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9[[quoteright:330:[[Series/StarTrekTheNextGeneration https://static.tvtropes.org/pmwiki/pub/images/alien_blood_head23.jpg]]]]
10[[caption-width-right:330:[[Theatre/TheMerchantOfVenice If you prick us, do we not ooze?]]]]
11%%
12->''"Well, I see your problem: you're bleeding tang!"''
13-->-- '''Nella''', ''WebVideo/TheNostalgiaChick''
14
15On the outside, they may be HumanAliens, completely indistinguishable from us PunyEarthlings. Or they can be shapeshifters. Or RubberForeheadAliens. Whatever...
16
17What is the best way to quickly establish that a character is not human, sometimes to shock other characters around? Dissection? {{Squick}}. They may have BizarreAlienBiology, but that's usually just an informed characteristic which is rarely appealed to, if ever. Unless it's something very obvious, [[Series/DoctorWho like having two hearts.]] Solution? Make them bleed. If their blood (assuming it ''is'' actually blood and doesn't serve an entirely different purpose in the body) is [[BlackBlood not red]], or nonexistent at all, they might as well have the words "NOT HUMAN" written on their forehead.
18
19The trope, of course, is not limited to HumanAliens, but for other types, it doesn't allow for TheReveal in such an effective way.
20
21In general, aliens and monsters bleed in sickly or unpleasant shades of orange, green, or yellow (blue and violet also happen, but more rarely). PlantPeople often have green blood. Among aliens, green blood is also popular as it can explained fairly simply by having the alien species' blood pigment be copper-based, instead of the red, iron-based hemoglobin of Earth life. Dragons often have boiling or scalding blood.
22
23With HumanAliens, this is a very mild case of ArtisticLicenseBiology: Since the skin is translucent, a creature with different-colored blood wouldn't have the same skin color as a human... if the skin is white. Darker-skinned aliens, or ones with scales, feathers, hair, or something else hiding their skins avert this problem, albeit probably unintentionally.
24
25Of course, here on Earth, all vertebrates (with the exception of [[http://en.wikipedia.org/wiki/Prasinohaema certain lizards]] and [[http://en.wikipedia.org/wiki/Methemoglobinemia genetic conditions]]), the largest and most complex members of the animal kingdom, have red blood thanks to a bright red protein chemical called hemoglobin that contains iron, which is vital for transporting life-sustaining oxygen where it needs to go. There are other pigments like hemocyanin or chlorocurorin that come in such vibrant shades as pink, orange, blue, and green, but [[CoolButInefficient these are much less efficient at transporting oxygen than hemoglobin]] and thus only appear in small invertebrates, which have a better surface-area-to-volume ratio, and thus less need of efficient oxygen transport. In fiction this is usually hand-waved by the alien-blooded being having different chemicals in their blood.
26
27In VideoGames, aliens and monsters often have different colors of blood than red, frequently appearing as optional AdjustableCensorship, to appease the MoralGuardians. [[WhatMeasureIsANonHuman Because it's okay to shoot non-human beings if they don't bleed the same way]].
28
29Not to be confused with BlueBlood or BlackBlood, even if it is, in fact, blue or black. (Though some blue-blooded aliens can, in fact, be {{Blue Blood}}s.) Also not to be confused with a book of same name by Joan D. Vinge.
30
31See also MachineBlood, which is for bleeding machines/robots.
32----
33!!Example subpages:
34
35[[index]]
36* [[AlienBlood/LiveActionFilms Films — Live-Action]]
37* AlienBlood/VideoGames
38[[/index]]
39
40!!Other examples:
41[[foldercontrol]]
42
43[[folder:Anime & Manga]]
44* ''Anime/BlackRockShooter'': The Otherselves bleed their color theme. For example, Black Rock Shooter bleeds blue and Dead Master bleeds green.
45* ''Manga/BlueDrop'': The [[ScaryDogmaticAliens Arume]] have white blood, as do their [[HalfHumanHybrid halfbreed kids]].
46* ''Anime/BlueGender'': The Blue initially have red blood, but the new breed that shows up towards the end of the series bleeds purple.
47* ''Manga/BlueSeed'': The Aragami, being essentially plants, have green blood; this extends to the half-Aragami mutants like Kusanagi, though the latter looks extraordinarily enough not to be mistaken for a normal human. (The color of his blood [[BlackBlood still helps]], considering that he tends to get injured ''a lot''.)
48* ''Anime/BubblegumCrisis'': Most of the Boomers bleed bright orange fluid when damaged, which is unusual for robotic enemies.
49* ''Manga/{{Claymore}}'': The shapeshifting, human-eating ''yoma'' have purple blood. The titular half-yoma warriors have red blood, normally, unless they Awaken, permanently turning into their SuperpoweredEvilSide. From then on, they'll bleed purple.
50* ''Manga/CellsAtWork'': In a weird aversion and a strange case of FurryConfusion, the blood cells are shown having red blood, as well as the various pathogens and bacteria which are often killed by the White Blood Cells with lots of LudicrousGibs. (Though probably justified that the blood is really cytoplasm, the inner fluids of a cell, and the red is just artistic license, though it's still bizarre [[MindScrew to see anthropomorphic blood cells ''bleeding''.]]) In ''Manga/CellsAtWorkCodeBlack'', the White Blood Cells bleed pus. Justified, as it's a symptom of inflammation in the male genitals often caused by STD.
51* ''Manga/CuteyHoney'': Jango the demon Panther from episode 7 has blue blood.
52* ''Anime/DevilManCrybaby'': Most of the demon blood is mustard yellow or dark green.
53* ''Manga/DGrayMan'' both averts and plays it. The human-based machines akumas have red "blood-oil" (that looks exactly like regular blood) but superpowered but humans Noah have their blood turn black under certain circumstances.
54* ''Anime/DigimonAdventure2020'': It's shown that Digimon can bleed glowing blue data when [=WereGarurumon=] picks up a broken piece of a blade during a fight with a Zanbamon. Said Zanbamon gets a pair of head wounds that bleed the same stuff right before [[spoiler:[=CresGarurumon=]]] finishes it off.
55* ''Manga/{{Dorohedoro}}'': Magic-users have black particles mixed in with their blood.
56* ''Franchise/DragonBall'':
57** Originally, Great Demon King Piccolo and his reincarnation had red blood until the early Saiyan Saga, but after their Namekian heritage was revealed, all Namekians from there on have purple blood, including Piccolo himself. ''Dragon Ball Kai'' later re-colored Piccolo's red blood into purple.
58** ''Anime/DragonBallZ'' has a few other instances as well. Most villains bled purple (e.g. Cell and Buu) or magenta (e.g. Freeza), but occasionally you'd see something weirder. For instance, Zarbon (one of Freeza's henchmen) bled dark blue, which was also reflected in his skin color.
59** There was at least one instance of a retconned blood color: Piccolo's blood was red in an early ''DBZ'' episode, censored to light green in the dub. It later became purple and was no longer censored.
60** Freeza's blood color is also retconned. In the series his blood was dark magenta, however in ''Anime/DragonBallZResurrectionF'' it's purple. In the colourized Manga however, its blue.
61** Perfect Cell is shown bleeding either green or purple, changing from one episode to the next.
62** Captain Ginyu has dark blue blood.
63* ''Anime/GenesisClimberMospeada'': The aliens learn to adopt a human appearance; however their blood is green, which leads to TheReveal that [[spoiler: Aisha/[[DubNameChange Marlene]] is actually an Inbit/Invid]].
64* ''Anime/GhostInTheShellStandAloneComplex'': The androids consistently have white blood, a possible reference to the ''Franchise/{{Alien}}'' franchise.
65* ''Anime/{{Karas}}'': The Mikura have flourescent green blood.
66* In the {{Hentai}} anime ''La Blue Girl'', Shikima demons have blue blood; this is also the case of the heroine, Miko Mido (hence the title), since she is {{half|HumanHybrid}}-Shikima.
67* ''Manga/{{Naruto}}'': Tobi bleeds white... ''stuff''. [[spoiler: It's discovered that Tobi is in fact Obito and that the crushed half of his body was augmented and held by Spiral Zetsu, who becomes a part of Tobi. That "white stuff" bleeding out of his right half? That's plant matter, for all intents and purposes. He still bleeds normal blood from his left side, however.]]
68* ''Manga/NegimaMagisterNegiMagi'': Magical constructs built by the Lifemaker such as the Averruncus series have blood that is white or transparent. Given the way they come into being and what happens when they die, it's likely that they are essentially built out of pure magic and are actually bleeding magical energy.
69* ''Anime/NeonGenesisEvangelion'': Subverted. The robots ([[spoiler:well, bio-engineered giant cyborgs encased in PoweredArmor]]) [[HighPressureBlood bleed lots and lots of red]], but played straight with the blood of the second angel, [[spoiler:used as LCL -- the orange liquid that fills the cockpits]]. Also played straight with Unit-02, which bleeds purple HighPressureBlood.
70* ''Anime/RahXephon'': The Mulians are HumanAliens with blue blood.
71* ''Franchise/SailorMoon'':
72** Judging from the scenes where Nephrite is bleeding and dying, the Dark Kingdom Generals from the first season of ''Anime/SailorMoon'' have green blood, even though they have normal human skin tones and the insides of their mouths are pink (as can clearly be seen on any of the numerous occasions when they EvilLaugh).
73** Zoisite, at least, has been shown to have normal red blood (in episode 34 Mamoru injures him with his rose). Nephrite is apparently [[BlackBlood somewhat of a case of censorship]].
74** Kunzite appears to have hot pink blood (in the episode where a Crescent Beam cuts his hands). Perhaps he's a Klingon?
75** In a rather bizarre reversal of this, the aliens Eiru and An from the first arc of the second season have red blood, even though they have green skin and the insides of their mouths are clearly also green.
76* ''Manga/SeiketsuNoHagurama'': The impetus for the war between two groups of people, with one side having red blood and the other with blue blood. The main character and GadgeteerGenius is a blue-blooded prince who discovers to his horror that all his steam-punk looking inventions have been used to eradicate the remaining refugee red bloods by orders of his father and king.
