Line #35 Main/PersonalityBloodTypes


1	[[quoteright:350:[[Webcomic/ASimpleThinkingAboutBloodType https://static.tvtropes.org/pmwiki/pub/images/picture1.jpg]]]]
2
3	->''I'm such an optimist that my doctor told me my blood type was B Positive.''
4	-->-- '''Mark Rosewater''', ''TabletopGame/MagicTheGathering'' R&D
5
6	In much of Asia, especially well known in Japan, blood types are seen to determine personalities. It's common in any series where it's AllThereInTheManual to list the blood type of all the characters. Incidentally, the practice started as a type of pseudo-scientific propaganda: One group of people rebelled against invasion while another simply accepted the invaders. Since the two groups had different blood-types, the army doctors simply claimed that it was their blood-types making them rebel, rather than accept that just maybe, most people don't ''like'' having their country invaded. Interestingly, there used to be machines in public places which would tell your blood type, but they were removed after the health issue associated with shared needles became more apparent.
7
8	It's said that the predominant blood type in Japan is A, with about 40% of the population, while Americans tend toward O, about 37%. It's also estimated that more than 99% of the Japanese are Rh+, so the familiar +/- seen after American blood types can usually be dispensed with.
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10	This belief was also the basis for a Japanese eugenics program during [=WW2=], and has since been [[ScienceMarchesOn disproven]].
11
12	While the system above is almost exclusively an east Asian trope, Western media does occasionally use blood types as metaphors for a character's personality, especially assigning Type O- (Universal Donor) to generous, selfless characters.
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14	Compare: FourTemperamentEnsemble.
15
16	See also ABNegative and ThePowerOfBlood.
17
18	----
19	!!Examples:
20
21	%% "Characters have blood types" is not a trope. Examples need to explain how the characters' blood types are related to their personalities. Examples that doen't mention any correlation between the characters' personalities and their assigned blood types are deemed shoehorns and will be cut.
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23	[[foldercontrol]]
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25	[[folder:Anime and Manga]]
26	%%* In ''Manga/TheCherryProject Chieri'' calls LoveInterest Tsuzuki a "Typical A" and he calls her a "Typical B" back.
27	* Kamiyama, Hayashida and Maeda from ''Manga/CromartieHighSchool'' try to deduce Freddy's blood type based on his behaviour. They presume him as a B-type by looking at his completely unpredictable movements (sumo teppo practice shows him to be an A type and holding a textbook upside down is considered either a B type or an AB type).
28	* The issue pops up in a chapter of ''Manga/FrankenFran'', in which the school becomes obsessed with the theory to the point that it causes social splits and discrimination. This causes problems for Adorea, whose dominant blood type is constantly changing due to the sheer number of organs she stores in her body.
29	* Volume 6 of the ''VideoGame/HarukanaruTokiNoNakaDe'' manga includes a scene with Akane, Tenma and Shimon trying to guess the blood types of the Hachiyou based on their personalities.
30	* Several characters in ''Manga/JoJosBizarreAdventure'' have listed blood types.
31	** Jonathan Joestar is type A, fitting with his caring personality.
32	** Joseph Joestar is Type B, suiting his more playful personality and optimism, especially as a young man.
33	** Jotaro Kujo is also Type B, which is unusual considering his more subdued personality. But he definitely fits some of the "loner" bits of the type.
34	** Giorno Giovanna is the only Type AB main character, suiting his serious and introverted attitude.
35	%%* In ''Anime/KnightHunters'', the personalities of the four original members of Weiss are all [[FourTemperamentEnsemble fairly well-matched]] to their respective blood types: Omi is type O, Aya is type A, Ken is type B, and Youji is type AB.
36	%%* {{Lampshade\|Hanging}}d in ''Manga/MagicKnightRayearth'', Fuu includes her blood type when introducing herself to Hikaru and Umi. Mystified, they ask why; and she hastily replies in case she needs medical attention.
37	* An episode of ''Manga/{{Naruto}} Shippuden'' deals with this. Orochimaru asks whether Kabuto is a Type A, much to his chagrin that he's AB, meaning that he doesn't know about Kabuto as much as he has assumed. This hints that Kabuto is hiding something that not even Orochimaru is aware of, hinting at Kabuto's dual nature as the perfect spy, and it also hints at Kabuto being able to integrate the DNA of different people inside of him. Kabuto's character is about trying to find an identity for himself.
38	%%* ''Manga/NegimaMagisterNegiMagi'': Negi is type AB which very much fits his personalty also fits his parents personalities [[spoiler: his father would be a Type B and his Mother fits Type A very well]]. It also befits his status as the center of the harem. AB is compatible with ''everyone''.
