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9[[quoteright:304:[[VideoGame/MetalSlug https://static.tvtropes.org/pmwiki/pub/images/mslug3004_6753.png]]]]
10[[caption-width-right:304:Just ''had'' to eat at Denny's, didn't you?]]
11
12->''"It's got a wonderful defense mechanism. You don't dare kill it."''
13-->-- '''Parker''', ''Film/{{Alien}}''
14
15Generally, bleeding isn't a good thing, what with the whole "bleeding to death" bit and there usually being an angry person nearby wanting to make you bleed some more; however, some have the ability to turn their lifeblood into the deathblood of their adversaries.
16
17Whether it's a [[OurVampiresAreDifferent vampire]], "{{Blood Mag|ic}}e," aliens, {{Mutant|s}}, [[OurDemonsAreDifferent demon]] or more exotic fare, this character can kill with Bloody Murder, the ability to use ''blood'' as an offensive weapon. Possible weapon mechanisms include:
18* '''Poison Blood:''' [[PoisonousPerson The blood itself is poisonous]], and either direct contact or indirect exposure to it is enough to kill.
19* '''Corrosive Blood:''' The chemical nature of the blood is such that it eats through metal and flesh -- [[RequiredSecondaryPowers presumably the owner has sufficiently resistant veins and tissue]].
20* '''Blood Weapons:''' The blood can "[[BodyToJewel crystallize]]" or [[ShapeshifterWeapon solidify into a weapon]]. Usually, this is helped by most fictional characters having [[OverdrawnAtTheBloodBank excessive amounts of blood in their bodies]]. May overlap with ExtraOreDinary if they're manipulating the [[BloodIron iron in the blood]], which may let them turn blood into sharp blades.
21** '''Prehensile Blood:''' An extension of the above and similar to PrehensileHair, only this blood is a [[CombatTentacles tentacle horror]].
22* '''Projectile Blood:''' Sprays the blood or shoots it in globs, in a similar phenomenon to MakingASplash.
23* '''Blood Boost:''' The character gains increased abilities as he bleeds. This is almost always due to [[BloodMagic magical power inherent in spilling blood]] (only [[CastFromHitPoints focused on the caster's own body]] rather than a victim), but it occasionally has some other explanation.
24* '''Blood Horrors:''' The blood can [[MookMaker spawn]] [[FertileBlood minor minions]] to do their master's bidding, or even [[SelfDuplication clones of said user]]. Compare this one with AsteroidsMonster.
25* '''Boiling Blood:''' Instead of using his blood, the character can boil [[MyBloodRunsHot his own]] or his enemies' blood in their veins, leading to a ''[[CruelAndUnusualDeath very messy]]'' death.
26
27These characters might have BlackBlood or AlienBlood as side effects/causes for their powers, but will usually have at least HollywoodHealing or a HealingFactor to deal with multiple open wounds. Often this is {{justified|Trope}} by saying that controlling the blood allows for faster healing. If they can actually manipulate blood (including voluntarily shooting blood from their body) it overlaps with MasterOfYourDomain.
28
29If the blood is drawn from the user wounding themself somehow then it's a SelfHarmInducedSuperpower.
30
31Not to be confused with RustproofBlood or ''VideoGame/MeltyBlood''. Or with a murder that is simply [[OverdrawnAtTheBloodBank unrealistically bloody.]]
32----
33!!Examples:
34
35[[foldercontrol]]
36
37[[folder:Anime & Manga]]
38* In ''Manga/AkameGaKill'', a fatally-wounded Liver manipulates the water in his body to fire it at Bulat as a TakingYouWithMe attack. It barely seems to affect Bulat... [[spoiler:then Liver reveals the SuperSerum he'd taken earlier also contained a deadly incurable poison]].
39* Ginshu, the {{Miko}} from ''Manga/{{Amatsuki}}'', has blood that is poisonous to demons. This prevents them from eating her[[spoiler:/him]] (though it doesn't stop them trying).
40* In ''Manga/{{Basilisk}}'', [[FemmeFatale Akeginu]] of the Iga Tsubagakure group not only is extremely seductive as well as deadly with her trusty ''tanto'' dagger, but she can also control her own blood, secreting it out of her pores to blind or tag her opponents or create a sort-of mist as she mixes it with the air in her surroundings.
41* In ''Manga/BlackCat'', Charden has the power to manipulate blood, mostly his own.
42* ''Manga/BlackClover'':
43** By injecting her blood on a target, the [[LadyOfBlackMagic Witch Queen]] can use her Blood Magic to take control of them. Alternatively, she's powerful enough that she can also use her blood to heal wounds or exorcise ancient curses that modern magic is powerless against. She can even bottle up her magic in order to allow a third party to use it. Finally, she can form a scythe made of blood to attack with.
44** Vanica uses her Blood Magic to attack by solidifying it, forming wings and a giant claw from which she can unleash bladed beams of blood. Her magic can be weakened if she's surrounded by a body of water, [[LogicalWeakness which causes her blood to dissolve]], though Vanica is so strong that [[ScissorsCutsRock she can power through most water attacks regardless]].
45* ''Manga/{{Bleach}}'':
46** Mayuri tends to fill Nemu's body full of poisons and various experimental drugs. In at least once case, when an enemy tried to use her body to regenerate himself, the poison was transferred to him with dire results. Another enemy consumed Nemu's remains after reducing her to LudicrousGibs, and contracted an equally ludicrous form of cancer that was only kept in check by Nemu's brain, which said enemy could not eat after Mayuri specifically prevented it from doing so.
47** Giselle Gewelle has the power to take control of anyone who touches her blood. Her main tactic is to goad people into slashing her so her blood splatters on them. She has a HealingFactor, so she doesn't have to worry about dying.
48* ''Anime/BloodPlus'':
49** Chevalier can be killed only if exposed to the blood of the other Chiropteran Queen. Likewise, a Queen can only be killed by her sister's blood. [[spoiler:It stops working after they become pregnant.]] While anything that exposes a Chiropteran to the opposing Queen's blood will work, such as Saya cutting herself with an ordinary knife and then cutting a Chiropteran with it, her signature weapon is a customized [[KatanasAreJustBetter katana]] with a small sharpened section on the back of the blade and groves to spread her blood along its full length.
50** Saya also enters a state of increased strength, speed, and senses if she draw her own blood.
51* ''Manga/BloodBlockadeBattlefront:'' All of the main members of Libra (barring [[NonActionGuy Leo]] and [[OurWerewolvesAreDifferent Chain]]) are capable of weaponizing their blood in a variety of ways.
52* Tsukimiya from ''Manga/BloodyCross'' can weaponize her blood, for example her "Blood Tepes/Blood Skewer" attack can make her spilled blood turn into spears that shoot up and impale her opponent.
53* In ''Manga/Brave10'', aside of LotusEaterMachine, Kuchiba's other skill is to weaponize blood.
54* ''Manga/BungouStrayDogs'' antagonist Nathaniel Hawthorne can turn his blood into scripture quotes that can be used in a variety of ways. Small passages get sharp edges and are weaponized; longer excerpts can be condensed to use as a shield.
55* Power of ''Manga/ChainsawMan'' is a Fiend, or a devil inhabiting a human corpse. As a blood devil, she uses her host body's blood to create weapons.
56* ''Manga/CodeBreaker'': The five [[QuirkyMinibossSquad Saint Fighters]] [[spoiler: Aoba/Code:Revenger's goon squad]] all have this ability. This might be a sign that they're [[spoiler: sisters, since the only other pair of people with the same power is a sister who shared it with her brother]].
57* In ''Anime/DarkerThanBlack'', the contractor Wei Zhi Jun is shown to have ''[[PortalCut teleporting]]'' blood, which he uses offensively by cutting himself and splattering it on his opponents before he it activates it by snapping his fingers to take chunks of people and objects with it. Superpowers in this setting are PowerAtAPrice, requiring acts called "remunerations" to use them, but Wei's remuneration is cutting himself, and the cut he makes to draw blood for this power explicitly counts, so [[CursedWithAwesome he basically doesn't have a remuneration]].
58* ''Manga/DeadmanWonderland'' features a group of protagonists called Deadmen who possess the unique ability to kinetically control their own blood, which they primarily use to shape it into weapons--whips, bullets, you name it. The lead is the one with the bullets, which is annoying since the thing about bullets is they don't 're-use' very well, and Crow with his scythe can just keep slicing while [[TheWoobie Ganta]] has less and less blood in his body to work with. It also doesn't help that Ganta is much smaller than the adult characters and thus has less blood to begin with.
59* Low-level [[TheHeartless Akuma]] in ''Manga/DGrayMan'' fire bullets made of their blood. It causes BodyHorror and very quick death. [[OurVampiresAreDifferent Arystar Krory]] has blood that's immune to it. He can also infect Akuma with his own blood, which causes much the same effect as their blood has on humans. [[spoiler:He can also make a marionette out of his own blood.]]
60* ''Anime/DigimonAdventure'':
61** Vamdemon/Myotismon possibly has this, in the form of his Bloody Stream/Crimson Lightning attack, where he conjures a scarlet-red energy whip to attack.
62** His evolved form, [[BigBad BelialVamdemon]], also has his Melting Blood attack, which dissolves enemies with blood from his shoulder cannons.
63* Though it's not actually used as a weapon, Hyatt in ''Manga/ExcelSaga'' has poisonous blood. Ingesting it will cause cramps and nausea, and it releases deadly gasses when evaporating. She also has a nasty habit of vomiting it all over the place.
64* ''Manga/FairyTail'': when Gray fights Ultear, she uses her [[TimeMaster time magic]] to melt all of his [[AnIcePerson ice.]] Since Ultear's power only works on inanimate objects, he attacks her with some of his frozen blood.
65* ''Manga/FlameOfRecca'':
66** At one point, Tokiya Mikagami begins to run out of juice for Ensui, his water-based weapon, and uses his own blood to power it.
67** Towards the end of the manga, Hiruko of the [[QuirkyMinibossSquad Shishiten]] demonstrates the ability to control blood directly, absorbing it from his enemies and using it to heal himself and create crystalline weapons.
68* In ''Manga/FullmetalAlchemist: Brotherhood'', [[AnIcePerson Isaac McDougal the Freezing Alchemist]] can freeze his blood and attack with it.
69* ''Manga/GetBackers:''
70** Akabane once used the diamond dust he'd inhaled to create another one of his infamous scalpels. Anything that mixes with his bloodstream can be manipulated thusly. His Bloody Sword seems to actually be created from his blood.
71** Emishi also has flammable blood, and once used it to [[spoiler:try to burn Shido to death]]. It's a desperate, last-chance attack, though; he usually sticks to his [[WeaponSpecialization whip]]
72* Alucard of ''Manga/{{Hellsing}}'' can make his blood, and indeed the spilled blood of others, do anything he wants. ''Anything''. This includes absorbing the blood of his victims to claim their soul, all the way up to [[spoiler: releasing literal tides of blood to spawn thousands-strong armies of said absorbed souls]].
73* Otenkun of ''Manga/HoshinEngi'' and his blood that melts metal and can turn into noxious, acidic gas.
74* ''Manga/{{Inuyasha}}'':
75** Inuyasha can use his own blood as an EmergencyWeapon, throwing crescent-shaped, sharp-edged splatters that are similar in effect to RazorWind. Though it's rarely used after he learns a SwordBeam attack.