77* ''Manga/SoulEater'': Having black blood is a sign that someone has been [[TheCorruption infected]] with Asura's blood. The blood is not only different in appearance it has also several battle properties.
78* ''Anime/StrainStrategicArmoredInfantry'': The Emilys bleed green.
79* ''Anime/TenchiMuyo'': Zig-zagged. Tenchi is surprised to find that alien princess Ayeka has red blood. Villainous Kagato, on the other hand, bleeds green.
80* ''Anime/TheVisionOfEscaflowne'': The dragon from the first episode bled blue-green blood.
81* ''Anime/{{Witchblade}}'': While not aliens or monsters, transformed wielders bleed clear crystalline blood.
82[[/folder]]
83
84[[folder:Asian Animation]]
85* ''Animation/HappyHeroes'': Shapeshifter's blood is green, while Kalo's blood is blue.
86[[/folder]]
87
88[[folder:Card Games]]
89* ''TabletopGame/MagicTheGathering'': Old Stickfingers, a boogeyman that haunts the forests of Innistrad, has white blood that's compared to liquid moonlight and to mercury in appearance.
90[[/folder]]
91
92[[folder:Comic Books]]
93* ''ComicBook/AlienMarvelComics'':
94** As with the original films, the xenomorphs' blood is HollywoodAcid, weaponised for BloodyMurder and capable of almost instantly dissolving metal and humans.
95** ''Aliens: Aftermath'', [[spoiler:a new variant of the usual HollywoodAcid blood appears. The pale xenomorph that stalks the Renegade XM team on the frozen, radioactive world of LV-426 has acidic blood that eats through clothing and objects as usual, then [[KillItWithIce instantly freezes]] any flesh it reaches -- which is swiftly followed by the frozen body parts [[LiterallyShatteredLives shattering]]]].
96* ''ComicBook/{{Animorphs}}'': In the graphic novels, the centipede-like Taxxons have blood that looks like blue foam.
97* ''ComicBook/{{Copperhead}}'': The Sewell family, in addition to having a single eye and two extra arms, bleed gouts of green when injured.
98* ''ComicBook/{{Gea}}'': Extradimensional beings live on the Earth and are the basis of every myth or religion. They try to live undercover, enforced by the Guardians ("Baluardi" in the original) such as the main character. Even when outsiders are outwardly identical to humans (not so common), expect them to be killed in a gore splash of weird blood and alien organs. In one particular case, a team of racist vigilantes kills a group of "outsiders" living in a slum, and are horrified to see that they bleed yellow, smelly liquids. The leader opts for a "foreign disease" and orders the bodies to be burnt.
99* ''ComicBook/{{Hellboy}}'': One character has yellow blood because his body contains the [[SealedEvilInACan soul of a worm-like demon]].
100* ''ComicBook/{{Horizon}}'': The natives of the planet Valius have blue blood.
101* ''ComicBook/TheIncredibleHulk'': The Hulk very often bleeds a ''dark'' green. The Red Hulk has glowing yellow blood.
102* ''Film/JurassicPark1993'': In the comic adaptation, when the ''Tyrannosaurus'' kills the two ''Velociraptor'', their blood is colored green for some reason, despite it being red in the films.
103* ''ComicBook/{{Lanfeust}}'': In ''Lanfeust of the Stars'', due to InconsistentColoring, goules are shown to have blue and black blood on top of red blood. Pathacelces have consistently black blood.
104* ''ComicBook/Nova2007'': Given a nod on Rich's first visit to Knowhere, when he finds something written on the wall and asks Worldmind if it's blood. It says no, and Rich then asks if it's alien blood. Which it is, so Rich points out alien blood is still blood.
105* ''ComicBook/PaperinikNewAdventures'': Xerbians have black-ink blood, as shown in a flashback. If this still applies to Xadhoom, who became a PhysicalGod and an {{Energy Being|s}}, is up to debate.
106* ''ComicBook/SinCity'': Even though he's not an alien, That Yellow Bastard had yellow blood, since he's incapable of processing bodily waste, which means his yellow blood is... [[{{squick}} exactly what it looks like]] due to RuleOfCool.
107* ''ComicBook/ResidentAlien'': Harry Vanderspeigle, an alien masquerading as a human, bleeds pink blood.
108* ''ComicBook/StarTrekEarlyVoyages'': In "The Fallen, Part Two", it can be seen that the Chakuun have blue blood.
109* ''Franchise/StarWarsLegends'': ''Jabba the Hutt: Betrayal'' shows a half-dozen or so RubberForeheadAliens who work for Jabba trying to capture their master for [[TheStarscream Bib Fortuna]] but getting attacked by [[ZergRush a horde of ravenous weasel-like creatures who kill and eat everything they see]] -- along with Jabba and Bib themselves and four of Jabba's Gamorrean guards. Everyone but Jabba and Bib dies horribly before the creatures can be slaughtered; and the reader has some fun seeing how many different colors of blood ''all'' the species shed before the carnage is over.
110* ''ComicBook/{{Superman}}'':
111** Coluans like Brainiac are supposed to have green blood but it's not uncommon for colorists to forget it and color it red anyway.
112** ''ComicBook/SupermanSupergirlMaelstrom'', In the beginning of the second chapter, both Superman and Supergirl fight two alien monsters who bleed green.
113* ''Franchise/{{Transformers}}'': You will get familiar with the bright pink energon that passes for Cybertronian blood reading any of the comic books written (or co-written) by James Roberts (''ComicBook/TheTransformersMoreThanMeetsTheEye'', ''ComicBook/TheTransformersDarkCybertron'', special mention going to ''ComicBook/TheTransformersLastStandOfTheWreckers''). There are two exceptions, however: Tailgate's innermost energon is green [[spoiler:because he's suffering from cybercrosis, and his innermost energon has curdled]], and Brainstorm has a more reddish-orange colour [[spoiler:because he's been infected with the Dead Universe]].
114* ''ComicBook/TheUmbrellaAcademy'': Following [[spoiler:Vanya's transformation into the White Violin]], she has grey blood.
115* ''ComicBook/WeKillMonsters'': The monster Andrew kills to save Jake has blue blood. The [[BigCreepyCrawlies giant insect monster]] has green blood.
116* ''ComicBook/WonderWoman1987'': Medusa's blood is blue.
117* ''ComicBook/XMen'': The XenomorphXerox species Brood have green blood, though thankfully without any acidic properties.
118[[/folder]]
119
120[[folder:Fan Works]]
121[[AC:''WesternAnimation/TheBlackCauldron'']]
122* ''Fanfic/HopeForTheHeartless'': The [[OurLichesAreDifferent Horned King]] is shown to have in the place of blood thick and blackish substance that is called blood only because of the lack of a better term.
123
124[[AC:''Franchise/CompilationOfFinalFantasyVII'']]
125* ''Fanfic/SeventhEndmostVision'': Dr. Lucrecia's blood has flecks that look like white gold in it. [[spoiler: It's probably because she's turned herself into a Tsiviet through self-experimentation.]]
126
127[[AC:Crossovers]]
128* ''Fanfic/BoopTheSnootForCriticalDamage'': Bandits are no longer human due to the Grimm masks forced on them, and bleed a black, oil-like substance that smells of rot and decay.
129* ''Fanfic/GuardiansWizardsAndKungFuFighters'':
130** Lurden blood is noted to be thicker and a darker shade of red than that of humans.
131** [[HellHound Sniffer's]] blood is a sickly green.
132* ''Fanfic/TheLastDaughter'': It turns out that [[Literature/{{Worm}} Taylor]], who is a Kryptonian in the story, has bright pink blood.
133* ''Fanfic/MyLittlePonyNakamaIsMagic'': When the [[Manga/OnePiece Straw Hats]] manage to finally actually wound him, [[WesternAnimation/MyLittlePonyFriendshipIsMagic Discord]] spits up green blood.
134* ''Fanfic/TheNightUnfurls'':
135** {{Inverted}} for [[spoiler:the Hunter. He is no longer human due to the EldritchTransformation that happened prior to the events of the story, yet he bleeds the same way a human would (i.e., bleeding red blood). Fittingly, he values his humanity and desires to conceal his true nature.]]
136** In order to drive home that [[spoiler:Shamuhaza has gone OneWingedAngel during the climactic battle between him and the Hunters, he is shown to bleed white ichor when damaged]].
137* ''Fanfic/OneHellOfAnAfternoon'': Taylor's blood is green and glowing now, like the vat she got dumped into, which concerns her a bit.
138* ''Fanfic/ProtocultureEffect'': [[spoiler: Shepard]] is revealed to have green blood when he gets injured. [[spoiler: He explains that this is because he's a [[HalfHumanHybrid quarter-]][[HeelFaceTurn Invid]].]]
139* ''Fanfic/RoyalHeights'': As a Utopian Android [[spoiler:the Headmaster]] is revealed to have a metallic silver fluid for blood after [[spoiler: Yuck kills her by slicing her open with his sword.]]
140* ''Fanfic/{{Theogony}}'': When Taylor is shot and wounded by Shadow Stalker's phasing bolt, she notices that her blood is black when she touches her wound and sees "black ichor" on her fingers.
141
142[[AC:''Franchise/TheDCU'']]
143* ''Fanfic/AllTheRoofsOfUncertainty'': The aliens attacking the Earth bleed green.
144
145[[AC:''WesternAnimation/GravityFalls'']]
146* ''Fanfic/TranscendenceAU'': Demons have different blood colors. After his transformation, Dipper bleeds gold.
147
148[[AC:''WebAnimation/HelluvaBoss'']]
149* ''Fanfic/ShadowsOverHell'': [[spoiler:The King's green ikor-like blood is acidic and burns the flesh, as Moxxie learns the hard way.]]
150
151[[AC:''WesternAnimation/InvaderZim'']]
152* ''Fanfic/BecomingATrueInvader'': Fefians have blue goo for blood, [[BizarreAlienBiology which has different attributes depending on which part of their bodies it comes from]], ranging from burning like acid to causing paralysis.
