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1[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/htrksb.jpg]]
2->''Inside every human body, there are roughly 37.2 trillion cells, each and every one working hard to maintain a healthy and effective system 24/7. And they all take their jobs very seriously.\
3Welcome to the inside of a human body.''
4
5Characters (or [[AnthropomorphicPersonification anthropomorphic representations]] of [[AnthropomorphizedAnatomy real cellular organisms]]) in ''Manga/CellsAtWork'' Beware of potential spoilers.
6----
7
8[[foldercontrol]]
9
10[[folder:Cells in general]]
11
12* AbsurdlyDedicatedWorker: All the cells will keep doing their jobs to make sure the body stays alive, no matter what happens.
13* AnthropomorphizedAnatomy: A manga/anime about [[AnthropomorphicPersonification Anthropomorphic Personifications]] of the cells inside a human body.
14* PeopleFarms: Cells are manufactured in facilities and raised by other cells until they are old enough to do their jobs.
15* YouAreNumberSix: Each individual cell has a title and individual number. This is as close as they get to having names.
16
17[[/folder]]
18
19!Main Characters
20
21[[folder:Red Blood Cell / Erythrocyte ([=AE3803=])]]
22[[quoteright:225:https://static.tvtropes.org/pmwiki/pub/images/erythrocyte_anime.png]]
23[[caption-width-right:225:[[labelnote:Click here to see her as an Erythroblast]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_29_at_82543_am.png[[/labelnote]]]]
24
25->'''Voiced by:''' Creator/KanaHanazawa (Japanese), Creator/CheramiLeigh (English)
26
27A red blood cell, often referred to as simply '''Red Blood Cell''' or '''[=AE3803=]'''. Like all red blood cells, her job is facilitating respiratory exchange and delivering nutrients throughout the body. She is new to her job and often gets lost or makes mistakes, but is nevertheless determined to do her best.
28----
29* AffectionateGestureToTheHead: Rather than a head pat, she playfully pokes the Platelet Leader in the cheek.
30* AllOfTheOtherReindeer: As a young erythroblast, her classmates teased her because of her tendency to get lost easily.
31-->'''Male Erythroblast:''' I bet that girl's gonna lose her way and get eaten up!\
32'''Young [=AE3803=]:''' ''(frightened)'' Don't say ''that!''
33* ApologizesALot: She desperately apologizes to whoever she disturbs or tries to help her whenever she's lost.
34* AstonishinglyAppropriateAppearance: The protagonist red blood cell, who fittingly has a bob of bright red hair. No other red blood cell is seen with this hair color. According to flashbacks, she was chosen at birth to be a red blood cell by the Hematopoetic Stem Cells because of her hair color.
35* AttentionDeficitOohShiny: One reason she gets lost so often is because she stops to play with the Platelets, then forgets what she was doing and follows them wherever they are going, much to the chagrin of her kouhai.
36* AudienceSurrogate: Most of the time, Red Blood Cell asks various questions that the audience might have about the new types of cells they happen to meet.
37* BlushSticker: Not that noticeable, but she sports these to reflect on her PluckyGirl nature.
38* ButtMonkey: She has NoSenseOfDirection, combined with her clumsiness, and being a magnet for bacterial attacks. Poor girl can't catch a break.
39* ComicalOverreacting: Often lets loose a [[TheScream shrill scream]] when things go awry.
40* CoolBigSis: Acts as a sister to the Platelets, all too happy to set aside some time to play with them.
41* CuteButCacophonic: She is prone to extreme freak-outs whenever she is startled.
42* CuteClumsyGirl: She often messes up, [[NoSenseOfDirection getting lost all the time]], entering places she isn't supposed to, and sometimes crashes into others. This leads her to get flustered a lot and often she will [[ComicalOverreacting freak out]].
43* CutenessProximity: Practically turns to mush whenever the Platelets are around.
44* DamselInDistress: She doesn't possess any weapon or way to defend herself (though in Chapter/Episode 1, she manages to pull a BareHandedBladeBlock on Pneumococcus), so she's always at the mercy of hostile organisms in the body. {{Justified|Trope}}, as she is not a cell made to protect the body, but to transport oxygen. However, Red Blood Cells are great at running away, and [=AE3803=] manages to improve at dodging bacterial attacks to the point where they can't lay a single claw on her.
45* DefiantStoneThrow: She throws her nucleus (hat) against the 'Pseudomonas aeruginosa' when she was an Erythroblast. It doesn't do much damage, but lets her escape enough for U-1146 to find and defend her.
46* {{Determinator}}: As klutzy and out-of-her-depth as she may be in many situations, she embodies the true spirit of a Red Blood Cell by never faltering once in her job to carry oxygen.
47** {{Exaggerated|Trope}} in Episode 8 where she is not only tries to get her job done, but is also determined to do it by herself without the help of White Blood Cell or Senpai Red Blood Cell, with both of them seeing her emanating a fiery BattleAura showcasing her undying determination.
48** Exemplified best when she continues to trudge through [[spoiler:a raging blizzard, brushing with death as the entire body undergoes hypovolemic shock.]]
49** And then again in the manga finale, where her undying devotion to service despite [[spoiler: the cytokine storm]] helps to calm others.
50* FailedASpotCheck: In episode 8, she ''somehow'' misses U-1146 above a sign that says "Straight ahead," in which the latter was deliberately helping her fulfill her tasks.
51* ForgottenFirstMeeting: Turns out Red Blood Cell and White Blood Cell already met each other when they were still an erythroblast and a myelocyte (basically child cells) when a bacteria attacked the bone marrow they were staying in. However, they only met that once, so they don't remember each other's faces when they meet again as adult cells. Red Blood Cell considers the possibility White Blood Cell was the same myelocyte, but she dismisses it as that would be too much of a coincidence.
52* GutFeeling: Red Blood Cell's strand of hair tends to stand up straight if something bad is about to happen.
53* HeroicBystander: Red Blood Cells are not designed to combat bacteria and lack weapons[[note]]That is to say, the only bacterial defense they ''do'' have [[https://en.wikipedia.org/wiki/Red_blood_cell#Secondary_functions IRL,]] would likely be something of a SuicideAttack, HeroicSacrifice, or DangerousForbiddenTechnique at best[[/note]] and are taught to run on sight from any pathogens they encounter. Given her tendency to find herself getting caught up with pathogens, she has since become White Blood Cell's {{Sidekick}} of sorts and assists him however she can. She's also not completely defenseless: able to perform a BareHandedBladeBlock on Pneumococcus, and even as an erythroblast she [[WeaponizedHeadgear throws her hat]] at a Pseudomonas aeruginosa's eye to escape from it.
54* HeroicWannabe: As an erythroblast, she aspired to become a fully developed erythrocyte.
55* HisNameReallyIsBarkeep: Her full name is "Red Blood Cell [=AE3803=]".
56* HotBlooded: Pun aside, once she feels she's had enough of relying on others she fully intends to finish her tasks without any help. Her friends even notice this.
57* IdiotHair: She has a strand of hair sticking out from the side which at times [[ExpressiveHair twitches with emotion]]. It's been around since the day she was born. On an interesting note, Red Blood Cell's strange ahoge and tendency to get lost may imply that she is a sickle red blood cell. However, it is not confirmed.
58* IJustWantToBeNormal: She's all too conscious of how directionally challenged she is and would love nothing more than to be an efficient Red Blood Cell just like everyone else.
59* MeaningfulAppearance: All red blood cells wear berets that are shaped exactly like the real-life cells they represent. They wear similar hats as erythroblasts, with the only major difference being a pom-pom on top that represents the nucleus, which is pulled off when an erythroblast "graduates" to become a red blood cell.
60* MeaningfulName: Her name [=AE3803=] is a hexadecimal color for a shade of red.
61* {{Meido}}: As with her fellow Red Blood Cells, she wore a Meido uniform as a child, up until she graduated from cell school.
62* NaiveNewcomer: Is new to her job and it [[NoSenseOfDirection definitely]] [[CuteClumsyGirl shows]]. This benefits the story as it allows her to [[TheWatson ask questions about the human body for the sake of the young audience's education]].
63* NiceGirl: As sweet-tempered as she is [[CuteClumsyGirl clumsy]], and one of the few to outright thank White Blood Cell and his kind for their hard work.
64* NoSenseOfDirection: She is hopelessly bad at traveling the body from the time she was an erythroblast, and regularly needs either White Blood Cell or [=AA5100=], her Red Blood Cell ''senpai'', helping her. She gets better as time goes on.
65* OutOfFocus: There are a few chapters throughout the series where Red Blood Cell does not make an appearance at all. She is most notably absent for nearly the entirety of Volume 3 (Chapters 11-14), where the focus is the supporting characters, and Volume 5 (Chapters 20-25), which covers the Lactic Acid Bacteria and [[spoiler:Cancer Cell 2]] arcs. Her usual role in Volume 5 as TheWatson and SupportingProtagonist is taken by Ordinary Cell instead.
66* PluckyComicRelief: Her main shtick of NoSenseOfDirection plus her being a magnet for trouble is often the main source of comedy.
67* PluckyGirl: Even after facing germs on a daily basis, getting lost, or nearly dying, she will determinedly bring oxygen to the cells in need.
68* RedHeadedHero: Her bright red hair is taken note of when she is born, and ultimately decides her job in the body.
69* RedOniBlueOni:
70** Puns aside, she's the more emotional and excitable red to White Blood Cell's more serious blue.
71** She's also the red to her much more methodical, serious, and professional kouhai's blue.
72* TheScream: Frequently [[https://www.youtube.com/watch?v=R3okYwB5mmw does this]] when she gets berated by other cells or [[https://imgur.com/a/HLsNuWJ encounters harmful invaders in the body]], to the point where it's practically a RunningGag.
73* SecurityCling: To Senpai RBC when [=AE3803=] gets introduced to [=NT4201=], [[spoiler: [=AE3803=]'s new Kohai.]] It's too the point where [=AA5100=] is grimacing in pain at the amount of force she's being clung to.
74* SeenItAll: By the time she is tasked to train a kouhai, she has spent so much time around White Blood Cells that their various shenanigans have become this to her, in contrast to the bewilderment of said kouhai seeing such behavior for the first time.
75* ShipTease: For whatever reason; despite being cells, belonging to the same body, etc., U-1146 and [=AE3803=] have lots of affectionate interactions.
76* SupportingProtagonist: {{Downplayed}} example. Both she and White Blood Cell share roles as protagonists, but her role in the body is more of a civilian/support function, whereas White Blood Cell fills the more traditionally heroic role of protecting civilians and defeating enemies. Additionally, she is also [[OutOfFocus completely absent]] from a few chapters, whereas White Blood Cell has appeared in every chapter so far.
77* SweetTooth: Since red blood cells don't have nuclei,[[note]]and thus don't have mitochondria with which to produce energy[[/note]] they ingest glucose as a source of energy. This translates to Red Blood Cell being fairly fond of sweets.
78* TemptingFate: At the beginning of chapter 15, when [=AA5100=] warns her that going alone in the body is a bad idea, she responds that the possibilities of a red blood cell running into danger is minimal. Not only does she end up attacked by a random bacterium, but after being saved by a monocyte, she comes face to face with the group of Staphylococcus Aureus.
79* TomboyAndGirlyGirl: The tomboy to Macrophage's girly girl because of her more masucline manner of dress and lacking the same feminine charm. In a twist, she's the one lacking in combat prowess and [[DamselInDistress frequently in need of saving]].
80* UnskilledButStrong: Has the [[UnstoppableMailman innate determination]] to be an exemplary red blood cell, but is held back by her lack of experience navigating the body.
81* UnstoppableMailman: No matter how bad the situation is she never, ever gives up on delivering her package. [[spoiler: Not even during hypovolemic shock or cytokine storms.]]
82* WallRun: Red Blood Cells are very skilled at running from danger, moving so fast that she can run along the walls.
83* TheWatson: Serves as this to White Blood Cell and other characters, asking questions and receiving explanations about the various cellular organisms and organs encountered.
84
85[[/folder]]
86
87[[folder:White Blood Cell / Neutrophil (U-1146)]]
88[[quoteright:285:https://static.tvtropes.org/pmwiki/pub/images/leukocyte_anime.png]]
89[[caption-width-right:285:[[labelnote:Click here to see him as a myelocyte]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_29_at_82757_am.png[[/labelnote]]]]
90
91->'''Voiced by:''' Creator/TomoakiMaeno, Creator/TomoMuranaka (as a myelocyte) (Japanese), Creator/BillyKametz, Creator/EricaMendez (as a myelocyte) (English)
92
93A White Blood Cell. Is usually referred to as '''Neutrophil''' or '''U-1146'''. Like all white blood cells, his job is to patrol the body and take down any invading organisms. U-1146 is aloof and stoic, but cares very much about the other cells.
94----
95* AmazingTechnicolorPopulation: He and the rest of the Neutrophils have unnatural white skin, as much as the uniform they wear and their hair. He and the ones of his type are noticeably the only characters of the setting presented like this, since the other cells have a more realistic skin color.
96* TheArtifact: His name and character design indicates the fact that he (and his colleagues) were originally intended as the personification of ''all'' white blood cells, before all different types of white blood cells got their own personifications. Nowadays, his design is accepted as the personification of neutrophils.
97* BewareTheNiceOnes: Generally calm and nice, but as soon as invaders show up inside the body he can quickly switch into a murderous rage until all the threats have been neutralized.
98* BigBrotherInstinct: Has a very soft spot for the Platelets, offering them drinks and carrying them whenever there's trouble. Leader-Chan even calls him "Big Brother".
99* BigDamnHeroes: He is usually the one to save [=AE3803=] from trouble. Expect for him and his allies to pull this off once a chapter.
100* TheBigGuy: Like all defensive cells, his job is to protect the organism, fighting off all harmful cells with deadly force, and is also quite imposing in size.
101* BladeEnthusiast: His main way of dealing with enemy bacteria and viruses are knives, which is a trait shared by all Neutrophils. They have two variants of them; some smaller ones designed to be thrown at the enemies that are equipped at the belt (that are rarely used, since it's necessary to have practice with them to avoid hitting fellow neutrophils), and six bigger knives (inspired by Russian "antiterror" knives) equipped at the legs and the hips, that are primarily used for combat.
102* BloodIsTheNewBlack: U-1146 is practically never seen without bacterial cytoplasm on his jumpsuit when a germ invasion is happening.
103* BloodKnight: Quite literally. He and his kin are bloodthirsty fighters who live only to destroy the body's many invaders.
104* {{Bromance}}: With U-4989. Typically seen together in their White Blood Cell squad. Additionally, U-4989 appears to care very deeply about U-1146, as seen in Chapter 27 of the manga.
105* CasualDangerDialogue: He happily agrees to Red Blood Cell's request to give an overview of immune cells to Kohai Red Blood Cell... while he's busy tearing apart and killing a germ.
106* CatchPhrase: The White Blood Cells share ''"Antigen sighted!"'' and ''"Die, germs!"'' as catchphrases when working. The former is for when they encounter a bacteria, and the latter is for when attacking.
107* CharacterFocus: The second season of the anime adapts the volumes of the manga where Erythrocyte was largely OutOfFocus in favor of the rest of the side characters. This effectively makes the Neutrophil the actual main character of the season. This gets reflected in the ED, where while it starts off as a large group shot, it slowly zooms in to focus on Neutrophil who's in the center.
108* ChildhoodFriends:
109** With Eosinophil. They grew up in the same bone marrow.
110** Also with U-4989, U-2048 and U-2626. Asides from being classmates in Cell School and patrolling the same region as adult cells, there is also a picture of the four of them that was taken in a picture booth, complete with "[=BFFs=]" and sparkling eyes filters.
111* ClothingDamage:
112** His clothes are often splattered with blood whenever he and his teammates fight bacteria and viruses. An omake shows that they could request new uniforms whenever their uniforms are torn.
113** PlayedForLaughs when he is activated by seeing embarrassing pictures of his past given by Dendritic Cell.
114* ColourCodedCharacters: Taken to great extremes. He and other neutrophils don't only wear white clothes (the meaning of the color being purity and justice according to the extra material of volume 3), but they are also white themselves.
115* ColorMotif: White. This is TheArtifact of being originally standing for all white blood cells.
116* CombatPragmatist: Not above using some tricks or calling reinforcements to beat opponents giving him a hard time.
117* CreepyGood: Often seen as such, especially by Senpai Red Blood Cell and other non-immune cells. Despite his unnerving appearance, cold demeanor and [[BloodKnight unrelenting lust]] for the cytoplasm of pathogens, he does it all for the body's benefit and treats the other cells with professional courtesy.
118* CrossPoppingVeins: While normally laid back and calm, even White Blood Cell gets ticked off at NK Cell and Killer T Squad Leader's bickering.
119--> '''T Cell Squad Leader''': Stuff your sour grapes! I told you going off on your own was dumb!
120--> '''NK Cell''': Shut your face dumbass! You two blockheads couldn't even spot that Cancer cell taking a stroll in public!
121--> '''Neutrophil''': Cut it out you two! This isn't the time or place!
122* CutenessProximity: Even he is charmed by the absolute adorableness of the Platelets.
123* DetectEvil: Has the ability to detect invasive organisms such as bacteria thanks to a signal that emerges from the back of his cap when he's near them. All the Neutrophils have this.
124* {{Determinator}}: He refuses to give up from fighting until the enemy is dead. Shown in Episode 10 while hanging for dear life from a cliff, he declares that even if the body is failing he won't give up in killing the Bacillus Cereus.
125* DivingSave: With Memory B-Cell, Red Blood Cell and Senpai Red Blood Cell in episode 5 of the anime, when they're confronted by [[spoiler:the Steroid]]. (In the manga, he's blasted along with them.)
126* DueToTheDead: Numerous times, he is shown praying for all the dead cells who are killed by him and other white blood cells during virus attacks, as he laments that they had to be killed for the sake of the body.
127* EatingTheEnemy: He eats the pathogens he kills to identify them, and as a source of food (although they apparently don't taste good). White Blood Cells are also equipped with sprays that melt microbes down into more digestible parts.
128* EatMe: Pulls this strategy against the [[spoiler:leader Vibrio bacteria in the fourth episode.]]
129* EstablishingCharacterMoment: The first chapter shows who he is and how he operates: he's very competent at his job, an overall okay guy to have around, and a bit socially isolated from non-immune cells.