76** In [[Anime/YashahimePrincessHalfDemon the sequel]], Inuyasha's daughter Moroha is shown to be capable of using the same technique.
77* ''Manga/JoJosBizarreAdventure'':
78** [[OurVampiresAreDifferent Both types of vampire]] can use various different attacks with blood. The Stone Mask vampires can freeze blood on contact and [[EyeBeams fire high-pressure streams of blood out of their eyes]]. The Pillar Man Esidisi from ''[[Manga/JoJosBizarreAdventureBattleTendency Battle Tendency]]'' can [[MyBloodRunsHot heat his blood to 500 degrees Celsius (932 degrees Fahrenheit)]] and shoot it out of his veins.
79** In ''[[Manga/JojosBizarreAdventureDiamondIsUnbreakable Diamond is Unbreakable]]'', Josuke's [[FightingSpirit Stand]], Crazy Diamond, [[HealingHands can restore objects to a previous state]], which Josuke once [[LethalHarmlessPowers exploits]] after spilling some of his own blood on his opponent. When he puts some more blood from the same wound on a shard of glass, "restoring" the two pieces causes the shard to [[HomingProjectile home in on his target]].
80** ''[[Manga/JoJosBizarreAdventureGoldenWind Golden Wind]]'''s Risotto Nero [[ExtraOreDinary can manipulate iron]], [[BloodIron including the iron in blood]]. This ends in such lovely images as Risotto forming a pair of scissors in his enemy's throat, and forcing him to ''vomit up razor blades.''
81* ''Manga/JujutsuKaisen'': The Kamo Clan's hereditary Cursed Technique allows them to manipulate their own blood in order to attack their target. They can control practically all aspects of their blood, up to and including temperature, solidity and pulse rate; this allows them to [[SuperMode increase their physical capabilities in melee combat]]. Higher level techniques even allow the user to ensnare their target, or shoot their blood in the form of rotating disks, hardened bullets or a highly-pressurized beam capable of slicing through concrete. Noritoshi Kamo from Kyoto Jujutsu High usually has to carry spare bags of blood when his own begins to run low. Choso, the eldest of the Death Paintings, gets around this by generating more blood from his own cursed energy; being a human-cursed spirit hybrid means he has a lot more cursed energy to spare.
82* Yuugami from ''Manga/{{Kekkaishi}}'' can turn his blood into weapons, as well as large, flying familiar-type creatures. Subverted in that he doesn't actually have any more blood than the average person and has to save it up for months before he has enough to do anything elaborate with it. He's also been shown reabsorbing blood stored for emergencies, so apparently he also has special red blood cells that can live for longer than the standard 3 or 4 weeks outside of the body.
83* In ''Manga/TheLegendOfZeldaALinkToThePast2005'', Ganon's blood itself is acidic, as shown when Link cuts him with the Master Sword and the blood dissolves [[spoiler:Agahnim]]'s corpse.
84* Vlad King aka Sekjiro Kan in ''Manga/MyHeroAcademia'' has the quirk "blood control ". He can manipulate his own blood after ejecting it from his glove. He can reabsorb the blood after the fight.
85* Nagi from the ''Manga/MyHime'' manga uses his own blood to summon Orphans.
86* ''Manga/{{Naruto}}'':
87** [[spoiler:Danzo]] turns out to have set up a technique that [[TakingYouWithMe activates upon his death]] where his blood [[SphereOfDestruction erupts into a sphere, sealing everything within it into his body]].
88** Additionally, Orochimaru (or at least [[spoiler:his true form]]) is eventually shown to have highly poison blood that evaporates into poisonous ''gas'' when spilled.
89** In an anime only scene, [[spoiler: 6-tailed]] Kyuubi!Naruto seems to bleed ''fire''.
90** Also of note is that at [[spoiler: 4 tails]], Kyuubi!Naruto's BattleAura becomes such a strain on his body that it [[HeroicRROD disintigrates his SKIN]], at which point his blood seeps out and mixes with said battle aura, turning it opaque and blood-red.
91* Vampires in ''Anime/{{Nightwalker}}'' can bite themselves and control their blood to form bladed weapons.
92* Used in ''Manga/OnePiece'' during the battle against Crocodile, who can turn into sand. His power doesn't work when he gets wet, so Luffy used the only liquid he had handy; blood from the wounds he was receiving.
93* In the ''Manga/SaintSeiyaTheLostCanvas'', Pisces Albafica manipulates his poisonous blood to attack his enemies. Since he has worked with poisons for so long that [[BlessedWithSuck his mere touch is deadly]], it also doubles as a method of injection.
94* ''Manga/SamuraiDeeperKyo'': Shinrei is able to form a sword out of his own blood.
95* Boris Tepes Dracula from ''Manga/ShamanKing'' uses blood as his spirit medium.
96* ''Manga/SoulEater'': The Black Blood can solidify in the body beneath attacks, protecting the body against blows, as seen used by both Crona [[spoiler:and Maka when she gets under its influence]]. Crona's black blood goes further, being the shapeshifting weapon partner, Ragnarok, who can still cut you up even after leaving the body in all directions. [[spoiler:Black Clown is made of black blood as well and can merge with Crona for an additional power boost.]]
97* In ''Anime/SpeedGrapher'', AntiVillain Suitengu Chouji's superpower allows him to control his blood in a variety of ways. He can create wings of blood that somehow support his weight, levitating drops of blood to throw at people, full-sized human puppets made of blood and make his blood sharp enough to cut people. On the other hand, he tries to not use it unless he can't win otherwise, since his body's need to rapidly heal itself over where the blood comes out [[CastFromHitPoints brings his cells closer to cell death,]] thereby shortening his lifespan.
98* In the second ''Anime/TengenToppaGurrenLagann'' movie, Simon finishes off the Anti-Spiral by forming his blood into a drill.
99* In the ''Manga/TenjhoTenge'' manga, among the abilities Souichiro steals thanks to his power is a sort of 'water bullet', however Souichiro uses his own blood as a medium, and usually only after being wounded as opposed to going out of his way to bleed.
100* Senri Shiki of ''Manga/VampireKnight'' can form a long, telekinetically-controlled whip of blood able to slice through most living tissue.
101* The Duel Monster Destiny Hero Bloo-D (how appropriate) in ''Anime/YuGiOhGX'' can rain down a swath of spears made out of blood spawned from his wings.
102* ''Manga/YuYuHakusho'':
103** Kiyoshi Mitarai, also known as Sea Man, had the ability to create water horrors by mixing some of his blood in it.
104** In addition, ninja demon Gama is able to make enchanted ink from his blood, which can paralyze enemies and lock their energy inside of their body, as well as, in outside material, make himself invisible. Kurama, after fighting him despite being partially paralyzed by his ink, makes the mistake of grievously injuring him, which, while causing him to die, weakens Kurama to an extreme degree due to the massive amount of blood that Gama spilled.
105[[/folder]]
106
107[[folder:Comic Books]]
108* The Engineer in ''ComicBook/TheAuthority'' has {{nanomachines}} in her blood which she uses to create weapons.
109* ''ComicBook/{{Batman}}'': The Joker has highly toxic blood. DependingOnTheWriter, it's either from [[NoOSHACompliance his tumble into a vat of chemicals]] that resulted in his appearance, or from [[GettingHighOnTheirOwnSupply sampling his own toxins]].
110* ComicBook/CaptainAtom, when he's in Captain Atom form, bleeds energy when he's cut, as do Major Force and the Silver Shield (who share his origin). When the Silver Shield was first cut, the radiation release killed Damon Long and poisoned Heinrich Megala.
111* ComicBook/CosmicBoy has manipulated the blood of those he was extremely upset with, the first time he did this he was initially planning on horrifically killing the terrorists in question but decided to keep to his no killing rule at the last second. It is extremely painful and leaves them begging for an end. He's also manipulated the iron in his own blood when low on options.
112* ''ComicBook/CrimsonPlague'' can use her blood as a very deadly weapon indeed; it will eat its way through just about anything and just a few drops are enough to turn her opponents into piles of fleshy goo. When she [[MenstrualMenace gets her period]] [[spoiler:her blood even spawns a virus that can kill a whole planet within a day]]. Add this to the fact that she's [[WithGreatPowerComesGreatInsanity batshit insane]] and you have yourself one of the nastiest comic book characters around.
113* ''ComicBook/TheFlash'': After experimenting on his blood with the blood of metapowered criminals, the hemophilic Ramsay Rosso developed the ability to transform his flesh into a blood-like physiology and became the supervillain Bloodwork.
114* ''ComicBook/GreenLantern'': The Red Lanterns have this as their main gimmick. To go a little more in depth, should you feel great rage and receive a Red Ring, you ''vomit out all your blood,'' which is then replaced by red light constructs of your bloodstream. Which means that any Red Lantern who overcomes the UnstoppableRage the ring induces (with one exception) dies immediately.
115* John Constantine of ''ComicBook/{{Hellblazer}}'' has demon blood as a result of a demon healing him. He specifically warns a child not to bite him at one point, because "you really don't want my blood in your mouth". When the King of the Vampires tries to drain Constantine, his ''jaw dissolves''.
116* [[Franchise/TheDCU DC's]] ''ComicBook/{{Lobo}}'' has the ability to spawn a full-sized clone from a single drop of blood, though it was genetically removed by Vril Dox, his former employer in ''ComicBook/LEGIONDCComics''. Different writers have seen fit to bring it back at their discretion.
117* ''ComicBook/{{Runaways}}'':
118** Nico Minoru has a staff of power that only emerges if she is actively bleeding. Normally, this involves cutting herself (which is extra hilarious due to how goth she dresses), but she can call it forth at any time when she's on her period.
119** Karolina, an alien from a race that absorbs energy from stars, accidentally kills a vampire by offering her solar-powered blood up as a HeroicSacrifice.
120* ''ComicBook/SpiderMan'':
121** Villain ComicBook/{{Carnage}} was created when an alien symbiote merged with the bloodstream of serial killer Cletus Cassidy. Mass-murder ensues.
122** Spider-Man's blood is radioactive, a fact that has caused the defeat of more than one vampire that has attacked him.
123* ComicBook/{{Superman}} was once bitten by Literature/{{Dracula}}, but his solar-powered blood made the vampire lord ''explode''.
124* The titular villain of ''Sword of Dracula'' wields telekinetic control over all the blood he has ''ever'' drained. His mastery is such that he assembles weapons, horses, minions and full-size ''castles'' with the stuff.
125* ''ComicBook/{{Vampirella}}'': Villain Hemorrhage can control any blood. (Even if still inside its proper owner.)
126* ''The ComicBook/XMen'' comics had a character who could weaponize ''other'' people's blood by making them bleed then igniting the oxygen in the exposed blood. His name was [[XtremeKoolLetterz Adam-X, The X-Treme]]. Oh, [[NinetiesAntiHero Nineties]]. (It was hinted that he was the rumored [[TangledFamilyTree third Summers brother]].[[note]]Though bear in mind that Sinister only let slip that Cyclops has more than one brother. He never said that it was ''only'' a third brother.[[/note]] If only...)
127[[/folder]]
128
129[[folder:Fan Works]]
130* In ''Fanfic/CrisisEquestria'', Red Velvet has the power to form her blood into constructs like blades and tentacles. She can make her constructs very huge even though her body couldn't possibly hold that much blood, implying her magic increases it.