153* ''Fanfic/TheNewAdventuresOfInvaderZim'':
154** Irkens are shown to have dark green blood. Which is apparently not edible to vampires, incidentally.
155** [[OurVampiresAreDifferent Norlock]] has a black ichor in place of blood.
156* ''Fanfic/TheSmeetSeries'': Irkens have pink blood, and Sobrekt violet.
157* ''Fanfic/TheVioletDemon'': Fornaxians have pale pink blood.
158* ''Fanfic/ZimTheWarlordIrkenReversion'': Irken blood is pink. When Zim tastes some at one point (ItMakesSenseInContext), he notes that, unlike human blood, it tastes sweet rather than metallic. Also, it turns loose and greasy as it coagulates, instead of thickening.
159
160[[AC:''VideoGame/TheLegendOfSpyro'']]
161* ''Webcomic/PureLight'': The dark dragons have yellow blood.
162
163[[AC:''Franchise/TheLegendOfZelda'']]
164* ''Fanfic/TheirBond'': Subverted. After finding [[spoiler:Zelda bleeding out from a suicide attempt]], Impa makes a split decision to take her to the Twili Realm for help. She tells herself that she's lucky the Twili share the same blood as the Hylia, or else the blood transplant would have failed.
165
166[[AC:''VideoGame/{{Minecraft}}'']]
167* ''WebAnimation/MinecraftEndventures'': Enderman blood is purple in episodes 11 and 12. Before then, they have no blood.
168
169[[AC:''Franchise/{{Monsterverse}}'']]
170* ''Fanfic/AbraxasHrodvitnon'': [[Characters/AbraxasHrodvitnon Monster X]] has the same black blood as Ghidorah, as does the Many "patchwork body" of [[spoiler:Ni/Elder Brother]].
171
172[[AC:''WesternAnimation/MyLittlePonyFriendshipIsMagic'']]
173* ''Fanfic/ActuallyImDead'': After dying and subsequently being brought back by the [[ArtifactOfDoom Alicorn Amulet]], Trixie's blood appears to have turned black. [[spoiler: It is later revealed that concentrated ''dark magic'' has replaced her bodily fluids.]]
174* ''Fanfic/DiariesOfAMadman'': Changeling blood is always green, no matter what species they're currently posing as. The protagonist of the story, Navarone, also gains this after his EmergencyTransformation, going from regular human blood to a more viscous amber blood.
175* ''Fanfic/EquestriaAcrossTheMultiverse'': Celestial Ponies, alien ponies from the planet Stellaria, have glowing pink blood. Black Star, a Stellarian supervillain, has black blood due to being mutated by her Void Prism. Celestial/Equusian Pony hybrids like Brightglow and her sisters have a lighter red blood than normal ponies that glows like the Celestials' does.
176* ''Fanfic/MyFlutteringHeart'': Discussed. Shining always imagined that Chrysalis bled an abnormal green, but it turns out she bleeds red like a normal pony. Shining finds it unnerving since it makes it harder to dehumanize her.
177* ''Fanfic/MyBravePonyStarfleetMagic'': [[BigGood Grand Ruler Celesto]], a deity alicorn, has a blood type that [[EverythingsBetterWithSparkles sparkles]].
178* ''Fanfic/OversaturatedWorld'': The alien Vaucoi bleed orange.
179* ''Fanfic/PrincipalCelestiaHuntsTheUndead'': Changelings have green blood, so Sunset differentiates the Equestrian Chrysalis from the human one by shooting her in the shoulder. She gets the human one, who complains that Sunset could have just pricked her finger.
180
181[[AC:''WebAnimation/{{RWBY}}'']]
182* ''Fanfic/WhiteSheepRWBY'': Jaune's Grimm form has black blood, from which he can [[FertileBlood spawn obedient Grimm]].
183
184[[AC:''Franchise/SonicTheHedgehog'']]
185* ''Fanfic/PrisonIslandBreak'': Shadow Robotnik is repeatedly mentioned as having black blood while everybody else clearly has red blood, because he is canonically part alien.
186
187[[AC:''Franchise/{{Splatoon}}'']]
188* ''Fanfic/FirstAidKitsAndDeepSecrets'': The characters bleed blue. This is because they're evolved from squids and octopuses.
189* ''Fanfic/IveGotYourBack'': As is implied in ''VideoGame/Splatoon2'', Inklings and Octolings have ink running through their veins instead of blood. The ink presumably matches a character's coloring, as Marina's ink is teal.
190* ''Fanfic/TheWisdomOfLeeSquidly'': Lee's blood, like that of real-life cephalopods, is blue.
191
192[[AC:''Literature/{{Worm}}'']]
193* ''Fanfic/TheTasteOfPeaches'': As a goddess, Taylor has golden ichor in place of blood. [[spoiler:When Panacea has a power reaction trying to read her, Victoria ends up getting blood with an odd golden tinge as well.]]
194[[/folder]]
195
196[[folder:Films -- Animation]]
197* ''Anime/Cyborg0091966'': When 009 the cyborg is being operated on, his blood is shown to be dark green.
198* ''WesternAnimation/HeavyMetal'': The mutants in the Taarna segment have green blood, as a side effect of being tainted by the Loc Nar's power.
199* ''WesternAnimation/{{Hercules}}'': The Hydra's blood is green slime.
200* ''Anime/Interstella5555'': Shep's blood is yellow.
201* ''WesternAnimation/LiloAndStitch'': Stitch's blood is pink, as seen when Gantu extracts some to put into some gun turrets so they will lock onto his every move if he tries to escape.
202* ''WesternAnimation/TheNightmareBeforeChristmas'': Though not seen directly, the song "Kidnap the Sandy Claws" mentions being "beaten black and green", suggesting this is the case. Elsewhere in the film, a scorpion bleeds green blood, which is shown.
203* ''WesternAnimation/PussInBoots2011'': In the flashback where Puss and Humpty become [[SwornBrothers blood brothers]], Humpty bleeds yolk instead of blood.
204* ''Animation/TheReturnOfHanuman'': Rahu and Ketu (who are definitely not human)'s blood is green.
205* ''WesternAnimation/TheSeaBeast'': In the fight against the brickleback at the start of the film, its severed tentacles bleed inky-black blood.
206[[/folder]]
207
208[[folder:Literature]]
209* ''Literature/{{Animorphs}}'': Andalite blood is blue-black. Elfangor and Arbron are [[{{Squick}} squicked out]] when they find that humans have red blood. Hork-Bajir bleed dark blue-green, and Taxxons have a sickly yellow.
210* ''And The Devil Will Drag You Under'' by L. Sprague deCamp had a race of alien demons with blue blood. "Not dark blue, but a nice, pretty sky blue."
211* ''Literature/BlackDaggerBrotherhood'': [[spoiler:''Sympaths'']] bleed blue.
212* ''Literature/TheCampHalfBloodSeries'':
213** It's frequently noted that gods and similar beings bleed golden ichor, as in mythology.
214** Juniper, a [[OurNymphsAreDifferent dryad]], apparently has chlorophyll instead of blood, as her blushes or bloodshot eyes are green.
215* ''[[Literature/TheShipWho The City Who Fought]]'': The Kolnari are a HumanSubspecies with a heavily altered physiology that incorporates a lot more heavy metals than baseline humans. Their blood is orange.
216* ''Franchise/ConanTheBarbarian'': In "Literature/RoguesInTheHouse", Conan professes to believe that Nabonidus has black blood when offering to cut his throat and see what color it is.
217* ''Literature/TheDaevabadTrilogy'': Full-blooded [[OurGeniesAreDifferent daeva]] have distinctive black blood. In one infamous [[HalfBreedDiscrimination pogrom against human-daeva hybrids]], an entire town's population was [[ATasteOfTheLash scourged]] to root out everyone who bled red.
218* ''Literature/{{Discworld}}'':
219** Discworld elves have green blood -- just like some other famous fictional beings with pointy ears. The explanation is that they have copper-based blood, since elves are [[ColdIron allergic to iron]].
220** Trolls have... ooze. We're not told what colour it is, but, given that they're SiliconBasedLife, grey-to-brown seems likely.
221* ''Franchise/DoctorWhoExpandedUniverse'': The Venusians in the novel ''Venusian Lullaby'' have blue blood.
222* ''Literature/TheDoorwayAndTheDeep'': It's shown in this book that the Wisps of the world of Limn have white blood. Also, coming into contact with Wisp blood can put people into a deep sleep.
223* ''Literature/{{Dragonback}}'': The K'da have black blood, which shows through their scales when they go into battle mode, making them look even more intimidating.
224* ''Literature/DragonridersOfPern'': The dragons have green, copper-based blood.
225* ''Literature/TheDresdenFiles'': White Court vampires have blood that is slightly, yet noticeably, paler than that of normal humans. In fact, this trope is so common among the Dresdenverse's [[FantasyKitchenSink many, many kinds of monsters]] that by the later books, "Bleed for me" has become the standard test for a mortal trying to decide [[MustBeInvited whether to invite a stranger]] into their home.
226* ''Literature/FortunesOfWar'': ''Dreadnought!'' features two instances.
227** A pointed reference to Vulcans having green blood is made when Piper describes Sarda blushing in shame ("going olive", as she describes it) at the commendation ceremony for his research.
228** Piper learns the hard way that Merete and others of her species have lavender blood. She uses the stains on her uniform to galvanize her anger toward the book's villain, whose attacks on their ship led to Merete's injuries.
229* ''Literature/GoblinsInTheCastle'': Implied -- when Herky gets his tail caught in a rock and has to have it pried loose, it's oozing something green where the skin is torn. On seeing it, William wonders if it's goblin blood.
230* ''Literature/GreatShip'': [[SocietyOfImmortals Humanity]] have very dark red, almost black blood due to the huge amount of genetic engineering and extra bits of DNA and cells in their bloodstream. The Remoras, twisted by radiation and their own tailored viruses, often have odd blood -- one of the characters, Orleans, has very thick black blood.
231* ''Literature/GodClads'': A ghouls Blood is a Bloodborne plague that can infect others to become ghouls themselves if exposed to enough brain and body matter and can do self healing - even if doing it fast does have the risk of tumors.