39	* And there´s a ''Manga/OnePiece'' entry. In a SBS Creator/EiichiroOda revealed the Straw Hats' blood types this way:
40	** Luffy is F (by extension, Jimbei too)
41	** Zoro is XF
42	** Nami is X
43	** Usopp is S
44	** Sanji is S (Rh-)
45	** Chopper is X
46	** Robin is S
47	** Franky is XF
48	** Brook is X
49	** Vivi is F
50	*** The catch is that Oda explained that the nomenclature isn´t uniform yet, so there are people out there that use "A,B,O/C,AB" pattern. So if A -> X, B -> F and S -> O, we get the trope played straight (with the curious exceptions of [[LovableCoward Usopp]], [[BoisterousBruiser Franky]] and [[ChivalrousPervert Brook]]).
51	* ''Manga/OuranHighSchoolHostClub'' has an absolutely hilarious scene where Kaoru and Hikaru convince Haruhi that Honey is actually evil to the core by pointing out that he has the same blood type (AB) as Kyoya. Haruhi immediately broke the FourthWall to apologize to any viewers with AB blood type.
52	* Episode 3 of ''Manga/RecoveryOfAnMMOJunkie'' has a scene where Koiwai asks Sakurai if he's an A Type because he's such a stickler (he is), then uses his own O blood type to justify his glib antics. A disclaimer immediately appears, stating that personality have nothing to do with blood types.
53	* In ''Anime/RevolutionaryGirlUtena'', one episode has a tidbit where Nanami and her posse discuss the blood type-personality correlation. It reveals that, while their parents and Nanami have Type B blood, Touga (her AloofBigBrother) has Type A, which should be impossible... it turns out that [[spoiler:[[NotBloodSiblings both of them were adopted]]. Although, due to how shaky things were getting between the two and the fact that she had been too young to remember, Nanami automatically assumes that just Touga was adopted]]...
54	** There's also this scene:
55	--->'''Utena:''' Himemiya, you're type-AB, right? Let's see, type-[=ABs=] are elusive and seldom reveal their true feelings, huh?\
56	'''Anthy:''' And you're type-B, right, Utena-sama? [[StealthInsult Type-Bs are self-centered and prone to misconceptions...]].\
57	'''Utena:''' Yeah, sorry, okay.
58	* In ''Manga/{{Sketchbook}}'' many characters' personalities seem to fit their stated blood types. Hazuki Torikai (type A) is the straightest example, which is lampshaded several times in the manga. However, [[{{Cloudcuckoolander}} Sora]] [[TheQuietOne Kajiwara]] (Type A) and [[HotBlooded Daichi]] [[HairTriggerTemper Negishi]] (Type AB) are subversions, which is also lampshaded.
59	-->'''Daichi Negishi:''' [[NoIndoorVoice I'M AB!]] DID YOU THINK I WAS B? BASTARDS! WELL I'M NOT! SORRY!
60	* The four main leads of ''Manga/WotakoiLoveIsHardForOtaku'' each has a different blood type that corresponds to their respective personality stereotype.
61	** Kind and sweet Narumi is Type A.
62	** Laid-back and self-absorbed Hirotaka is Type B.
63	** HotBlooded but responsible Kabakura is Type O.
64	** Cool and independent Koyanagi is Type AB.
65	** Naoya averts this trope by being a Type AB despite being nice and happy-go-lucky like Narumi. However, Kou's [[ShrinkingViolet shy]] and [[ApologizesALot constantly apologetic]] personality fits her Type A blood.
66	* ''Manga/YuGiOh'':
67	** Zigzagged with Yugi Moto, who has type AB blood. Cool, controlled and unforgiving aren't the best choice of words to describe him. They are, however, a good choice of words to describe his ''alter-ego'' Yami Yugi, who shares his blood type on account of sharing his body. Also, a sub-characteristic associated with AB blood type is SplitPersonality. Or an least mood swings. Which Yugi has. In spades.
68	** Bakura who also have a SplitPersonality is also type AB.
69	** Marik, despite also having SplitPersonality like Yugi and Bakura, is ''not'' type AB. However, his actual blood type (B) does fit his personality much better than AB. The fact that Marik's other half came from very different circumstances than Yugi's or Bakura's is probably why he's different.
70	%%* ''Anime/{{Aggretsuko}}'' mentions that she is type A when she is introducing herself to the audience in both the first episode of the original shorts and the first episode of the Netflix series.
71	[[/folder]]
72
73	[[folder:Films -- Live-Action]]
74	* In ''Film/MadMaxFuryRoad'' it's a major plot point that Max is a universal donor and his personality actually does match up quite well with most of the traits of Type Os described above.
75	[[/folder]]
76
77	[[folder:Music]]
78	* Discussed in South Korean girl group [[Music/{{Fx}} f(x)]]'s [[{{Pun}} nu]] song ''NU ABO'', where it describes a completely different personality symbolized by a nonexistent blood type called ABO.