131* In ''[[https://www.fanfiction.net/s/11729865/4/Desperation-Attracts-Vultures Desperation Attracts Vultures]]'', Naruto can use his newfound [[MakingASplash control over water]] to control someone's blood if he puts enough of his chakra into their body. He uses it against Neji to break his fingers by bending them backwards.
132* In ''Fanfic/FalloutEquestria'' an [[WingedUnicorn alicorn]] crystallizes her own blood into daggers to fight Littlepip. Pip later repurposes the technique (or at least its principles) to create blood-bandages [[spoiler: for Xenith]].
133* In ''Fanfic/FateParallelFantasia'', False Saber's Noble Phantasm allows him to generate swords from his blood. They're fairly weak as far as Noble Phantasms go; but because Servants have a powerful HealingFactor, he can produce them in great numbers without risking killing himself.
134* ''Fanfic/MyBloodyAcademia'': Ryuko Matoi's Quirk allows her to control and manipulate her own blood in ways only limited by her imagination. She can form bladed weapons from it durable enough to slice through and destroy solid steel, as well as solidify it inside her body to amplify her own durability.
135* In ''Fanfic/PagesOfHarmony'', the "Boiling Blood" variant occurs during a procedure that simulates conditions in space used by Twilight Sparkle to [[spoiler: kill Fluttershy to extract Kindness]].
136* In ''Fanfic/MakeAWish'', Harry's incredibly poisonous blood (it contains Basilisk venom) protects him several times. The first, when [[spoiler:he is attacked by werewolf Fenrir Greyback, poisoning Fenrir while Harry completes the work with a silver knife]]. The second, when [[spoiler:Lord Dracula gives him blood to turn him into a vampire (the only way he won't become a werewolf) but instead stabilizes things and turns Harry into some sort of hybrid]]. The third, when [[spoiler:he gets bitten by several Australian poisonous spiders, who [[{{Pun}} bite it]] when Harry's blood enters their mouths.]]
137* ''Fanfic/TheMountainAndTheWolf'': Some of the Crow Brothers have blood made of ''insects'', which attack their enemies when wounded.
138* ''Fanfic/{{Necrophobia}}'': [[spoiler: Marion Gremory aka [[NamesToRunAwayFromReallyFast Bloody Mary]] is this, being able to shape her blood into [[CombatTentacles thick, prehensile tentacles]] due to her being a Blood God Slayer.]]
139* In ''Fanfic/PonyPOVSeries'', since Princess Cadence is the goddess of Harmony, her blood will petrify a Draconequus (beings of chaos) on contact. [[spoiler:As Queen Chrysalis is sort of a spiritual clone of Cadence, she has this ability as well.]]
140* In ''Fanfic/PowerRangersOceania'', Hine Nui has black blood that is diseased. Watching a mosquito take a snack and then die inspires her to [[MonsterOfTheWeek revive it and send it after the Rangers]], spreading her blood and its malaria-like effects.
141* In ''Fanfic/AProtectorsPride'', Urahara's bankai allows him to summon and control the blood of everyone he's ever killed. This is implied to be a ''lot'' of people.
142* In ''Fanfic/VoyagesOfTheWildSeaHorse'', the unique power that separates the [[OurVampiresAreDifferent Model Type: Vampire]] mythic zoan from the other fruits of the [[BatPeople Bat-Bat Fruit]] family is that the consumer is able to mentally shape and manipulate blood, either their own or that which is just laying around -- they can't control the blood presently inside of a person's veins. At least, not prior to [[NextTierPowerUp Awakening]], maybe. As its bearer, Nabiki Tendo, is literally learning about her powers as she goes along, we haven't seen many uses of it yet outside of creating weapons of solidified blood and launching solid blood projectiles, though presumably the "prehensile blood" option is also under its aegis.
143* In ''Fanfic/WinterWar'', once the Barragan Fragment assumes a humanoid form again, its "age things to dust" power is reflected in its blood, which becomes the "corrosive blood" variant of this trope. The characters find this out the hard way, with one of them [[spoiler:losing a hand due to blood splatter when she managed to cut it]].
144* In ''Fanfic/WithStringsAttached'', the [[DoomyDoomsOfDoom Brothers of Doom]] have a death touch, but they also have blood that will instantly kill anyone it touches, so when they expect invaders, they bleed into cups so they can throw it at people.
145[[/folder]]
146
147[[folder:Films -- Animation]]
148* ''Animation/WhiteSnake2019'': PlayedWith. While it likely wasn't his intent, after Chang Pang is [[HalfTheManHeUsedToBe cut in half by Blanca]], his [[AlienBlood demon snake blood]] is spilled all over her and his blood is seemingly so cold that it actually severely injures her when she's splashed by it, leaving her freezing for hours and she would have died if Xuan had not made an effort to warm her up via IntimateHealing.
149[[/folder]]
150
151[[folder:Films -- Live-Action]]
152* ''Franchise/{{Alien}}'':
153** In the film series, the aliens have highly corrosive blood, making it very dangerous to wound them, especially while in space, because it is very likely to eat straight through the hull. The acid blood was created for [[Film/{{Alien}} the first film]] as an answer to the problem, "Why don't they just shoot it?"
154** In later films, the aliens prove to find active uses for their acid blood. In ''Film/AlienResurrection'', two aliens kill a third to escape their holding cell. Ripley 8, who is a part-alien clone, is also shown to have acidic blood, although much less potent.
155** In ''Film/AVPAlienVsPredator'', an alien that gets its tail stinger chopped off proceeds to whip its wounded tail around and spray acid blood everywhere.
156** In the spinoff movie ''Film/{{Prometheus}}'', the snake-like creatures bleed the same kind of acid-blood.
157* The real danger from the monster in the classic kaiju film ''Film/TheBeastFromTwentyThousandFathoms'' is the prehistoric diseases in his blood that humans have no immunity to. The challenge is to kill him in a way that won't produce torrents of blood (they use a highly irradiated sniper bullet).
158* In the 1981 ''Film/{{Clash of the Titans|1981}}'', Medusa's blood melts Perseus's shield -- and not any ordinary shield, but one given to him by the gods. And as if that wasn't enough, later on drops of her blood turn into giant scorpions (possibly due to something Calibos did, but it's not entirely clear).
159* In the movie ''Film/{{Daybreakers}}'', this becomes a major plot point near the end. In particular [[spoiler:the cure to vampirism is spread by drinking blood from a cured vampire.]]
160* Hedorah from ''Film/GodzillaVsHedorah'' has blood acidic enough to dissolve Godzilla's hand to the bone.
161* The ''Series/TalesFromTheCrypt'' movie ''Film/DemonKnight'' actually features two types of blood-based attacks. In one scene, the Collector, a powerful demon, cuts his hand and spills his green blood on the ground to form a small army of lesser demons, which rise from the blood itself. But blood was also his only weakness -- specifically, the blood contained in the Key (the film's MacGuffin). That's because the Key contained traces of the blood of Jesus Christ, mixed in with that of countless Guardians of the Key. The blood was not only deadly on contact to the Collector, but the protagonists could spill the blood in doors and windows to make it impossible for demons to enter; they would explode if they tried.
162* In the ''Film/DungeonsAndDragons2000'' movie, one drop of red dragon blood turns a lake into a Bunsen burner.
163* In ''Film/MortalKombat2021'', Subzero slashes Scorpion's back, freezes the blood splurt, and uses the frozen blood to stab Scorpion in the back.
164* ''Film/PacificRim'': Kaiju blood is damn toxic, even after evaporating, and considering the sheer amount of blood a Kaiju has you can imagine the sort of cleanup hell that has to happen once one falls.
165* Blood comes alive with a taste for murder in ''Film/SpeciesII'' [[http://www.stomptokyo.com/otf/Species2/Species2.htm apparently.]]
166* Played with in ''Film/SawI'': The two unfortunate gentlemen are told that the dead body lying in the middle of the room has a high enough concentration of toxins in its blood to be deadly. [[spoiler:In fact the body isn't dead at all and belongs to the Jigsaw Killer, their captor.]]
167* In ''Film/{{Subspecies}}'', the vampire Radu's blood can spawn the titular creatures when spilled.
168* ''Film/TheThing1982'': The shapeshifting monster is capable of regenerating each severed but unburned piece of itself into a fully autonomous being. Even blood will crawl away from danger and can (if allowed) potentially [[FromASingleCell respawn into a full-grown monster]]. The characters use it as a foolproof method for telling them apart from the humans they're otherwise mimicking perfectly. Systematic testing of the entire base personnel and electrocution of the failures with an overclocked cattle-prod follows, forcing the remaining monsters to declare themselves on the spot.
169* ''Film/TokyoGorePolice'': The "Engineers" can make weapons emerge from any wound they suffer, and there's a drug that can let a person spray blood with enough pressure to use it as a means of propulsion.
170* ''Film/VampireGirlVsFrankensteinGirl'': The eponymous vampire girl can turn her blood into blades, spikes, and even serrated wheels.
171* In ''Film/X2XMenUnited'', Mystique smuggles metal into the government's plastic prison (where Magneto is being held) by injecting a security guard with some sort of iron-rich solution.
172[[/folder]]
173
174[[folder:Gamebooks]]
175* ''Literature/LoneWolf'':
176** In ''The Kingdom of Terror'', if you press the attack against the Dakomyd, its watery blood splashing on Lone Wolf's arm burn through his tunic and sear the flesh, as well as corroding the weapon.
177** In ''The Deathlord of Ixia'', a Lencian soldier strikes [[https://www.projectaon.org/en/xhtml-less-simple/lw/17tdoi/ill16.png an undead Cabalah]] with a sword, which only results in a splash of corrosive blood corroding the weapon and reducing his hand to a stump.
178[[/folder]]
179
180[[folder:Literature]]
181* Mirai from ''Literature/BeyondTheBoundary'' has "cursed blood"; as well as being highly corrosive, she can form it into a sword with which to attack. However, [[BlessedWithSuck due to these powers]], she is treated as "cursed" and ostracized by her fellow youmu hunters; there's also the risk of her losing too much blood and passing out.
182* Granny Weatherwax from ''Literature/CarpeJugulum''. [[spoiler:There's really not more to it than that: she uses blood as a weapon, and the weapon is her. Well, the blood is a delivery system...]]
183* In ''Literature/TheChroniclesOfAmber'', Amberites can make Pattern Ghosts real with their blood. The blood of any descendant of Dworkin can also damage the [[CosmicKeystone Primal Pattern]], which hold Amber and the Multiverse it spawns together. Bad Things Happen when an Amberite bleeds on that Pattern. The Chaosites, on the other hand, have blood that bursts into flame on contact with air. For Merlin, a Chaosite/Amberite hybrid, whether he bleeds fire or blood depends on whether the shadow reality he is in is nearer to Amber of Chaos.
184* Bora Horza Gobuchul, the changeling protagonist of the [[Literature/TheCulture Culture]] novel ''Literature/ConsiderPhlebas'', can makes his own blood and saliva highly poisonous, so guess what happened [[spoiler:when the leader of a cannibal sect tried to eat him]]
185* There was a Weaponized Blood of Mass Destruction version in Creator/CharlesSheffield's last novel, ''Dark as Day''. [[spoiler:A character carries {{nanomachines}} in his bloodstream that, when dropped into a gas giant, will shift high-pressure hydrogen into a denser configuration, collapsing the planet and releasing a big enough burst of energy to [[ApocalypseHow destroy civilization]].]] [[spoiler:The character also has [[ManchurianAgent mental programming]] to seek out an opportunity to dive into a gas giant...]]