232* Elves in Creator/SimonRGreen's various urban fantasy novels have golden blood. So does Ishmael Jones, an alien in human guise.
233* ''Franchise/HarryPotter'':
234** Unicorns in this universe have mercury-like silver blood, which is powerfully magical and will heal but {{curse}} you if you drink it.
235** Dragon blood is either green or red, depending on the source. Of course, there are different breeds...
236* ''Literature/{{Helliconia}}'': The blood of Helliconia's native fauna, including the sapient phagors, is golden.
237* ''Literature/HerCrownOfFire'': After absorbing Lydia Greatcast's blood to become the new Queen, Rose's blood turns a bright, luminous, white.
238* "Literature/{{Hostess}}", by Creator/IsaacAsimov: The aliens from Hawkin's Planet are yellow-coloured, six-legged space cows. Their blood is clear, and Dr Asimov goes into detail, explaining how the lack of metal in their bloodstream makes it colourless.
239* ''Literature/InCryptid'': Johrlac have clear blood that has natural healing properties when applied to human wounds.
240* ''Literature/InheritanceCycle'': Lethrblaka blood is bluish-green, like aged copper.
241* In Creator/ALeeMartinez's ''In The Company Of Ogres'', the Red Woman is an ancient sorceress whose clothes, shoes, staff, hair, skin, and eyes are all various shades of red. In ironic contrast, her blood is pure milky white.
242* ''Literature/JacobsLadderTrilogy'': The {{Transhuman}} Exalts have blue or purple blood due to the nanomachine colonies in their bodies. This is noted to affect their skin and eye color as well, particularly Tristen Conn, whose albino.
243* [[TechnicallyLivingZombie Feral]] and [[UpliftedAnimal cured]] humans in ''Literature/JanitorsOfThePostapocalypse'' have thick black blood. Cured humans in the second book, getting to meet the small population of immune humans, find the warm undertones in their skin unnatural-looking, and their blood weirdly pretty and alarmingly splashy.
244* ''Literature/JunctionPoint'': The ktrit'zal have neon-orange blood that smells faintly of lilac, while the tianlong have sky-blue blood.
245* ''Literature/KeysToTheKingdom'': Denizens of the House have blue blood, and some of them, [[spoiler:including Arthur due to TheCorruption,]] have golden blood.
246* ''Literature/KnightsOfDoom'': Lord Belgaroth, the Dread Serpent bleeds green ooze in place of blood, having sold his soul into becoming a powerful demon.
247* When the rulers spill their blood in ''Literature/TheLightlarkSaga'', it carries a magical effect that reflects their powers. Oro's blood [[PlayingWithFire burns]], Celeste's blood gives off [[LightEmUp sparks]], Azul's blood [[BlowYouAway floats]], Cleo's blood [[AnIcePerson freezes]] and Grim's blood [[CastingAShadow turns black]]. As a Wildling ruler, Isla's blood is supposed to cause [[GreenThumb a flower to bloom]] when split, but as she lacks powers she has to fake this effect during a public demonstration.
248* ''Literature/TheLordOfTheRings'': The Orcs and Trolls have black blood.
249* ''Literature/TheMachineriesOfEmpire'': [[spoiler:The clone of [[FourStarBadass Jedao]]]] gets a TomatoInTheMirror realization when he gets shot and suffers [[HealingFactor no worse effect]] than a trickle of thick black blood. His body turns out to be [[spoiler:a genetic engineered voidmoth, the same species that form the chassis for the Hexarchate's {{Living Ship}}s]].
250* ''Literature/TheMalloreon'': Dragons have boiling blood.
251* ''Literature/{{Mindwarp}}'': The protagonists all discover superpowers on their thirteenth birthday, and their blood turns silver, the first real sign that they're not 100% traditionally human.
252* ''Monster Girl Tower'': Elves bleed sap, just as a plant would.
253* ''Literature/MythAdventures'': It took nineteen books [[spoiler: and a bad-luck-induced paper cut]] to find out that Aahz has yellow-green blood.
254* ''Literature/NemesisSaga'': Most of the {{Kaiju}} bleed brown blood. Nemesis, on the other hand, bleeds red blood like a human.
255* ''Literature/{{Neverwhere}}'': Mr. Croup and Mr. Vandemar don't even bleed when wounded -- just another sign of their inhuman nature.
256* ''Literature/TheNumberOfTheBeast'': The main characters discover the "ranger" hassling them isn't human when they discover that "he" has blue-green blood.
257* ''Literature/OldMansWar'': CDF soldiers have their blood replaced with [=SmartBlood=], a gray nanotech fluid that carries 4x the oxygen that human blood can and which can instantly seal wounds and even be commanded to ignite remotely in case something drinks your blood (or if you [[EyeScream spit some of it in an attacker's eyes]]).
258* ''Literature/ParadiseLost'': The angels and demons all have golden blood that looks like ambrosia to highlight their [[GoldAndWhiteAreDivine god-like power]].
259* ''Literature/ThePrideOfParahumans'': Parahuman blood is so thick with hemoglobin that it looks black. As does their muscle tissue.
260* ''Literature/RedQueen'': Silvers have [[ExactlyWhatItSaysOnTheTin silver blood]], which gives them a certain superpower. However, superpowers are not restricted to silver-blooded people, as Reds like Mare can and do have them. [[spoiler:According to ''Broken Throne'', the silver blood is the result of nuclear radiation altering the genes of Silvers.]]
261* ''Literature/RelicMaster'': The Sekoi bleed amber, to further emphasize their alien nature.
262* ''Literature/TheSalvationWar'': The demons have yellow, green, and acid blood. [[spoiler: Not an instance of the RuleOfCool, however. They've been evolving in a ''very'' different environment for the past 5 million years. Quite possibly the colors have something to do with the environment...]] the angels in the sequel have silver or white blood. For both species, blood color was observed to function like blood groups in humans for purposes of transfusions.
263* ''Franchise/TheShadowhunterChronicles'':
264** Vampires still have red blood, but that red is much lighter than human blood.
265** All demons have black blood. It is also often slightly toxic if someone accidentally drinks it or if it gets into an open wound.
266** Angels basically have golden and shining blood.
267** Emma Carstairs once killed a [[TheFairFolk fairy]] in battle who had green blood. However, it is not known whether all fairies have green blood or only a few have green blood.
268* ''Literature/ASongOfIceAndFire'': Drogon, the largest of Daenerys Targaryen's dragons, bleeds black blood. Her other dragon Viserion bleeds reddish gold blood.
269* ''Literature/{{Stardoc}}'': Jorenians have green blood. [[BizarreAlienBiology And a few other odd anatomical traits]].
270* ''Franchise/StarWarsLegends'':
271** ''Literature/NewJediOrder'': The [[ScaryDogmaticAliens Yuuzhan Vong]] have blood that is a shade of blue so dark it's almost black.
272** Averted by the Chiss (Grand Admiral Thrawn's species), who, despite their periwinkle-blue skin and glowing red eyes, bleed ordinary red blood. This is because the Chiss are actually long-lost human colonists from the pre-hyperdrive era who mutated as a result of the chemicals in the atmosphere of their adopted home planet of Csilla.
273* ''Literature/NowhereStars'': [[MagicalGirl Keepers']] bodies tend to get... ''weird'' as they get more powerful. Case in point, [[spoiler: Liadain]] has her blood replaced with ''crow feathers''. This has absolutely no impact on her health.
274* ''Literature/TheStormlightArchive'': The Parshendi have orange blood, and chasmfiends have purple blood, both of which are described as having a moldy smell. This similarity of the various lifeforms on Roshar hints that [[spoiler:Humans aren't actually native to the planet.]]
275* ''Literature/AStudyInEmerald'': The central crime scene is splashed with green blood, since in this universe all those of noble blood are [[HalfHumanHybrid descended from Lovecraftian Elder Gods]].
276* ''Literature/{{Temeraire}}'': Dragon blood is a red so dark it's almost black, which makes it quite easy to tell after a battle whether an Aerial Corps DragonRider is injured or it's NotHisBlood.
277* ''Literature/UkiahOregon'': Ontongard/Pack blood will coalesce into mice, insects, or other small animals and flee. The original owner, or another member of the same species, can later reabsorb the animal, [[TransferableMemory gaining memories]] stored therein.
278* ''Literature/TheWarOfTheWorlds1898'': The Martians are a strange case in that they ''have no blood''. And no digestive system. They obtain oxygen and nutrients by removing blood from other species and injecting into their own bodies.
279* ''Literature/WingsOfFire'': The [[AnIcePerson IceWing]] dragons bleed blue blood, unlike the other red-blooded dragons.
280[[/folder]]
281
282[[folder:Live-Action TV]]
283* ''Series/The100'': "Nightblood" -- pitch-black blood, revealed to be genetically engineered to withstand high levels of radiation -- is used to identify potential leaders of the Grounders.
284* ''Series/{{ALF}}'': In "Someone to Watch Over Me", Alf mentions that he has green blood.
285-->'''TV Reporter:''' This quiet suburban home ''[referring to the Tanners]'' is about to run red with blood.\
286'''ALF:''' ''[gasps]'' Oh, wait, why am I worried? [[ComicallyMissingThePoint My blood is green]].
287* ''Series/AlienNation'': Newcomers are revealed as having pinkish blood.
288* ''Series/{{Andromeda}}'': Doyle, an android, "bleeds" superconductor fluid when cut. Due to her in-built WeirdnessCensor, ''she'' sees it as ordinary blood, thinking herself human.
289* ''Series/BabylonFive:'' The Drazi have white blood. On the other hand, the other major races -- the Minbari, the Centauri, and the Narns -- have red blood.
290* ''Series/{{Brimstone}}'': This happened a couple of times, where someone Stone suspected of being one of the 113, was revealed to be human because they bled.