130* FaceOfAThug: He normally has a very serious expression with a ThousandYardStare, CreepyShadowedUndereyes and with his [[FaceFramedInShadow face covered in shadows]], but he is actually a nice fellow when not dealing with outside invaders. All of the Neutrophils have this, but he is recognizable from his partners due to the lock of hair covering his right eye.
131* FashionableAsymmetry: The very thing that distinguishes him from his peers is a lock of hair that covers his right eye.
132* FireForgedFriends: With Killer T Cell Squad Leader and NK Cell during the Cancer arcs.
133* ForgottenFirstMeeting:
134** Turns out Red Blood Cell and White Blood Cell already met each other when they were still an erythroblast and a myelocyte (basically children cells) when a bacteria attacked the bone marrow they were staying in. However, they only met that once so they don't remember each other's faces when they met again as adult cells.
135** He also once met Basophil when he was still a myelocyte. He was under the impression that Basophil was an Eosinophilic Band Cell.
136* FriendToAllChildren: Always shows his soft side whenever he interacts with the Platelets.
137* GoodIsNotSoft: Around friendly cells he is a very decent guy, especially compared to most other immune cells, but put him near a pathogen and he won't hesitate to pepper his attack with vicious insults. Even when he [[spoiler:took the time to show [[OOCIsSeriousBusiness a moment of compassion toward Cancer Cell]] by hearing out his final words, he remained stone-face throughout and reminded him quite frankly afterward that he still must be killed for the sake of the body's safety.]]
138* GoThroughMe: Has done this many times, putting himself in harm's way to protect other defenseless cells. The first instance dated all the way back to when he was [[KidHero a kid myelocyte]] where he saved young Red Blood Cell back when she was an Erythroblast.
139* HarmlessElectrocution: Is electrocuted by Staph A's fibrin when she uses coagulase to incapacitate them. While severely wounded and dazed, he is still alive by the end of the ordeal.
140* HighPressureEmotion:
141** When he's exposed to embarrassing photos of his past.
142** Additionally, when he realized his beloved Band-Cell Senpai was actually still alive as Basophil and had heard ''all'' the embarrassing admiration U-1146 had made about him.
143* HisNameReallyIsBarkeep: His full name is "White Blood Cell U-1146, Neutrophil Division".
144* HitmanWithAHeart: Will kill germs without remorse, but has shown his soft side to other cells he knows, especially AE-3803. He also shows concern to his teammates and even understands Cancer Cell's plight which endears him to the latter.
145* HumbleHero: Whenever he is thanked for his efforts in protecting the body and the other cells, he answers that he's simply doing his job.
146* IDidWhatIHadToDo: He feels sorry for Cancer Cell, but has to kill him for the sake of the body. Cancer Cell understands this reasoning, but will not go down without a fight.
147* KaraokeBox: According to one of the embarrassing photos of Dendritic Cell, he enjoys karaoke in his free time. In the photo, he is caught by Basophil, of all people.
148* KidHero: Even back when he was a myelocyte, he tried to defend Erythroblast (young Red Blood Cell) from a bacteria in the bone marrow, with nothing but a toy rubber knife as his weapon.
149* KillItThroughItsStomach: Does this to an unfortunate ''Vibrio parahaemolyticus'' bacteria who has the bad idea to eat him in chapter 5.
150* LightIsGood: Wears (and is) entirely white, and, behavior and appearance aside, he is a decent cell who fights for the well-being of the body and its inhabitants. Applies to the rest of the neutrophils as well.
151* LikeBrotherAndSister: With Eosinophil, his childhood friend from cell school. As adult cells, they both regard each other fondly, and have shared mutual experiences.
152* MoodSwinger: According to U-4989 in chapter 26, he's the most emotional in the squad, swinging from joy to sorrow over trivial matters. In the beginning of the chapter, U-1146 vows to do his job without emotion and spends the rest of it excitedly watching the platelets work and yelling words of encouragement to Backwards-Cap platelet.
153* MrExposition: Typically provides answers and explanations to Red Blood Cell's questions regarding the different cells they meet.
154* NonStandardCharacterDesign: Compared to everyone else, White Blood Cell looks like he belongs to a completely different anime, with featureless black eyes lacking light and unnaturally white skin while everyone else has a more realistic skin tone.
155* NoSocialSkills: He has his moments, such as during episode 1, when [=AE3803=] thanked him for saving her:
156-->"{Stoically} No need to thank me. [[ItsWhatIDo I was only doing my job.]]
157-->[Beat]
158-->"[[VerbalBackspace No, I mean]] You're welcome."
159* NotHelpingYourCase: It is difficult for [=AE3803=] to convince others that he's not a savage thug when he's tearing apart pathogens with his bare hands and teeth.
160* NotQuiteDead: During the Cancer cell fight, Neutrophil is seen going motionless and seemingly dies under some rubble. It turns out he is just resting though.
161* NotSoAboveItAll: Although he tries to maintain a professional soldier-like manner, he does soften up and act friendly towards Red Blood Cell.
162* NotSoStoic:
163** While he usually keeps a calm and almost aloof demeanor, he's smitten by the Platelets like everyone else.
164** He has a habit of breaking out rather lovely smiles whenever he's enjoying his downtime with Red Blood Cell.
165** He was a lot more emotional back when he was a Myelocyte, yelling out his catch phrases at the top of his voice.
166** He lost his cool demeanor when Dendritic Cell throws an embarrassing pic at him.
167* OnlySaneMan: He doesn't get involved in the squabbles of Killer T Squad Leader and NK, and tries to serve as a mediator to break up their fights.
168* PrecociousCrush: As a myelocyte, he greatly admired Basophil as a band cell, going so far as to give him leftover food and mourning his (seeming) loss.
169* TheReasonYouSuckSpeech: Along with U-4989, U-2048 and U-2626, he taunts the campylobacter on their faults, before assaulting them.
170* RedOniBlueOni: The calmer and more serious blue to Red Blood Cell's overemotional red.
171* RousingSpeech: To NK Cell when she gets weakened by stress.
172--> '''Neutrophil''': "NK!! Don't stop believing in yourself! We're pros! We've trained for this! If we work together, we can defeat any enemy!! Put your heart into it!! Get up!! Get up and run!!"
173* SeekerWhiteBloodCells: White Blood Cells are quick, brutal, and efficient in their line of work.
174* SensitiveGuyAndManlyMan: The Sensitive Guy to Killer-T's Manly Man. He enjoys hanging out with other cells in the body and would like for them to understand and not be afraid of the immune cells, a sentiment which earned him a punch in the face when shared with Killer T. He has an especially big soft spot for AE-3803, to the point where he is willing to set time aside from his work to help or talk to her, something that Killer T wouldn't be caught dead doing. {{Downplayed}}, however, as he's still just as much of a tough-as-nails soldier as Killer T ever was and never once lets his soft side interfere with that.
175* SeriesMascot: While he and Red Blood Cell more or less share equal protagonist status, White Blood Cell is the one to consistently appear on the covers of the manga volumes.
176* ShipTease: For whatever reason; despite being cells, belonging to the same body, etc., U-1146 and [=AE3803=] have these kind of interactions.
177* SlasherSmile: The White Blood Cells are normally laid-back people, but when they encounter a bodily invader, they turn into ruthless, psychotic killers.
178* SoProudOfYou:
179** His reaction when the [[NoSenseOfDirection directionally challenged]] Red Blood Cell finally manages to navigate the entire circulation system on her own.
180** He shows this again when he sees how determined Red Blood Cell is to be a good senpai to her kouhai.
181* TheSquad: Seems to form a squad, or patrols the same sector as U-4989, U-2048 and U-2626. This makes sense in terms of effective cohesion, as the four of them have been together since childhood.
182* StalkerWithoutACrush: ShipTease bordering on StalkerWithACrush levels aside, he followed [=AE3803=] across her journey to complete a circulatory cycle, guiding her without being seen and protecting her from enemies. He even defends her from Killer-T Cell when he scoffs at her efforts.
183* TheStoic: He is serious and professional most of the time, the only exceptions being when he is dealing with invaders or [[CutenessProximity when he sees the Platelets]].
184* StunnedSilence: While not quite silence, Neutrophil is only able to utter "Eh? Eh?" in astonishment after [[spoiler: being punched by Killer T Squad Leader.]]
185* SuperPersistentPredator: It's in his nature as a White Blood Cell, but his microbe-detecting receptor and his ability to transmigrate through cell tissue allow him to chase germs to the ends of the body.
186* SurprisinglyEliteCannonFodder: Neutrophils are the first line of defense of the immune system and they are not expected to last long against external threats. U-1146, however, thanks to both experience and luck (as well as his professionality and determination), manages to survive every kind of deadly situations (including some incidents where numerous other neutrophils have died, like the pimple incident in chapter 14), making him a tough individual of his kind.
187* TakingTheBullet:
188** In episode 8, he blocked a bacteria's spikes with his arm to protect [=AE3803=].
189** [[spoiler: In chapter 23, he took a surprise attack meant for Killer/Memory-T. This allowed Cancer Cell to capture him in a container making him unable to help NK and Memory-T from Regulatory-T's beatdown.]]
190* TranquilFury: Combined with a DeathGlare when he finally catches up with the Bacillus Cereus. He takes his sweet time killing the bacterium.
191* TwoGuysAndAGirl: [[https://imgur.com/a/NDSTeJA With Killer T Squad Leader and NK.]] Acts as the mediator of the group.
192* WhatTheHellHero: To NK Cell when she tricks Killer T Squad Leader into running into antibody fire.
193* WhenSheSmiles: While he is serious most of the time, he can put some nice smiles from time to time. One example being chapter 10, when he explains to Killer T Cell that it would be nice if, someday, red blood cells and cells of the immune system would get along well despite their differences.
194* WhiteShirtOfDeath: His stark white hair, skin, and clothes make the blood that gets spilled onto them look very obvious.
195* WorfHadTheFlu: He had a hard time catching the Bacillus Cereus thanks to suffering heat stress. Once he was able to cool off, he has no trouble dispatching it.
196[[/folder]]
197
198!Immune System
199
200[[folder:Killer T Cell (Squad Leader)]]
201[[quoteright:230:https://static.tvtropes.org/pmwiki/pub/images/killer_t_cell_anime.png]]
202[[caption-width-right:230:[[labelnote:Click here to see him as a T-Cell Trainee]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_02_at_105748_am.png[[/labelnote]]]]
203
204->'''Voiced by:''' Creator/DaisukeOno, Mariko Higashiuchi (as a thymocyte) (Japanese), Creator/RobbieDaymond, Creator/KimlinhTran (as a thymocyte) (English)
205
206A Killer T Cell. Like other cells of his ilk, he is responsible for killing infected, cancerous, or otherwise damaged cells. Sometimes referred to as '''Killer T Cell Squad Leader''', as he's usually seen leading other T-Cells. He is rather harsh and takes his job very seriously.
207----
208* AuthoritySoundsDeep: He's a FrontlineGeneral who fights off invading germs and his voice is so deep that he borders on being a raspy one
209* BeingPersonalIsntProfessional: He gets angered at White Blood Cell upon hearing the latter get all sappy and admiring the work of Red Blood Cell. He punches White Blood Cell to the ground and lectures him that as immune cells, they are assassins who would never hesitate to kill and should never partake in sentimental activities like other cells do. However, it's implied that this is mostly because [[GreenEyedMonster he's jealous of other immune system cells for being able to get along well with civilian cells]].
210* BerserkButton: Having embarrassing pictures of himself as a T Cell trainee being shared, when NK pushes him into the water/making him run into a cart, when he sees Neutrophil getting along with "non-immune" cells, to name but a few.
211* CallingYourAttacks:
212** Has one when he was a kid, which he is embarrassed when Helper-T shouted it in his test.
213--->'''Helper T Cell''': "Ultimate Secret Technique! Antigen Super Pummeling Smashing Fist!"\
214'''Killer T Cell''': "How the hell did you know that?"
215** He's shown to have prepared another called attack in the [[spoiler: Return of Cancer Cell arc]]:
216--->'''Killer T Cell''':"T-Cell Perforin Cannon Punch!"
217* CaptainSmoothAndSergeantRough: The latter in this case, as a subordinate of Helper T Cell. Killer T Squad Leader tends to be loud and brash with his fellow Killer T Cells and downright harsh with the naive cells under his trainee. This is in stark contrast to the more "refined" Helper T Cell.
218* ChildhoodFriends: While not exactly friends, he was in the same graduating class at Thymus school along with Helper T Cell and Regulatory T Cell.
219* {{Crossdresser}}: Can be seen in a dress in one of Dendritic Cell's photos.
220* CrossPoppingVeins: Put him and NK together, and you get this quite often.
221* CurtainsMatchTheWindows: Has dark yellow eyes and blond hair.
222* DarkIsNotEvil: Despite wearing black and [[GoodIsNotNice being kind of an ass]], he fights for the well-being of the body and its inhabitants. Applies to the rest of Killer T Cells as well.
223* DivingSave: Does this for Neutrophil and NK during the Cancer II Arc. Explained by Killer T being able to predict Cancer Cell's attacks.
224* DrillSergeantNasty:
225** Is this to Naive Cells. He calls his trainees maggots and throws one of them into a window on the second floor of a building ''from the ground'', and also belittles Naive Cell when he's unable to kill even one influenza cell.
226** Additionally, his training regimen includes of at least 1,865 pushups, 2,466 sit-ups and 3,580 pull-ups.
227--->'''Killer T Cell''': "We don't need wimps in the T Cell squad!!! T Cells are the last resort of the immune system! Do you take that seriously maggots!!?! You think a last resort can be weak?!! Train hard you morons!!!
228* EmergencyWeapon: Kinda inverted in a way: Killer T mainly uses his fists to eliminate foreign threats, but he pulls out a knife when trying to kill Cancer Cell.
229* FireForgedFriends: With Neutrophil and NK Cell during the Cancer arcs.
230* FrontlineGeneral: He's commander of the T-cells and fights with them on the frontlines unlike Helper T-Cell who gives orders from behind a desk.
231* GoodIsNotNice: Despite his rude behavior and abrasive personality, he plays an important role inside the immune system and is a professional who tries his best to defeat threats that can damage the body.
232* GoodOldFisticuffs: Unlike other immune cells, T-cells like him, Effector, Helper, and Regulator fight with their bare fists.
233* GratuitousEnglish: Killer T Cell uses one [[MakesSenseInContext or two]] when addressing Naive T Cell. His subordinates do so more often.
234-->'''Random T Cells''': "Yes sir!"
235* GreenEyedMonster: He's not jealous at all that White Blood Cell can have such a friendly relationship with civilians like Red Blood Cell. Nope, no siree.
236* HandBlast: His "secret attack" move is essentially using the force of his punch to generate a wave the size and shape of an enormous fist.
237* HardWorkHardlyWorks: Averted. His determination in staying at boot camp and becoming a full fledged T-Cell pays off. Although he did get Helper-T's help at the positive selection test.
238* HeadbuttingHeroes: This with NK Cell and Helper T Cell. Based on their shared origins as NK/T Progenitors, this could also be construed as SiblingRivalry.
239* LargeHam: Extremely hammy and makes sure to let his presence be known when charging at invading pathogens.
240* LightningBruiser: Can hit fast and hard enough to make an Influenza Virus go splat.[[spoiler: After promoting to a Memory Cell, he can punch fast enough that even Cancer Cell cannot dodge his attack.]]
241* MegatonPunch: At Thymus, Killer T was tricked into practicing a move that did not exist. [[BeyondTheImpossible He managed to perfect this imaginary technique]] and used it on Cancer Cell to devastating effect.
242-->'''Killer T Cell:''' "Take THIS! T Cell [[https://en.wikipedia.org/wiki/Perforin Perforin]] Cannon Puuunch!!"
243* MildlyMilitary: The T Cells seem to be this as opposed to the White Blood Cells being policemen, though the former are dressed more like SWAT officers than soldiers.
244* MySignificanceSenseIsTingling: When Dendritic Cell is showing Naive T-Cell embarrassing old photos of the older T Cells from their younger days, at the same time, the T Cells immediately start getting goosebumps and chills.
245-->'''Killer T Cell:''' It feels like the dark past that we sealed away has been released!!
246* NotQuiteDead: During the Cancer cell fight, Killer T Squad Leader is seen going motionless and seemingly dies under some rubble. It turns out he is just resting though.
247* NotSoAboveItAll: Despite his no-nonsense attitude and professionalism, he gives up and joins the Ordinary Cells in their badminton play at the end of chapter 11.
248* PrescienceByAnalysis: When he becomes a Memory T Cell against Cancer Cell the Second, having previously battled against Cancer Cell.
249* RankUp: The Killer T Cell is shown to have been promoted to Memory T Cell during the Lactic Acid Bacteria Arc. NK and U-1146 still calls him Killer-T.
250* RuleOfPool: Killer T Cell gets kicked into a pool... of large intestinal fluid by none other than NK Cell.
251* SensitiveGuyAndManlyMan: The Manly Man to U-1146's Sensitive Guy. He believes that every immune cell should be able to strike without remorse and that being friends with other cells will not let them do their jobs properly. He also is very ruthless in killing enemies, and during training, he threatens his team to be sent to the spleen if they fail.
252* SergeantRock: Is referred to as a Killer T Cell squad leader (Chapter 19), basically embodies the trope as a whole.
253* SitcomArchnemesis: He has this dynamic with NK Cell despite both being Immune Cells that protect the body. Usually Killer-T is the target of NK's harassment, though he will fight back when provoked enough. But when push comes to shove, they can work together quite well, [[spoiler: as seen in the Return of Cancer Cell arc.]]
254* TookALevelInBadass:
255** His backstory is basically this. He was at first a weak and fearful Naive T Cell, but training and experience eventually shaped him into one of the biggest badasses of the immune system.
256** He undergoes another one when he is [[spoiler:promoted to Memory T Cell in the second Cancer arc, being able to throw a punch that shoots shockwaves in the shape of a fist.]]
257* TrainingFromHell: Throws one of his trainees into a window. Justifies this to Helper T Cell by saying he doesn't want wimps for fighters, incapable when they actually have to fight bacteria. In a way, this is TruthInTelevision, as, in a body that's healthy, only a small fraction of immature T-Cells should actually survive the "training" they get in the thymus. Additionally, his training regimen includes at least 1,865 pushups, 2,466 sit-ups and 3,580 pull-ups.