186* In ''Literature/CursedWorld'', the Ferromancer who serves as the mysterious atagonist f the first book murders a cop by manipulating the iron molecules in the cop's blood to form a crystal that stabs him to death from the inside.
187* Witch's blood is deadly poison in the ''Literature/EverWorld'' books, though I don't believe it ever gets used against people. They just hold a very important plant hostage.
188* ''Literature/FateRequiem'': Erice Utsumi can turn her blood into bullets and weapons like axes. Her blood is also toxic to Servants and when she kills them with it, the blood absorbs and dissolves their spirits.
189* ''Literature/ForestKingdom'': In the ''Hawk & Fisher'' spinoff series' book 2 (''Winner Takes All''), one of the assassination attempts on Reform candidate James Adamant involves a monster ''made'' of blood.
190* Marshal Atkins, from Creator/JohnCWright's ''[[Literature/TheGoldenOecumene Golden Age]]'', has the Blood Horrors type: intelligent nanites that can poison or corrode, as ordered.
191* In ''Literature/TheGolgothaSeries'', the villain Phillips is nearly invincible, but Mutt is able to harm him using a knife coated in Mutt's own blood. This due to Mutt's blood carrying the spiritual power of his father, [[spoiler:the god Coyote]].
192* ''Literature/GrimoiresSigil'': Harper's specialty is in blood magic, which she uses to easily dispatch the Kesterline mages holding her hostage due to Sebastian choosing to leave her alone, but can also be used to heal by using it to clot wounds.
193* ''Literature/LegacyOfTheDragokin'': Fury can use the Prehensile variety; she uses her blood as whips and spears.
194* In the ''Literature/NewSeriesAdventures'' novel ''Forever Autumn'', the Doctor temporarily disrupts the antagonists' biological ship by smearing a drop of his blood over one of its surfaces. Later on [[spoiler:he threatens to overwhelm the ship completely by slitting his wrists all over the floor]].
195* ''Literature/OldMansWar'':
196** Enhanced human soldiers have their natural blood replaced with [[AlienBlood SmartBlood]], composed of {{nanomachines}}. While not explicitly intended as a weapon, in ''The Ghost Brigades'', Jared Dirac discovers that it is possible to remotely instruct the nanobots to explosively combust once outside the body. He uses this technique to momentarily stun an attacking alien after his tongue is cut during combat. Later on, it is revealed that the [=SmartBlood=] can also [[spoiler:be ordered to ignite while still in the body, which he does when the villain is about to [[GrandTheftMe take over his body]]]].
197** In ''The Human Division'', another CDF soldier is able to use this tactic [[spoiler:while being restrained and interrogated]].
198* The oldest of Creator/AnneRice's vampires have the Boiling Blood variety, called the Killing Gift. This is essentially how [[BigBad Akasha]] kills most of the world's vampire population in ''[[Literature/TheVampireChronicles Queen of the Damned]]''; she ignited their highly flammable changed blood and set them on fire from the inside out. The power later got {{retcon}}ned into two separate abilities, with the Killing Gift not really being detailed but assumed to make ruptures in the victim's cardiovascular system.
199* In ''Literature/{{Renegades}}'', Ruby, known better as the superhero Red Assassin, can crystallize her blood into weapons, which she uses to fight.
200* Naofumi has a spell in ''Literature/TheRisingOfTheShieldHero'' granted to him by [[EvilWeapon the Rage Shield]], "Blood Sacrifice". [[CastFromHitPoints By expelling enough of his own blood,]] it summons a terrible maw to appear and bite down on his victim before dragging their bloodied corpse into a pool of bubbling blood.
201* ''Literature/SaintessSummonsSkeletons'': Astelia's version of the vampiric [Blood Curse] racial skill causes her spilled blood to burst into flames that burn more intensely than normal fire. Together with her abnormally large health pool and [Greater regeneration] passive skill, Astelia has the option of cutting ''herself'' and using space magic to [[KillItWithFire launch the blazing blood at her enemies]], although we've only ever seen her employ this strategy against monsters capable of [[PullingThemselvesTogether reforming even after being torn to pieces]].
202* The scabmettlers of Creator/ChinaMieville's ''Literature/TheScar'' are a race whose blood clots extremely quickly. Before going into battle, they cut themselves in certain ritualistic pattern, and the results blood flows harden into armor and weapons.
203BlessedWithSuck to some extent, since they need to medicate themselves constantly or risk spontaneous clots that will turn them into statues. It does, however, come in handy when Armada needs to send a delegation to the island of the Mosquito People.
204* In ''Franchise/StarWarsLegends'', the voxyn, Jedi-hunting beasties created by the Yuuzhan Vong, have blood that becomes a deadly neurotoxin in most kinds of air... so even if you kill the thing without being bitten/clawed/spat acid on/hit with tail spines/eardrums burst by screech... you might still be screwed.
205* Sanguine from ''Literature/SuperMinion'' has control over blood. He can bleed himself for a weapon to attack with, and can also bleed an enemy dry from the slightest wound.
206* In ''Literature/SwordArtOnline'', during ''Alicization Uniting'', when Eugeo's Blue Rose Sword snaps in half, he uses Incarnation to reforge the blade using how own blood so that Kirito can use it. The new sword is red in color and is christened the Red Rose Sword.
207* In ''Literature/TheSwordOfTruth'', there is a scene where Richard kills some monster, and a drop of its blood on his arm requires later treatment. As it dies, the monster transforms into a mass of snakes. Richard kills a few snakes, and ''they'' transform into bugs, whose bites must also be treated.
208* In the ''Literature/TakeshiKovacs'' series, where people are capable of downloading their consciousness into new bodies, one of the custom modifications available is blood loaded with deterrent-toxins. In ''Broken Angels'', Luc Deprez recounts how he successfully assassinated a target, only to die afterwards when the target's blood turned out to be a slow-acting poison.
209* In the Creator/BarbaraHambly novel ''Literature/ThoseWhoHuntTheNight'', a [[spoiler:vampire]] character kills a vampire by injecting himself with a lethal dose of silver nitrate (silver being fatal to vampires in this setting) and allowing the vampire to drain him before he succumbed to the toxic effects of the silver nitrate.
210* ''Franchise/TolkiensLegendarium'': Creator/JRRTolkien's dragons have poisonous blood, corrosive and/or blazing hot; if you have the guts to sword a dragon's belly, chances are that you will be killed by it, or at least disfiguringly burned/scalded.
211* In the ''Literature/TortallUniverse'', [[GiantSpider spidrens]] have acidic black blood, as Daine finds in ''Literature/TheImmortals''. Downplayed in this case, though. Getting splashed with spidren blood burns, but the injury it causes is pretty minor.
212* One guy in ''Literature/TrinityBlood'' has blood that instantly combusts when it comes it contact with air. The main character can also make a scythe out of his while in his SuperMode.
213* ''Franchise/Warhammer40000ExpandedUniverse'':
214** Duke Venalitor from the ''Literature/GreyKnights'' novel ''Hammer of Daemons'' has the ability to make any shed blood into prehensile tendrils.
215** In the ''Literature/ThousandSons'' novel ''Ahriman: Exile'', Ahriman kills a minor Chaos Lord by magically destroying the chemical bonds which hold his blood cells together. The results aren't pretty.
216* Myrddraal blood in ''Literature/TheWheelOfTime'' series will corrode the metal if not cleaned. Other types of shadowspawn have the same effect, only faster so their blood needs to be cleaned immediately.
217* ''Literature/{{Worm}}'': Hemorraghia's power lets her form weapons and shields out of her own blood. Injuring her is likely to backfire.
218[[/folder]]
219
220[[folder:Live-Action TV]]
221* When Angelus gets loose in ''Series/{{Angel}}'', Wes and Faith take him out by using Faith's blood against him. They know Angelus won't be able to resist trying to turn a Slayer, so they inject Faith with a dangerous hallucinogen just before the fight, then let him win. It's a big risk, but it works -- Angelus is unconscious long enough for Willow to restore his soul. The downside is that Faith then has injuries from her fights with Beast and Angelus, a drug overdose, ''and'' blood loss that Angelus drank.
222* Werewolf blood is toxic to vampires in ''Series/BeingHumanUK''. George exploits this in one episode by biting his own wrist and forcefeeding his blood to a vampire, killing it.
223* In ''Literature/LessonsForAPerfectDetectiveStory'' one episode was all about trying to discover what the weapon was, as there was absolutely clue as to what it could be. In the end, it was revealed that the murderer, who had access to blood bags at the hospital he worked at, froze some blood of the same blood type and stabbed the victim with it, which would eventually melt and get lost amongst the victim's blood. [[spoiler:This was subverted when it turned out the victim had fallen off the roof and stabbed himself in the chest with his own shin bone.]]
224* ''Series/DarkAngel'''s second season featured a plot arc based on Max's DNA having been altered to be poisonous to Logan on contact. Not blood, exactly, but any secretions would have the same effect.
225* ''Series/TheFlash2014'': Bloodwork's main power is controlling blood, which he is able to shoot out.
226* In the ''Series/{{Haven}}'' episode "Bad Blood", when Mike Gallagher's blood is shed, it gains a life of its own. It starts out as a few drops, but it can drain a person's blood completely through skin contact and add the stolen blood to its own mass. It can travel along the ground and even through water or sewage without getting diluted or contaminated and does not leave any residue behind. Mike had no control over it.
227* In ''Series/{{Oz}}'', Simon Adebisi steals blood from the AIDS ward, and uses it to [[spoiler: infect Antonio Nappa via a hypodermic needle stick]].
228* ''Series/UltramanTaiga'' introduces a new monster, Segmeger, a [[PoisonousPerson poison-based kaiju]] whose venom extends to it's purple blood. While fighting Ultraman Titas the monster uses it's blood as a weapon to momentarily blind the Ultra.
229* When the alien hybrids from ''Series/TheXFiles'' are injured, their green AlienBlood bubbles and releases some kind of toxic gas or something. It is also both corrosive and lethally infectious. Putting the victim on ice can slow the effects, and a course of antiviral drugs can remove the infection.
230* The Boys (2019): There is a unknown character with the ability to blow off limbs and heads known as "the head popper".
231* Gen V (2023): Main character Marie Moreau has the ability to manipulate and control her own blood as well as others. Although Marie has to harm herself to use her own as a weapon, she can use any in close proximity to her. She can use it as a weapon, and to stop someone from bleeding to death.
232[[/folder]]
233
234[[folder:Music]]
235* One of the titular "Warriors of Time" in the music video for the song by Music/BlackTide seems to have this power. He even creates a tidal wave of blood that floods into the enemy giant robot, making it explode.
236* The [[WesternAnimation/{{Metalocalypse}} Dethklok]] song "Bloodrocuted" tells the story of an electrician being chased through the woods by bounty hunters because he [[CriminalDoppelganger happens to be a wanted criminal out there who looks just like him]]. He leads them to an electrical substation, where he manages to kill the bounty hunters by cutting himself and electrifying a puddle of his own blood for them to step in. [[spoiler:Then he dies because he can't stop his cuts from bleeding.]]