291* ''Series/BuffyTheVampireSlayer'': In "[[Recap/BuffyTheVampireSlayerS3E18Earshot Earshot]]", a mouthless demon's fluorescent blood splashes onto Buffy's hand and gives her an "aspect of the demon", which turns out to be hearing people's thoughts. Similarly, in the ''Series/{{Angel}}'' episode "[[Recap/AngelS01E08IWillRememberYou I Will Remember You]]", the title character is "infected" with demonic blood that cures him of his vampirism. It's bright neon green.
292* ''Series/ConanTheAdventurer'': Yag-Kosha has green blood.
293* ''Series/{{CSI}}'': In "[[Recap/CSIS8E15TheTheoryofEverything The Theory of Everything]]", several [[VictimOfTheWeek victims]] with green blood turn up. [[spoiler:It's eventually revealed that this is the result of said victims having massive overdoses of a sulfur-containing medication against migraines in their bodies.]]
294* ''Series/TheDarkCrystalAgeOfResistance'': When Mayrin, leader of all Gelfling Clans, is struck down by the Skeksis General, she bleeds pink blood.
295* ''Series/{{Defiance}}'': Castithans have pink blood, which looks like a strawberry milkshake, while Indogenes have silver blood.
296* ''Series/DoctorWho'':
297** In [[Recap/DoctorWhoS5E1TheTombOfTheCybermen "The Tomb of the Cybermen"]], Cyberman blood is white.
298** The Daleks, as well as Davros himself, all have green blood. It can then be assumed that the rest of the Kaleds, before their mutation, also had green blood as well -- although the Tenth Doctor remarks in dialogue that Kaled blood is the same as human blood but a little purpler.
299** Time Lord blood has been subject to {{Retcon}}s:
300*** In "[[Recap/DoctorWhoS18E4StateOfDecay State of Decay]]", the Doctor's blood is blue. In every other episode of the series where he (or other Time Lords) bleed, it's red. Reportedly, Fourth Doctor Creator/TomBaker insisted on his blood being blue in that story for reasons known only to himself.
301*** The ExpandedUniverse goes with the idea that Time Lord blood is just a little bit brighter or oranger than human blood. It's sometimes described as basically red, but "orange-ish". (This was partially an attempt to explain away the slightly too bright fake blood used by the BBC's special effects department in the 1970s.)
302*** In [[Recap/DoctorWhoTVMTheTVMovie the movie]] it's red, but is different enough from human blood on a cellular level that Grace describes it as "not blood" when she looks at it under a microscope.
303** Strangely, a scene from [[Recap/DoctorWhoS21E1WarriorsOfTheDeep "Warriors of the Deep"]], Episode 4, indicates that the Sea Devils have green blood. This is odd because this particular species is not alien, but rather a race of intelligent Earth reptiles. [[WildMassGuessing Perhaps their case is]] similar to [[RealityIsUnrealistic the real life green-blooded skink]] (''Prasinohaema virens'')?
304** The Sontarans have green blood, as seen in [[Recap/DoctorWhoS22E4TheTwoDoctors "The Two Doctors"]] and [[Recap/TheSarahJaneAdventuresS2E1E2TheLastSontaran "The Last Sontaran"]].
305** In [[Recap/DoctorWhoS30E3PlanetOfTheOod "Planet of the Ood"]], Ood blood is shown to be purple.
306** In ''Series/TheSarahJaneAdventures'' episode [[Recap/TheSarahJaneAdventuresS3E1E2PrisonerOfTheJudoon "Prisoner of the Judoon"]], the Judoon have yellow blood.
307** The shapeshifting Nostrovites from the ''Series/{{Torchwood}}'' episode [[Recap/TorchwoodS2E9SomethingBorrowed "Something Borrowed"]] are known to have black blood.
308** Mr. Sweet from [[Recap/DoctorWhoS33E11TheCrimsonHorror "The Crimson Horror"]] has green blood.
309* ''Series/FallingSkies'':
310** Averted with the Skitters, they bleed red as any human (which we get to see on several occasions when [[YourHeadAsplode their heads blow up real good.]])
311** The Espheni on the other hand have blue blood.
312** The Volm bleed dark purple.
313* ''Series/{{Farscape}}'':
314** Luxans have clear blood which turns to [[BlackBlood black]] when they get hurt. Black blood is toxic, thus the bleeding has to be [[PercussiveMaintenance stimulated]] until it turns clear again. Nebari have dark blue blood. Delvians, being [[PlantAliens humanoid, sapient plants]], bleed a sap-like substance.
315** The Nebari have blue blood.
316** Pilots have purple blood, but for some reason have red scar tissue.
317* ''Series/TheGifted2017'':
318** Marcos "bleeds" sunlight. It's later clarified that he has blood just like anyone else, but his powers charge his cells with energy that has to dissipate before it looks like normal blood.
319** Glow has light-infused blood like Marcos, though not quite as powerful.
320* ''Series/{{Humans}}'': Synths have a blue fluid that looks like blood flowing through them.
321* ''Series/KaizokuSentaiGokaiger'': Basco ta Jolokia is shown to have light bluish-green blood [[spoiler:when he dies]].
322* ''Series/KamenRiderBlade'' has the [[MonsterOfTheWeek Undead]], who bleed green. This serves as a ChekhovsGun as [[spoiler: one of the main characters is an Undead himself and another main character becomes an Undead in the finale, and they both bled this color]]. The gun goes off ''cross-series'', as in ''Series/KamenRiderDecade'', [[spoiler: the BigBad of Ryuki's world turns out to be an Undead]]. This gets carried over in ''Series/KamenRiderZiO'', [[spoiler:where both aforementioned main characters get their Undead powers stolen, and their blood immediately turns red to signify that they've become human again]].
323* ''Series/KamenRiderZiO'' has one of the most bizarre examples in fiction with Woz, whose blood appears to consist of sheets of paper.
324* ''Series/TheLordOfTheRingsTheRingsOfPower'': All the orcs have black blood. Notably, so does Adar, showing that he's also closer to an orc than an Elf, in spite of external appearances.[[note]]Considering Adar is a first-generation orc, it's more than likely that the orcs' appearance got more corrupted over generations of breeding.
325* ''Series/TheOuterLimits1995'':
326** "[[Recap/TheOuterLimits1995S1E16TheVoyageHome The Voyage Home]]": The alien's blood is green and slimy.
327** "[[Recap/TheOuterLimits1995S4E21PromisedLand Promised Land]]": The Tsal-Khan's blood is black.
328** "[[Recap/TheOuterLimits1995S5E4TheGrell The Grell]]": The titular race's blood can alter DNA, meaning that a human who is exposed to it will turn into a Grell.
329** "[[Recap/TheOuterLimits1995S6E4MainfestDestiny Manifest Destiny]]": The Trion have yellow-green blood. Given that it is rich in copper, it is highly conductive of electricity.
330** "[[Recap/TheOuterLimits1995S7E3ANewLife A New Life]]": Father's species has bright green blood.
331* ''Series/TheOutpost'': Talon's blood is as black as ink. It's why her people are known as "Blackbloods". [[spoiler: The Masters also have black blood. It turns out that Blackbloods descended from a HalfHumanHybrid fathered by one of them.]]
332* ''Franchise/PowerRangers'': A reversal occurs when a villain's human nature is revealed when he does bleed human blood. There was also something of a straight example with Lipsyncher, who "bled" lipstick when her cheek was scarred by Jason's sword.
333* ''Series/{{Roswell}}'': The alien teenagers have both blood and saliva that looks normal to the naked eye, but not under a microscope.
334* ''Series/{{Smallville}}'': While the {{Human Alien|s}} Clark Kent bleeds red blood on the few occasions he's hurt enough to bleed, the cyborg human Victor Stone bleeds black fluids, keeping in line with [[ComicBook/TeenTitans the comics]]. This does not carry over to the ''WesternAnimation/TeenTitans2003'' cartoon, in which it appears to be clear.
335* ''Series/StargateSG1'':
336** An episode has the team realize something is amiss when an attempt to draw blood from [[spoiler:O'Neill]] yields silvery-white fluid instead.
337** Goa'uld have blue blood.
338** In another episode the first indication that a bounty hunter isn't human is that his blood is green.
339* ''Franchise/StarTrek'':
340** Vulcans have green copper-based blood, not unlike Earth insects.[[note]]In reality, Haemocyanin (the oxygen-carrying pigment that is the copper-blood equivalent of iron-based haemoglobin) does not carry oxygen very efficiently, which is why molluscs like squids and octopi tend to operate on a 'dart and rest' principle.[[/note]] To a limited extent, ''Franchise/StarTrek'' did ShownTheirWork in that Leonard Nimoy's make-up did tend towards a more greenish cast than everyone else's. It did take several tries, however, to get this to work the way they wanted when combined with the lighting and the other make-up, which occasionally had hilarious results--especially in early episodes of the show.
341** While the pigment in Vulcan and Romulan blood may use copper similarly to how human blood uses iron, the pigment would not be all that much like hemoglobin. The usual color of copper-based respiratory pigments in Earth life (which are similar to hemoglobin) is blue.
342** Parodied in [[https://www.offthemark.com/cartoon/science/biology/1996-08-04 a comic]] by Mark Parisi (''Off the Mark'', August 4th 1996), which shows a movie theater on planet Vulcan. The father reassures his son that what he sees on the screen is not real blood, just guacamole.
343** In the movies, Klingons have pink blood. Ironically, ''Film/{{Star Trek VI|The Undiscovered Country}}'', which introduced the Klingon Pepto-Bismol Blood, shows a Klingon bleeding red blood in a climactic scene - at least in the theatrical version. Video releases restored a scene cut from the theatrical release explaining this (the "Klingon" is really a human wearing a {{rubber forehead|Aliens}}).
344** The shapeshifters of ''Series/StarTrekDeepSpaceNine'' once caused some paranoia over their infiltration capabilities. As such, Starfleet briefly initiated required blood tests of officers and their family, as any of the shapeshifters' substance removed from their body would instantly revert to their protoplasm. Reassuring? Not quite, as Captain Sisko's father proceeds to point out that if he were a shapeshifter, he'd just kill some poor shlub and use ''their'' blood to get around the test. The fact the idea is introduced by someone who later proved to be a changeling infiltrator didn't help.