79	* Is the whole theme of the Japanese song ''[[https://m.youtube.com/watch?v=T3jtyZOqCtk Blood Type Hamburger Shop,]]'' each verse featuring an employee [[ThePerfectionist exe]][[BoisterousBruiser mpl]][[DitzyGenius ify]][[TheGadfly ing]] each blood type taking the orders of [[ButtMonkey an unfortunate customer]]. Curiously, the verse for AB heavily downplays the "coolheaded" and "rational" bit despite mentioning it in-song, and is played more like an AbsentmindedProfessor. Like many things, it is a subject of heavy MemeticMutation on Platform/NicoNicoDouga, with many videos in various fandoms being created, matching up the characters with their corresponding blood type personality.
80	[[/folder]]
81
82	[[folder:Literature]]
83	* ''The Bronze Horseman'' by Paullina Simons. After Major Belov is severely wounded during a river assault, his wife Tatiana, a nurse in the Red Army, saves his life by donating her own blood. Belov is told it's lucky she's a universal donor. Belov can only think with irony "[[TheHeart Of course she is]]."
84	* In Creator/KevinJAnderson's ''Death Warmed Over'', a halfway house for down-and-out monsters offers expired B-positive blood packs from hospitals to vampires in need. It's not a popular flavor, but the house's manager likes to reinforce the "be positive" message.
85	[[/folder]]
86
87	[[folder:Live-Action TV]]
88	* Series/{{House}} is type AB ("Universal Receiver"); [[HeterosexualLifePartner Wilson]] is type O ("Universal Donor"). In this example, the Japanese personality types are completely ignored and it's brought up in-universe solely as a comment on House's tendency to take from anyone whatever he needs and Wilson's tendency to give ''to'' anyone whatever ''they'' need.
89	* In the first episode of the Japanese [[BunnyEarsLawyer Bunny Ears Detective]] show ''Kiina: Impossible Crime Investigator'', the title character becomes convinced that a man committed a murder despite him not matching the blood type found at the scene because his personality doesn't match the blood that was drawn from him for comparison. The other detectives think this is ridiculous, but she turns out to be right. He was a doctor, and inserted a tube of someone else's blood into his arm so the blood could be drawn from that..
90	[[/folder]]
91
92	[[folder:Video Games]]
93	* As a Western game with Japanese influences, ''VideoGame/BattleGirl'' lists its heroine's blood type among her vital stats. It's B, which suits her.
94	* The indie RPG ''VideoGame/CthulhuSavesTheWorld'' has Umi, one of the party members, bring this up as banter. Umi states that her blood type is B+, making her a cheery person. Unfortunately, the other party members are the Great Old One-turned-hero, a talking sword, a goth necromancer, an alien, a crazy priest and a demon-dragon. These members respectively have ink, nothing, Uranium, and acid. Not even two other human members can give expectable answers, as the old man is insane, and therefore cannot remember his blood type, and the necromancer, being {{Emo}}, says she's got pain for blood.
95	* ''Franchise/FinalFantasy'':
96	** Parodied for Mog from ''VideoGame/FinalFantasyVI'' - his official listed blood type is "black-footed duck."
97	** Shockingly, Cloud Strife from ''VideoGame/FinalFantasyVII'' fits the AB blood type 'personality' almost to a T. Guess which blood type he is.
98	** Same goes for Squall Leonhart from ''VideoGame/FinalFantasyVIII'' but not as hard like Cloud to have split personality. But, rather a "mask" to cope with his abandonment issues.
99	* In the Japanese version of ''VideoGame/FireEmblemTheBlazingBlade'', the elemental affinity of the tactician (an avatar for the player) was determined by both birth date and their blood type, both which could be manually chosen. In the international releases, since this trope doesn't have as much relevance, it was changed so that birth date was the sole factor in deciding affinity.
100	* In ''VideoGame/HiFiRush'', our IdiotHero Chai's blood type is... '??'. Which either indicates that he has never done anything that would let him discover his blood type, or that he just has no clue what it means, either of which would suit him.
101	* In the ''VideoGame/PrincessMaker'' games, stats are determined by blood type. And in ''[[VideoGame/PrincessMaker2 2]]'', it also determines how stressed the girl gets; one notable aspect is that a girl with Type A blood will [[TheStoic never smile]].
102	%%* Another Japanese-influenced game, ''VideoGame/{{Skullgirls}}'', also has blood types for each of the characters, and they correspond pretty well. Some of the characters, however, don't have standard blood types -- among them SG ([[AlienBlood for Skullgirl]]), embalmed (for [[CuteGhostGirl Squigly]]), and B♭ (for Big Band).