258* {{Tsundere}}: A platonic Type A (Harsh). A DrillSergeantNasty who belittles the idea of immune cells befriending non-immune cells, but it’s obvious he’s in denial about his own desire to have non-immune cell friends.
259* TwoGuysAndAGirl: [[https://imgur.com/a/NDSTeJA With Neutrophil and NK.]] Acts as a foil to NK.
260* VolleyingInsults: Hand slipping and senility with NK Cell.
261--> '''NK Cell:''' Oops! My hand slipped!\
262'''Killer T Squad Leader:''' My bad, my foot slipped!\
263'''NK Cell:''' Sorry! My elbow slipped!\
264'''Killer T Squad Leader:''' That's too much slipping! You going senile or what?\
265'''NK Cell:''' You're one to talk!\
266'''Killer T Squad Leader:''' I'm gonna kill you!\
267'''NK Cell:''' Huh! I'd like to see you try it!
268* WouldHitAGirl: Dishes out some pretty vicious blows to NK Cell during their fight. To be fair, she started it.
269[[/folder]]
270
271[[folder:Macrophage / Monocyte]]
272[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/macrophage_anime.png]]
273[[caption-width-right:350:[[labelnote:Click here to see her as a Monocyte]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_08_at_14418_pm.png[[/labelnote]]]]
274
275->'''Voiced by:''' Creator/KikukoInoue (Japanese), Creator/LauraPost (English)
276
277A Macrophage cell, referred to as '''Macrophage'''. A type of white blood cell, she has many roles within the immune system, and is depicted as a sweet and motherly woman in a maid outfit who wields a meat cleaver with terrifying ease.
278----
279* ActionGirl: Oh so much. Just ask those outside organisms butchered by her.
280* AstonishinglyAppropriateAppearance: Macrophage is very tall and wears a large hoop skirt; real macrophages are very large compared to other cells.
281* BadassTeacher: Macrophages are also in charge of teaching and training young erythroblasts as they differentiate and mature into red blood cells. Combined with their combat skills, they also serve as their protectors. This is true of real life Macrophages, which are antigen presenting cells, and thus help 'teach' the body to create antibodies and other means of destroying a specific pathogen.
282* BewareTheNiceOnes: She might be one of the kindest characters in the series, being protective and motherly, but she's one of the most powerful immune cells around and can cut up germs with ease.
283* {{BFS}}: Her weapon is a giant meat cleaver. It's thick enough for her to leave it [[SwordPlant standing upright]] despite not having a pointed head.
284* BigDamnHeroes:
285** In chapter 15, when the neutrophils are about to be [[spoiler:killed by the fused form of the ''Staphylococcus aureus'', she and other macrophages emerge from the blood stream (as monocytes) just in time to finish the bacterium and save the day.]]
286** In episode 7 of the anime, just as Killer T Cell, NK Cell, and White Blood Cell look done for at the hands of [[spoiler:Cancer Cell, she throws her cleaver and hits one of his wings, signalling the arrival of TheCavalry.]]
287* BigEater: Extra material from chapter 21 about phagocytosis reveals that she eats a lot of germs. This likely alludes to how her name literally means "big eater" in Greek.
288* CatchPhrase:
289** As a Macrophage: "Ara ara..." / "Oh, my...", as well as "Minasan..." / "Everyone..."
290** As a Monocyte: "Nice."
291* CoolBigSis: In addition to being a caretaker to the young erythroblasts, she's also very motherly and protective to pretty much every cell she comes across.
292* CurbStompBattle: [[spoiler:She and her squad give one to the ''Staphylococcus aureus'' of chapter 15. The poor bacterium didn't stand a chance...]]
293* CuteAndPsycho: A very beautiful woman... who is also very enthusiastic in killing whatever thing invades the body.
294* DanceBattler: She spins and twirls gracefully as she cuts and smashes bacteria invaders up, all with a sweet smile on her face.
295* DissonantSerenity: She doesn't drop the maid mannerism while in the middle of butchering a whole ZombieApocalypse.
296* DoAnythingSoldier: She functions as a soldier, janitor, daycare worker, teacher, cook, and even a spy!
297* TheDreaded: Best shown in chapter 15. [[spoiler:The [[OhCrap revelation]] that they're dealing with Macrophages is enough to get all but one of the surviving ''Staphylococcus aureus'' to [[ScrewThisImOuttaHere flee in terror]].]]
298* EatingTheEnemy: The cleaver is not merely for show. Microbes that are too large for other white blood cells to eat are cut by Macrophage into smaller pieces and thrown into a cooking pot for consumption.
299* GirlWithPsychoWeapon: A maid dragging around a giant, crooked meat cleaver. Other Macrophages are shown wielding equally psychotic weapons like axes or hammers.
300* HazmatSuit: Macrophages wear these when they occupy their alternate role as monocytes and patrol the blood stream.
301* HiddenBuxom: She's quite well-endowed, and how she and the other Macrophages manage to hide their figures while in Monocyte mode is anyone's guess. Justified since Hazmat equipment is quite bulky and feature concealing, and in her own words, "a maiden has to have a secret or two".
302* HollywoodAcid: Monocytes carry sprays that easily dissolve bacterial invaders.
303* ImprovisedWeapon: In "Common Cold," the Macrophages' weapons are replaced with sports equipment, including a tennis racket and surfboard. They use them anyway to eradicate the cold-infected cells.
304* KickingAssInAllHerFinery: Slaughters bacteria with a meat cleaver while wearing a maid dress with a huge poofy skirt.
305* LadyOfWar: Never ceases to be the embodiment of feminine charm, even when brutally slaughtering hordes of pathogens. Taken to [[ExaggeratedTrope hilarious extremes]] in episode ten, in which [[spoiler:every blow the macrophages deal against the invading army of Staphylococcus bacteria is punctuated by cherry petals and anime sparkles.]]
306* MasterOfAll: "All" is an overstatement, but the sheer diversity of the roles she can perform is still astounding. Even '''more''' astounding is that she is also extremely good at every single thing she can do. This is actually TruthInTelevision, as real life Macrophages perform numerous jobs and are incredibly versatile.
307* NewJobAsThePlotDemands: She's a daycare worker, a cleaner, and also an assassin. While it's not emphasized, she also plays a role in gathering information on antigens, making her a spy as well! Justified, as [[ShownTheirWork real life Macrophages are incredibly versatile cells]] that perform numerous roles.
308* NinjaMaid: The macrophages are depicted as gentle women in maid dresses who are constantly smiling. They also wield large weapons like machetes and can easily slaughter bacteria and other invaders.
309* OlderThanTheyLook: Assuming it's the same one, this particular Macrophage was shown to have been around since [=AE3803=] was an erythroblast and when Killer T Squad Leader, Regulatory T Cell and Helper T Cell were young Killer T Cell Trainees. It appears that she also taught NK Cell when the latter was a Cell School student.
310* OneManArmy: She can easily kill groups of enemies all by herself, as shown when she easily kills many influenza-infected cells without a sweat. Now imagine a crowd of macrophages ganging up on bacterial invaders...
311* PerpetualSmiler: She's virtually always seen smiling.
312* SamusIsAGirl: When she's [[spoiler:patrolling the blood vessels, she takes the role of a Monocyte. As in, those guys in the {{Hazmat Suit}}s that completely obscure their faces, figures, and gender. Monocytes patrol the bloodstream after maturing in the bone marrow and become macrophages after going outside the bloodstream and into a nearby tissue.]] [=AE3803=] is flabbergasted when she finds that out.
313* SilkHidingSteel: Appears very demure, polite, elegant, and wears elegant dresses. Also one of the most powerful and combat-effective cells in the entire body when it comes to fighting harmful organisms.
314* SwordDrag: Does it with her meat cleaver in the beginning of episode 3.
315* UnflappableGuardian: Nothing anyone does seems to break her normal demeanor. Someone swapped all her weapons for sports equipment? She's strong enough even without her weapons, so this might be a nice change of pace. Trying to blackmail her with embarrassing photos of her past? How nice, [[BlackmailBackfire a lovely trip down memory lane.]]
316* TomboyAndGirlyGirl: Within the context of the Immune System, she's the girly girl to NK's tomboy -- NK being far rougher in demeanor than she is, and often butt-heads with other immune cells.
317[[/folder]]
318
319[[folder:Helper T Cell / T Lymphocyte]]
320[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/helper_t_cell_anime.png]]
321[[caption-width-right:350:[[labelnote:Click here to see him as a T Cell Trainee]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_28_at_71523_am.png[[/labelnote]]]]
322
323->'''Voiced by:''' Creator/TakahiroSakurai, Creator/MikakoKomatsu (as a thymocyte) (Japanese), Creator/RayChase, Creator/ErikaHarlacher (as a thymocyte) (English)
324
325A Helper T Cell, sometimes referred to as '''Helper T''' or '''Helper T Commander'''. He is responsible for coordinating the immune response to specific threats.
326----
327* ArtisticLicenseBiology: From a real life perspective, Helper T Cells do not directly combat pathogens and only direct other immune cells to the site. However the ''Cells at Work'' version of Helper T Cell is revealed to be quite capable of combat himself and at one point was strong enough to beat up Killer T Cell. (Then again, these cells go through the same [[TrainingFromHell training]] as all the other T Cells do...)
328* AsskickingLeadsToLeadership: He didn't become commander by being a slouch. He graduated at the top of his class at Thymus School and can still lay a beatdown if the time comes.
329* BerserkButton: Having embarrassing pictures of himself as a T-Cell trainee being shared.
330* CaptainSmoothAndSergeantRough: The former in this case, as the superior of Killer T Cell. Helper T is rarely seen outside of his office, and gives orders from behind a desk. He is often seen drinking tea and eating snacks. This is in stark contrast to the rougher behavior of Killer T Cell Squad Leader.
331* ChildhoodFriends: While not exactly friends, he was in the same graduating class at Thymus school along with Killer T Cell and Regulatory T Cell.
332* HeadbuttingHeroes: This with Killer T Cell. Based on their shared origins as NK/T Progenitors, this could also be construed as SiblingRivalry.
333* HiddenBadass: He used to be one of the best T Cell trainees, and could easily beat up the now Killer T Cell. However, as a Helper T Cell, he is never involved in combat, and spends most of his time drinking tea in the control room. However he hasn't really lost his combat skills, it's just that he rarely has the chance to show it.
334** Chapter 12 emphasizes this by referring to Helper T's physique as "loose," compared to Killer T's "Flex."
335--->'''Killer T Cell''': "You're just sipping tea when we're putting our lives on the line out there!"\
336'''Helper T Cell''': "Oh come oooooooon. Office work is pretty hard. You wanna try it? You wanna swiiitch?"
337** But right after this exchange, Helper T Cell shows that he hasn't lost all his combat moves as he and Killer T Cell gang up on Dendritic Cell in the hopes of confiscating (and burning) all the embarrassing photos of their Thymus school days.
338* JerkWithAHeartOfGold: Was this during his time as a thymocyte. He was rude and abrasive with his partners, but still gave advice to the thymocyte who would become the Killer T Cell Squad Leader after seeing his desire to become stronger. Not applied to his current status as Helper T Cell, as he is now polite and professional.
339* NonIndicativeName: Is depicted as a commander rather than a 'helper'. TruthInTelevision as many cell biologists have stated the naming of Helper T Cells is very misleading and not representative of their actual function.
340* OfficerAndAGentleman: Drinks tea often, dresses and functions like a commander, and spends all his time in the office.
341* StrongerThanTheyLook: He looks and acts like an intellectual nerd, but as a trainee, he was actually stronger than Killer T Cell.
342* SweetTooth: He's often seen eating cookies with his tea, and puts lots of sugar into his drink.
343[[/folder]]
344
345[[folder:Regulatory T Cell]]
346[[quoteright:165:https://static.tvtropes.org/pmwiki/pub/images/regulatory_t_cell_anime.png]]
347[[caption-width-right:165:[[labelnote:Click here to see her as a T Cell Trainee.]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_02_at_103624_am.png[[/labelnote]]]]
348
349->'''Voiced by:''' Creator/SaoriHayami (Japanese), Creator/EricaMendez (English)
350
351A Regulatory T Cell, who acts as an assistant to Helper T Cell. This is reflective of their real-life role as immune system modulators. She is sometimes called '''Ms. Regulatory T Cell'''.
352----
353* AbnormalLimbRotationRange: Is apparently able to rotate her entire body to the side at a 120 degree angle to the right. Aforementioned action was accomplished within a split second, and without moving her feet.
354* ActionGirl: She survived the TrainingFromHell when she was a kid. [[spoiler: This is shown in full force in the Return of Cancer Cell arc, as she's able to beat up both Killer-T and NK Cell.]]
355* BrokenRecord: "No you mustn't attack a cell."
356* ChildhoodFriends: While not exactly friends, she was in the same graduating class at Thymus school along with Helper T Cell and Killer T Cell.
357--> '''Regulatory T Cell''': "Those two... ...really haven't changed a bit..."
358* CurtainsMatchTheWindow: Has blonde hair and yellow eyes.
359* EmotionlessGirl: Does just about everything deadpan, even as a T Cell Trainee. She retains the same attitude in [[spoiler:the Cancer Cell II Arc, but she's shown to be NotSoStoic right before she dodges Killer T's attack.]]
360* ExcuseMeWhileIMultitask: During the Cedar Pollen Allergy arc, she can be seen holding three phones at once, two in one hand, and one against her head.
361* FaceMonsterTurn: She protects [[spoiler:Cancer Cell the Second under the impression that he's a regular cell.]] However, she realizes her mistake when Memory T Cell manages to land a giant hit. This is representative of the way real life regulatory T cells are attracted and trafficked to [[spoiler:cancerous tumors, hindering the body's immune response to cancer and creating poor prognosis in many cancers.]]
362* GirlFriday: Acts as the more level-headed assistant and aide to Helper T Cell.
363* HighSpeedMissileDodge: Does this when Killer T [[spoiler:unleashes his "T-Cell Perforin Cannon Punch". Literally bends over by a full 120 degrees to her right without moving her feet, to avoid being hit by Killer T's attack.]]
364* HypercompetentSidekick: While commander Helper T Cell is no slouch, no one was expecting just how much ass Regulatory T Cell was able to kick during the Return of Cancer arc. [[spoiler: She's able to fend off attacks from NK and Killer T Squad Leader simultaneously, two of the more competent and lethal immune cells.]]
365* KickChick: Uses her hands exclusively for blocking, while snapping out kicks to attack, including flip kicks and handstand kicks.
366* MagicSkirt: Doesn’t show anything, despite her high-kicking fighting style.
367* NotSoStoic: Regulatory T Cell deflects much of the attacks on Cancer Cell by Killer T quickly, efficiently and according to herself, without emotion. However when [[spoiler:Killer T announces that he's about to unleash his T-Cell Perforin Cannon Punch, she has a flashback to her time in Thymus School as a classmate of Killer T, when he was initially "taught" the move. After this flashback, she drops her stoic expression and dodges the attack, allowing Cancer Cell the Second to be hit by the attack. Whether this was out of self-preservation or genuine emotional influence is up to the reader, though it is very much implied to be the latter.]]
368* NumberTwo: She tends to be the one who assists Helper-T cell in emergency situations.
369* ObstructiveBureaucrat: A literal example when she [[spoiler: physically obstructs and blocks attacks from Killer T Cell and NK Cell to defend Cancer Cell 2, since she believes him to be a normal body cell, and is obligated by her role to protect such cells.]]
370* OjouRinglets: Has two long ones on either side of her face. Had them ever since she was a T Cell Trainee.
371* PrimAndProperBun: She wears her hair in a bun, fitting with her calm and professional demeanor.
372* TheReasonYouSuckSpeech: Gives one to Killer T Cell when he tries to [[spoiler: get past Regulatory T Cell in order to attack Cancer Cell the Second]].
373--> '''Regulatory T Cell''': Yes... You've always been the same. Bad at strategy... and swayed by emotion. Unable to feed off victory, nor to rise above defeat. You've always been like that. You will never defeat me. Your struggle is futile. Give up and cease your attacks.
374[[/folder]]
375
376[[folder:Eosinophil]]
377[[quoteright:270:https://static.tvtropes.org/pmwiki/pub/images/eosinophil_anime.png]]
378[[caption-width-right:270:[[labelnote:Click here to see her as an Eosinophilic Myelocyte]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_17_at_30747_pm_0.png[[/labelnote]]]]
379
380->'''Voiced by:''' [[Creator/MaoIchimichi M.A.O.]] (Japanese), Creator/KayliMills (English)
381
382An Eosinophil Cell. Referred to as '''Eosinophil'''. Unlike other types of white blood cells, she's ineffective at killing bacteria and other pathogens (and is initially insecure about it), but can expertly eliminate parasitic organisms.
383----
384* ActionGirl: She can't kill a bacterium to save her life, but when it comes to eliminating parasites, she has no rival.
385* AdaptationalBadass: While the manga depicts her as an immune cell completely specialized for dealing with parasites, she can fight a cancer cell without any problems in the anime. Maybe the anime made this decision because Cancer is essentially a giant parasite, so Eosinophil would do just fine. This actually has some real life basis, as research does suggest Eosinophils may play a role in the body's anti-cancer response.
386* AwLookTheyReallyDoLoveEachOther: When she decides to take on the Anisakis worm on her own, the other cells try to stop her, stating that while they did make fun of her, no one actually wants her to die on what they believed to be a SuicideMission.
387* ChildhoodFriends: With Neutrophil. They grew up in the same bone marrow.
388* CripplingOverspecialization: She excels at slaying parasites, but is completely incapable of slaying even a single bacterium (which appear in the body much more frequently).
389* CurbStompBattle: [[spoiler: Gives an awesome one to the Anisakis worm. She slays it with just one hit of her weapon!]]
390* CurtainsMatchTheWindow: Has blonde hair and yellow eyes.
391* DavidVsGoliath: This basically defines her job description. When facing bacteria around her size that can be killed by any other white blood cell, she's completely hopeless, but against giant parasites that are almost invincible to other white blood cells, she can near effortlessly bring them down.
392* DeathbedConfession: As a child, she secretly noted down difficult phrases in her books and wrote poetry. She quietly admits she still does it as an adult. She notes how difficult it was to admit it, even in the face of her death.