345** The Andorians have blue blood, which is just icing on the cake since they also have blue skin and antennae. Bolians also have blue blood (and, again, blue skin).
346** Cardassian blood is black. This also applies to other animal life native to Cardassia Prime, such as the raw fertilized taspar egg Picard eats in the ''Series/StarTrekTheNextGeneration'' episode "[[Recap/StarTrekTheNextGenerationS6E10ChainOfCommand Chain of Command]]".
347* ''Series/{{Supernatural}}'': In "[[Recap/SupernaturalS13E10WaywardSisters Wayward Sister]]", the [[Characters/SupernaturalMonstersAndSupernaturalBeings Canids]] who originate from an AlternateUniverse have blue blood.
348* In the TV series spin-off of ''Series/{{V 1983}}'', the distinctive reverberation of the Visitor's voices was dropped due to the expense of sound dubbing, and the Visitors were given cliché green blood instead. Some viewers missed the plot point about a human who'd cut his hand actually being a [[TheMole Visitor infiltrator]], as they lacked a colour television at the time.
349* ''Series/TheXFiles'': The alien-human hybrids bleed green blood [[BloodyMurder that can produce a deadly gas]] (to non-aliens) when exposed to the atmosphere, as do the aliens themselves. This is {{lampshade|Hanging}}d in "[[Recap/TheXFilesS06E19TheUnnatural The Unnatural]]". Ironically, this means that Mulder can see an alien-human hybrid bleeding and not know there's anything weird going on because [[ColorblindConfusion he's red/green colorblind]]!
350[[/folder]]
351
352[[folder:Myths & Religion]]
353* UsefulNotes/{{Christianity}}: Wine is said to actually be the blood of UsefulNotes/{{Jesus}} Christ. Denominations that view this as happening literally (such as Catholicism and Orthodoxy) understand this as happening due to normal wine being blessed and transformed.
354* Myth/ClassicalMythology: Gods and other divine beings don't bleed red blood but a golden glowing substance called Ichor.
355[[/folder]]
356
357[[folder:Tabletop Games]]
358* ''TabletopGame/ArsMagica'': Lord Marsyne rules over a wintry FaerieCourt, wields [[AnIcePerson ice-related magic]], and literally has ice water running through his veins. The liquid is also saturated with {{Mana}}.
359* ''TabletopGame/DungeonsAndDragons'':
360** Fire trolls have mauve blood that corrodes metal.
361** ''TabletopGame/OrientalAdventures'': One way to identify octopus hengeyokai (shapeshifters) is that, even in human form, they have blue blood.
362* ''TabletopGame/EmpireOfSatanis'': The blood of fiends is green and poisonous.
363* ''TabletopGame/{{Malifaux}}'': The Nephilim have black blood that burns any non-Nephilim that come in contact with it.
364* ''TabletopGame/VampireTheRequiem'' {{downplay|edTrope}}s this with the "vitae" of vampires: it looks like the mortal blood it's derived from, sometimes growing thicker and darker as the vampire's blood potency grows, but flows according to the vampire's will -- it doesn't spill out of injuries, gravity or no, unless the vampire wants it to.
365* ''TabletopGame/Warhammer40000'' has a number of different takes on this:
366** In an aversion of the "HumanAliens have coloured blood and pink skin" error, the Tau do not look like humans partly ''because'' they have deep blue-purple blood (their equivalent of haemoglobin uses cobalt instead of iron), which has the expected effect on their skin tone. In one of the ''Literature/CiaphasCain'' novels, Amberley Vail notes that it smells horrible.
367** The Orks, who are in fact [[PlantAliens genetically-engineered carnivorous space-fungi]], have green skin but red blood (and mouths). It wasn't always this way and earlier sourcebooks for the game described Ork blood as green, but eventually red gore was decided on. This was explained in ''Magazine/WhiteDwarf'' magazine with an in-universe biologist's report: while Orks' dense green skin is a chlorophyll- and spore-producing layer, the rest of their body is relatively normal meat, and they have a normal (if supercharged) food-based metabolism to support it. On the same page, the game developers gave the real reason: green injuries on green-skinned aliens were hard to notice, and made the models look like "they've had an accident eating a gooseberry squishy". [[DependingOnTheWriter Some sources]] have indicated that the Orks' blood does double duty as their equivalent of a lymphatic system, and that the colour of the blood will as a result vary depending on their diet, ranging from bright crimson to almost black.
368** The Eldar have red blood like humans, but it crystallizes instead of forming scabs.
369** On the transhuman spectrum, Space Marines are sometimes mentioned in-universe to have ''extremely'' bright red blood, due to its efficiency in transporting oxygen. Some also have corrosive or otherwise dangerous blood as a further defense against attackers.
370* ''TabletopGame/WarhammerFantasy'': Older editions allowed Chaos Champions and mutants to gain this -- as {{Lovecraftian Superpower}}s. Some of the types of blood they could have included molten metal, electrically-charged slime, and a symbiotic BlobMonster that reacts to anyone poking holes in its host's skin by sticking CombatTentacles out through the wounds to try and kill them. The most detailed list can be found in the ''Tome of Corruption'' for ''TabletopGame/WarhammerFantasyRoleplay'', which details ''twenty different kinds'' of blood replacement.
371** Acid, electricity, fire, molten metal and poison, obviously, are all lethal to your assailant.
372** There are several variants where "blood" equates to "living animals" -- centipedes, ants, beetles, leeches, maggots, worms, even ''mice and small birds''. In all cases, these attack the person who wounded you, usually causing minor damage and fighting penalties (birds just cause penalties and mice just cause damage).
373** Excrement (you do ''not'' want details) makes you so disgusting that your enemies find it harder to fight you.
374** Eyeballs give you a tactical advantage because you can still see through them.
375** Glue can temporarily stick an enemy against you.
376** Mucous, mud and wax are disgusting, but harmless.
377** Protoplasm means that, if you die, a BlobMonster will emerge and attack your killers.
378** Tar will spurt out and make your enemy all sticky, impairing their mobility.
379** Vines will rip into enemy flesh, harming them and impairing movement.
380** Vomit is not only disgusting, but induces mutations.
381** Wind is deafening and eerie.
382* ''TabletopGame/WorldWarCthulhu'': Agents are instructed to take care to avoid contact with any fluids discharged from knife wounds. Not all creatures bleed as humans do, and some such discharges are toxic or corrosive.
383[[/folder]]
384
385[[folder:Theme Parks]]
386* ''Ride/GodzillaVsEvangelionTheReal4D'' at [[Ride/UniversalStudios Universal Studios Japan]] depicts [[spoiler:its version of King Ghidorah]] with glowing blue energy for blood.
387[[/folder]]
388
389[[folder:Visual Novels]]
390* ''VisualNovel/DraKoi'': Dragons bleed gold. When in human form, this also includes normal human blood.
391* ''VisualNovel/MarcoAndTheGalaxyDragon'': Zigzagged. While many aliens have purple blood and a few have green blood, some—like [[DemBones El Skeleton]] and [[HumanAliens Gargouille]]—have red blood.
392* ''VisualNovel/{{Policenauts}}'': The "Frozeners" have white artificial blood, called "first-generation" blood, which is said to be simpler than the "third-generation" blood used on Home (Earth). It's also said to transport oxygen more efficiently than regular blood, making blood loss less of a threat.
393[[/folder]]
394
395[[folder:Webcomics]]
396* ''Webcomic/BloodyUrban'' has [[OurVampiresAreDifferent Vampires]] with black blood, and [[OurGhoulsAreCreepier Ghouls]] with luminous green blood.
397* ''Webcomic/CharbyTheVampirate'': The Orrotta have violet [[http://www.charbythevampirate.com/comic/1039 blood]].
398* ''Webcomic/CommanderKitty'' usually features BloodlessCarnage, but that didn't stop Nin Wah [[http://www.commanderkitty.com/2011/05/15/saved-by-the-bell/ from staining the walls blue with Zenith's Tagged goons.]]
399* ''Webcomic/{{Consolers}}'': The companies bleed ''money'', also doubling as a VisualPun.
400%%* ''Webcomic/{{Cordless}}'': Terronians' hair reflects their blood color.
401* ''Webcomic/TheDreamlandChronicles'': Nicodemus has green blood.
402* ''Webcomic/{{Earthsong}}'': Used frequently. The colors don't always precisely match (Zaebos, a traditionally red demon, has black blood), likely for the same reasons they don't always in humans, but they tend to be darker versions of skintone.
403* ''Webcomic/EnemyQuest'': The Skut possess acidic blood. This was taken advantage of during [[AlienInvasion the war with the Visitors]], where the Skut would [[ActionBomb strap bombs to their backs and ambush human fireteams]]. Anyone who the blast didn't get was splashed with the stuff.
404* ''Webcomic/GrrlPower'': Maxima. She's a super who might technically not be human any more, and bleeds blue. She still blushes red, though. The author mentions originally planing to have her blush green, but that just made her look ill.
405* ''Webcomic/{{Heartcore}}'': Salamander demons such as Carval have navy-blue blood that is highly volatile and ideal for making bombs. Common wisdom dictates that it's a bad idea to make salamander demons bleed. [[spoiler:Carval's previous incarnation, Volaster, exemplified this when he bled enough to turn himself into an UnholyNuke.]]
406* ''Webcomic/HoovesOfDeath'': Both PlayedForLaughs and PlayedForDrama, as the unicorn soldiers literally bleed rainbows when wounded. While inherently humorous, it doesn't undo the fact that they live amidst a grim ZombieApocalypse where being torn limb from limb is a real possibility.
407* ''Webcomic/{{Homestuck}}'':
408** The [[OurTrollsAreDifferent trolls]] have a complex caste system based on the color (thirteen known exist) of their blood. Each troll has a different blood color, spanning the entire color spectrum. The highest castes have literal [[RoyalBlood Royal (Purple) Blood]], while the lowest castes have brownish red blood. Trolls higher on the spectrum live longer lives and tend to possess greater physical strength, while rustblood colors tend to have greater psychic powers. Greenbloods (the middle colors) tend to be more emotionally stable. Additionally, Karkat, Kanaya, and Feferi, have rare and special blood-types.