103	* An early PA in ''VideoGame/StarOceanTillTheEndOfTime'' gives the player the option of choosing Fayt's blood type. Each choice either raises or lowers the affection of certain party members, giving insight into what personality types they like and which ones they don't. Judging from Fayt's actual personality in the game, Type O seems to be his blood type by default (since the two that go up from this are Sophia (his childhood friend) and [[IneffectualLoner Albel]].) To support the fact that he remains optimist throughout the game, agrees to almost everything and is very sociable to the point where he makes friends easily. Also, if the group were to ever get ambushed, he announces that "He was careless!"
104	* You can choose a blood type for the protagonist in ''VisualNovel/TokimekiMemorialGirlsSide'' games. It only affects the horoscope. All of the love interests have blood types listed as well.
105	* In ''Valkyrie no Bouken'', you get to choose a blood type at the beginning. Whereas blood type doesn't establish your personality type, it does affect the rate at which you level up: A → normal, B → precocious, O → late-blooming, AB → random.
106	* In the HGame ''Violated Heroine'', you can customize the heroine's blood type at the beginning of the game to raise combat stats: A --> more Agility but less Spirit, B --> [[GlassCannon more Attack but less Defense]], O --> more Defense but less Attack, and AB --> more Spirit but less Attack.
107	* VisualNovel/PhoenixWrightAceAttorney If Phoenix presses Angel Starr's comment that the blood on the shoe matches Lana Skye's blood type, she'll ask him what he knows about blood types. In the Japanese version, he responds that A blood types are highly strung. In the English version, he instead makes a non sequitur comment about the murder being committed "in cold blood".
108	[[/folder]]
109
110	[[folder:Web Animation]]
111	* ''WebAnimation/EtraChanSawIt'': [[https://www.youtube.com/watch?v=VGYFiUpcBQ4 This story]] has Yuzuriha, Akane, and Azami bully the new worker, Tsutsuji, for being a type B while bragging about themselves being Type A. The bullying escalated until Hiiragi is hired, helping Tsutsuji call the main office.
112	[[/folder]]
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114	[[folder:Webcomics]]
115	* ''Webcomic/ASimpleThinkingAboutBloodType'' is an anthology series that portrays the personifications of the four blood types and how they stereotypically react to various life situations. Type A is a law-abiding but considerate people-pleaser. Type B is carefree and outspoken. Type O is goal-driven but temperamental. Type AB is a rational individualist.
116	* In ''Webcomic/{{Blip}}'', after the FriendlyNeighborhoodVampire consumes several gallons of Type B blood, she suddenly shows an impulsive streak, and the author speculates in TheRant that this trope is in play.
117	* The [[https://skin-horse.com/cast.html old cast page]] for ''Webcomic/SkinHorse'' includes blood types, including for the nonhuman characters[[note]]Sweetheart is [[https://www.merckvetmanual.com/dog-owners/blood-disorders-of-dogs/blood-groups-and-blood-transfusions-in-dogs DEA 1.1 negative]], Moustachio doesn't have any fluids, [[HiveMind Gavotte]] has hemolymph instead of blood, [[BrainInAJar Nick]] has a diesel ethanol blend, [[{{Animorphism}} Artie's]] is "variable".[[/note]] As far as regular human blood types go, Tip the [[ReallyGetsAround really-getting-around]] psychologist is Type O, Dr Lee the [[OnlySaneMan Only Sane Woman]] is Type AB, and Tigerlily Jones the insanely creative TheSeventies-themed MadScientist is Type B. Taken literally with Unity, whose personality ''is'' her blood; the [[MixAndMatchMan patchwork girl]] is just something to hold it. Shaenon, who worked for Creator/{{Viz}}, confirms that she based the human blood-types on the Japanese stereotypes [[http://narbonic.com/comic/december-3-8-2001/ here]], which also reveals she did the same for ''Webcomic/{{Narbonic}}'', although the only one stated is that Mell is also Type B.
118	[[/folder]]
119
120	[[folder:WesternAnimation]]
121	* Discussed in the ''WesternAnimation/MiraculousLadybug'' episode "Ikari Gozen". During the scavenger hunt, Kagami asks what [[Characters/MiraculousLadybugMarinetteDupainCheng Marinette Dupain-Cheng's]] blood type is, expressing surprise when the latter doesn't know. Kagami then explains that she's a type O, and therefore is independent, optimistic, strong-willed, and intuitive. She then reasons that Marinette must be [=AB=], based on her indecisive nature.
122	* It's blink and you'll miss it, but in the first episode of ''WesternAnimation/{{Futurama}}'', ''just'' before [[Characters/FuturamaPhilipJFry Philip J. Fry]] is about to get his career chip put in the first time, you see some of his info on a screen, where you can see that his blood type is B. Given his [[KindheartedSimpleton friendly and sunny if ditzy nature]], it fits him well.
123	[[/folder]]

Context Main / PersonalityBloodTypes