-->''Change! '''Change''', O form of man!''\\
''Release the might from fleshy mire!''\\
''Boil the blood in heart of '''fire'''!''\\
''Gone! '''Gone'''! -- the form of man --''\\
''Rise, the Demon '''Etrigan'''!!''
-->-- Jason Blood

Created by Creator/JackKirby and appearing for the first time in ''The Demon'' #1 (August, 1972), Etrigan has played many smaller roles in several DC comics from ''ComicBook/TheSandman'' to ''ComicBook/WonderWoman'', with occasional stories and miniseries wholly to himself (such as in anthology series ''ComicBook/WednesdayComics''), and a number of ongoings, including Kirby's original series, a fifty-nine issue run, not counting annuals, during TheNineties, and Creator/JohnByrne's ''Blood of the Demon''.

Etrigan is a yellow skinned and red eyed demon who was summoned by Merlin to aid Camelot against the forces of Morgaine le Fay, who later became a recurring opponent in the series. After the fall of Camelot, Merlin sent Etrigan to roam the earth in the disguise of a man. DependingOnTheWriter, Etrigan is either bonded to one of KingArthur's noblemen or the human Jason Blood was merely created by Merlin's spell. In the present, Jason Blood, a well respected authority on demonology, is well versed in the skill of magic and has helped other superheroes in several occasions. Etrigan's habit of speaking in verses is a later addition, introduced by Creator/LenWein in ''ComicBook/DCComicsPresents'' #66, but really established and explained by Creator/AlanMoore. This also makes him fall under almost every rhyme Trope there is.

Etrigan's powers include superhuman strength, speed, durability, regenerative powers, hellfire projection, teleportation, and a high knowledge of maleficium. Jason Blood on the other hand is precognitive, as well as a capable sorcerer himself.

Etrigan has also appeared in various animated adaptations of DC comics, being played by Creator/BillyZane in ''WesternAnimation/BatmanTheAnimatedSeries'', Michael T. Weiss in ''WesternAnimation/JusticeLeague'', Creator/DeeBradleyBaker in ''WesternAnimation/BatmanTheBraveAndTheBold'' and ''WesternAnimation/JusticeLeagueTheFlashpointParadox'', and Christopher S. Field in ''VideoGame/DCUniverseOnline''.

His latest ongoing, ''ComicBook/DemonKnights'', sees Etrigan leading a RagtagBunchOfMisfits in DarkAgeEurope.

!!Tropes associated with Etrigan include:

* AmbiguousGender: Klarion's cat familiar Teekl alternates between male and female DependingOnTheWriter. Kirby's version (and appearance in an animated adaptation) was female (including an alternate humanoid form), while Morrison's is characterized as male.
* AristocratsAreEvil:
** In continuities where Etrigan is a true demon, not merely a construct of Merlin's, he's depicted as at least a prince of Hell. While he was under the pen of Creator/GarthEnnis, he was briefly king of it.
** Baron Von Evilstein.
* {{Badass}}: Etrigan was rampaging through Hell when he was still a child and even higher level demons are afraid of the havoc and destruction he commits. He frequently goes hand to hand with people such as Lobo and Superman, Wonder Woman and other DC heavy hitters.
* BadassNormal: Jason Blood is no pushover either. Blood was briefly a member of the Justice League, and while he did invoke Etrigan once out of desperation, he was a member for his own power, not for the Demon's.
* BigBrotherBully: Etrigan was this to his brother Scapegoat.
* TheBigGuy: Usually when teaming up.
* BiggerBad: During [[CrisisCrossover the Day of Vengeance crossover]], Etrigan was ultimately the one behind the scramble for control over ComicBook/TheSpectre, though he apparently knew better than to try for control himself. This resulted in [[ComicBook/GreenLantern Hal Jordan]] taking the role, and Etrigan getting to [[ForTheEvulz laugh at the demons who thought they could.]]
* BlessedWithSuck: Jason is thousands of years old, has witnessed the birth and fall of nations, traveled the world, and become a future seeing sorcerer. Oh...and he is forever bonded with a destructive demon from Hell that he doesn't get along with. At all.
* BlindSeer: Randu's power increases after he's blinded.
* BloodKnight: Etrigan, even when he is acting as a hero on the side of the good guys, never tries to make it a secret that he enjoys fighting and general destruction.
* BreathWeapon: Etrigan can breath hellfire from his mouth, though he can also project it from his hands.
* ByThePowerOfGrayskull: Etrigan's summoning spell.
** Often, especially in adaptations, only the two last lines are used. To change back, he recites "Gone, gone, O Etrigan! Resume once more the form of man!"
** Other versions of the poem have been seen to work. Spoofed at least once by Blood himself, while in a particularly snarky mood:
-->''Gone, oh little man so tame,''\\
''Arise the demon... Whatsisname?''
** In one story, Blood is turned into a fly and is forced to write out the poem in the dust in a desperate hope that could trigger the change: it works.
* ChildMage: Klarion the Witch-Boy is an absurdly powerful little brat who, in his ''first'' appearance: cures a deadly poison, conjures up a feast, banishes a monster with a fork, and summons the Demon to his aid while tied up and suspended from the ceiling.
* CigarChomper: Henry won't let go of a cigar even in a dead faint.
* CombatSadomasochist: Etrigan enjoys receiving pain just as much as giving it. Even as an infant.
--> Etrigan: Blood is drawn! I am impressed--though my hell-spawned powers will heal it! Besides...next to giving pain, my favorite sport's to feel it!
* CreepyChild: Klarion the Witch-Boy
* CreepyGood: Jason Blood. He's got human tongues on display in his basement in one story, and in another ritually bathes in blood.
* CursedWithAwesome: Jason Blood is immortal while he's bound to the Demon, and has influence over Etrigan's behavior. [[DealWithTheDevil The reverse is also true.]]
* DarkIsNotEvil: He may be a demon, but that doesn't make him any less of a good guy. Depending on how he feels at the time, really. Sometimes Etrigan will do good for the sake of good, or need coercing by Jason.
* DemonLordsAndArchDevils:
** Etrigan is one of the higher-ups in Hell. A helpful indicator of his position in the hierarchy is his rhyming.
** His father Belial is also one of the three rulers of Hell.
* DependingOnTheWriter:
** The nature of his relationship to Jason Blood.
** Whether anyone else can force the transformation.
** The quality of his rhymes, or whether he always rhymes or only does so while spellcasting.
** Whether he's evil, apparently, though that may just be ComicBook/JohnByrne.
** Whether Klarion's cat familiar Teekl is a male or female. (Female in Kirby's case, male in Morrison's.)
** The extent of Jason Blood's power as a BadassNormal or a BlackMage.
* EldritchAbomination: A sizable portion of foes.
* EnemyMine: Tends to side with heroes more than villains, but it's usually due to not liking other villains very much.
* EnfanteTerrible:
** Klarion. In his second appearance, he very nearly kills Jason Blood/Etrigan for good.
** A baby Etrigan was this as well, forcing his father to create Merlin.
* EthnicMagician: Randu
* EvilIsPetty: Etrigan often does things ForTheEvulz, and even when he's not working for his own gain, he's likely to annoy people just cause.
* EvilLaugh: A staple of the villains. Etrigan himself has been known to have a few evil chuckles.