409*** Karkat's blood is a mutation -- bright red [[SubvertedTrope like human]] and carapacian blood. This puts him completely outside (and beneath) the entire hemospectrum and has only been possessed by one other troll in history, his ancestor The Sufferer. As a result, Karkat opts for "blood anonymity" by typing in grey instead of his blood color as all the other trolls do.
410*** Kanaya has jade blood, which also lets her enjoy Alternia's blistering sunlight and be awake during the day when the undead normally stir, making her Alternia's {{Goth}} equivalent. It also marks her as one of the trolls to tend to the mother grub.
411*** Feferi's blood is literally [[PurpleIsPowerful royal purple]] (fuschia), making her heiress to the throne, because it physically grants her protection from the BrownNote of her EldritchAbomination guardian even at its [[TheEndOfTheWorldAsWeKnowIt highest level]].
412*** Each troll's lusus (a monstrous surrogate parent) shares the same blood color as their adopted troll. In addition, all the Horrorterrors share the same fuschia color Feferi and her lusus do.
413*** Also, for some reason, troll robots and artificial limbs have blood. Equius uses this to give a rustblood he has a crush on a robot body with blue blood befitting his station. This makes her occasionally prone to violent outbursts, like Equius himself.
414** His Honorable Tyranny, the figurehead monster "in charge" of the Alternian court system, has black blood.
415** Cherubs blood color depends on which personality is dominant. Calliope has lime-colored blood (same name as an exterminated troll caste, but a different color), while her [[TwoBeingsOneBody "brother"]] Caliborn has the same red as humans do. In fact, Calliope implies that an entire species having exactly the same color blood is very unusual across Paradox Space... apparently humans are the oddballs in this story.
416* ''Webcomic/KillSixBillionDemons'': In "King of Swords", there's a scene where Solomon David slaughters a horde of challengers of different species from around the multiverse. He uses SupernaturalMartialArts of a kind that easily tears his opponents apart. A couple of them are revealed to contain purple gore rather than red.
417* ''Webcomic/LeavingTheCradle'': The Sashli -- sapient squids -- have blue blood.
418* ''Webcomic/LoreOlympus'': True to [[Myth/ClassicalMythology Greek mythology]], the blood of gods, Ichor, is gold in color.
419* ''Webcomic/OurLittleAdventure'': The Zebroian Outsider has very unique, multicolored, shifting blood, which he and others believe to be cool.
420* ''Webcomic/{{Outsider}}'': Soia-Liron species, such as the Loroi and Barsam, have blue, copper-based blood.
421* ''Webcomic/{{Serix}}'': Blood (and other fluids) come in a variety of colors across the wildly varying HumanSubspecies the comic portrays. Even the characters that look just like normal humans can have this trait as a reminder of the various body modifications they might have. For example, [[TheHero Rees]] is shown to have blue tears and Avery's blood is green.
422* ''Webcomic/SluggyFreelance'': The alien that attacks [[RedShirt Dykowski]] has ''[[https://web.archive.org/web/20030612060505/http://beta.sluggy.com/daily.php?date=971013 concentrated orange juice]]'' for blood. The bad part, according to the crewmember studying the creature, is that it's the ''homestyle kind''.
423-->'''Captain:''' With pulpy bits? '''EEEWWWW!'''
424* ''Webcomic/{{Snarlbear}}'': The Snarlbear that Daisy kills has brilliantly hued, color-shifting blood. Daisy has it herself, now.
425* ''Webcomic/SupernormalStep'': Hall and Eva are [[CompleteImmortality complete immortals]] that [[BlackBlood bleed black]] when injured.
426* ''Webcomic/TowerOfGod'': Ren's creatures are green-blooded. And orange. And red.
427* ''Webcomic/UnknownLands'': Dark Elves' naturally red blood has been turned blue.
428[[/folder]]
429
430[[folder:Web Original]]
431* ''WebVideo/TheAdventuresOfTheLeagueOfSTEAM'': When the leprechaun in "Fool's Gold" is dispatched, he turns into a pile of green goo.
432* ''WebAnimation/HelluvaBoss'': As first displayed by Blitzo in "[[Recap/HelluvaBossS1E1MurderFamily Murder Family]]" before being shown off extensively in "[[Recap/HelluvaBossS1E2LooLooLand Loo Loo Land]]", hell-born demons have near-completely black blood with only a tint of red, unlike humans which bleed a natural full red.
433* ''WebVideo/TheHorriblySlowMurdererWithTheExtremelyInefficientWeapon'': The Ginosaji has black blood.
434* ''LetsPlay/LetsDrownOut'': When Yahtzee explained that the plot of ''VideoGame/{{Aquanox}} 2'' revolves around horseshoe crabs, Gabriel waffled of the importance of them, specifically their blood. It is 'milky, kinda blue' and based around cobalt. It is used to test for blood borne pathogens because it reacted violently in any presence of infections.
435* ''WebAnimation/LoboWebseries'': Hilariously averted for most deaths. Almost everyone bleeds red. A few aliens have green blood, though.
436* ''WebAnimation/MadnessCombat'':
437** [[EliteMooks A.T.P. units]] secrete yellow blood, a sign that they have been genetically enhanced.
438** The Madness Combat universe has two different hells and both seem associated with black blood. When Deimos is travelling in the normal hell, he bleeds black goop, while Sanford's normal red wound becomes black shortly after being forced into the Auditor's hell.
439* ''Literature/MetroCityChronicles'': Squid Kid has black blood.
440* ''WebVideo/TheNostalgiaCritic'': Santa Christ loves pancakes so much that he bleeds maple syrup.
441* ''WebOriginal/ProtectorsOfThePlotContinuum'': "Mary Sue" characters bleed red or pink [[EverythingsBetterWithSparkles glittery]] blood, or, in extreme cases, "only" glitter.
442* ''Literature/TheSalvationWar'': Angelic blood is white or silver, while demonic one is not only often acidic but also either green or yellow.
443* ''Franchise/TheSlenderManMythos'': Due to RunningTheAsylum, it varies, but if the Slender Man bleeds at all, his blood is often black. [[InvincibleVillain Injuring him in the first place requires multiple miracles,]] though, so this doesn't come up much.
444* ''WebAnimation/SockSeries'':
445** Gaeous the god of dirt can produce a green plant parasitic fluid which serves as their tears and their blood.
446** Uquorion the god of fluid have both purple blood when they gets bitten to death and gray blood when their corpse falls on the ground.
447* ''WebVideo/UnwantedHouseguest'': The orderlies of Litchfield Asylum bleed green.
448* ''Literature/VoidDomain'': Demons are said to always have black blood.
449* ''Literature/WhateleyUniverse'':
450** Carmilla, a student at the SuperHeroSchool Whateley Academy, is mostly-demon, even if she looks like a hot 'urban vampire' goth kid. She bleeds a blackish-purple ichor which is definitely not blood.
451** Eldritch, another student, is a mystical Artificer who bleeds a roughly-blood colored stuff that's too high in metals to be anything a human could have in his/her veins.
452* ''Literature/XanaduStoryverse'': Due to being transformed into a part-Vulcan, Hannah bleeds green, copper-based blood.
453[[/folder]]
454
455[[folder:Western Animation]]
456* ''WesternAnimation/AmericanDad'': Roger's blood is purple. However, some episodes depict Roger’s blood as red like human blood for no explained reason (since it's usually red while he's wearing a disguise and purple while he isn't, it's possible that Roger is able to somehow change the color of his blood in order to pass as human.)
457* ''WesternAnimation/{{Amphibia}}'': [[spoiler: In "All In", during their battle, Sasha cuts Darcy's cheek, and for some reason it spills a single drop of green blood despite Marcy being a human. Presumably this was a side-effect of whatever modifications and techniques Andrias used to save Marcy from his impalement and make her into a suitable vessel for the Core]].
458* ''WesternAnimation/Animaniacs2020'': In "[[Recap/Animaniacs2020Episode11 Bride of Pinky]]", the zombie and the two monsters Brain bring to life bleed green blood, which is how they were able to get away with it.
459* ''WesternAnimation/BatmanTheAnimatedSeries'': In [[Recap/BatmanTheAnimatedSeriesE5PrettyPoison "Pretty Poison"]], Batman cuts himself free from the [[VineTentacles tendril grip]] of Poison Ivy's [[ManEatingPlant giant, carnivorous flytrap]], which causes it to bleed green (chlorophyll).
460* ''Franchise/Ben10'':
461** ''WesternAnimation/Ben10AlienForce'': If [[Characters/Ben10SupportingCharacters Magister Labrid]]'s "that's not water" is to be taken at its direst, his species has neon blue blood that steams on contact with at least Earth's atmosphere.
462** ''WesternAnimation/Ben10UltimateAlien'': Near the end of "[[Recap/Ben10UltimateAlienS1E07AndreasFault Andreas' Fault]]", [[https://vignette.wikia.nocookie.net/ben10/images/e/ee/AF_%28508%29.png an injured Andreas is depicted with dark grey blood]].
463* ''WesternAnimation/DannyPhantom'': Apparently, ghosts (and half ghosts in their ghost forms) bleed glowing green Ectoplasm...
464* ''WesternAnimation/FinalSpace'':
465** The diminutive alien Clarence bleeds purple blood...
466** ...as does his adoptive son (from another alien species), Fox.
467** The Lord Commander bleeds blood as black as his heart, but apparently this wasn't always the case -- before his corruption and gaining his powers, his blood was shown to be pink.
468** The [[EldritchAbomination Titans]] Bolo and Oreskis bleed green blood when they fight in Season 3.
469* ''WesternAnimation/FishPolice'': In "The Codfather", when the titular character is murdered (or so we're led to believe) his blood is purple.
470* ''WesternAnimation/{{Futurama}}'': Kif Kroker bleeds viscous green blood. It's tangy!