237[[/folder]]
238
239[[folder:Myths & Religion]]
240* In Myth/ClassicalMythology Nessus was a centaur killed by Hercules for trying to rape his wife, but Nessus somehow convinced Hercules's wife that his blood was a love potion, so one day she smeared it on his shirt. Hercules was poisoned by the shirt and in agony from the non-fatal corrosion, immolated himself to end the pain. However, the centaur's blood itself wasn't the poison -- the arrow used to kill Nessus was one of those that Hercules had poisoned with the blood of the Hydra of Lerna, one of the monsters that he slew during his Twelve Labors, and the hydra's blood was mixed with that of Nessus.
241* OlderThanDirt: In ''Literature/EnumaElish'', the Mesopotamian creation myth (ca. 1600 BCE, maybe), the evil mother goddess Tiamat gives birth to dragons that, among other awesome features, have "venom for blood". Bad-ass.
242* The Asura Raktavija could regenerate [[FromASingleCell from a single drop of blood]], therefore requiring Kali to drink all of his blood before he could be killed once and for all. In other versions, she strangled it.
243* Another myth included a monster who would spawn mooks from his blood whenever wounded. Unable to beat him, Durga transformed into Kali, who promptly solved the problem by eating him whole.
244* The dragon Fafnir of Myth/NorseMythology had corrosive blood in some versions of the story, and this required Sigurd to dig a pit to catch the blood in order to avoid being killed by it. (In other versions, the blood was not corrosive and indeed conferred invulnerability on Sigurd when he bathed in it.) Some have a bit of both; though [[BloodBath bathing in the blood]] made him invulnerable it felt like bathing in HollywoodAcid.
245* The European [[BasiliskAndCockatrice basilisk]] was a creature so vile, in addition to its venomous bite and habit of causing people to drop dead just by looking at it, also had blood that was so toxic, if a man stabbed it on horseback, the poison would radiate through his weapon, killing not only the man but his horse.
246* In some versions of the story, the blood falling from Medusa's severed head dripped down into the Sahara desert over which Perseus flew, transforming into venomous snakes. In other versions, {{Pegasus}} sprang from it, and in still more, her blood petrified Atlas and turned seaweed into red coral. Really, there wasn't a lot it ''didn't'' do.
247[[/folder]]
248
249[[folder:Roleplay]]
250* ''Roleplay/DawnOfANewAgeOldportBlues'':
251** Part of Daigo's vampiric powerset is the ability to control his own blood, which he can shape into weapons once it leaves his body. On top of that, his blood can turn other people into monsters if they ingest it.
252** Devin's blood is acidic, meaning he can use his acid manipulation power to control it and cause corrosive harm. When he first displays his power, he shapes his blood into a dagger to attack Hyeon with.
253* ''Roleplay/SurvivalOfTheFittest'': Evolution's Taryn Gregory has her blood crystallize into sharp shards under exposure to oxygen, which can be broken off from the wound and used as a weapon.
254* In ''RolePlay/WeAreAllPokemonTrainers'', Constantin, a villainous psychic, can use telekinesis to form his exposed blood into a whip as a desperation weapon.
255[[/folder]]
256
257[[folder:Tabletop Games]]
258* In addition to being CastFromHitPoints, the [[BigScrewedUpFamily Whateley clan's]] Blood Magic in ''TabletopGame/{{Deadlands}}'' has a number of spells that bolster the caster's abilities. For instance, in exchange for letting [[TheLegionsOfHell dark powers]] devour some of the Blood Mage's tasty, tasty essence, the spellslinger might get InstantArmor. In exchange for actually doing their bodies overt physical harm, they might recover some of the game's version of {{Mana}}. (In case you're not getting the idea, that last ability is called [[DealWithTheDevil "Faustian Deal"]])
259* ''TabletopGame/DungeonsAndDragons'':
260** ''TabletopGame/ForgottenRealms'':
261*** The spell "Blood Lightning" remains indefinitely as a "curse"; after bloodletting begins, the subject can choose whether to receive a weak healing or sweep everything else around with red lightnings discharged from wounds.
262*** Also, Chosen of Mystra tend to bleed "Silver Fire", a form of raw magic. In the fall of Myth Drannor a colonel of Army of Darkness caught overconfident Khelben (then "Nameless Chosen") and tried to tear him in half -- he almost succeeded, but ended up completely obliterating himself and everyone nearby... while Khelben survived (barely).
263** In 3e and 3.5e, the Blood Magus prestige class is entirely built around blood-based abilities, including stepping into one creature with blood and out another, and granting temporary sentience to an enemy's blood, which then proceeds to attempt escape. Painfully.
264** D&D 4e features a defensive use in its magic Bloodcut Armor, which allows a sufficiently injured character to ignore a certain amount of further damage when it is active.
265** According to the ''Fiendish Codex: Tyrants of the Nine Hells'', every drop of Asmodeus' blood that falls to the ground turns into a pit fiend.
266** Spells:
267*** 3.5e ''Spell Compendium'' includes a spell that causes the victim's veins to escape from it. Appropriately it requires a save against instant death, and even if that succeeds the person takes massive damage and ''then must untangle their own entrails in order to escape''.
268*** Related to this is the 3.5 Assassin spell ''heart ripper'', which, if the target fails a save vs death, ''blasts the target's heart out of their back''.
269*** The spell ''fire in the blood'' from ''Heroes of Horror'' makes the spilled blood of the subject turns into an acid spray that unrelentingly hit the one that spilled it in melee.
270*** The draconic spell ''burning blood'' (from ''Draconomicon'') is similar, causing a spray of blood around the caster whenever hit by weapons, which causes energy damage of the same type as its BreathWeapon.
271** In 5e, there's a variant rule for demons that can let them have venomous insects for blood. The first time such a demon drops below 1/2 hitpoints in a battle, a swarm of wasps appears next to it and begins attacking its enemies.
272* ''TabletopGame/{{Exalted}}'':
273** The spell Flying Guillotine takes blood from an already open wound and turns it into a blade that flies across the battlefield, decapitating people.
274** The Abyssal Exalted are able to extrude chains of their own blood to use as weapons or just tentacles. On a side note, one of their martial arts specializes in whips, chains and bondage. [[{{Squick}} Yes, they're compatible.]]
275** One set of Green Sun Prince charms allow them to control liquid. This include spilled blood, and there are tons of it on the battlefield. A BlobMonster made of blood is one of the nastier things they can sic at their enemies.
276** Dragon Kings who walk the Coagulated Eucharist Path can learn to, in order, drink other creatures' blood to gain Essence, learn the desires or fears of those whose blood they drink, extend whiplike tentacles of blood from their own wounds, place those grappled by such a tentacle under magical control, and grant enhanced healing and disease resistance to those who drink their blood with the caveat of being able to cause them harm or intoxication at the blood giver's whim.
277* In ''TabletopGame/FabulaUltima'', the villainous vampire Carmilla can attack with swords made of blood in her first phase. She loses this ability in her second phase but gains an offensive "Bloodchill Wave" spell in its place.
278* Creator/GamesWorkshop games:
279** The siege rules for previous editions of ''TabletopGame/{{Warhammer}}'' had the Dark Elves poured boiling blood rather than boiling oil upon their opponents. While not as dangerous in damage potential it had psychological effects on the opponents.
280** ''TabletopGame/{{Mordheim}}'':
281*** One of the spells was available to Magisters of the Cult of the Possessed is "Dark Blood" and literally consisted of the caster slashing open a palm and showering an enemy with blood, which bursts into flame in mid-air. And then testing to see if you collapse from blood loss.
282*** The blackblood mutation, available to {{Mutants}} and [[DemonicPossession Possessed]] of the Cult of the Possessed warbands, transforms the model's blood into a highly corrosive substance that burns anyone in close proximity whenever they suffer damage as the tainted blood spurts from the wound.
283** ''TabletopGame/WarhammerFantasyRoleplay'':
284*** In the previous edition, trolls were very dangerous to kill because of their stomach acid. Infamously voracious and able to digest everything short of magic items, they had oversized stomach filled with very potent acid. If one was killed with a critical hit to the torso, his belly would burst, dealing massive damage to anyone standing too close.
285*** The Blood Substitution Chaos mutation turns a character's blood into another substance. Some of the possible substitutions (e.g. acid, molten metal, mice) can inflict damage on enemies when they wound the character. Apparently you can survive being the victim of this mutation because Chaos Did It.
286** In ''TabletopGame/WarhammerAgeOfSigmar'', one of the rewards that a champion of Tzeentch can gain using the Path to Glory campaign rules is for their blood to be transmuted into a strong acid that will wound his enemies whenever the champion takes damage.
287** ''TabletopGame/Warhammer40000''
288*** It is mentioned that Astartes blood is toxic, either made that way intentionally, or as a side effect of their many, many, MANY alterations to make them superhuman. This is hardly an unexpected trait for inhuman SuperSoldiers who also secrete acid saliva and are capable of eating a healthy diet of, among other things, concrete and metal.
289*** Some [[MagicKnight Librarians]] of the [[OurVampiresAreDifferent Blood Angels]] Astartes Chapter and their successor chapters are able to boil the blood in their enemy's veins and cause it to explosively burst from their pores. In-game this is represented by the Sanguinary Discipline PsychicPower [[ExactlyWhatItSaysOnTheTin Blood Boil]] that could instantly kill the target[[note]]in 7th Edition[[/note]] or cause multiple [[UnblockableAttack mortal wounds]][[note]]in 8th Edition[[/note]].
290*** In an older edition of the Tyranid codex, some large Tyranid beasties could buy "acid blood" as an upgrade. When killed they would damage nearby units.
291*** The Heretic Astartes who, in addition to being supersoldiers, worship gods that give mutations as gifts, and thus have some bad stuff in their blood. Specifically Noise Marines, whose blood is most likely about 50% combat stimms (many of which are probably not too healthy for a normal person to touch), or Plague Marines, whose blood is full of many, many horrific diseases.
292* ''TabletopGame/LegendOfTheFiveRings'':
293** Maho-tsukai, or bloodwitches, who use their specific magic discipline is fueled by blood, sometimes their own (but usually those of unwilling victims), to accomplish all 5. They are ALWAYS evil, in this morally gray setting.
294** One particular type of Oni has flaming blood, and anyone who strikes the Oni with a sword must dodge to avoid being set on fire.
295** Being exposed to the blood of [[TheCorruption Tainted]] creatures almost always carries the risk of becoming Tainted.
296* ''TabletopGame/NewWorldOfDarkness'':
297** [[BloodBath Blood Bathers]]: Immortal people who become... [[ExactlyWhatItSaysOnTheTin immortal by bathing in people's blood]]. Besides being a sterling example of ImmortalityImmorality -- even moreso than the soul-eating Tremere Liches -- they often gain powers over blood by virtue of it.
298** Similarly, if the Stigmata Key from ''TabletopGame/GeistTheSinEaters'' doesn't deal with ghosts, then it deals with blood, usually in this sense. Some uses include the Stigmata Curse (which causes a person to bleed constantly from their fingernails for days), the Stigmata Caul (which allows a Sin-Eater to move their blood, detach their arm and remote control it, and create a miniature blood homunculus) and the Stigmata Rage (which not only hurts someone with pure ghostly force, but makes sure their wounds won't close easily).
299* ''TabletopGame/OrbisAerdenReignOfTheAccursed'': All the [[OurVampiresAreDifferent Godspawn]] bloodlines need Haema (blood) to survive and power most of their inherent abilites, but the aristocratic Vorkai take it a step further. Their specific bloodline power allows them to manipulate the blood in other creatures' veins from a distance and even create weapons and armor from it. The most powerful users can even use their own blood to create semi-intelligent blood golems to fight for them.