393* {{Determinator}}: Despite knowing that she can't beat them, she never retreats when bacteria or other non-parasitic organisms are attacking the body, giving her best to try to defeat them. Unfortunately for her, in these cases, she ends up defeated and saved by other white blood cells.
394* EatingTheEnemy: The narration mentions she can do phagocytosis (a process when cells like neutrophils eat and delete bacteria and other external agents) just like the neutrophils. She, however, mentions that her phagocytosis is very weak. This is kind of reflected in her physical build: she's very thin and lightly built.
395* EmbarrassingOldPhoto: She gets incredibly shy when she gets praised. Apparently, she doesn't like people to see this side of her, as she quickly snaps after she realizes how she is behaving in front of the other cells after she defeats the anisakis, and Dendritic Cell has a photo of her blushing while being praised as a part of his embarrassing photo collection.
396* ForgottenFirstMeeting: She doesn't recognize Basophil as the sempai she admired when she was still a myelocyte. To be fair, she was under the impression that Basophil was an Neutrophilic Band Cell.
397* GirlishPigtails: Her hairstyle features two blonde twintails. It's very cute.
398* GlassCannon: Is pretty weak and gets knocked over after being struck twice by a lesser bacteria. However [[spoiler: she is able to one-shot Anisakis when the parasite appears.]]
399* HeroicSelfDeprecation: Eosinophil as pretty low self-esteem, which probably resulted from foreign bacteria and other cells looking down upon her and mocking her for her inability to effectively combat threats.
400--> '''Eosinophil''': "It's fine. I know that I'm weak. Thanks for saving me."
401* HeroWithBadPublicity: She works hard to protect cells from invading pathogens, and those cells like to whisper behind her back about how useless she is for failing every time. Fortunately, they change their tune once they see how effective she is against parasites; they all sing her praises and thank her for saving them.
402* HighPressureEmotion: When she realized her beloved Band-Cell Senpai was actually still alive as Basophil and had heard ''all'' the embarrassing admiration Eosinophil had made about him, her entire face turns bright red. Additionally, this happens whenever she gets praised.
403* LikeBrotherAndSister: With Neutrophil, her childhood friend from cell school. As adult cells, they both regard each other fondly, and have shared mutual experiences.
404* LuminescentBlush: Sports both this and BlushSticker while being praised after defeating the anisakis at the end of chapter 5/episode 4.
405* NotSoStoic: She always has a serious and melancholic expression (due to being mocked by other cells due to her uselessness when she fights against non-parasitic threats), but gets very shy and happy when she is praised.
406* PrecociousCrush: When she was still a myelocyte, she greatly admired Basophil as a band cell, going so far as to read difficult books with him and mourning his (seeming) loss. She also considered him to be very handsome.
407* ProngsOfPoseidon: Her weapon of choice is a bident, and based on the ''Anisakis'' she ends up facing, the parasites she's made to face have an aquatic beast theme to them.
408* SmurfettePrinciple: She is tangentially a part of U-1146's gang, and is the only girl in their group.
409* ThisLooksLikeAJobForAquaman: The chapter that introduces Eosinophil shows that while she's not very good at fighting bacterial infections, she excels at dealing with larger threats like multicellular parasites.
410* TookALevelInBadass: As a myelocyte, she was terrified of the bacteria puppets she trained against. Thanks to the guidance of U-1146 and gang, as well as Basophilic Band Cell, she was able to overcome her fears and fight bravely against bacteria (though she's not very good at it).
411[[/folder]]
412
413[[folder:Basophil]]
414[[quoteright:220:https://static.tvtropes.org/pmwiki/pub/images/basophilic_anime.png]]
415[[caption-width-right:220:[[labelnote:Click here to see him as a Basophilic Band Cell]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_08_at_14043_pm.png[[/labelnote]]]]
416
417->'''Voiced by:''' Creator/TomokazuSugita (Japanese), Creator/DCDouglas (English)
418
419A Basophil Cell. Referred to as simply '''Basophil'''. He is supposed to be a type of White Blood Cell yet no one is sure what exactly his job is, but he ''is'' good at giving wordy, long-winded speeches.
420----
421* ColdHam: He speaks in a bombastic and poetic way, but never raises his voice, even when outside organisms are attacking the body.
422* InTheHood: His outfit features a raincoat that covers his head with a hood.
423* KilledMidSentence: Non-fatal example in chapter 16. Just when he was giving Mast Cell a motivational speech when she was doubting herself after the complaints that the Ordinary Cells gave her previously in the chapter [[SesquipedalianLoquaciousness (in his own particular way, of course)]], he is blown away by the gust of a dengue-infected Langerhans Cell (along with Eosinophil) before he can finish his speech. He still manages to motivate Mast Cell, who saves the day at the end.
424* OracularUrchin: Due to his function being poorly understood, he's depicted as a creepy hobo who spouts poetic phrases about current events. Despite this, his ramblings are given a great amount of weight.
425* TheParagon: To Neutrophil and Eosinophil. For the former, Basophil taught him to think more deeply about his purpose in life. For the latter, Basophil taught her to note difficult phrases in her books, and influenced her to write poetry, even as an adult. For the both of them, Basophil's (seeming) sacrifice encouraged them to step forward into battle, despite the odds and certainty of the outcome.
426* ParasolOfPain: He always carries an umbrella (to cover himself from the histamine that Mast Cell releases), that is also implied to be his weapon of choice.
427* PrettyBoy: He has a delicate figure and long eyelashes. Eosinophil calls him handsome when they first met.
428* TheReveal: He is the [[spoiler:mysterious band cell senpai that a young U-1146 and Eosinophil befriend in chapter 27.]]
429* RousingSpeech: Gives one to Mast Cell in chapter 16 in order to motivate her after she was doubting herself after the numerous complaints that other cells gave to her due to [[DestructiveSaviour her way of acting]]. Of course, being Basophil, his long speech is confusing and ambiguous. Eosinophil interprets this as a way of telling Mast Cell to follow her own beliefs.
430* SesquipedalianLoquaciousness: His long-winded speeches sound like this, causing much confusion amongst other cells and forcing them to create their own interpretations of his messages.
431* WhatExactlyIsHisJob: All that's known for certain is he's supposed to be a type of White Blood Cell, but to what purpose is unclear.
432[[/folder]]
433
434[[folder:Natural Killer Cell ([=NK=])]]
435[[quoteright:230:https://static.tvtropes.org/pmwiki/pub/images/nk_cell_anime.png]]
436[[caption-width-right:230:[[labelnote:Click here to see her as a Cell School student]]https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_08_at_13759_pm.png[[/labelnote]]]]
437
438->'''Voiced by:''' Creator/ToaYukinari (Japanese), Creator/MorganBerry (English)
439
440A Natural Killer Cell. Often referred to as '''NK'''.
441----
442* ActionGirl: Any time NK encounters foreign organisms or cancer cells. It's emphasized by how she's often drawn with some serious muscle tone on her.
443* AloofDarkHairedGirl: She has short black hair and is considered a wild card by other cells and prefers to fight alone.
444* AmazonianBeauty: She has a well-built muscular body, even if nowhere near the level of Killer T Cells, but those muscles do nothing to prevent her from being just as attractive as the other "young adult female"-looking cells, though with more of a handsome feel than a cute or beautiful one.
445* AssKickingPose: Does this often in the second cancer cell arc. Is called out for it by Killer T Squad Leader.
446--> '''Killer T Squad Leader''': "Hey!! Untie us first before you strike a pose!!"
447* BerserkButton: Seeing a picture [[spoiler:of herself in a maid outfit from her childhood]] is enough to reinvigorate her from stress, sending her into a rage against anyone who might have seen the photo.
448* BlushSticker: Has this right after [[spoiler: defeating Cancer Cell]], as result of her laugh.
449* BombWhistle: Right before she lands on Killer T Squad Leader.
450* {{Chuunibyou}}: Implied to be one based on photos of her youth and while off-duty.
451* CrossPoppingVeins: Put her and Killer T Squad Leader together, and this will happen quite often.
452* CurbStompBattle: [[spoiler: Once she is properly activated with laughter (after throwing Killer T Cell to B Cell's antibody gun, mocking him), she defeats Cancer Cell easily with one strike of her saber.]]
453* CurtainsMatchTheWindows: Has dark gray eyes and black hair.
454* DeadpanSnarker: Her default state.
455* DeathGlare: Gives Killer T a terrifying one after he dumps a bucket of water on her head.
456* DissonantLaughter: During the duel with the cancer cell, NK activates herself by laughing.
457* ElegantGothicLolita: [[spoiler: Dresses like one as a Cell School student.]]
458* FireForgedFriends: With Killer T Cell Squad Leader and Neutrophil during the Cancer arcs.
459* GrayRainOfDepression: Has her own cloud when she [[spoiler: has trouble killing an antigen-shifted influenza virus.]]
460* HandGagging: Gives a rather forceful one to Neutrophil and Killer T Squad Leader at the same time, with her elbow and hand respectively.
461* HeadbuttingHeroes: This with Killer T Cell. Based on their shared origins as NK/T Progenitors, this could also be construed as SiblingRivalry.
462* HighPressureEmotion: When Dendritic Cell [[spoiler: exposes embarrassing images from her youth]], NK goes completely red. Same when Neutrophil catches her bemoaning about the aforementioned event.
463* JerkWithAHeartOfGold: Is cold, aloof and rude to her allies, and belittles Ordinary Cells. However, she cares about the well-being of the body, is genuinely shocked and worried about her allies when they get injured, and even [[spoiler:tolerates the presence of the Lactic Acid Bacterium and helps it find its way back home.]]
464* JustToyingWithThem: Immediately [[spoiler:sees through Cancer Cell's disguise, and plays along with him so that she can fight him one on one.]]
465-->'''NK Cell''': "I worked really hard to keep from laughing at your little act! You gotta try harder to make it worth my ti-"
466* LaserBlade: NK's saber becomes this after she gets activated by Dendritic Cell.
467* LuminescentBlush: Sports this when she is laughing.
468* MacheteMayhem: NK's way of dispatching cells with her saber, essentially.
469* MotiveRant: NK, tired of hearing Ordinary Cell's complaints about why immune cells must kill bacteria, delivers a rant to him and goes so far as to state that all the other cells would be long dead if immune cells weren't around. This speech shocks even Neutrophil, who chides NK.
470* NoblewomansLaugh: Gives Killer T Cell Squad Leader an "Ohohoho" while dragging away Cancer Cell.
471* NotQuiteDead: During the Cancer cell fight, NK is seen going motionless and seemingly dies under some rubble. She's just resting though.
472* OldShame: InUniverse. According to NK's reaction herself, she's implied to be a macrophage fangirl.
473* OneManArmy: NK has a habit of [[{{IWorkAlone}} working alone]], brushing off (sometimes forcefully) assistance from other immune cells. Holds her own fairly well against foreign organisms and cancer cells. [[spoiler: This is because she doesn't want other immune cells going up against something out of their league and ending up in harm's way.]]
474* PowerGlows: Has one when activated by laughter.
475* PrescienceByAnalysis: NK herself explains that this is how she's so effective against Bacterium and Cancer Cells. This is seen a bit in the intro to the anime where NK casually slashes at bacteria, sometimes without even looking at them.
476* SitcomArchnemesis: Has this dynamic with Killer-T Cell despite being Immune Cells. She usually goes out of her way to make his life miserable even in the face of danger. Although when faced with a tough enemy they can have an unspoken truce to defeat said enemy.
477* SlasherSmile: She makes a rather scary one in chapter 22 [[spoiler: when she sees a photo of her past in a cell school uniform (thrown by Dendritic Cell), threatening to kill anyone who has seen the photo.]]
478* SurroundedByIdiots: NK thinks this internally, when dealing with Neutrophil, Killer T Squad Leader and Ordinary Cell. Neutrophil even points out to Ordinary Cell that NK is especially sharp.
479--> '''NK Cell''': "They're morons, all of them."
480* TankTopTomboy: She wears a black tank top and shorts, fitting for a tomboyish ActionGirl.
481* {{Tomboy}}: Dresses and acts boyishly.
482* TomboyAndGirlyGirl: She's the tomboy to the Macrophage's girly girl. Unusually for this trope, Macrophages may be the only cells that rival her in badassery.
483* TomboyWithAGirlyStreak: If her past is anything to go by, [[spoiler:she enjoyed wearing feminine clothes, like lolita outfits.]]
484* TraumaButton: The shock of seeing a photo of [[spoiler:her younger self in a Cell School uniform]] causes her to attack her own allies, break her weapon, eat the aforementioned photo, and turn into a broken record.
485-->'''Neutrophil''': N-NK, what happened...?\
486'''B-Cell''': You cracked your precious saber...\
487'''NK Cell''': '''*eats photo*''' I'll kill anyone who saw it... I'll kill anyone who saw it...
488* TrueSight: Of a sort. In contrast to T Cells, NK Cells do not need antigen presentation and just kill cells (or rather, order them to) if they sense that the cell isn't displaying the MHC-1 protein, which is also where they get their name from. This is neatly represented in the anime by [[spoiler: T Cell not being able to see through Cancer Cell's disguise, but NK Cell being primed to confront him as she had already sensed something off about him (i.e him not displaying the aforementioned protein in real life)]].
489* UnsportsmanlikeGloating: Tricks Killer-T into running into B-Cell's antibody fire, and laughs for a full three panels. Somewhat justified, as laughter activates her, allowing her to finish off the cancer cell.
490* VolleyingInsults: Hand slipping and senility with Killer T Squad Leader.
491-->'''NK Cell:''' Oops! My hand slipped!\
492'''Killer T Squad Leader:''' My bad, my foot slipped!\
493'''NK Cell:''' Sorry! My elbow slipped!\
494'''Killer T Squad Leader:''' That's too much slipping! You going senile or what?\
495'''NK Cell:''' You're one to talk!\
496'''Killer T Squad Leader:''' I'm gonna kill you!\
497'''NK Cell:''' Huh! I'd like to see you try it!
498* TwoGuysAndAGirl: [[https://imgur.com/a/NDSTeJA With Neutrophil and Killer T Squad Leader.]] Acts as a foil to Killer T.
499* WorfHadTheFlu: [[spoiler: She was unable to kill a new strain of Influenza Virus cause of stress. An old photo from Dendritic Cell snapped her out of it.]]
500[[/folder]]
501
502[[folder:Memory B Cell]]
503[[quoteright:215:https://static.tvtropes.org/pmwiki/pub/images/memory_cell_anime.png]]
504->'''Voiced by:''' Creator/YuuichiNakamura (Japanese), Creator/DavidVincent (English)
505
506A Memory B Cell. Often referred to as '''Memory Cell''', or simply '''Memory'''.
507----
508* AbsentMindedProfessor: Ironically is this, despite having Memory in his name. Consults notes often and forgets or has a delayed reaction regarding immunization and identification.
509* {{Chuunibyou}}: Of the "Desperately trying to convince everyone they're a wizard" variety during the "Aquired Immunity" chapter. While his dream about Mumps makes him *think* he's a prophet, it comes across as a kid trying to open a supposedly-uncooperative (read: entirely nonexistant) Third Eye.
510* ComicalOverreacting: His reaction to almost any and all occurrences in the body.
511* FailedAttemptAtDrama: He dramatically drops an ominous-sounding prophecy to White Blood Cell...before realizing that he forgot it, so he has to run back and get his notes before reattempting the dramatic announcement. White Blood Cell humors him.
512* HeadDesk: Starts banging his head against the wall in Episode 12, when he realizes he can't remember a thing. Does this to the point of actual bodily injury.
513* IronicName: Is called ''Memory'' B Cell, but in his own words, he "can't remember a thing".
514* NervousWreck: The presence of Cedar Allergens is enough to make him FreakOut. He even continues spouting nonsensical prophesies even if it looks like B-Cell took care of the mess. [[DisasterDominoes He does, however, have good reason to be that way, since everything he described came to pass.]]
515* ProperlyParanoid: Initially, he looks like a deranged weirdo spouting words without any sense about some apocalyptic prophecy recorded by the previous Memory Cells. [[spoiler: His worry ends up being right when the things he says turn out to be a prediction of the allergic reaction, that causes lots of destruction.]]
516* PropheciesAreAlwaysRight: All the pieces of information that he remembers and predicts always end up happening. {{Justified}}, since the "prophecies" he has are actually reactions of the body or medical processes that happen regularly in the body and that were recorded by previous Memory Cells before him.
517* {{Seers}}: Apparently, he obtains the ability to predict the future in chapter 13, as he has a prophetic dream involving a meteor shower, cells fighting each other and a messenger from the outside world. [[spoiler: {{Subverted}} later in the chapter when it's revealed it's actually a memory from a vaccination against the mumps virus that happened long ago (the messenger from the outside being the vaccine, the meteor shower being the capsules where the weakened mumps-infected cells are contained, and the cells fighting each other being the cells of the immune system defeating the weakened viruses easily).]]
518* TheSmartGuy: Is expected to remember viruses and their counters, and is often seen reading books. His workstation is filled with articles and publications.
519* ThoseTwoGuys: With B Cell. {{Justified}}, as his memories of antigens are required to create the antibodies that B Cell shoots. Both of them share the same workspace, and apparently (based on Dendritic Cell's photos), they were roommates in cell school.
520* TorchesAndPitchforks: [[spoiler: On the receiving end of a very {{downplayed}} example by the Ordinary Cells at the end of chapter 13, after B Cell reveals that the reason why the white blood cells went through so much troubles against an enemy that they should had defeated easily is because he was so centered in predicting his vision that he wasted time to reveal that they already had antibody information to deal with the mumps.]]
521[[/folder]]
522
523[[folder:B Cell]]
524[[quoteright:295:https://static.tvtropes.org/pmwiki/pub/images/b_cell_anime.png]]
525
526->'''Voiced by:''' Creator/ShoyaChiba (Japanese), Creator/ErikKimerer (English)
527
528A B Cell[[note]]given his function, he is most probably a plasma cell.[[/note]]. An energetic young man responsible for employing antibodies against foreign substances.
529----
530* AmmunitionBackpack: His antigens are depicted as chem sprayers, complete with a tank of fluid on his back.
531* {{BFG}}: His main weapon. It shoots antibodies. Interestingly enough, he seems to be the only cell who possesses a firearm of any sort.