* EvilMatriarch: Etrigan's mother is a serpent that Belial was afraid would eat him.
* TheFettered: Etrigan
* ForTheEvulz: Etrigan's usually not interested in personal gain, preferring instead to just cause mayhem for his own amusement.
* GameFace: On the occasions he only half-transforms.
* GeniusBruiser: Etrigan is capable of going toe-to-toe with Superman, Darkseid, and Lobo. He's also one of the most powerful spellcasters in existence, and successfully plotted the overthrow of Hell's hierarchy on at least three occasions, emerging as a KarmaHoudini for orchestrating the Day of Vengeance CrisisCrossover (almost nobody realizes his involvement).
* GoodIsNotNice:
** Jason Blood, especially outside of the Demon's own series. He isn't a villain, but he also doesn't bother often interfering with any disasters that aren't supernatural in nature.
** Even when Etrigan is considered a hero, he's pretty ruthless, resorting to cannibalism or self-mutilation without hesitation.
* GratuitousIambicPentameter: Part of either Etrigan's royalty in Hell, or his spells.
* {{Hell}}: Usually the FireAndBrimstoneHell.
* {{Hellfire}}: Etrigan can breath this from his mouth, or fire it from his hands. It has the effect of burning his target's soul and mind.
* HorrifyingHero: Etrigan is a ''demon'' grafted onto the soul of a knight who betrayed [[KingArthur Camelot.]]
* InstantRunes: WordOfGod says Etrigan's one of the most powerful spellcasters around, with only Myth/{{Merlin}} confirmed his superior. He can perform spells like this if he chooses, though he usually prefers hellfire or physical violence.
* InvoluntaryShapeshifting: His transformation is triggered by ''anyone'' saying the poem. DependingOnTheWriter, sometimes even ''writing'' it does the trick.
* LeastRhymableWord: Etrigan can stretch a rhyme pretty far. WordOfGod says that he does this to annoy other people as much as being forced to rhyme due to spells or his caste in Hell.
* MagicKnight: Jason was a literal knight of Camelot. And he has picked up a lot of useful sorcery over his few thousand years of life. However he is more of a "sit in a mystic circle and chanting" kind of magician.
* NamesToRunAwayFromReallyFast:
** His foe, called Baron von Evilstein (his true name is Von Rakenstein).
** Frequently, Jason Blood himself.
* NobleDemon: Though not particularly noble or magnanimous himself, even when he is doing good, Etrigan is royalty, as his father is one of the three rulers of hell, making Etrigan a prince. At times when he is in the mood, Etrigan himself ''can'' recognise the good qualities of others and lend them his assistance. But it's rare to catch him in this mood.
* OlderThanTheyLook: Haircut aside, Jason Blood looks exactly as he did in King Arthur's time.
* OurDemonsAreDifferent: All over the place. Etrigan's not much different from a HornyDevil, but pretty much every variation appears in Hell.
* PlanetOfHats: Klarion is from Witch-World, a dimension where everyone has at least some skill in wizardry. However, being a child, adults were constantly telling him what he could and couldn't do with his powers and what kinds of sorcery he could and couldn't practice. Coming to our dimension where he was free to do whatever he wanted solved that problem for him.
* ReallyGetsAround: Belial, Etrigan's father has three children, by three different mothers. Though considering he is a very high ranked demon, it's understandable he'd have multiple wives.
* RedHeadedHero: For given qualities of hero.
* RhymesOnADime: Apparently, this is ''required'' among the nobility of Hell. It takes an incredible amount of effort for him to speak ''without'' rhyming his words.
* TheScapegoat: Etrigan's little brother.
* SealedInsideAPersonShapedCan: Played with. Even in stories where Jason Blood and Etrigan both predate their merge, it's not always clear whether Blood is Etrigan's prison or vice versa.
* SkunkStripe: Jason Blood
* SplitPersonality: Sometimes.
* SummonMagic: Klarion the Witch-Boy is capable of summoning Etrigan to his aid in his first appearance.
* SuperStrength: He's been known to be able to trade blows with folks as strong as {{Superman}} and {{Lobo}}.
* TorchesAndPitchforks: Jason Blood's sometimes shown betraying Camelot, and this is the reaction of the locals. Other times, they just notice he's not aging, and take the same response.
* TheTrickster: Frequently, Etrigan's own motivation is his own amusement... such as when he intentionally triggered a war between Heaven, Hell, and Purgatory over [[ComicBook/TheSpectre the vessel of God's divine rage]], just to get more serious (and dull) demons abused when the heroes inevitably won.
* UnusualEyebrows: Jason's are swooped and very, very noticeable.
* UrbanFantasy
* VitriolicBestBuds: Etrigan and SelfDemonstrating/{{Lobo}} are a Type 2 duo, prone to physically pummeling each other as their way of saying "Hi."
* VoluntaryShapeshifting: Toyed with. It's just as often against their will.
* WhereIWasBornAndRazed: Even though it's ''Hell'', Etrigan spent quite a lot of time terrorizing Hell as a child.