300* ''TabletopGame/{{Pathfinder}}'':
301** A heavily downplayed version of this with the Angelic Blood feat, which only aasimar (people with celestial heritage somewhere in their recent family history) can take. The feat represents their blood being infused with the holy power of their ancestor, which in addition to some minor resistances results in any undead or being with the evil descriptor (such as demons or devils) adjacent to them take 1 point of damage whenever the aasimar suffers damage that is specifically related to blood (hitting you with a sword is not enough, but hitting you with a sword that causes you to bleed enough to take further damage from that ''is'').
302** There are also several spells that weaponize a creature's blood, such as Blood Blaze and Caustic Blood (the target's blood damages nearby creatures when spilled), and Blood Boil (boils the target's blood, dealing a severe amount of damage).
303* ''TabletopGame/TheUnofficialHollowKnightRPG'':
304** The Bloodboil spell causes blood-soaked weapons to burst into flame, making those weapons deal bonus fire damage. It can also be cast directly on a creature to damage them if they are also covered in blood.
305** The Toxic Blood trait makes a bug's blood caustic, spraying out at any enemy that damages them to inflict a damaging status effect.
306* ''TabletopGame/VampireTheMasquerade'':
307** There are quite a few Disciplines that allowed the player to weaponize blood. The Assimite Discipline, Quietus, had a power that allowed the user to turn their blood into a deadly acid, and the Tremere Discipline of Blood Thaumaturgy allowed them to control another person's blood (up to and including ''boiling it''). The Tzimisce, meanwhile, could ''turn themselves into blood'', and at a higher level than ''that'' could make the blood in their veins acidic -- while this made it impossible to create new vampires or ghouls, effectively rendering htem sterile, it also rendered diablerie (soul draining) next to impossible as well (which, given that a vampire that powerful was likely very, ''very'' old, was quite important to ensure).
308** The Kuei-jin have Blood Shintai, essentially a grab-bag of all of the above, from making their own bodies constrict or swell, creating whips of blood, or turning others' blood into poison.
309* In ''TabletopGame/VampireTheRequiem'', the Norvegi have a discipline that allows them to mod their own bodies and craft their crystallized blood and bones into blades or armour. At the highest level they cause blood in their bodies to erupt into spikes that shoot out in all directions, impaling anyone nearby. It is also noted to hurt the using vampire as hell (unless a critical success is obtained) and destroys their clothing.
310* ''TabletopGame/WorldTree'' Inverted. The core rulebook has an available flaw a character can take that makes the character's blood burst into flames if exposed to excess oxygen. Carrying oxygen for respiratory purposes is fine, but bleeding causes it to light up. The reason this is an Inversion is characters that take it are not immune to the fire. Anything that draws blood will also burn. Because stone and metal are too rare to use as weapons, anyone with a sword that drew blood now has a sword that can draw blood and is on fire.
311[[/folder]]
312
313[[folder:Video Games]]
314* ''VideoGame/AgeOfMythology'':
315** In the ''Titans'' expansion, there are the Lampades nymphs (Hecate's myth unit). When they are killed, they explode in a spray of yellow-green blood. Normally, it's not harmful, but if you [[YouRequireMoreVespeneGas shell out the resources]] for the right improvement...
316** The Egyptian [[BigCreepyCrawlies Scarab]] also can hurt units with its blood when defeated.
317* The final boss of ''VideoGame/AlisiaDragoon'' fires blood 'bullets' from his exposed heart at the heroine.
318* ''VideoGame/BatmanArkhamCity'' has ComicBook/TheJoker [[spoiler: inject Batman with his own, TITAN infected blood, which would have killed him in under ten hours, had it gone untreated.]]
319* ''VideoGame/{{Arknights}}'':
320** Dikaiopolis got his title of Blood Knight for a reason: His Originium Arts lets him manipulate blood to create weapons or to forcibly exsanguinate an opponent.
321** The current Sanguinarch - leader of the Vampire Sarkaz - is a master of blood Arts, with his known feats ranging from parasitic blood that creates mooks upon death to disintegrating groups of people and leaving nothing behind. For bonus ''Franchise/{{Castlevania}}'' reference, Episode 13 reveals that his actual name is [[spoiler:Dracul, the Crimson Prince]].
322* One of the enemies in ''VideoGame/BioHazardBattle'' is a ''heart with spider legs''. It shoots out blood cells that home in on you.
323* ''VideoGame/BlazBlueCentralFiction'' gives us [[CanonImmigrant Naoto Kurogane]], whose Drive, "Bloodedge" allows him to make weapons out of his own blood.
324* Blood is weaponised in a variety of ways in ''VideoGame/TheBindingOfIsaac'' by both the player and enemies, from simply firing globs of blood instead of tears to creating damaging pools of blood to firing laser-like geysers from whatever orifice they have available.
325* Surprisingly uncommon in ''VideoGame/{{Bloodborne}}'', considering how prominent blood is in the game, but it does pop up a couple of times. Queen Yharnam uses her blood as a weapon in her fight, either by spraying toxic blood or by fashioning blades out of it. In the Old Hunters DLC, Maria also powers up her swordplay with blood magic in her battle, which she learned from the Cainhursts.
326** The player can get in on the action with the Chikage, a Cainhurst weapon that's halfway between a cavalry sabre and a katana. Its trick weapon mode involves magically coating its blade in your blood, draining your health over time but slightly boosting your attack range and massively boosting your damage.
327** And then there's ''Bloodletter'', a spiked mace that the user can turn into a giant morningstar by ''impaling themselves straight through the heart''. The supernatural effects of the weapon mean this only damages them once instead of killing them, and the result is a ball of crystallized blood and guts. There's even a special transformation attack where the user turns their back to the opponent and then stabs themselves so the end of the morningstar ''bursts out of their back'' and into the surprised opponent.
328* The Carpathian Dragons from ''VideoGame/BloodRayne 2'' are handguns which use blood instead of bullets. Rayne can refill them by stabbing them into enemies, or use [[EmergencyWeapon her own blood]] in a pinch.
329* ''VideoGame/BloodstainedRitualOfTheNight'': Boss and [[PromotedToPlayable playable character]] Bloodless the vampire uses blood to attack with, doing everything from creating umbrellas (and her dress) from blood to unleashing massive tornados and rains of blood for massive pain.
330* Unlike his original ''Franchise/{{Castlevania}}'' counterpart, Dracula in ''VideoGame/CastlevaniaLordsOfShadow'' timeline controls his own blood to form a whip as main weapon. He can also turn his blood into projectiles or even the [[BadassLongcoat elaborate]] [[NoShirtLongJacket longcoat]] he's seen wearing most of the time.
331* Sgt. Billie Church from ''VideoGame/CliveBarkersJericho'' is a blood mage. And a {{ninja}}.
332* Jedah Dohma from ''VideoGame/{{Darkstalkers}}'' fits into this. All of his EX attacks involve turning his blood into a mass of giant hands to grab and abuse his opponent. Or he can rip his head off and spray his enemies with the blood from his wound.
333* In ''VideoGame/DeathStranding'', the many [[OurGhostsAreDifferent Beached Things]] that stand in your way react very poorly to Sam's body due to his status as a "repatriate" ([[ResurrectiveImmortality someone who's able to resurrect from death]]), so throughout many points in the game, Sam stock ups on forming anti-BT weapons [[AbnormalAmmo coated with his bodily fluids]], from shower water, urine, feces, and most prominently, his blood. This sometimes works as a handy way to stabilize difficulty following a rough encounter as it means Sam can come better equipped for the next one, but this also means that sometimes, [[CastFromHitPoints the player will have no choice but to sacrifice some blood voluntarily]] to deal with something expected to be really big.
334* ''VideoGame/DeepRockGalactic'': Played with the Glyphid Septic Spreader, which doesn't shoot the usual blood per se, but fires globs of corrosive sepsis that make hazardous puddles. According to the Miner's Manual, that stuff is actually pus, aka infected white blood cells.
335* Lord Erebus of ''VideoGame/{{Demigod}}'' has an upgrade that turns his blood to poison, increasing his health regeneration and dropping a poison potion on death that damages, rather than heals the collector.
336* ''VideoGame/DevilMayCry5'' has Dr. Faust, which gives Dante some control over Red Orbs, AKA crystallized demon blood, which he can use to both deal damage to enemies by throwing the orbs at demons, or make enemies he attacks drop more orbs when hit. Red orbs are also used to buy new abilities and items in the shop, which makes it double as AbnormalAmmo and MoneyMauling.
337* ''VideoGame/DiabloII''[='=]s Necromancer has the Blood Golem skill as part of his [[MookMaker Summoning]] skilltree.
338* In ''[[VideoGame/Disgaea4APromiseUnforgotten Disgaea 4]]'', one of the succubus' magichange attacks has her strip in front of the party member [[ItMakesSenseInContext that was wielding her]], resulting in a massive {{Nosebleed}} that damages, if not outright kills enemies in front of said party member.
339* ''VideoGame/DivinityOriginalSinII'' features Voidwoken enemies, whose blood is cursed. Killing them will create a Cursed Blood surface (which applies [[ReviveKillsZombie Decaying]]), or if the Voidwoken was already on top of a surface, its blood will end up cursing it (or turning it back to normal if the surface was blessed).
340* [[BloodKnight Sacriers]] from ''VideoGame/{{Dofus}}'' can use their blood to drag enemies towards them.
341* Bloodseeker in ''VideoGame/{{Dota 2}}'', as his name suggests, utilizes a lot of blood magic to devastate his enemies, starting from inducing blood lust to empower his target at a cost, spraying an area with blood to eventually silence his enemies, and also flaying the enemy alive, causing blood to gush around them and damaging them further if they walk.
342* In ''VideoGame/DragonAgeOrigins'', the Blood Mage specialization allows a mage to use his own blood ([[CastFromHitPoints as represented by HP]]) to cast spells instead of mana. They can also boil their enemies' blood in their veins, paralyzing and injuring them. Or any mage can gain the Power of Blood ability to drain their hit points to replenish their magic rather bloodily if they pick the Dark Sustenance ability from the Warden's Keep expansion.
343* The Berserker subclass of ''VideoGame/DungeonFighterOnline'' has several skills that inflict the bleeding status. The ultimate attack of the Hellbringer, an awakened Berserker, involves summoning a sword made of his own blood. Their second awakening, Blood Evil, learns to explode their blood which [[DesperationAttack does more damage the less HP they have]], create a giant orb of blood to crash down on enemies and turn into a giant demon made out of blood to attack their enemies.
344* The tool of the trade for Blood Assassins in ''VideoGame/DungeonSiegeII: Broken World''. They have both the Bloodsoaked Shots passive ability (which increases damage at the cost of health) and the Ravaging Strike ability, which causes a large amount of damage that drains 40% of the user's health, and with the correct upgrade, it can set the target on fire.
345* ''VideoGame/DwarfFortress'':
346** The new version includes randomly generated "forgotten beasts" (and other similar creatures) which occasionally have poisonous blood. Dwarves can't be bothered to clean up blood, instead tracking it all over the place and causing the entire fortress to be infected. HilarityEnsues.
347** There are also subterranean creature called "blood man": human shaped and sized being made entirely of blood. They're far less intimidating than they sound though, as being made of liquid makes them too soft to damage anything and they're torn apart by pretty much any attack.