532* CaptainOblivious: B-Cell once cheerfully talked about how Memory Cell screwed up his job, resulting in a hard fight against the mumps virus, right after they conquered the invasion. In front of the exhausted normal and immune cells. With Memory Cell nearby... [[https://www.youtube.com/watch?v=ZnHmskwqCCQ Cue mob chase.]]
533* GreaseMonkey: B Cell dresses like one and is generally good-natured. He's also strong enough to wield the various Antibody devices. He can be seen tinkering with his gear at his workstation and uses a different gun every time he appears.
534* InterserviceRivalry: With Mast Cell. Both blame each other for the allergic reactions after doing their respective jobs.
535* LetMeAtHim: In anime, he's ready to fight Mast Cell about her histamine overload, especially since he was initially blamed for the allergy disaster.
536* LittleUselessGun: He attempts to kill an Antigen-Shifted Influenza virus with a handgun version of his antibody gun, which does absolutely no damage to the virus.
537* LuminescentBlush: He has this after being embarrassed by Dendritic Cell.
538* MacrossMissileMassacre: He apparently has the ability to release many missiles out of his backpack when he's activated, as shown in chapter 22.
539* MakingASplash: His antibodies are portrayed as water, making his {{BFG}} some kind of water gun.
540* ScrewThisImOuttaHere: [[spoiler: As soon as the influenza evolves to influenza A and realizes his antibodies don't cause any harm to it, he leaves the battlefield with the excuse that he needs to develop new antibodies. Be it justified or not, his allies don't buy his reason]].
541* ShortRangeGuyLongRangeGuy: He's the long ranged {{BFG}} wielder to the rest of the short range immune cells who fight up close with blades or fists.
542* ThoseTwoGuys: With Memory Cell. {{Justified}}, as B Cell's ability to fight relies entirely upon Memory Cell's records of antigens in order to create antibodies to shoot. Both of them share the same workspace, and apparently (based on Dendritic Cell's photos) were roommates in cell school.
543* TorchesAndPitchforks: On the receiving end, after it's believed he caused the allergic reactions.
544* UnfriendlyFire: Accidentally shoots Killer T during the cancer arc. In his defense, NK had misled Killer T to run in the direction of B Cell's fire.
545* VolleyingInsults: With Mast Cell. The scene is expanded in the anime:
546-->'''B-Cell''': Overproduction of histamines did the damage but nice try!\
547'''Mast Cell''': I did my job exactly how the manual said to!\
548'''B-Cell''': Well, then you must have read the manual wrong! Don't you know how to do your job without taking direction, ''Fatty Fat Cell''?\
549'''Mast Cell''': I can't believe you'd call me that! Especially when the "B" in "B Cell" stands for "bonehead" [[note]] A {{Woolseyism}} of UsefulNotes/{{Baka}} [[/note]]!\
550'''B-Cell''': What did you just say!?\
551'''Mast Cell''': I called you a bonehead, bonehead!\
552'''B-Cell''': Well, bring it on, then, you fatty!
553* WorfHadTheFlu: Gets overran by cells infected with the mumps virus due to needing to have the antigen presented first (something he explicitly says) [[note]] This is equivalent to not having ammunition to shoot with [[/note]]. When Memory B cell gets better, he gets rid of them easily.
554* YouAreFat: Calls Mast Cell a "Fatty Fat Cell" much to her chagrin.
555[[/folder]]
556
557[[folder:Mast Cell]]
558[[quoteright:220:https://static.tvtropes.org/pmwiki/pub/images/mast_cell_anime.png]]
559
560->'''Voiced by:''' Creator/AyakoKawasumi (Japanese), Creator/MaureenPrice (English)
561
562A Mast Cell. She plays an important role in the allergic response.
563----
564* DestructiveSaviour:
565** She ends up producing too much histamine after being confused by the elevated number of [=IgE=] that B Cell released previously. This does take out most of the Cedar Allergens, at the cost of causing an allergic reaction (that, in the scale of the setting, has apocalyptic results). Justified due this being a ForegoneConclusion, since that is the usual response to allergies, something that U-1146 {{lampshades}}.
566** It seems her actions tend to cause mayhem more often than not, thing that garners her the animosity of Ordinary Cells, who tend to be victims of the histamine she releases.
567* HeroicBSOD: Has a small one in chapter 16 after the complaints she receives from Ordinary Cells makes her to have doubts of her actions. Thankfully, she snaps out of it thanks to Basophil's speech.
568* IAmBigBoned: Takes serious offense to getting called "Fat Cell" by B-Cell.
569* InterserviceRivalry: With B-Cell. Both blame each other for the allergic reactions after doing their respective jobs.
570* IResembleThatRemark: After Mast Cell starts releasing large amounts of Histamine in response to a minor threat, some cells come into her office to complain about her hysterical nature. Mast Cell responds by [[HairTriggerTemper throwing a violent temper tantrum]].
571* NeverMyFault: PlayedForLaughs at the end of chapter 16. Just when she is about to apologize to the Ordinary Cells for the daily troubles she causes during her job, she angrily tells them that she didn't do anything wrong after rethinking the situation. [[StatusQuoIsGod Once again, an argument between her and the Ordinary Cells happens.]]
572* NightmareFace: Pulls a terrifying one when a Ordinary Cell calls her hysterical in chapter 16.
573* NonIndicativeName: Also known as "fat cells," though they have nothing to do with fat.[[note]]The Germans who first discovered this cell called them "Mastzellen," or "fatten''ing'' cells" since they were first thought to be a nutrient transporter, but when brought to Japan, it was translated to Himan Saibou, or "fatten''ed'' cell."[[/note]] Calling her this is a major BerserkButton for her.
574* OfficeLady: Her workplace is apparently an office. It is implied that she lives (or at least sleeps) in there too.
575* RousingSpeech: She gives ''herself'' one when she carries out procedure.
576* StealthPun: Mast Cell is extremely busty, referencing ''mastos'', the Greek word for breast (the name actually comes from the German word for fattening, as it was once believed Mast Cells provided nutrients to other cells).
577* ThrowTheBookAtThem: Starts hitting B-Cell with her manual when he goes too far in his insults.
578* TorchesAndPitchforks: On the receiving end, after it's believed she caused the allergic reactions.
579* VolleyingInsults: With B-Cell. The scene is expanded in the anime:
580-->'''B-Cell''': Overproduction of histamines did the damage but nice try!\
581'''Mast Cell''': I did my job exactly how the manual said to!\
582'''B-Cell''': Well, then you must have read the manual wrong! Don't you know how to do your job without taking direction, ''Fatty Fat Cell''?\
583'''Mast Cell''': I can't believe you'd call me that! Especially when the "B" in "B Cell" stands for "bonehead"!\
584'''B-Cell''': What did you just say!?\
585'''Mast Cell''': I called you a bonehead, bonehead!\
586'''B-Cell''': Well, bring it on, then, you fatty!
587[[/folder]]
588
589[[folder:(Former) Naive T Cell / Effector T Cell]]
590[[quoteright:225:https://static.tvtropes.org/pmwiki/pub/images/naive_t_cell_anime.png]]
591[[caption-width-right:225:Pre-activation.]]
592[[quoteright:225:https://static.tvtropes.org/pmwiki/pub/images/effector_t_cell_anime.png]]
593[[caption-width-right:225:Post-activation.]]
594
595->'''Voiced by:''' Creator/MutsumiTamura (as Naive T Cell), Creator/KenjiNomura (as Effector T Cell) (Japanese), Creator/LauraStahl (as Naive T Cell), Creator/ChrisTergliafera (as Effector T Cell) (English)
596
597A Naive T Cell, later an Effector T Cell. Referred to as '''Naive'''.
598----
599* AnimeHair: As Naive T Cell, he has a blond forelock of hair that's just barely visible under his hat, but as Effector T Cell it grows significantly and sticks straight up.
600* BigOlEyebrows: As Effector T Cell, his eyebrows are a lot bigger.
601* BroughtDownToNormal: PlayedForLaughs at the end of the third episode of the anime, where he reverts to Naive T Cell after being defeated by the Ordinary Cell infected of influenza A in one punch. Doesn't seems to stick for much, however, as he is portrayed as Effector T Cell in his following appearances.
602* CallBack: During the chapter featuring the Rhinovirus, this guy clearly shows up as Effector T Cell and stands out from the other Killer T Cells. He makes more appearances in the Thymocyte and Second Cancer stage arc, too.
603* TheCavalry: He returns to the battlefield after being activated, to turn the tide of the battle against the Influenza.
604* {{Expy}}: Effector T Cell is a pretty obvious one to the various protagonists of ''Manga/JoJosBizarreAdventure'', from his overall design, his over the top manliness, use of {{Megaton Punch}}es, and chanting "ORA ORA ORA" when attacking.
605* MesACrowd: After becoming activated, he undergoes cell division.
606* MusclesAreMeaningful: Sported very big Jojo-like muscles after activating to an Effector-T Cell. And it is the real deal, as his presence is the key of fighting the Influenza Virus (though B-Cell did half of the work too).
607* NeverBringAKnifeToAFistFight: Used a tiny little knife as his weapons before taking his level in badass. After that, all he needs are his [[HeroicBuild guns]].
608* NotSoAboveItAll: Gladly plays badminton with the Ordinary Cell who lives right next to the T Cell base in the Pharynx.
609* OneManArmy: Becomes this after being motivated by Dendritic Cell and gaining confidence in himself. Additionally, the fact that he duplicated himself after turning into Effector T-cell would technically make him this two-fold, with him ending up being an army of armies, even if only temporarily.
610* SleevesAreForWimps: After evolving into Effector T Cell, his already-short sleeves are torn off at the shoulders.
611* TookALevelInBadass: A very spectacular example. Thanks to the motivation Dendritic Cell gives to him, he goes from a wimpy weakling to a mountain of muscles straight out of ''Manga/JoJosBizarreAdventure'' or ''Manga/FistOfTheNorthStar'' who destroys his enemies by punching them!
612* WellTrainedButInexperienced: Even after implicitly surviving harsh training in the thymus, Naive T Cell screams in terror and runs when an influenza virus comes. After a pep talk by Dendritic Cell, he becomes Effector T Cell and returns to take out the virus.
613* TheWorfEffect: While he easily wipes out the Influenza B virus, a single Influenza A [[MegatonPunch sends him flying with a slap]], causing him to revert to Naive and showing off how much more powerful the evolved virus is.
614[[/folder]]
615
616[[folder:Dendritic Cell]]
617[[quoteright:195:https://static.tvtropes.org/pmwiki/pub/images/dendritic_cell_anime.png]]
618
619->'''Voiced by:''' Creator/NobuhikoOkamoto (Japanese), Creator/GriffinBurns (English)
620
621A Dendritic Cell, whose job is to notify other immune system cells of bacterial invasions and viral infections, as well as to provide {{Power Up}}s to T Cells.
622----
623* AgentPeacock: [[spoiler:Sports a disco-like police outfit when he is activated by the Lactic Acid Bacterium.]]
624* AlcoholHic: In the Cytokines chapter, [[spoiler:the polysaccharides made for Dendritic Cell by the Lactic Acid Bacteria is depicted as alcohol, and when activated, he wobbles and hiccups.]]
625* AstonishinglyAppropriateAppearance: He wears a green uniform, works out of a tree, and has a small plant sticking out of the side of his hat. Dendritic cells get their name from the branch-like dendrites (not the same as the ones produced by neurons) they generate.
626* {{Blackmail}}: This is one of the ways he gives a PowerUp to other immune cells--by showing {{Embarrassing Old Photo}}s of them that would make the cells shiver even when the act was done many millimetres away. This is used to represent the action of cytokines.
627* CommunicationsOfficer: Transfers information from Macrophages to Helper T Cell, as seen in Episode 3.
628* CoolShades: Sports a pair when he's activated by the polysaccharides of one of the lactic acid bacteria. Along with a BDSM whip, for some reason...
629* EmbarrassingOldPhoto: Dendritic Cell weaponizes these as part of his role in the immune system (as well as for [[TheGadfly his own amusement]]). Cytokines are represented as very embarrassing photos that activate the Immune Cell who sees them into destroying stronger enemies. He has thousands of said pictures in his collection.
630* TheGadfly: Absolutely loves messing with the other immune cells by revealing photos of their often embarrassing youth.
631* KnowledgeBroker: Has information on most other cells. Some of that information is probably best left unread.
632* LongLived: The Dendritic Cell is depicted as looking the same age he does in the present in the flashback to Helper and Killer T's childhood. And he clearly knows more than the other immune cells would want him to know.
633* NiceGuy: In general, he's very friendly, polite, and kind to his comrades. In particular, he delivers a heartwarming speech to a sobbing Naive T-Cell, allowing him to activate into an Effector T-Cell.
634* PowerUp: One of his primary functions is providing these to the various immune cells. Sometimes he can do it as encouragement, other times it's downright {{blackmail}}!
635* PsychoticSmirk: Sports a very creepy one, while asking a favour to one of the lactic acid bacteria. [[spoiler: The favour is for the bacterium to produce polysaccharides to activate him and help the other cells against the new influenza.]]
636* RousingSpeech: He's capable of encouraging Naive T Cells using these, awakening their killer instinct.
637* SayItWithHearts: His dialogue ends with hearts when he's activating (blackmailing) the immune cells with embarrassing photos of them.
638* StrongerThanTheyLook:
639** While he looks rather average, when he's activated, is strong enough to defeat an influenza-infected cell in one kick.
640** Even when not activated, he's nimble enough to dodge Killer T Cell and Helper T Cell coming after him. All the while wearing a dirty grin on his face.
641* {{Troll}}: To almost sadistic degrees. He adores messing with other cells by showing embarrassing photos of their youth, and enjoys the mayhem his actions cause way too much.
642[[/folder]]
643
644[[folder:Langerhans Cell]]
645[[quoteright:309:https://static.tvtropes.org/pmwiki/pub/images/langerhans_cell_207955.jpg]]
646->'''Voiced by:''' Motomu Kiyokawa (Japanese)
647
648A sub-species of Dendritic cell.
649----
650* BrainwashedAndCrazy: Undergoes this after picking up a mask left behind by a mosquito bite which attaches itself to his head.
651* CoolOldGuy: He's kind to [=AE3803=] in his introduction, and he attempted to prevent her from being sucked by the mosquito proboscis. He was out of reach, but it retracted before she could be taken.
652* EvilOldFolks: Played with. They are all depicted as old men with fancy clothes and facial hair, and they serve as the antagonists in chapter 16, but the evil part is only due to brainwashing.
653* NamedAfterSomebodyFamous: Langerhans cells were named after the scientist who identified them, Paul Langerhans. The caption/narration explaining this cell notes that it should not be confused with the islets of Langerhans, also named after the scientist but are pancreatic regions that have nothing to do with dendritic cells.
654* PokemonSpeak: Langerhans Cell speaks normally, but he and the other infected cells can only say "deng" after being taken over by the dengue fever masks.
655* WeHardlyKnewYe: The first Langerhans Cell we're acquainted with is killed in the same chapter he's introduced, due to being infected by the Dengue virus. However, they weren't all killed, since one Langerhans Cell who evaded the virus is shown at the end of the chapter.
656[[/folder]]
657
658[[folder:White Blood Cell / Neutrophil Squad (U-2048, U-2626, U-4989, U-2001)]]
659[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/leukocytes_anime.png]]
660
661->'''Voiced by:''' Kensuke Satou (U-2048), Junichi Yanagita (U-2626), Creator/KentaroKumagai (U-4989), Akinori Egoshi (U-2001) (Japanese), Christian La Monte (U-2048), Creator/LucienDodge (U-2626), Creator/SeanChiplock (U-4989), Zachary T. Rice (U-2001) (English)
662
663A quartet of recurring Neutrophils. They are identified by their hair styles, U-2048 having straight hair, with both eyes unobstructed; U-2626 having hair covering his eyes; U-4989 having uncombed hair, with both eyes unobstructed; and U-2001 having a buzz cut.
664----
665* AdorablyPrecociousChild: As myelocytes, they took to training very well, mobbing a large cloth training puppet with the rest of his squad.
666* {{Bromance}}: U-4989 with U-1146. Close friend to aforementioned character, and is distraught when harm comes to U-1146.
667--> '''U-4989''': Dummy! You big dummy!! I told you a million times not to mess around like that!! Seriously! I'm not gonna care anymore!! I'm not!!
668--> '''U-2626''': Calm down, No. 4989!
669* TheCavalry: To Ordinary Cell, when he was captured by opportunistic and harmful bacteria in the intestines.
670* ChildhoodFriends: With U-1146 and Eosinophil. They were classmates in Cell School and were raised in the same Bone Marrow, and with the former, they patrol the same region as adult cells. There is also a picture of the four of them that was taken in a picture booth, complete with "[=BFFs=]" and sparkling eyes filters.
671* HarmlessElectrocution: Are electrocuted by Staph A's fibrin when she uses coagulase to incapacitate them. While severely wounded and dazed, they’re still alive by the end of the ordeal.
672* HelpImStuck: Whilst transmigrating, they get stuck between a couple buildings, and need the other neutrophils to pull them out.
673* ImprovisedWeapon: U-4989 is shown to use these OnceAnEpisode. Some examples include a box of steamed buns, his knife tied to a pipe as a makeshift spear, and wearing acid-proof enamel cookware as armour. He also used branches as a (playing) weapon as a myelocyte.
674* FunnyBackgroundEvent: U-4989 has been seen doing some rather ridiculous things, such as washing up by jumping into the canal than using the faucets and buckets provided, only the top of his head, his cap, and ID tag visible. (In the anime, he is swimming in the canal.)
675* LastStand: In the Influenza arc, they get cornered into an alley by the swarm of Influenza infected cells. Fortunately, Effector T Cell comes to the rescue.
676* LeeroyJenkins: Played with. U-4989 nearly got sucked out of the body in Chapter 4/episode 2 because he didn't turn his L-Selectin on. He's shown to have survived later.
677* TheMedic: U-2626 can be seen all-throughout in Chapter 27 attempting to stem the severity of U-1146 and Eosinophil's wounds.
678* OnlySaneMan: U-2626 in Chapter 27: with U-4989 overreacting and U-1146 on his deathbed, it's down to him to play the straight man.
679* TheReasonYouSuck: Along with U-1146, they taunt the campylobacter on their faults, before assaulting them.
680* ShrugTake: U-2626 when he sees U-1146 and Eosinophil revived from their injuries via embarrassment.
681* TheSquad: Form a squad or patrol the same sector with U-1146.
