!Swamp Thing
->'''AKA:''' Alec Holland

* [[spoiler:AnthropomorphicPersonification]]
* {{Badass}}: He delivered a CurbStompBattle to ''ComicBook/{{Batman}}''. Nuff says.
** BadassBookworm: Well, Alec used to be a scientist.
* BecomingTheMask
* BerserkButton: Don't touch Abby. Really, just don't.
* BewareTheNiceOnes
* CreepyGood
* [[spoiler:DeadAllAlong: After the retcon.]]
* ElementalEmbodiment
* GaiasVengeance
* HorrifyingHero: He is a mass of plants assuming a vaguely humanoid form, several times taller than a regular human being. Still pretty much a good guy.
* InterspeciesRomance: With Abby.
* [[spoiler:LightEmUp: Thanks to the whole ComicBook/BrightestDay shenigans.]]
* NatureHero: He ''is'' nature.
* PlantPerson
* SuperPowerLottery:
** BizarreAlienSenses: In the "vegetable sex" scene, Abigail temporarily experiences Swamp Thing's ability to sense life force, and perceives the wetlands as a shimmering field of glowing vegetation, dotted with bright life-sparks of animals.
** ElementalPowers
*** GreenThumb
** HealingFactor: UpToEleven; he can rebuild his body out of ''any'' mass of vegetation, even if it has been completely blown up. This borders on ResurrectiveImmortality.
** SuperStrength
* TomatoInTheMirror: [[spoiler:He never ''was'' Alec Holland. He's just a ghost in weeds.]]
** Averted in the new 52 where Holland was brought back to life and became swampthing.

!Abby Arcane Holland
Swamp Thing's LoveInterest (later wife), and Dr Arcane's niece.

* BoyishShortHair: In the ''ComicBook/{{New 52}}''.
* [[spoiler:DistaffCounterpart: Of a sort to Swamp Thing as the Avatar of the Black.]]
* HappilyMarried: Eventually, to Swamp Thing.
* [[MadScientistsBeautifulDaughter Mad Scientist's Beautiful Niece]]
* InterspeciesRomance: With Swamp Thing.
** RescueRomance
* MysticalWhiteHair
** SkunkStripe: Inverted. She has white hair with a black stripe.
* PsychicPowers
** MindOverMatter
** {{Telepathy}}

!Anton Arcane
Abby's uncle and Swamp Thing's ArchEnemy, Arcane is an EvilSorcerer MadScientist [[ImmortalitySeeker obsessed with gaining immortality]]. To this end, he has tried several times to get his hands on the Swamp Thing's body.

* [[spoiler:AndIMustScream: While in Hell, spiders lay eggs inside his body that hatch and eat their way out, causing him awful pain for eternity. To make things worse, the whole thing include a case of YearInsideHourOutside.]]
* ArchEnemy: To Swamp Thing.
* AxeCrazy
* BackFromTheDead: Death seems to be more of an inconvenience, really.
* BaldOfEvil
* BigBad
* DemonicPossession: When he managed to escape Hell, he used this to interact with people, even possessing [[spoiler: Matt Cable]] for a time.
* DisproportionateRetribution: Completely ruined his niece's life just because she turned down his request of her becoming his apprentice.
* EvilSorcerer
* EvilUncle: To Abby.
* HeelFaceTurn: Though obviously, [[StatusQuoIsGod it didn't stick]].
* ImmortalitySeeker: Towards this end, he often plotted to steal Swamp Thing's indestructible body to inhabit.
* JokerImmunity: As noted abouve, he has been killed an incredible number of times, but he ''always'' manages to come back and torment the Swamp Thing again.
* MadScientist
* [[spoiler:{{Necromancer}}: When he takes over the Rot]]
* OneWingedAngel: Has at several times turned himself into various kind of hulking monsters through his experiments.
* RealityWarper: Used for horrific results when he [[spoiler: possessed Matt Cable]].
* SameCharacterButDifferent: By far one of the villains who has changed the most over the course of years, to the point it's difficult to find a picture appropriate for his page.
* SpiderPeople: In his third appearance, he became a cybernetic monstrosity, half spider, half zombie, with one compound eye piloting a aircraft shaped like a dragonfly.
* TakeOverTheWorld: Seemingly Anton Arcane's ultimate goal. Later, he had the power to do so when he took possession of [[spoiler: Matt Cable's body and his reality warping abilities]]. And during [[spoiler: ''ComicBook/{{Rotworld}}'', we saw what the world would be like under Arcane's rule]].

!Floronic Man
->'''AKA:''' Jason Woodrue
[[caption-width-right:148:Jason Woodrue]]

* BreakoutVillain: He started out as a fairly minor villain from ''ComicBook/TheAtom''. Then Alan Moore used him for his own take on Swamp Thing, and he quickly got a boost in popularity.
* GaiasVengeance: Briefly attempts to do this after his contact with the Green, believing he is saving Earth from mankind by killing all non-plant life. Swamp Thing gets him out of it when he points out plants also ''need'' animals to survive.
* GoMadFromTheRevelation: He once managed to use Swamp Thing's body to contact the Green. The experience drove him insane, to the point he tried to exterminate all non-plant life on Earth.
* HeelFaceRevolvingDoor: Briefly became a hero during ''ComicBook/TheNewGuardians'' series. He however reverted back to be a villain after the death of most of his teammates.
* OffWithHisHead: Happened to him in ''Batman: Shadow of the Bat''. Twice. [[GoodThingYouCanHeal Good thing he can heal]], indeed.
* PlantPerson
* RoguesGalleryTransplant: Originally a small-time baddie who bounced back and forth between Franchise/{{Batman}} and ComicBook/TheAtom. Considering [[BreakoutVillain what fighting Swamp Thing did to his popularity]], the change was for the best.
* VillainousBreakdown: Has several in the space of a few issues.
* WasOnceAMan

[[caption-width-right:148:John Constantine]]

* AntiHero: He technically is a good guy, but [[AllergicToRoutine his motivations]] to do good are entirely selfish, and his methods tend to be morally ambiguous at best.
* BadassLongcoat: And a ''sentient'' one, at that.
* BreakoutCharacter: Ended up becoming so popular he eventually got his own series.
* JerkAss[=/=]JerkWithAHeartOfGold
* TheMentor: to Swamp Thing.
** TricksterMentor

!Matt Cable

Abby's first husband, a government agent.

* RealityWarper: Acquired these abilities from shock treatments designed to wipe his memory clean.
* InspectorJavert: At first.
* {{Transplant}}: He became Matthew the Raven in ''ComicBook/TheSandman''.

!The Parliament of Trees

* OmniscientCouncilOfVagueness

!The Patchwork Man

* FrankensteinsMonster

!Tefé Holland
[[caption-width-right:148:Tefé Holland]]

The daughter of Swamp Thing and Abby, conceived when Swamp Thing was using John Constantine's body.

* ExtraParentConception: As noted above, she was conveived by Swamp Thing using John Constantine's body to impregnate Abby.
* HalfHumanHybrid: half-human, half-elemental.
* MysticalWhiteHair: Just like her mother, only without the SkunkStripe.

!The Un-Men

* MixAndMatchCritters

!The Word