348** In addition, in adventure mode you can pick up blood from the floor and, like nearly all items, throw it. If your character has high enough strength and throwing skill the flying blood can fracture bones.
349* Pretty much anything to do with Mohg and the Formless Mother from ''VideoGame/EldenRing'' uses blood as a weapon - either the Formless Mother's, or the user's. This can include cutting yourself to shoot a stream of blood at your opponent, or cutting the Formless Mother to manifest burning blood, among other tricks.
350* Ikumi Amasawa of ''VideoGame/EternalFighterZero'' uses her own blood as well as the blood of her victims for her special attacks, such as plunging her own blood into the ground to call forth an erupting fountain of blood.
351* [[DemonicSpiders Feral Ghoul Reavers]] in ''VideoGame/{{Fallout 3}}'' (only appearing when ''Broken Steel'' is installed) throw gobs of explosive, radioactive gore as a ranged attack.
352* ''VideoGame/FateGrandOrder'': Queen Medb regularly has sex with men. She can somehow store their genetic material in her body. Then when she spills her own blood on the ground, soldiers emerge from each drop, each her sons.
353* The main bosses of ''VideoGame/GrandiaII'' are the parts of Valmar (read: Satan) -- individual representations of a demonic entity's anatomy. Valmar's Heart is just that: a giant, floating heart which spews blood from its open arteries.
354* ''VideoGame/GreyArea2023'': The third boss, the Goddess of Ichor, can weaponize her own blood. One attack causes a blood vortex which rains droplets from above, and another has her rip her own arm off to attack with the arterial spray.
355* ''VideoGame/GuildWars'' has Necromancers, which have an entire skillset (blood magic) devoted to this. And even many of the skills outside of blood magic still require [[CastFromHitPoints sacrifice of life points]] to operate.
356* Testament from ''VideoGame/GuiltyGear'' has a [[SinisterScythe scythe]] made out of their own blood. Their sprite shows that there's a hole in their hand that they draw the blood out of. One of their special moves involves cutting themselves and forming a web out of the blood spray, to trap their opponent.
357* One of the Hydra units in ''VideoGame/HeroesOfMightAndMagic 5'' has acid blood, allowing them to harm any creature that attacks them in melee.
358* KAEDE Smith in ''VideoGame/{{Killer7}}'' has the special move "[[RainOfBlood Blood Shower]]" during which she cuts her own wrists spraying blood everywhere and unveiling any hidden passages.
359* ''VideoGame/KingdomOfLoathing'':
360** Two skills in the Haemoturgy branch of the Dark Gyffte challenge path (basically, a NewGamePlus where the player is reincarnated as a vampire) are variants of Projectile Blood. Blood Chains involves stunning the opponent with a [[ChainPain giant chain]] made of blood, while Blood Spike creates a huge spike of blood that deals physical damage. The description for the latter has a dry quip that can be applied to this trope in general:
361--->Sometimes a wound causes bleeding, sometimes it's the other way around.
362** Blood Cloak, from the same skill branch, inverts this; this is using blood to ''avoid'' combat.
363** Player who completed Dark Gyffte while it was in-season got a "Booke of Vampyric Knowledge" skillbook, which granted different skills depending on class. All are themed around CastFromHP, and some of them also embody this trope. For example, Disco Bandits (DanceBattler crossed with BladeEnthusiast) got Blood Blade, which solidifies their blood into a knife with extraordinarily high base damage but no other enchantments, while Pastamancers (ChefOfIron-types with skills themed around magical pasta) got Blood Bucatini, which turns their blood into pasta that causes fairly low damage but also lowers opponents' attack and defense.
364* In ''VideoGame/TheKingOfFighters'', Lin, a Chinese ninja, has his blood type listed as "[[PoisonousPerson poison]]". In gameplay terms, this means that some of his moves involve momentarily covering his hands with his blood in a way that makes it look like he's wearing surgeon's gloves made out of blood, and he has a super move that poisons the opponent. Turning the blood off from options turns it [[AlienBlood green]] instead, and makes his winning portrait look like his hands are covered in snot.
365* ''Franchise/{{Kirby}}'':
366** This is one of Zero's attacks in ''VideoGame/KirbysDreamLand3''. Yes, you read that correctly. The TrueFinalBoss of a K-A rated SNES game cuts itself so its blood will attack Kirby... and also ''rips out its own bloody iris'' as a last-ditch attempt to kill Kirby.
367** And then cue Zero Two in ''VideoGame/Kirby64TheCrystalShards''. Its official art shows it crying blood, to be expected since it's more-or-less a reincarnation of Zero; moreover, the tips of its wings are crimson-red and look like they're soaked with the stuff. It also splatters about whenever you hit Zero Two in its eye -- [[DownplayedTrope however]], due to the graphics this can be mistaken for red energy or explosions.
368* ''VideoGame/LeagueOfLegends'' has Vladimir, the Crimson Reaper, who is described as a [[{{Whatevermancy}} "Hemomancer"]]. He can drain life, throw deadly streams of blood, temporarily melt into a pool of blood, and infect enemies with a deadly "Hemoplague", which weakens and damages them.
369* The flash game ''VideoGame/MedievalRampage 2'' demonstrates this in its most basic form--kill various types of monsters, and they leave behind various types of unpleasant goop that you're better off not stepping in. Initially, you just encounter black goop that somehow blinds you and orange goop that slows you down, but green blood (identified as "acid" in the achievement list) actually damages you if you touch it. The overall effect is to constrain your movements as the waves of enemies get thicker and thicker.
370* The ''VideoGame/MetalSlug'' series has a zombie apocalypse stage in some of its iterations. When you get hit by a zombie you don't die immediately, but you become a lumbering zombie yourself. Your gun as a zombie is crap but your grenades become [[ZombiePukeAttack a stream of blood that your character vomits in an arc that sweeps over half of the screen]], and it's also one of the most powerful attacks in the series.
371* ''VideoGame/{{Monolith}}'' has many enemies (namely Lost Souls, which seem to be composed of blood as well) that fire bullets made of blood.
372* Baruragaru from ''VideoGame/MonsterHunterFrontier'' is a Leviathan that weaponizes the blood it sucks from Bird Wyverns such as Velocidrome, Gendrome and Iodrome into various attacks. Such as an attribute-lowering attack with Velocidrome blood, paralyzing strikes with Gendrome blood and poisonous mists with the Iodrome's blood. It can also drain the hunter of blood and use it for attacks, too.
373* ''Franchise/MortalKombat'':
374** ''VideoGame/MortalKombatDeadlyAlliance'': This game introduces the [[OurVampiresAreDifferent vampire Nitara]] whose projectile move is a ball of blood she fires from her mouth.
375** ''VideoGame/MortalKombat9'' [[DownloadableContent Skarlet]] uses her own blood as a weapon and is herself a creature made of blood[[note]]In ''VideoGame/MortalKombat11'', she is retconned into a being a former street urchin who was taken in by Shao Kahn and taught blood magic[[/note]]. Noob Saibot in the same game bleeds a black inky substance that he also uses to create the clones that he uses in his attacks.
376* Wyrm Masters in ''VideoGame/NexusClash'' have acid blood that consciously seeks to cling to whoever spilled it. Fighting one with a sword or arrows is a bad idea; it's better to use fists, [[KillItWithFire fire]] or some sort of HolyHandGrenade.
377* ''VideoGame/NotDyingToday'' have the B.G. Nurse, a powerful zombie boss, who can puke a pillar of blood as a melee attaack covering a large portion of a screen. Said attack seems to be lifted directly from ''Metal Slug'' above.
378* From ''VideoGame/PokemonRubyAndSapphire'' onwards, there's the Liquid Ooze ability. Any Pokémon that uses a health-draining attack on a Pokémon with this ability will take damage instead of regaining health.
379* ''VideoGame/RemorseTheList'' have the Blood Demon enemies, BossInMookClothing elementals made of ''blood'' who can fling puddles of blood at you. Not only are the blood corrosive, but if it misses it's mark, the blood will somehow sprout ''bloody spikes'' that can damage you.
380* ''Franchise/ResidentEvil'':
381** Alexia Ashford from ''VideoGame/ResidentEvilCodeVeronica'' flings her blood at the player throughout the first boss battle with her. When exposed to the air, her blood ''catches fire.''
382** Being infected with the T-Veronica virus, [[spoiler: Manuela]] helps out Leon and Krauser during their final boss fight in ''VideoGame/ResidentEvilTheDarksideChronicles'' by tossing her flaming blood at it. This fight also indicates that it is a dangerous technique, since [[spoiler: [[CastFromHitPoints if you let her use too much blood she dies at the end]].]]
383* [[MagicKnight Riftblade warriors]] in ''VideoGame/{{Rift}}'' can learn the ability "Burning Blood," which causes any CriticalHit on the warrior to damage their opponent as well.
384* Charlotte from ''VideoGame/RumblePack'' uses blood for some attacks. Since she is a vampire, it is unclear whether the blood is her own or comes from her victims.
385* The [[{{Whatevermancy}} Sanguimancer]] of ''VideoGame/SaltAndSacrifice'', as his name suggests, can conjure blood in order to attack the player. Fortunately, he lacks the ability to control the player's blood.
386* ''VideoGame/TheSecretWorld'' has Blood Magic, which is good for boiling enemies' blood, attacking them with spikes of congealed blood... and healing and shielding your allies.
387* ''VideoGame/{{Skullgirls}}'':
388** [[OurZombiesAreDifferent Zombie]] CatGirl Ms. Fortune doesn't use her blood to attack directly, [[HighPressureBlood but instead uses it to propel herself during her air dashes.]] However, she does have one move that has her create an explosion out of her blood, thus playing the trope completely straight.
389** {{DLC}} character Eliza is a straight example of this, molding her blood into various Egyptian shapes to attack.
390* ''VideoGame/SoulSacrifice'' has one type of spell which allows you to fire a spray of blood, dealing damage at the cost of [[CastFromHitPoints constantly draining your HP while firing]]. There are two variations of the spell; one is a scattershot that covers a wide area, the other a series of slashes by holding down the command. With exception to the [[CharacterCustomization protagonist]], the only character who keeps this in their move set is [[FailureKnight Aegrus]]. It's also the only spell which can be used without limitation (besides running out of health).
391* The Elite Beam Weapon in ''VideoGame/StarWarsRepublicCommando'' extracts blood from the Geonosian Elite using it and converts it into a special fuel for the weapon. While [[PlayerCharacter RC-01/138]] can use it, the needles can't siphon blood from him due to his armor (and the fact he's a cloned human); as such, he's stuck with whatever fluid is leftover and the weapon is [[ThrowAwayGuns discarded once it's empty]].
392* The Mainliners from ''VideoGame/TheSuffering'' are, essentially, the embodiments of death by lethal injection, so they don't have any blood in the proper sense, instead leaking a greenish fluid that burns you if you step in it. They indirectly use this as an attack as well -- the same fluid is contained in syringes that stick out of their backs like porcupine quills, which they either throw from a distance or stab you with for massive damage.
393* ''VideoGame/{{Terraria}}'' : Despite the [[ToiletHumor unfortunate name]], the Golden Shower weapon actually fires a yellow stream of "ichor", which is basically highly corrosive demon blood. It does decent damage per second, especially paired with the fact that it causes a debuff that lowers the target's defense.