682* TearsOfJoy: U-4989 is extremely moved to the point of tears when Red Blood Cell refers to White Blood Cells as being "super reliable".
683[[/folder]]
684
685[[folder:White Blood Cell / Neutrophil (U-1110)]]
686[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_29_at_74001_am.png]]
687
688->'''Voiced by:''' Creator/SatoshiHino (Japanese), Creator/XanderMobus (English)
689
690An instructor Neutrophil. Is bald and almost always seen with a Pseudomonas puppet on his right arm.
691----
692* BadassTeacher: The one tasked of teaching the erythroblasts about the danger of the bacteria, and also capable of one-shotting a pseudomonas easily.
693* TheCavalry: Arrives just in the nick of time to save U-1146 and [=AE3803=] from the Pseudomonas.
694* MasterActor: Convinces (and terrifies) an entire class of Erythroblasts that he's a bacteria, hell-bent on eating them. Also scares Eosinophilic Myelocyte.
695* MrExposition: Regarding the percentage of Basophils in the White Blood Cell population. (0.5%)
696* RepeatedCueTardyResponse: Misses Macrophage's cue and has to ask if he should start his performance.
697* VeteranInstructor: Is no slouch when it comes to killing bacteria, and works in an instructional position at cell school.
698[[/folder]]
699
700[[folder:Thymic Epithelial Cell]]
701->'''Voiced by:''' Creator/RikiyaKoyama (Japanese)
702
703----
704* BigOlEyebrows: The first instructor shown has thick rectangular brows.
705* DrillSergeantNasty: They're portrayed as very harsh drill instructors to the recruits.
706-->''Welcome to hell, you useless runts! Listen up! The thymus is where we find out which of you we can use, and which ones we can't! We don't need blockheads that can't do their part when the time comes!''
707* MrExposition: Largely responsible for explaining the development of thymocytes in the Thymocytes chapter/episode.
708* SweetTooth: During the first round of drills, when the thymocytes are still kids, the main instructor is munching on a cookie while lecturing the recruits.
709[[/folder]]
710
711[[folder:M-Cell]]
712[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/m_cell_207224.jpg]]
713->'''Voiced by:''' Creator/ShoHayami (Japanese)
714
715A microfold cell, referred to as '''M Cell'''. He lures bacteria into Peyer Patches.
716----
717* TheBartender: He runs a Peyer's Patch which seems like a bar for the body's cells but easily turns into a deathtrap for bacteria. He also dresses like a bartender in an upscale establishment.
718* DevilInDisguise: To any bacteria that stumble into his Peyer's Patch.
719--> '''M Cell''': Please. Enjoy your meal. It is... your last supper, after all... eat to your hearts' content... Heh heh...
720* EyesAlwaysShut: His eyes are always closed, giving him a serene appearance.
721* InescapableAmbush: Literally his main function. Managed to lure four bacteria into a room containing no less than: 18 B-Cells, seven Killer T Cells, five Neutrophils, five Dendritic Cells and one Macrophage.
722* MyCard: While he introduces himself, he presents a fancy-looking business card with his name and function.
723[[/folder]]
724
725!Circulatory System
726[[folder:Platelets]]
727[[quoteright:280:https://static.tvtropes.org/pmwiki/pub/images/platelet_anime.png]]
728
729->'''Leader-chan voiced by:''' Creator/MariaNaganawa (Japanese), Creator/XantheHuynh (English)\
730'''Backwards Cap-kun voiced by:''' Creator/ManakaIwami (Japanese), Creator/JackieLastra (English)
731
732Platelet cells, who act as a construction and repair crew whenever the body is injured. Typically refers to the platelet with long brown hair seen in the photo, "Leader-chan."
733----
734* AdorablyPrecociousChild: Despite looking much younger than other cells, they're still hard workers who are devoted to their jobs, even if being small can get in the way of their work sometimes.
735* BadassAdorable: They're ridiculously strong for their size and have no problem putting themselves in danger to get their job done. They're also downright adorable and elicit CutenessProximity reactions in everyone.
736* BadassPacifist: Even though they don't engage in combat themselves, they still march to the front lines of danger to complete their job of sealing up wounds, which can completely turn the tides of a battle and secure victory for the immune cells.
737* BigBrotherWorship: They all look up to and respect the older big brother and sister cells like Red Blood Cell and White Blood Cell.
738* BreakoutCharacter: Despite starting as supporting characters, their popularity kept leading to them being granted more focus. These days Leader-chan is basically the SeriesMascot and heavily used in promoting the series. She and the rest of the Platelet team would eventually receive their own spinoff series, ''Manga/CellsAtWorkPlatelets''
739* CatchPhrase: "Anone anone"[[note]]"You see, you see,..."[[/note]], "Thank you for your hard work!", and "Heave-ho!"
740* ChainOfPeople: Does this to an extreme when they rescue one of their fellow platelets. They're so in sync about this that they form the bridge ''as they're falling''. Truly a testament to the amount of team synergy that these little cells have.
741* CheerfulChild: The whole lot of them are just so positive and cute, they invoke CutenessProximity in any cells that interact with them (even the normally hard-as-nails killer T Cells!)
742* ChildrenAreInnocent: They are kind and polite to everyone, with all the other cells being hit with CutenessProximity at the sight of them and happy to play with them.
743* CurtainsMatchTheWindows: Leader-chan has brown eyes to match her brown hair.
744* CutenessProximity: Their very presence induces this reaction in everyone, in-universe and out.
745* TheCutie: Their arrival always lightens up the mood and leads way to a whole heaps of cutesy and adorable moments.
746* ADayInTheLimelight: The Platelets, especially Backwards-Cap-Kun, are the focus of chapter 26.
747* FunPersonified: Aside from their role of sealing up wounds and construction, the Platelets are the primary source of the cute and fluffy moments in the show.
748* ImprobableInfantSurvival: No Platelets are seen getting hurt or dying during the [[spoiler:hemorrhagic shock in Episode 11-12]].
749* LeaningOnTheFourthWall: The scrape chapter and episode end with her describing a scab.
750* {{Leitmotif}}: [[https://www.youtube.com/watch?v=2E6dmxh76Q0 "March of the Platelets,"]] a cute and upbeat marching theme punctuated by whistles and xylophone.
751* MsFixit: One part of their job is to repair structural damages by creating thrombus.
752* MusclesAreMeaningless: Despite having the bodies of children, they are strong enough to drag around several other cells to turn them into scabs.
753* NervesOfSteel: No matter what situation occurs that would require their assistance, nothing is capable of discouraging them from doing their jobs, with dangerous bacteria barely getting a reaction from them (since they know the Neutrophils will keep them safe) and the situation involving [[spoiler:the hemorrhagic shock injury]] only resulting in them being even more determined than usual to get the job done.
754* NiceGuy: Not just the Platelet Leader, but all the Platelets are unfailingly kind and polite towards each other and all other body cells. Even {{enforced}} to a degree in chapter 4/episode 2. While giving instructions to the Platelets during a blood clot, the Leader clearly states "No fighting with other kids!"
755* NotSoAboveItAll: Downplayed. The Platelets are often seen as being unflinchingly kind and polite, but when gold medals are involved, their effectiveness increases tenfold in hopes of earning it but at the cost of their characteristic politeness; One of them even steps on U-1146 in their gold medal bliss.
756* OnlyKnownByTheirNickname: Instead of alphanumerical designations, Platelets are identified individually by some unique feature or position, such as the female "Leader-chan" and "Backwards-Cap-Chan."
757* SeriesMascot: The Platelets, especially Leader-chan, are featured heavily in promotional material and the opening/ending credits despite being supporting characters at best.
758* SpotlightStealingSquad: Leader-chan is the one who gets nearly all the focus and all the dialogue. Backwards-Cap-Kun is the next most focused Platelet and often accompanying Leader-chan.
759* StickySituation: Much to the consternation of the red blood cells, the Platelets happily ensnare them in fibrin nets and gather them into one massive and uncomfortable blood clot.
760* TokenMiniMoe: They are the only kind of working cells depicted as little boys and girls. Justified, as real-life platelets are smaller than other cells.
761* WiseBeyondTheirYears: Despite being small children, they do their jobs with all the efficiency and maturity of adult cells. [[spoiler:Even in the face of a devastating hemorrhagic shock injury, they don't hesitate to get straight to work repairing the wound.]]
762** This is justified, as Platelets have rather short lifespans when compared to other cells. So having the maturity of an adult is a necessary factor for them to perform their jobs efficiently.
763[[/folder]]
764
765[[folder:Senpai Red Blood Cell ([=AA5100=])]]
766[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_07_17_at_12649_pm.png]]
767[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_29_at_81818_am.png]]
768 [[caption-width-right:300:As an Erythroblast.]]
769
770->'''Voiced by:''' Creator/AyaEndo (Japanese), Creator/KiraBuckland (English)
771
772Another Red Blood Cell, often called '''Senpai''' or '''[=AA5100=]'''.
773----
774* AffectionateGestureToTheHead: Pinches [=AE3803=]'s cheeks playfully when she finally manages to circulate the body without getting lost. Comments that she does so cause her cheeks are soft.
775* AirplaneArms: Runs like this (quite happily) to the neck and armpit areas when the body receives an intravenous rejuvenation.
776* AscendedExtra: Still a supporting character, but shows up more frequently in the anime than the manga.
777* BystanderSyndrome: She is shown to be annoyed by Red Blood Cell's aversion of this trope and her constantly getting involved with White Blood Cell's shenanigans.
778* CatchPhrase: "Sure is peaceful, isn't it Senpai?" ''"Sure is."'' Usually right before [[TemptingFate something really bad happens.]]
779* CoolBigSis: Viewed as this by Red Blood Cell, as she constantly looks out for her and helps her with deliveries when needed.
780* CrossPoppingVeins: Has a couple when she scolds [=AE3803=].
781* FantasticRacism: Present at the beginning of the series, when she comments that White Blood Cells are creepy, despite having been saved by one just moments before. Subverted towards the end of the series as she becomes more accustomed to them.
782* LetsGetOutOfHere: Says this word for word when she encounters the influenza-infected cells.
783* {{Meido}}: As with her fellow Red Blood Cells, it is implied that she wore a Meido uniform as a child, up until she graduated from cell school.
784* MeaningfulName: Her name [=AA5100=] is a hexadecimal color for a shade of brown.
785* TheScream: Does this when she [[https://imgur.com/a/HLsNuWJ encounters cancer cells consuming nutrients.]]
786* SparklingStreamOfTears: Has this when reuniting with [=AE3803=] after the hemorrhagic shock incident.
787* ThousandYardStare: Sports this after being on the bottom of the dogpile consisting of [=AE3803=], Neutrophil and Memory B Cell.
788* WeAreNotGoingThroughThatAgain: Threatens to stop delivering with [=AE3803=] if she keeps insisting on sticking her neck into other people's business. This scolding becomes a catalyst for [=AE3803=] to become more self-sufficient.
789--> '''Senpai RBC''': You! Still a newbie and you go sticking your neck in other people's business![[note]]Referring to [=AE3803=]'s calling other Immune Cells for help during the first Cancer Cell arc[[/note]] You do that next time and I'll never deliver with you again!\
790'''Red Blood Cell''': I'm sorry... I just wanted to do something to help... ''I thought I did a good job...''
791[[/folder]]
792
793[[folder:Kouhai Red Blood Cell ([=NT4201=])]]
794[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_22_at_121109_pm.png]]
795
796->'''Voiced by:''' Creator/YuiIshikawa (Japanese), Creator/JeannieTirado (English)
797
798Another Red Blood Cell. Often called '''Kouhai'''.
799----
800* BadassBoast: Claims that she's one of the most talented Red Blood Cells, and states that she's sure of it.
801* BeingPersonalIsntProfessional: She's very direct, deadpan and prefers to get things done. Brushes off Red Blood Cell's attempt to socialize and teach her.
802* BreakTheHaughty: Kouhai RBC is humbled after seeing Red Blood Cell continue to strive on to deliver packages, despite all seemingly being lost, going so far as to state that it taught her a lot about the dedication required to do the job well.
803* FantasticRacism: Like many others of her kind, she exhibits bigotry towards White Blood Cells, especially neutrophils, seeing them as little more than violent thugs who go overboard in their duties. As such, she is genuinely bewildered that Red Blood Cell is acquainted with and on good terms with so many of them.
804* InsufferableGenius: Kouhai RBC is ''very'' good at her job, to the point where she needs minimal guidance. However, she is cold towards her superior and condescends Red Blood Cell when she feels their situation is futile.
805* NotSoStoic: Despite being a major case of TheStoic, the hemorragic shock pretty much shatters her composure.
806* RedOniBlueOni: She is the blue to her more excitable and absent-minded sempai.
807* TheStoic: In contrast to [=AE3803=], she is extremely serious and professional, prioritizing the job above all else and not getting caught up in [=AE3803=]'s antics or fooling around.
808[[/folder]]
809
810[[folder:Transfused Red Blood Cell ([=DB5963=])]]
811[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_29_at_113601_am.png]]
812
813->'''Voiced by:''' Creator/TakayukiKondo
814
815The leader of a group of transfused erythrocytes.
816----
817* BigDamnHeroes: Appears right in the nick of time along with his fellow transfused blood cells, saving everyone and bringing the body back into working order.
818* BigOlEyebrows: Sports a pair of these. Easily a defining unique characteristic.
819* HumanPopsicle: The transfused Red Blood Cells turn out to be this, referencing blood centrifugation. One recalls that they were sucked up, frozen in their new home, then woke up in the current body with no recollection of where they were.
820* IconicOutfit: Unlike the cells in his new host body, this Red Blood Cell has a folded-down collar on his jacket, as well as velcro rather than laces on his shoes.
821* MrExposition: Shares his experience to Red Blood Cell and Neutrophil about being drawn from his host body, stored, and transfused into the current body.
822* RousingSpeech: Gives his fellow transfused blood cells one after they realize that the body they're in is dying from severe blood loss, motivating them to help distribute oxygen/nutrients and bring the body back to full function.
823--> '''Transfused Blood Cell''': "Long story short, that's how it is. They say no journey is too hard without good company... Well we gotta band together when times are tough! Well here we are now! We're Red Blood Cells-might as well go with the flow. We might be from different bodies, but our jobs are the same. Let's all work together... and carry this here oxygen! Yeah!"
824--> '''Assembled Blood Cells''': "RAAAAAAAH!"
825* TrappedInAnotherWorld: As a transfused cell, this is basically his experience. A mysterious force pulled him out of his homeworld, weird stuff happened, and then he woke up in a different world entirely. He even arrived just in time to help the locals save their world.
826* TwinkleSmile: After explaining how he and his fellow blood cells made it into the body, he gives a smile that makes the background sparkle.
827[[/folder]]
828
829[[folder:Megakaryocyte]]
830[[quoteright:309:https://static.tvtropes.org/pmwiki/pub/images/megakaryocyte_206790.jpg]]
831->'''Voiced by:''' Creator/YukoKaida (Japanese), Creator/AmberLeeConnors (English)
832
833The progenitor of the Platelets, their mentor, and caretaker. Though her methods may seem very harsh, she loves her "students" very much and won't hesitate to lavish them with praise and rewards when they get their jobs done, and done well.
834----
835* BadassAndBaby: She's always carrying a baby platelet strapped to her in a sling wherever she goes.
836* DrillSergeantNasty: She's a very tough mentor to her platelets. In her first appearance, she's unsatisfied with their performance, calling it "careless" as she berates them.
837* JerkWithAHeartOfGold: Megakaryocyte loudly belittles her platelets and enjoys coming up with insults for them. She also promises the best platelet a gold medal (called a bribe by the Neutrophils) to get them to complete a difficult task: mending an internal hemorrhage. However, she's very proud of them when the platelets finish the task with no losses and minimal damage to the body, and she decides that they all deserve medals for their work.
838* ScaryTeeth: Her teeth are all drawn as sharp. In the anime they're drawn as normal most of the time.
839* SoProudOfYou: She is moved to tears when the platelets work together to mend a hemorrhage, and she says that she's glad that Backward-Cap Platelet finally matured and was able to be helpful.
840* StatuesqueStunner: She's a very large and imposing cell. This somewhat reflects the fact that megakaryocytes are partially named for their size.
841* TearsOfJoy: Seeing her platelets working together moves her greatly.
842* ToughLove: She's the progenitor and caretaker of the platelets and is very harsh on them, ready to berate them whenever she can, but she also recognizes a job well done.
843[[/folder]]
844
845!Other Body Systems
846
847[[folder:Ordinary Cell]]
848[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2019_01_08_at_82255_am.png]]
849
850->'''Voiced by:''' Creator/YuusukeKobayashi (Japanese), Creator/BrycePapenbrook (English)
851
852A typical body cell, depicted in the latter half of the manga. He lives right next to a T Cell base in the Pharynx. Called '''Cell Boy''' by U-1146.
853----
854* ADayInTheLimelight: Is the focus character of Chapter 11.
855* AscendedExtra: After his [[ADayInTheLimelight previous stint in Chapter 11]], he becomes this in Volume 5 (Chapters 20-25), particularly in the Lactic Acid Bacteria arc, and effectively takes Red Blood Cell's place as TheWatson and SupportingProtagonist.
856* CharacterDevelopment: Ironically receives this the most of all cells featured, despite his function being monotonous and never changing. He learns more about the realities of how the body and the various cells in it work, and learns to accept and appreciate both his own role and that of the other cells.
857* TheGenericGuy: All Ordinary Cells' character designs are meant to look as generic as possible. As if to drive the point home, their entire wardrobe consists of a white T-shirt simply saying "Cell" on it, jeans, and very generic sneakers.
858* IJustWantToBeSpecial: Ordinary Cell feels like the lives of the Ordinary Cells are boring, compared to the works of the immune cells. In his words, he just wants to help someone and be thanked sincerely.
859* LimitedWardrobe: The only thing they wear is a white T-short with the word "Cell" on it. {{Justified}} as these T-shirts represents the [[https://en.wikipedia.org/wiki/Major_histocompatibility_complex major histocompatibility complex]], the mark for T-cells to identify whether the cell comes from the host.
860* SupportingProtagonist: Serves as this to White Blood Cell in Volume 5 (Chapters 20-25), taking Red Blood Cell's place in this capacity.
