverseinfinite.com/comics/book/batman-1940-357/ca2e3e47-15db-4051-8744-ba113bf65daf) DC's own character page, however, lists the first appearance as [Batman](https://www.edgepedia.org/batman-comic-book) #357 (1984); the two sources differ on the issue and the year.[1](https://www.dc.com/characters/killer-croc)
**Pre-Crisis versus post-Crisis.** In pre-Crisis continuity (before the 1985 to 1986 reset), Killer Croc killed Jason Todd's parents, which set Todd on the path to becoming Batman's new [Robin](https://www.edgepedia.org/robin-character). A later account notes that DC editorial gave writer Max Collins latitude to re-imagine Jason Todd's origin, so the omission of Croc from the retold history was not deliberate.[6](https://www.dcinthe80s.com/2016/07/know-your-suicide-squad-killer-croc.html) The historian Anthony M. Caro argues that the original pre-Crisis Croc was built up with anticipation stories in the manner later used for Bane, and that the post-Crisis rewrite discarded most of Conway's debut arc and softened the character's cunning menace.[7](https://comicbookhistorians.com/the-villian-who-would-be-king-remembering-the-pre-crisis-killer-croc-by-anthony-m-caro/)
**A shifting design.** Croc began as a man with crocodile-like skin, but his appearance has grown more inhuman across decades of stories; DC's profile describes him today as a bestial form with a reptilian head, razor-sharp claws and teeth, and a tail, paired with a limited intellect.[1](https://www.dc.com/characters/killer-croc) In the "Hush" storyline, [Jim Lee](https://www.edgepedia.org/jim-lee) drew him with a huge monstrous body attributed to a mutating virus, while the next arc, [Brian Azzarello](https://www.edgepedia.org/brian-azzarello)'s *Batman: Broken City* (beginning in Batman #620, October 2003), returned him to a more human, still reptilian body working as a street-level enforcer for organized crime.[8](https://www.dccontinuityproject.com/killer-croc.html) Commentators have also noted a sympathetic through-line: in Detective Comics #1026 (2020), Peter Tomasi cast Croc as a misunderstood monster whom Batman saves from a toxic chemical hazard in the sewers.[9](https://dccomicsnews.com/2020/08/25/review-detective-comics-1026/)
## Other media
Killer Croc made his live-action debut in the 2016 film *Suicide Squad*, played by [Adewale Akinnuoye-Agbaje](https://www.edgepedia.org/adewale-akinnuoye-agbaje); the character profile there lists enhanced speed, strength, and senses, plus reptilian teeth, claws, and skin.[5](https://time.com/4435501/suicide-squad-villains-harley-quinn-joker-enchantress/) He appears in the [Batman: Arkham](https://www.edgepedia.org/batman-arkham) video games, and DC published the 296-page collection *Batman: Arkham – Killer Croc* in June 2016, gathering stories by Gerry Conway, Chuck Dixon, Doug Moench, and others.[4](https://www.dc.com/graphic-novels/batman-arkham-2015/batman-arkham-killer-croc) In DC's Absolute Universe imprint launched with *Absolute Batman* (2024), the relationship is inverted: Bruce Wayne and Waylon Jones are friends, an alliance revealed in the series' early issues.[10](https://as.com/meristation/comics/noticias/el-ultimo-numero-de-absolute-batman-recrea-un-momento-mitico-del-personaje-de-la-manera-mas-brutal-posible-f202602-n/)
## References
1. [Killer Croc | Official DC Character](https://www.dc.com/characters/killer-croc)
2. [Killer Croc (Waylon Jones) Chronology, DCU Guide](https://www.dcuguide.com/Killer_Croc_%28Waylon_Jones%29_Chronology)
3. [Batman (1940-) #357, DC Universe Infinite](https://www.dcuniverseinfinite.com/comics/book/batman-1940-357/ca2e3e47-15db-4051-8744-ba113bf65daf)
4. [Batman: Arkham – Killer Croc, DC](https://www.dc.com/graphic-novels/batman-arkham-2015/batman-arkham-killer-croc)
5. [Everything You Need to Know About the Suicide Squad Villains, TIME](https://time.com/4435501/suicide-squad-villains-harley-quinn-joker-enchantress/)
6. [DC in the 80s: Know Your Suicide Squad: Killer Croc](https://www.dcinthe80s.com/2016/07/know-your-suicide-squad-killer-croc.html)
7. [The Villain Who Would Be King: Remembering the Pre-Crisis Killer Croc, Comic Book Historians](https://comicbookhistorians.com/the-villian-who-would-be-king-remembering-the-pre-crisis-killer-croc-by-anthony-m-caro/)
8. [Killer Croc, DC Continuity Project](https://www.dccontinuityproject.com/killer-croc.html)
9. [Review: Detective Comics #1026, DC Comics News](https://dccomicsnews.com/2020/08/25/review-detective-comics-1026/)
10. [El último número de 'Absolute Batman' recrea un momento mítico del personaje, AS Meristation](https://as.com/meristation/comics/noticias/el-ultimo-numero-de-absolute-batman-recrea-un-momento-mitico-del-personaje-de-la-manera-mas-brutal-posible-f202602-n/)
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*Topic: Encyclopedia › Arts and culture › Visual arts and design › Illustration and illustrators › Concept and production art*
*Initially written Sep 17, 2026 · Reviewed: Sep 30, 2026; Oct 25, 2026 · Edited: Sep 30, 2026; Oct 15, 2026; Oct 25, 2026 · Last review: Oct 25, 2026*
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