394* ''Franchise/TouhouProject'':
395** Remilia Scarlet is another vampire capable of weaponizing blood. As Marisa said in her Grimoire, "[[http://en.touhouwiki.net/wiki/The_Grimoire_of_Marisa:_Remilia_Scarlet%27s_Spell_Cards Blood is amazing]]".
396** The blood of a Celestial is poisonous to Youkai. HilarityEnsues when Remilia tries to drink Tenshi's blood in the fancomic ''Webcomic/TouhouNekokayou''.
397* The BigBad of Akiha's path in ''VisualNovel/{{Tsukihime}}'' can turn his blood into swords. Even at a distance. Even when it's ''soaked into your shirt''.
398* In ''VideoGame/{{Turok}} 2'', there are zombie enemies that can throw blood at you. If you go to the options screen and turn the blood off, this section becomes a lot easier.
399* Carmine of ''VideoGame/UnderNightInBirth'' wields his own blood as a weapon (as well as [[MundaneUtility hair dye]]), whether crystalized (normal attacks) or liquid (special attacks, which are usually CastFromHitPoints and leave temporary blood pools to empower further attacks).
400* The ''VideoGame/{{Warcraft}} 3'' custom map ''Tides of Blood'' has a hero known as the Blood Mage, which is different from the standard Blood Mage in that his title is a bit more literal. He can [[CastFromHitPoints use his own HP]] to summon geysers of blood and "Blood Elementals". His ultimate technique is, naturally, [[TitleDrop Tides of Blood]].
401* In ''VideoGame/TheWitcher'' series, the Black Blood potion lets Geralt and other witchers turn vampires' HorrorHunger against them, by making their own blood corrosive and poisonous to vampires if they try to feed. In fact, the Black Blood potion that Geralt uses in the "A Night to Remember" trailer is the key to him defeating the bruxa he's fighting. Naturally, this potion would horrifically kill any normal human who tries to imbibe it, but witchers are [[SuperSoldier much more than human]].
402* ''VideoGame/{{Wizardry}}'' 8 has Level 6 Fire spell Boiling Blood, which does considerable fire damage to one target, and should they be killed by it, they explode violently and damage nearby enemies as well. A gadgeteer class has an access to Microwave emittor, which is somehow obtained by putting a chip from destroyed microwave into a broken blaster and basically does the same.
403* ''VideoGame/WorldOfWarcraft'':
404** Death knights get Blood Horrors, Boiling Blood, and Blood Boost. Though they gain power from the spilling of their enemies' blood as well as their own.
405** Deathbringer Saurfang, strongest Death Knight of the Lich King, is a Blood death knight turned up to eleven.
406** The Old Gods' blood can spawn Horrors. After it hardens, it can be mined and used to craft weapons, armor and even buildings. [[spoiler:[[SideEffectsInclude Prolonged exposure may lead to insanity.]]]]
407** Deathwing bleeds Old God-corrupted magma which is highly corrosive and spawns Horrors.
408** [[WombLevel Nespirah's]] blood cells are big enough to absorb most humanoids. It means no harm, but only has limited control over its bodily functions.
409** Hakkar's Corrupted Blood was not only [[HoistByHisOwnPetard highly toxic]], but infectious enough to turn into a full-fledged [[http://www.wowwiki.com/Corrupted_Blood pandemic]].
410[[/folder]]
411
412[[folder:Visual Novels]]
413* The dragon in ''VisualNovel/DraKoi'' turns her blood acidic in order to fight the hero that much more effectively.
414* In [=ClockUp=]'s ''VisualNovel/MaggotBaits'', we have Brutal Edge:
415-->''Name given to the Witches' [[WeaponSpecialization signature weapons]].\
416Made of a Witch's coagulated blood, naturally imbued with power.\
417Sword, axe, spear; they take many forms, all intended to shed great quantities of blood.\
418In the hands of a Witch, they exhibit a destructive power that transcends the laws of physics.\
419Destroying one will cause a Witch to lose a lot of her power, greatly weakening her.''
420[[/folder]]
421
422[[folder:Webcomics]]
423* In ''Webcomic/TheAdventuresOfDrMcNinja'', Dr. [=McNinja=]'s father stores up poison in his blood so that he can shoot it out of his eyes like a lizard.
424* ''Webcomic/BloodIsMine'': Jane can control anything that her blood is inside of, including ''people''. She can see through their eyes, speak to them telepathically, modify their bodies, dig through their memories, and use their skills. Eventually, she learns to produce and manipulate all kinds of biomatter.
425* ''Webcomic/{{Drowtales}}'': Blood is one of the various [[ElementalPowers elemental affinities]] drow can have. One of the main characters, Chrys'tel, has a well-developed blood affinity and uses it to create what are essentially grenades by filling vials with blood (largely her own) and throwing them at opponents, making them explode when close enough.
426* ''Webcomic/EnemyQuest'': Much like the Xenomorphs of ''Franchise/{{Alien}}'' fame the alien Skut possess acidic blood. They put it to lethal effect during the [[AlienInvasion war]], as their status as the invading Visitor's ActionBomb meant that anyone who their blasts didn't get would end up splashed with the stuff.
427* The protagonist of ''Webcomic/{{Erfworld}}'', Parson, lies to his captors that his blood functions as a potent contact poison. Given that people in Erfworld do not bleed externally like they do in real life (where Parson is from), the enemy Warlord is not willing to risk spilling his blood.
428* [[http://www.flipsidecomics.com/comic.php?i=435 Used to terrifying effect]] in ''Webcomic/{{Flipside}}''.
429* ''Webcomic/JoJopolis'': Rose Speedwagon's Stand, Love Like Blood, gives her full control over her circulatory system, including [[CombatTentacles manipulating her veins like tentacles]], shooting blood like a projectile, and [[MyBloodRunsHot increasing its temperature hot enough to cause burns]].
430* Though it's never actually been weaponized (yet), Joey's blood from ''Webcomic/{{Mortifer}}'' burns whatever it touches. [[http://mortifer.smackjeeves.com/comics/560913/chap25page24/ It can even light stuff on fire, if left too long.]] This actually inconveniences him more than anyone else, though.
431-->'''Joey:''' I don't think you understand the difficulties I have. Fire-proof eyepatch, fire-proof gloves, fire-proof clothes... Just to keep them from melting whenever I get a scratch.
432%% * This is the special ability of ''Webcomic/{{Noblesse}}'''s main character, Cadis Etrama Di Raizel, as seen here and here.
433* The Secreted Weapons of Doyt Gyo in ''Webcomic/SchlockMercenary''. Not limited to fluids; his... solid products are explosive.
434* Mr. Jinx in ''Webcomic/{{Starslip}}'', among numerous other BizarreAlienBiology traits, has corrosive blood that can actually be ''ejected from his eyes'', and as another character unpleasantly discovers, his blood is alkaline, not acid.
435* ''Webcomic/ZebraGirl'': All of Sandra's bodily fluids are highly acidic. Her blood's also something of a drug to vampires.
436[[/folder]]
437
438[[folder:Web Original]]
439* ''Literature/MadgieWhatDidYouDo'': [[http://akaichounokoe.deviantart.com/art/Shattered-Glass-273936881 Toki's]] blood is apparently toxic, considering that when it ends up in the bloodstream of someone who isn't her sister (or baby), it can turn them to crystal. This is a variant in that, while toxic, it has to get ''into'' a person for the effect to work. At the same, it also causes flowers to sprout, as demonstrated in one story.
440* TheFairFolk in ''Literature/{{Moonflowers}}'' have corrosive blood -- it burns humans and can eat through the metal of a car enough to require extensive repairs. It also goes the other way: ''human'' blood will burn fairies on contact if the human has recently eaten rock-salt.
441* In ''Website/{{Mortasheen}}'', the [[http://www.bogleech.com/mortasheen/viviphage.htm Viviphage]] has the power to control blood, ripping out the blood of its victims. It also happens to be the ultimate form of the [[OurVampiresAreDifferent Vampire race]] and look like a bacteriophage. There's also the [[http://www.bogleech.com/mortasheen/mothneaser.htm Mothneaser]], one of the game's OlympusMons that produces massive quantities of blood that it doesn't just turn into weapons or horrible "blood golems" but also can insert tendrils of its own blood into people to puppeteer their bodies.
442* ''Literature/WhateleyUniverse'':
443** Forget mere acid blood. Tennyo has anti-matter (or something scientists cannot distinguish from anti-matter) in her cells, so she can release anti-matter into her blood when she wants to. It doesn't ever harm ''her'', but you don't want to be hit by her blood if she gets injured. (Note that this doesn't usually seem to be a major issue because she heals just that damn fast -- but there is one canon scene where she deliberately bites her lip to [[spoiler:shatter a block of solid ice she and a teammate are encased in]] because she's worried about just cutting loose with her energy blasts. It works.)
444** While on the subject of Whateley, in Hawthorne Cottage (the one for those students who ''really'' can't easily lead a normal life even for mutants) there lives a girl who has poisonous blood, but [[RequiredSecondaryPowers no immunity to it.]] She can't ever leave her room because she's hooked up to life support and her blood is so incredibly toxic that visitors or cleaning personnel have to wear sealed suits and follow strict biohazard protocols. Compared to her, many of the other kids at Hawthorne (to say nothing of other students who have trouble adjusting to their mutation-induced changes) have it easy.
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446
447[[folder:Web Videos]]
448* ''Series/FlandersCompany'': JokeCharacter {{Emo}}-Man's superpower is to give himself a paper cut that results in a devastating high-pressure stream of blood.
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450
451[[folder:Western Animation]]
452* A throwaway gag in ''WesternAnimation/FamilyGuy'' involved showing a video on how to identify gay people. One indicator was ownership of a Madonna album; the other was having "deadly corrosive acid instead of blood."
453* ''WesternAnimation/TransformersAnimated'': Given how Energon is both used as SymbolicBlood and the standard fuel sources for both all Cybertronians and their various guns, one can consider Optimus Prime's Energon axe to be made out of his own "blood" formed into a laser axe.
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455
456[[folder:Real Life]]
457* Several species of [[http://en.wikipedia.org/wiki/Horned_lizard horned lizards]] [[https://www.youtube.com/watch?v=gEl6TXrkZnk squirt streams of blood]] (for a distance up to 3ft!) from the corners of their eyes as a self-defense mechanism. They're quite accurate with spraying it at a predator's eyes and mouth, and it apparently has an an unpalatable flavor to dogs and cats.
458* There are many criminal cases stemming from a perpetrator with a blood-borne disease purposely having intercourse with, bleeding on, or stabbing victims with used needles.
459* In 1994, a woman named [[http://en.wikipedia.org/wiki/Gloria_Ramirez Gloria Ramirez]] suffering from late-stage cervical cancer was brought to a hospital in California. When one of the nurses treating her tried to draw blood, she noticed a strong smell of ammonia. One of the doctors then noticed small particles in the blood. A few minutes later, the nurse fainted, and shortly after that, the doctor got sick to her stomach and fainted herself. A few minutes after that, somebody else fainted. Months later, Livermore Laboratories concluded that the woman had been taking dimethyl sulfoxide for pain, which had been building up in her bloodstream due to a urinary blockage and that her treatment in the emergency room caused it to turn into dimethyl sulfate, a poisonous gas.
460* Eel blood is toxic to humans. It can be safely eaten, as both cooking and the digestive process destroys the toxicity, but should it come into contact with the bloodstream via another means will cause anaphylaxis.
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