861[[/folder]]
862
863[[folder:Secretion Gland Captain]]
864[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_28_at_30139_am.png]]
865[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_09_15_at_110444_am.png]]
866 [[caption-width-right:350:In Rain Dance outfit]]
867
868->'''Voiced by:''' Akinori Egoshi (Japanese), Creator/DCDouglas (English)
869
870The leader of the Secretion Gland, usually shows up in episodes where secretion is involved (Influenza, Cedar Pollen, Heat Stress). Referred to by his subordinates as, '''Captain'''.
871----
872* CrazyEnoughToWork: The idea of doing a rain dance is crazy and absurd in its own right, but when an intravenous rejuvenation happens shortly afterwards, even the narrator wonders if it was due to the Secretion Gland Captain's rain dance itself.
873* DespairEventHorizon: He has his own when he realizes that there's nothing more the system can do to relieve the body of heat stress.
874* HeroicBSOD: When he realizes his system can't do anything, he ends up donning a ceremonial outfit and begging the gods for rain.
875* ManlyTears: When the body recovers from heat stress, he sheds several tears of joy.
876* RainDance: He attempts one when the body is on the verge of death due to heat stress. His behavior breaks his subordinates out but [[spoiler:ends up working when the body receives an Intravenous Rehydration.]]
877* TheScream: The captain yells in panic when [[spoiler:the Steroid]] shows up at his door.
878[[/folder]]
879
880[[folder:Hematopoetic Stem Cell]]
881[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_11_at_42521_pm.png]]
882
883The cells in charge of caring for other blood cells.
884----
885* AdaptationalNiceGuy: In the anime, they appear less cynical and their comment that [=AE3803=] would grow up to be a dummy is left out.
886* BerserkButton: These cells get easily upset over the complicated naming of their fellow cells during their gestation. After all, they're the ones that have to process them.
887* BitchInSheepsClothing: Looks gentle and caring on the outside, but in reality, these cells are very jaded.
888-->'''Hematopoetic Stem Cell''': ''(in the manga, about [=AE3803=])'' She doesn't look like she can do any other work. I bet she'll grow up to be a dummy.
889* PeopleFarms: They work in a literal BabyFactory, supervising the production of infant Precursor Cells and assigning them to become different types of cell according to the needs of the body.
890[[/folder]]
891
892[[folder:Intestinal Epithelial Cell]]
893[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/intestinal_epithelial_cell_207223.jpg]]
894Cells found in the gastrointestinal tract. They are responsible for absorbing nutrients and water and are depicted as scuba divers in the story.
895----
896* BlushSticker: When given an award for bravery.
897* HostageSituation: One cell was used as a hostage to force the Neutrophils to comply to their demands.
898* SchmuckBait: The Intestinal Epithelial Cell tells the Campylobacter holding him hostage that there is a weak spot in the intestinal mucus. [[spoiler: It actually leads to a Peyer's patch, where the bacteria are dispatched by dozens of white blood cells.]]
899* YouDontLookLikeYou: When we see him in the colon in Chapter 23, he has a facemask-style scuba helmet instead of separate goggles and air mask.
900[[/folder]]
901
902[[folder:Goblet Cell]]
903A mucous cell who lives in the digestive tract.
904----
905* OneShotCharacter: Seen once near the middle of chapter 23 and never again.
906* PoweredArmor: Wears an Atmospheric Diving Suit instead of Scuba gear like his coworker, Intestinal Esophilial Cell.
907[[/folder]]
908
909[[folder:Lactic Acid Bacteria]]
910[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/image_2022_06_22_001756442.png]]
911->'''Voiced by:''' Creator/RieTakahashi, Yuuri Yoshida, Creator/YurikaKubo, and Creator/NatsumiFujiwara (Japanese), Creator/MichelleMarie, Creator/KayliMills, Creator/AbbyTrott, and Creator/XantheHuynh (English)
912
913A blanket term for bacteria that produce lactic acid, which are classified as good bacteria. In this story they help in cleaning and maintaining gut and digestive organs along with fending off harmful bacteria.
914----
915* BadassAdorable: They're absolutely adorable little critters, but just one of these little guys can knock down a H. Pylori by itself when activated.
916* BigEater: One lactic acid bacterium alone can eat large amounts of purine.
917* CuteGiant: A fully activated Lactic Acid Bacterium is utterly massive, around the size of Ordinary Cell's house, but it's still an utterly adorable critter that never loses its friendly and helpful personality.
918* FriendlyEnemy: The Neutrophils and other immune cells consider them allies and will not attack them even if they are classified as germs.
919* HelpfulMook: Despite being germs, they don't do anything to harm the body, instead actually helping the cells in various ways, such as fighting off harmful gastric bacteria, aiding in the clearing away of rubble caused by bacterial attacks, and breaking down excess purine that gathers in the intestines by eating it.
920* PokemonSpeak: Can only say ''nyuu'', which comes from the Japanese term for lactic acid bacteria, ''Nyuusankin''. They can even be heard saying it while singing along to the Season 2 anime opening.
921* RapidFireFisticuffs: How one Lactic Acid Bacterium was able to defeat an H. Pylori.
922* RidiculouslyCuteCritter: They're incredibly tiny, able to have four of them fit snugly in the arms of one cell, and look like cute multicolored jellybeans with huge eyes and penguinlike flippers. Even when activated, unlike other germs that turn more monstrous, they simply grow a pair of small horns, with full activation only [[CuteGiant bloating them up to the size of houses]]. Regular Cell brings several home due to CutenessProximity and they play with yarn.
923* TokenGoodTeammate: Unlike most bacteria, they're helpful and essential to the body.
924[[/folder]]
925
926!Harmful / Invasive Cellular Organisms
927
928[[folder:''Pneumococcu''s]]
929[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/s_pneumoniae_anime.png]]
930
931->'''Voiced by:''' Creator/HiroyukiYoshino (Japanese), Creator/BenDiskin (English)
932
933The series' first villain, a bacterium that causes pneumonia.
934----
935* ArmorOfInvincibility: His capsule serves as one, making it impossible for White Blood Cell to attack him directly.
936* TheBusCameBack: One pnemococcus serves as a StarterVillain and gave Red Blood Cell a lot of trouble. Two more show up in Episode 8 but are quickly dispatched by White Blood Cell without Red even realizing their presence and they never get treated seriously this time round.
937* ColourCodedCharacters: He is primarily purple. He's a gram positive bacterium.
938* CombatTentacles: Has many of them emerging from his head, back and hips.
939* HiddenInPlainSight: The crafty germ hides himself in Red Blood Cell's package and simply lets her deliver him to his destination.
940* InescapableNet: Uses his capsule as both this and a SmokeBomb to throw White Blood Cell off his trail.
941* PuzzleBoss: His capsule makes him immune to Neutrophil attacks. He would have been a HopelessBossFight, but luckily for everyone but him, he winds up in the respiratory tract...
942* SelfDuplication: U-1146 mentions that if left undisturbed to feed on nutrients, pnemococcus will start splitting into more of himself, eventually taking over and destroying the host.
943* SoleSurvivor: A horde of them appear at the beginning and are all quickly killed by the Neutrophils, but one survives and become the main antagonist of the episode.
944* StarterVillain: The first menace presented in the series.
945* VillainOfTheWeek: One of them is the main villain of the first episode of the series and the first chapter of the manga. He is apparently the brother of another pneumococcus who attacks the body during the scratch incident, but this one acts as a minor antagonist.
946[[/folder]]
947
948[[folder:''Staphylococcus aureus'']]
949[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/s_aureus_anime.png]]
950
951->'''Voiced by:''' Creator/MaiNakahara (Japanese), Creator/CristinaVee (English)
952
953A proud and haughty bacterium that causes staph infections.
954----
955* BewareMyStingerTail: Her main weapon is a tail with a blade at the end of it.
956* TheBusCameBack: [[spoiler:A new group of them return to invade the body in Chapter 15.]]
957* ColourCodedCharacters: She is primarily yellow, making honor to her second MeaningfulName.
958* CuteMonsterGirl: She has a graceful design and relies more on numbers and strategy than brute force, which gives her an air of sophistication, unlike the pneumococcus of the first episode.
959* DidntSeeThatComing: The reason why she fails both times in invading the body:
960** During the scratch incident, while her plan to deal with the white blood cells was good, she didn't predict the appearence of the Platelets. Once the scratch is successfully sealed and her fellow bacteria are killed, she doesn't last long against U-1146.
961** Once again, in chapter 15 [[spoiler: she defeats the neutrophils in her fused form and thought she has already won, while forgetting about the monocytes/macrophages (to which her sister of the scratch episode took in account), who emerge from the blood stream in that moment. Once they appear, she is abandoned by her sisters and is quickly butchered by them.]]
962* DirtyCoward: [[spoiler: The remaining survivors of the group of ''Staphylococcus aureus'' of chapter 15 quickly abandon their leader once the [[TheDreaded macrophages]] appear.]]
963* FlatWhat: Her reaction when she finds out that the Neutrophils' "powerful reinforcements" are actually [[spoiler: the adorable little Platelets!]]
964* FusionDance: [[spoiler: A group of them fuse together to evolve into a bigger and more powerful version of themselves. See KingMook below.]]
965* GodSaveUsFromTheQueen: Has an appearance with clear royal inspirations to her design, and is the leader of the bacteria swarm that seek to invade the scrape wound.
966* InescapableNet: [[spoiler: Her main weapon in her fused state is a net made of fibrin called coagulase, used to trap and defend herself from neutrophils. It also can [[ShockAndAwe electrocute her victims.]]]]
967* KingMook: Acts as this to the other germs and bacteria that invade in Episode 2/Chapter 4. [[spoiler: In chapter 15, a group of them fuse together to form one of themselves. The fused version is much bigger and is able to produce and use coagulase, an enzyme that allows for extraction of fibrin (which is impenetrable by white blood cells) to be used as both a weapon and defense.]]
968* MeaningfulName: Her genus means "grape cluster," due the clumps they form in small groups (both her "hair" and "dress" are grape-shaped). Her species means "golden," and she's properly presented as a yellow bacterium.
969* NoblewomansLaugh: Will occasionally raise a claw to her mouth and laugh haughtily.
970* {{Ojou}}: Her design (including OjouRinglets) and mannerisms make her a clear ShoutOut to this.
971* RecurringBoss: Is faced two times in the manga, one in chapter 4 (episode 2 of the anime), leading numerous bacteria that take advantage of the scratch to invade the body, and later in chapter 15, where a group of them appears intending to conquer the nasal cavity.
972* TertiarySexualCharacteristics: She sports prominent eyelashes, an indicator of her gender.
973* VillainOfTheWeek: Of the second episode of the anime and the 4th chapter of the manga, where she is the leader of a group of bacteria who take advantage of the scratch to enter and infect the body. The sisters of that ''S. aureus'' play this role in chapter 15, this time invading the nasal cavity.
974[[/folder]]
975
976[[folder:''Streptococcus pyogenes'']]
977[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/s_pyogenes_anime.png]]
978
979->'''Voiced by:''' Creator/MasayaMatsukaze (Japanese), Creator/LandonMcDonald (English)
980
981A very common red-colored bacterium that resides in the pharynx, the digestive organs and the skin. Produces many diseases.
982----
983* AnimalMotif: His red coloration, huge sting whip with a blade at the end of it and his arms that ends in blades gives him the image of a scorpion.
984* BewareMyStingerTail: Not a tail, but has some kind of biological whip from the back of his head with a blade attached to it. He uses this to fight and to grab his victims.
985* BladeBelowTheShoulder: His arms ends in some kind of tiny blades.
986* TheBusCameBack: Two of them appears again in chapter 10/episode 8 trying to ambush [=AE3803=] during her travel through the circulatory system. They are easily defeated by U-1146 (who was watching over her).
987* ColourCodedCharacters: He is primarily red.
988* CurbStompBattle: Both of their appearences ends with them being easily defeated by the neutrophils.
989* {{Mook}}: One of them acts as this for ''Staphylococcus aureus'' during the scratch episode. He is quickly killed by U-4989 and U-2048 when he tried to attack the red blood cells along with a Pseudomonas.
990* SpikesOfVillainy: Possesses four spikes on his shoulders, and has lots more in his head-whip.
991[[/folder]]
992
993[[folder:Cedar Allergen]]
994[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/pollinosis_anime.png]]
995
996->'''Voiced by:''' Creator/KazuyukiOkitsu (Japanese), Creator/ArmenTaylor (English)
997
998Large, slow-moving beings from cedar pollen. Unfortunately for all the cells involved, the body is ''very'' allergic to cedar pollen.
999----
1000* AntiVillain: [[https://www.youtube.com/watch?v=T5OwqV1RNR4&t=3m15s As one doctor points out]], they're just harmless male sex cells in a protective layer, trying to find female flowers to germinate. They're just looking in the wrong places.
1001* MonsterOfTheWeek: Of chapter 2 of the manga/episode 5 of the anime.
1002* NonMaliciousMonster: As U-1146 points out, unlike bacteria or viruses, they don't cause an illness by themselves. As it is shown, the problem is the immune system overreacting to their presence, which is what an allergy is.
1003* NotSoHarmlessVillain: {{Downplayed}} example. They initially appear innocuous and easy to kill, but once they multiply, they start to cause destruction. However, the biggest threat they present are not themselves, but rather [[PlotAllergy what their presence makes the immune system do]]...
1004* PokemonSpeak: The only thing they are able to say is "Cedaaar".
1005* SympathyForTheDevil: White Blood Cell seems sympathetic towards them, citing that even though it was his job to destroy them, he at times still pitied them. In the anime, Red Blood Cell agrees, and both fold their hands in a DueToTheDead.
1006[[/folder]]
1007
1008[[folder:Steroid]]
1009[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_04_at_113912_pm.png]]
1010
1011Medicine taken to control allergic reactions. Appears as a robot destroying everything in sight.
1012----
1013* ArchEnemy: To Mast Cell and B-Cell, targeting them above all other cells due to their actions being the catalyst for the excess histamine response, though it's certainly not choosy about going after basically any other cell that gets in its way.
1014* DestructiveSavior: While it is medication designed to abate allergy symptoms, it's bad news for the cells in the body, as it attacks them indiscriminately and devastates the surrounding landscape.
1015* EyeBeams: Uses this to introduce itself.
1016* GatlingGood: Has one on each hand.
1017* KillerRobot: Attacks ''everything'' indiscriminately and disproportionately.
1018* MonsterOfTheWeek: Episode 5 of the anime/Chapter 2 of the manga, though it isn't so much a "monster" as it is a DestructiveSavior that indiscriminately attacks the Cedar Allergens ''and'' the cells trying to protect the body from them.
1019* MoodWhiplash: After obliterating a large chunk of city, the steroid runs out of power and pops out confetti, saying "Thank you for your patronage!" in a dissonantly polite voice.
1020* PersonOfMassDestruction: Its damage output far exceeds that of any cell or invader, as it all but levels every structure in the immediate vicinity with its ordnance.
1021* SoundtrackDissonance: Once the steroid is identified, grand, upbeat classical music plays as it wreaks havoc.
1022* TheresNoKillLikeOverkill: The steroid shoots everything in its vicinity to get the cells to stop reacting to the cedar pollen allergen. In real life, it's a better idea to take an antihistamine or nasal spray for allergic rhinitis, so the host overdid the medication by swallowing a steroid pill.
1023* WhenAllYouHaveIsAHammer: Its single job is to stop the body from producing excess histamine by any means necessary, including laying waste to everything in sight.
1024[[/folder]]
1025
1026[[folder:Influenza]]
1027[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_07_31_at_22701_am.png]]
1028
1029The flu virus, which parasitizes normal cells and converts them into zombie-like creatures.
1030----
1031* TheBusCameBack: After the influenza outbreak of chapter 3/episode 3, they return in chapter 21. [[spoiler: This time, however, it is a different kind of influenza, [[EvilEvolves adapted to the defenses of the body]] thanks to their Antigen Shift.]]
1032* EvilEvolves:
1033** By the end of episode 3, [[spoiler:a single infected cell remains. When Effector T. Cell tries to destroy it, he is instead easily defeated by the virus, and B Cell's antibodies fail to do any harm to it. Then U-1146 notices it has evolved to influenza A. [[OhCrap Cue everyone realizing how screwed they are]].]]
1034** In chapter 21, [[spoiler: the influenza returns to the body. However, thanks to the high mutability of the virus, it evolves once again. This time they are defeated thanks to Dendritic Cell's cytokines (AKA a bunch of embarrassing photos of all the cells of the immune system that turns them into unhinged killing machines).]]
1035* MonsterOfTheWeek: Of chapter 3 of the manga and episode 3 of the anime, respectively.
1036* OurZombiesAreDifferent: Unlike standard zombies, these guys can infect other cells just by spreading the virus spores to nearby normal cells, which makes them a pain to contain and kill.
1037* ParasiteZombie: The infected cells are parasitized by the influenza virus, that turns them into mindless zombies.
1038* PokemonSpeak: They tend to only make hissing sounds, "SHA".
1039* RecurringBoss: Appear two times in the series; one in chapter 3 and another one in chapters 21 and 22.
1040* TornadoMove: They produce stomachache by running in circles in line and creating tornadoes.
1041* TruthInTelevision: Unlike the bacteria, which are anthropomorphic villains, the viruses are inert, inanimate objects that indeed look just like they do in real life.
1042* ZombieApocalypse: The virus consists of small red balls with sticks emerging out of them (that's how the virus looks in real life) that work by attaching themselves to the heads of Ordinary Cells, turning them into zombies.
1043* ZombieGait: Averted. These zombies run fast and can even climb buildings to get to the other normal cells.
1044[[/folder]]
1045
1046[[folder:''Vibrio parahaemolyticus'']]
1047[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/s_vibrio_anime.png]]
1048
1049->'''Voiced by:''' Itaru Yamamoto (Japanese), Creator/ArmenTaylor (English)
1050
1051A bacterium that causes gastrointestinal disease.
1052----
1053* AnimalEyes: He had insectoid compound eyes, while his minions only had one eye each.
1054* FlunkyBoss: Brings in a group of floating bacteria minions when invading the body.
1055* KillItThroughItsStomach: How he meets his end at the hands of U-1146 after swallowing him.
1056* MonsterOfTheWeek: {{Subverted}}. It looks like he is going to be the one of chapter 5/episode 4, but he is quickly killed by U-1446 before the true threat of the episode appears.