471* ''WesternAnimation/GravityFalls'':
472** Both the zombies from "[[Recap/GravityFallsS2E1Scaryoke Scary-oke]]" and the shapeshifter from "[[Recap/GravityFallsS2E2IntoTheBunker Into the Bunker]]" bleed green blood, likely the only reason why the fairly graphic violence against them was allowed on the Disney Channel in the first place.
473** "[[Recap/GravityFallsS2E15TheLastMabelcorn The Last Mabelcorn]]": The titular unicorn is punched in the nose and starts bleeding rainbow-colored blood. Later, after Mabel, Grenda, Candy, and Wendy fight the unicorns, they come back with their clothes stained with blood the same color.
474* ''WesternAnimation/HazbinHotel'': [[OurAngelsAreDifferent Angels]] are shown to have golden blood.
475* ''WesternAnimation/InvaderZim'': In a scene near the end of "[[Recap/InvaderZimS1E31Lice Lice]]", Zim the Irken is skinned and the tissue underneath is green. Of course, considering that Zim's ''skin'' is green, it makes sense. WordOfGod says that Irkens have see-through pink blood.
476* ''WesternAnimation/LloydInSpace'': It's mentioned that Verdigrians, Lloyd's race, have orange blood.
477* ''WesternAnimation/MegasXLR'': One episode features a shapeshifting {{plant alien|s}}. Once Coop discovered its true nature, he formed one of the robot's limbs into a chainsaw and got to work. The scene of the chainsaw going into the creature while green goop flies out goes on for [[OverlyLongGag over thirty seconds]].
478* ''WesternAnimation/TheOwlHouse'':
479** While most denizens of the Boiling Isles seem to have the same red blood that humans have (on the few occasions where bleeding is actually shown), the blood of [[GiantCorpseWorld the Titan]] is shown to be blue. [[spoiler:Presumably, this is the reason why we never see the blood that Hooty drew for King's DNA test in "Knock, Knock, Knockin' on Hooty's Door", because it would give away the fact that he was an infant titan several episodes early.]]
480** Palismen blood (or, at the very least, the magical liquid that animates them) is a bright glowing green.
481* ''WesternAnimation/SolarOpposites'': The Shlorpians' blood is blue.
482* ''WesternAnimation/TheSimpsons'': Parodied in "[[Recap/TheSimpsonsS12E1TreehouseOfHorrorXI Treehouse of Horror XI]]" when Moe is trying to convince a group of kids that he's not a troll because he bleeds red. Then he nicks his finger, and a frustrated Moe sees green blood spurting from the wound.
483* ''WesternAnimation/StarTrekLowerDecks'': In "[[Recap/StarTrekLowerDecksS2E04MugatoGumato Mugato, Gumato]]", when a mugato attacks a Ferengi, yellow fluid splashes out. Similarly, the Tellarite Patingi has purple blood.
484* ''WesternAnimation/StarWarsTheCloneWars'': In [[Recap/StarWarsTheCloneWarsS2E3ChildrenOfTheForce "Children of the Force"]], Cad Bane gets caught after disguising himself as a clone trooper because he was injured and bled a little bit on the floor of the shuttle, and no one who was ''supposed'' to be on that ship had green blood.
485* ''WesternAnimation/StevenUniverse'' plays with it: [[BloodlessCarnage Gems do not bleed]], but they do ''blush'' [[http://steven-universe.wikia.com/wiki/Thread:541419 strange colors]] -- for Pearl it's teal, while for every other gem it's something close to their [[AmazingTechnicolorPopulation various skin colors]]. Making it even weirder is that as their bodies are HardLight, they probably don't even ''have'' blood.
486* ''WesternAnimation/{{Superjail}}'': The Twins have green luminescent blood, as shown in "Combaticus", while their father has a more saturated lime color. This could be ArtisticLicense or the colorists having forgotten the glowing detail. Other aliens shown in the series are also shown to bleed in green. On at least two brief occasions, the Twins have been depicted with red blood (after being crushed in "Combaticus", and with bleeding from their ears and noses in the ending of "Troubles with Triplets") which could either be a coloring error or another artistic choice.
487* ''WesternAnimation/SupermanTheAnimatedSeries'': In [[Recap/SupermanTheAnimatedSeriesS1E1To3TheLastSonOfKrypton "The Last Son of Krypton"]], when Brainiac's pod is found by alien travelers, he boards the ship and impales them all, with their blood splattering on the walls.
488* ''WesternAnimation/SymBionicTitan'': Most of the alien blood is green.
489* ''WesternAnimation/TeenageMutantNinjaTurtles2003'': Agent Bishop seems to have this as a result of his alien-altered physiology; after he was impaled by a hook in one episode, one could briefly see a thick, silver-colored liquid seeping into his clothes.
490* ''WesternAnimation/ThunderCats2011'': In "Ramlak Rising", the GiantSquid[=/=]ManEatingPlant HybridMonster the Ramlak is shown to have a strange blue ichor dripping from the severed ends of tentacles that Lion-O slices off when it first surfaces from the [[SandIsWater Sand Sea]] and attacks. When Lion-O strikes a mortal blow, it's revealed that the monster's blood is, appropriately enough, ''water.''
491* ''WesternAnimation/TransformersPrime'': The life-force of Cybertronians is Energon and it varies from blue, to green, to a purple-pink, and it glows. But when the robots are injured it acts exactly like blood.
492[[/folder]]
493
494[[folder:Real Life]]
495* Arthropods:
496** While certainly not aliens, most insects bleed light yellow (as mentioned above), some green; crustaceans bleed blue.
497** The most famous of these is the humble horseshoe crab, with blue copper-based blood. Scientists routinely extract blood from the crabs for all kinds of medical procedures & tests, then release the animals after they've regenerated their blood.
498* Mollusks tend to have blue blood.
499* Ditto spiders, whose hemocyanin gives them greenish blue blood.
500* There is a species of pen shell called ''Pinna squamosa''. What makes it unique is that it is the only mollusc to use manganese to store oxygen, in a protein called pinnaglobin. As a result, it has brown blood.
501* Inverted with deep-sea tube worms, which have red blood like ours despite being from a taxonomic line in which iron-based blood pigment isn't expected.
502* The ''Prasinohaema'' genus of skinks, in contrast to every other healthy vertebrate, have green blood (as well as green muscles, bone, and everything else). This is caused by levels of biliverdin (bile pigment) in the blood that are so high they would kill any other vertebrate. The name, of course, means "green blood."
503* Due to having little to no hemoglobin, [[http://earthsky.org/biodiversity/kristin-obrien-antarcticas-icefish-have-translucent-bodies-and-blood Antarctic icefish]] have translucent white blood.
504* Underwater, red blood appears green below a certain depth (red blood cells separate from the plasma, turning it yellow, which then combines with the blue tint of the water).
505* Eel blood, although it doesn't ''look'' "alien", is toxic to humans and other mammals. Beware eel sushi that looks too pink!
506* In humans...
507** Blood coughed up by accident victims with pierced lungs can be [[{{Squick}} foamy and pink]].
508** Sulphur can turn a person's blood green.
509** Carbon monoxide poisoning turns red blood an even brighter, unnatural-looking shade of red.
510** A convention of anatomical illustration is that deoxygenated blood vessels are depicted in blue on drawings and models. This sometimes leads people to the false conclusion that deoxygenated blood is blue; in fact, it's a reference to how the ''outsides'' of systemic veins, which carry this type of blood, look blue when seen through the paler shades of human skin.
511** While their actual blood doesn't look different, the bone marrow of a patient with advanced leukemia looks lighter in color than that of a healthy person, due to being overloaded with immature, non-functional white blood cells.
512** Methemoglobinemia is a genetic disorder that causes heightened levels of methemoglobin, which has a lower affinity for oxygen than hemoglobin, making the blood blue or brown. The most famous cases of methemoglobinemia are the "Blue Fugates", a Kentucky family known for their blue complexion.
513** Everyone has a small quantity of "blue blood cells" in their body thanks to the element gallium. Gallium can and will take the place of iron in the red blood cell, turning the hemoglobin blue.
514** [[https://www.google.com/amp/s/www.mediareferee.com/nba-news-did-nba-player-cedi-osman-actually-bleed-yellow-from-his-nose/amp/ Cedi Osman of the Cleveland Cavaliers]] shocked viewers in an incident in December 2022 when, during a basketball game, he suffered facial trauma and began to have what appeared to be a nosebleed-- except said blood was "yellow", much to the bewilderment of audience and announcers alike. It has been suggested Osman has a nasal infection and the yellow "blood" was really runny mucus, but that didn't stop MemeticMutation on social media to joke that he was actually an alien.
515* Artificial blood:
516** The trope of {{artificial human}}s having white blood possibly comes from the early research into oxygen-carrying temporary blood replacements for emergency surgery. Some of these work using very different chemical processes to naturally occurring blood (of any colour) and look a lot like milk.
517** Other scientists are getting in on the fun too, it seems. They have created a oxygen-binding molecule called coboglobin, which is based on cobalt. Like human blood, it changes colors based on if it's oxygenated or not. If it is, then it's clear; if not, it turns amber yellow.
518** Perftoran/Perfukol/Fluozol-DA is blue. In the 1980s Soviet medics called it "blue blood". It's a water emulsion of fluororganic compound that can carry twice more oxygen than erythrocytes.
519* Invertebrates in the phylum Priapulida (also called "Penis Worms") actually have purple blood thanks to the presence of an organic molecule called haemerythrin.
520* Chickens of the Ayam Cemani breed, from Indonesia, have a type of extreme hypermelanism that makes every organ in their body - skin, feathers, legs, combs, meat, guts, bones, etc - pitch black. Their blood is the only ''non''-black thing about them, and it's a very dark red compared to other birds'.
521* Sea cucumbers have yellow blood. Nobody knows why, as the substance (vanabin) that makes it that way doesn't appear to serve a function in gas transport like most bloodborne pigments do.
522* In a vegetative variant, some of the native plants of New Caledonia, an isolated Pacific island chain, have bright electric-blue ''sap'' due to the local soil's semi-toxic levels of nickel and magnesium.
523[[/folder]]

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