1057* MookMaker: Spawns smaller bacteria to fight for it.
1058[[/folder]]
1059
1060[[folder:''Anisakis'']]
1061[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/anisakis_anime.png]]
1062
1063A parasitic nematode that attacks the digestive system.
1064----
1065* CurbStompBattle: Gives one to the neutrophils, who are unable to harm it. [[spoiler:Then on the receiving end by Eosinophil, [[OneHitKill who kills it with one hit of her weapon]].]]
1066* GlowingEyesOfDoom: Makes its entrance with this as it emerges through the stomach wall.
1067* MightyRoar: Shouts one strong enough to send all of the neutrophils flying away.
1068* MobySchtick: The way [[spoiler: Eosinophil kills it with a harpoon]] has shades of this.
1069* MonsterOfTheWeek: The main threat of chapter 5/episode 4, upstaging the ''Vibrio parahaemolyticus'' who appeared at the beginning of the chapter, who is easily killed by U-1146.
1070* RentAZilla: Is presented as a giant behemoth who destroys everything in sight.
1071* SlipperyAsAnEel: Though the anisakis is a parasitic nematode worm and not a fish, in this series it's presented with a head akin to that of a moray eel, instead of the worm-like head it has in real life, probably to make it more intimidating.
1072[[/folder]]
1073
1074[[folder:''Pseudomonas aeruginosa'']]
1075[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/s_aeruginosa_anime.png]]
1076
1077->'''Voiced by:''' Riki Kitazawa (Japanese), Bill Rogers (English)
1078
1079A bacterium that can cause several afflictions. Attacked [=AE3803=] in her childhood as an erythroblast.
1080----
1081* TheBully: The reason why he infiltrated in the body was to torment smaller, weaker cells to his own amusement.
1082* ColorCodedCharacters: It has a green colour similar to its cultures. This is also what its species name "aeruginosa" (copper-rust) comes from, although it could also be a reference to the pyoverdin pigment that the actual ''P. aeruginosa'' produces.
1083* {{Cyclops}}: Is a relatively big bacterium who only possesses one big, yellow eye.
1084* EvilIsPetty: Unlike other bacteria, he doesn't needs the nutrients of the body to survive; he just wants to pick on (and later kill) smaller cells for fun.
1085* EyeScream: When he attacks her, [=AE3803=] (as an erythroblast) throws her hat into his eye, causing him to scream in pain.
1086* EyesDoNotBelongThere: Can grow eyes and [[TooManyMouths mouths]] on his tentacles. [=AE3803=] and U-1146 as kids were terrified when he uses this as intimidation.
1087* ForTheEvulz: His motivation to attack those weaker than him is basically because he wants some fun.
1088* {{Mook}}: One of them acts as this along with other bacteria during the scratch episode. He is quickly killed by the neutrophils.
1089* SmugSnake: He is confident and arrogant while attacking those who are weaker than him, but he is easily killed by the neutrophil teacher of one strike without many problems.
1090* StarterVillain: While he isn't the first infectious threat to be featured in the series, InUniverse he is the first one that Red and White Blood Cell encounter, as he had menaced them back when they were kids.
1091* TruthInTelevision: He's the most blatantly ForTheEvulz of all the pathogens seen in the show, which is a perfect metaphor for the ''Pseudomonas aeruginosa'''s nature - unlike other dangerous germs, they don't need a host body to survive and reproduce efficiently, but when given the opportunity, they still cause very dangerous infections just because they can.
1092* VillainOfTheWeek: Of chapter 7/episode 6.
1093* WouldHurtAChild: He enjoys bullying young cells by slapping them with his tentacles.
1094[[/folder]]
1095
1096[[folder:''Bacillus cereus'']]
1097[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/04_6.jpeg]]
1098
1099->'''Voiced by:''' Creator/KosukeToriumi (Japanese), Creator/JoeZieja (English)
1100
1101An opportunistic bacterium that invades the body during the heatstroke episode.
1102----
1103* BioArmor: All of his body, except for the face, is covered in white biological armor which can withstand high temperatures.
1104* CombatTentacles: Has lots of them. He also has others to move through his environment.
1105* DirtyCoward: He prefers to run from the Neutrophils and mess with them, rather than confront them personally, as he knows they are stronger than him.
1106* EvilGloating: Starts to tell U-1146 how their world is about to die and that they don't have any chance to win against the heat that's menacing the body. Doesn't stop U-1146 from fighting against him.
1107* EvilLaugh: Does this all the time, especially when he has the upper hand over his enemies.
1108* HighPressureBlood: Spurts a geyser of blood once U-1146 catches up to him, though that may be just U-1146's pay back for all the trouble he had done.
1109* KickTheDog: Noticing some red blood cells reaching for the last pitcher of buckwheat tea, he grabs it and dumps it to the floor right in front of the dehydrated White Blood Cell, for no other reason than just because he can.
1110* OhCrap: Has a spectacular one once [[spoiler: U-1146 reappears behind him after the body is rehydrated.]]
1111* SmugSnake: He's full of himself and his victory, once he manages to escape from the neutrophils and defeat U-1146. [[spoiler: The fact that U-1146 kills him easily (and violently) after the heatstroke is properly resolved speaks volumes about how weak he truly was.]]
1112* TemptingFate: After defeating U-1146, he starts to claim that now the body is his and no one can stop his victory... [[spoiler: Seconds later, the body is re-hydrated, the cells are refreshed and U-1146 appears behind him...]]
1113* VillainOfTheWeek: Of chapter 6/episode 11.
1114* WorfHadTheFlu: His virulence is quite low, but a heat stroke leaves the immune system unable to deal with him properly, allowing him to defeat U-1146.
1115* YellowEyesOfSneakiness: A yellow-eyed, sneaky little pest who wants to take over the body.
1116[[/folder]]
1117
1118[[folder:Dengue Virus]]
1119[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/image_2022_06_22_002100717.png]]
1120
1121The virus that causes dengue fever, which infects the body after being brought in by a mosquito bite.
1122----
1123* BlowYouAway: Once the mask is attached to the Langerhans Cell, they develop the ability to create powerful gusts of wind.
1124* MonsterOfTheWeek: In chapter 16 of the manga.
1125* ParasiteZombie: The infected Langerhans Cells are parasitized by the dengue virus, that turns them into zombies with the ability to manipulate wind.
1126* PokemonSpeak: The only thing the infected Langerhans Cells are able to say once they are infected is "Deng".
1127* {{Tengu}}: The overall motif of those who are infected by the dengue virus, since in Japanese "dengue" is pronounced in a very similar way to "tengu". The victims wear tengu masks that clamp to their faces and gain BlowYouAway powers, referencing how tengu are often associated with wind.
1128* ZombieApocalypse: The virus consists of Tengu masks with tendrils that clamps the mask to the victim's face. This affects Langerhans Cells, turning them into super-powered zombies.
1129[[/folder]]
1130
1131[[folder:Rhinovirus]]
1132[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2019_01_08_at_82504_am.png]]
1133 [[caption-width-right:350:The infected cells.]]
1134[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2019_01_08_at_82616_am.png]]
1135 [[caption-width-right:350:The virus itself.]]
1136
1137-->'''Voiced by:''' Creator/MakotoFurukawa
1138The virus responsible for the common cold.
1139----
1140* ColorCodedEyes: As shown in the anime adaptation, the Rhinovirus-possessed Cell that we follow has green eyes, signifying that he's untrustworthy.
1141* HoistByHisOwnPetard: Thanks to the traces of RNA it left on a prank gift, Killer T Cells were able to mobilize and easily track it down for a quick cleanup.
1142* MonsterOfTheWeek: Of chapter 11 of the manga.
1143* OurZombiesAreDifferent: Unlike the Influenza Virus, they still have some degree of self-control and personality. One affected cell even played pranks on Killer-T, U-1146 and Helper-T Cell and targeted an Ordinary Cell's cloning machine.
1144* ParasiteZombie: The infected cells are parasitized by the rhinovirus virus that turns them into zombies. This one however at least have some degree of personality, as they like to play pranks on others.
1145* PokemonSpeak: Communicates by saying "Keh".
1146* ThePrankster: An evil variation. Loves to play pranks on other cells (particularly, the ones of the immune system, as Killer T Cell, U-1146 and Helper T Cell all become victims of his antics), but at the end of the day, it's a virus that wants to take over the body.
1147* {{Troll}}: It loves playing pranks, and it gains Ordinary Cell's trust by running circles around the various immune cells.
1148* ZombieApocalypse: The virus consists of a hat with stars on it (based on [[ShownTheirWork how the virus actually looks]], believe it or not) and teeth inside that attaches itself to the heads of Ordinary Cells, turning them into zombies.
1149* ZombieGait: Averted. Like the Influenza, infected cells can spread fast enough to cover a neighborhood in a span of two pages in the manga.
1150[[/folder]]
1151
1152[[folder:Cancer Cell]]
1153[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/screen_shot_2018_08_11_at_85153_pm.png]]
1154[[caption-width-right:350:Disguised]]
1155[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/cancer_cell_anime_9.PNG]]
1156 [[caption-width-right:350:True Form]]
1157
1158->'''Voiced by:''' Creator/AkiraIshida (Japanese), Creator/KhoiDao, Creator/LauraStahl (young) (English)
1159
1160A cancer cell. First masquerading as a normal cell, he quickly reveals himself as someone who wants to take down the entire body, in revenge for being hunted all his life.
1161----
1162* AndThereWasMuchRejoicing: [[spoiler:An in-universe case. As he dies, the other cells celebrate his demise, as it marks the end of a terrible threat to the whole body. Out of universe, the fans' reaction was [[AlasPoorVillain markedly different]].]]
1163* ArchNemesis: Is this with Killer T Cell Squad Leader and Natural Killer Cell. Holds a particular grudge against Killer T Cell for calling him a "Buggy Bastard" which is [[spoiler:what the cells who hunted Cancer Cell in his youth called him]].
1164--> "I hate Memory T's and NK's guts. I want to smash everything that's dear to them."
1165* ArtisticLicenseBiology: From a real life perspective, while Cancer Cells are very nasty and damaging to the body, they don't directly hurt cells and instead indirectly harm them by depriving the body of nutrients or taking up healthy tissue. They are unable to directly attack immune cells like this Cancer Cell has shown the ability to do so.
1166* BackFromTheDead: [[spoiler:Due to his antibody information and genes being leaked, he manages to be rebuilt by Chapter 23.]]
1167* BerserkButton: Call him a "Buggy Bastard" and see what happens.
1168* BigBad: He acts as the ArcVillain for the "Cancer Cell" arc [[spoiler:as well as the "Return of Cancer" arc]], being the only specific individual antagonist to directly antagonize the cells for more than one chapter/episode (every one of the germs constitute a swarm of their kind, so when they show up again in more chapters/episodes, it's different individual germs). [[spoiler:With him genuinely coming back to life with his memories intact in the "Return of Cancer" arc, he gets upgraded from ArcVillain to genuine BigBad, as no matter how many times he's killed he'll just keep on coming back for another round of trying to destroy the body, as his very existence is just an error in the genetic coding of all cells that will continuously pop up despite the cells' best efforts.]]
1169* BodyHorror: Looks like a normal generic cell, but with deformed limbs and head.
1170* TheBusCameBack: [[spoiler: Is rebuilt by Chapter 23, due to his antibody information containing his genes somehow being leaked.]]
1171* CameBackStrong: [[spoiler: He was fairly strong the first time around, but when he's rebuilt, his strength has increased, the range and techniques of his VoluntaryShapeshifting has expanded, and on top of that, he has caused Regulatory T Cell to [[FaceMonsterTurn side with and protect him]].]]
1172* DrivenToVillainy: He argues that his only crime was coming into existence and by no choice of his own, where he immediately gets hunted down by immune cells and watches one of his comrades getting slaughtered. This left him bitter and vengeance driven and decides to take it out on the whole body.
1173* DyingSmirk:
1174** The first time he's happy that U-1146 hears him out and acknowledged him as a cell even if he has to kill him for the sake of the body.
1175** [[spoiler: The second time, he's fine to be killed by someone he considers a friend, which somewhat disturbs U-1146.]]
1176* EarlyBirdCameo: In the anime; During the scrape wound episode, he helps [=AE3803=] back up when she trips running away from the bacteria.
1177* EvilCounterpart: Can be seen as one towards Ordinary Cell; on top of looking like him, while Ordinary Cell wants to do more than what he was assigned and to help the body, Cancer just wants to be normal but decides to destroy the body when that's not an option.
1178* EvilMakesYouUgly: Inverted. It's more his ugliness as a defective cell that was in part what led him to become evil.
1179* EvilPlan: After cornering him, Natural Killer Cell explictly asks him what his "evil plan" is, but he refuses to tell her until after he has thrashed her, Killer T Cell Leader and U-1146. That ''was'' his evil plan, revenge on the Immune System which hunted him like a monster. He follows this up by announcing that he will replicate without limit until the body can no longer function.
1180* {{Expy}}: He's a clear reference to [[Manga/TokyoGhoul Ken Kaneki]] in both appearance and powers.
1181* FauxAffablyEvil: Particularly towards White Blood Cell. His soft-spoken and polite manner of speech only serve to highlight his twisted and deranged nature.
1182* GrowingWings: [[spoiler: He sprouts two wings [[BodyHorror (made of flesh)]] from his back when he's about to take over the body. Fortunately, he is stopped by a well-thrown cleaver (courtesy of Macrophage) before he can get any further.]]
1183* HiddenInPlainSight: Can make himself look like a perfectly Ordinary Cell, if needed. [[spoiler: He uses this to lure the Immune cells back to his hideout, by pretending to be attacked by another cancer cell.]]
1184* HorrorHunger: Several Cancer Cells are seen viciously devouring food with insatiable hunger, to the horror of the Red Blood Cells delivering it to them. TruthInTelevision as Cancer Cells produce cytokines which causes more nutrients to be delivered to it so it can metastasise.
1185* IDieFree: A {{Deconstruction}}, since [[spoiler: he sees himself as being oppressed and hunted by the immune system simply for existing, and his plan is to kill the entire body before they can kill him. In his view this makes him "free" for breaking the cycle of existence for all cells. it's mostly an attempt to justify his SuicidalCosmicTemperTantrum rather than any actual attempt at being "free".]]
1186* IJustWantToBeNormal: Cancer's main motivation. He feels victimized because he was born a cancer cell due to no fault of his own (it's implied the technician on duty messed up because they were tired), and has been hunted like a beast by cells who should have been his friends. Now he wants everyone else to experience the same thing as he hunts them and ultimately destroys the body.
1187* IJustWantToHaveFriends: Part of his hangup is that the Immune cells who were supposed to be his guardians instead hunted him down, thus driving him to intense loneliness. So he tried to copy himself to cure his loneliness. His HQ is plastered with signs saying, "MAKE MORE FRIENDS!"
1188* ItsAllAboutMe: He knows that his very existence means death for the world and millions of innocent cells and he doesn't care. All he cares about is getting revenge on the Immune Cells who hunted him for being defective.
1189* KnightOfCerebus: While fights against germs can be pretty brutal, the villainous characters are typically portrayed as [[LaughablyEvil cartoonishly evil and hard to take seriously]] which fits with the lighthearted tone of the series. This all changes when Cancer Cell appears, bringing about a whole new level of despair and ups the stakes greatly, especially given he's a TragicVillain. He's also the closest thing this series has got to a BigBad.
1190* LovecraftianSuperpower: His abilities involve lots of BodyHorror, CombatTentacles, ShapeshifterWeapon, ShapeshifterMashup and PowerUpgradingDeformation. It's not a pretty sight.
1191* MeatMoss: Can create tumor-like extensions from his own flesh to attack and subdue Immune Cells.
1192* MesACrowd: As a cancer cell, he's constantly multiplying with no regard for restrictions.
1193* MultiArmedAndDangerous: Has the ability to multiply his limbs to fight. Often combines this with CombatTentacles.
1194* OneManArmy: He can manhandle three powerful Immune Cells at once, each of which are usually capable of taking on swarms of nasties on their own.
1195* PowerEchoes: In his true form his voice has a reverb effect to add to his threatening vibe, and contrast with his Ordinary Cell disguise.
1196* PutThemAllOutOfMyMisery: Believes it's unfair that he was born against his will as a cancerous cell and exists solely to be hunted down and destroyed to protect the body. Therefore, he resolves to make use of his function and destroy the entire body and all its inhabitants, rather than letting himself be killed to preserve their lives.
1197* {{Revenge}}: His primary motivation for the chaos he causes, is to give the Immune Cells a taste of what it's like to be hunted and helplessly overpowered just as he was.
1198* ShapeshifterMashup: [[spoiler: His final attempt to take over the body involves making a "tower" of an unholy amount of flesh, limbs, heads and veins.]]
1199* ShapeshifterWeapon: In addition to [[CombatTentacles creating]] [[MultiArmedAndDangerous additional arms]], he can also shape his main arms into blades or shields.
1200* SuicidalCosmicTemperTantrum: Wants to destroy the world (i.e. the body) in retaliation for having been hunted all his life.
1201* ThenLetMeBeEvil: Bitter over being treated as a defective anomaly from the instance he came into existence, he decided that since he was branded a threat then he would be the biggest threat to the body possible.
1202* ThisCannotBe: [[spoiler: His reaction when NK (powered up by laughter) defeats him easily with one strike.]]
1203* TragicVillain: His actions are motivated from the fact that he had to live in constant fear of dying his whole life when he never intended to do anything bad and just wanted to live his life peacefully. All the evil things he does are acts of desperation after being persecuted since the moment he was born.
1204* VoluntaryShapeshifting: Can shapeshift into bizarre forms to help fight better. It usually involves extra arms of differing sizes.
1205* WakeUpCallBoss: After dealing with bacteria, viruses and parasites, who were defeated with relative ease and only lasted a maximum of one chapter, he ends up being a greater challenge for the immune system than the previous enemies, lasting more than one chapter and even [[spoiler: defeating U-1146, Killer T Cell and NK until the reinforcements who [=AE3803=] called appear.]]
1206* WeWillMeetAgain: [[spoiler: Before being killed by U-1146, he says that one day he will return to the body and kill him. In response, U-1146 says that, no matter how many times he comes back, he and the other members of the immune system will be sure to deal with him again and again. Sure enough, he returns in Chapter 23, and when he's defeated again, his last words are "See you again... White Blood Cell."]]
1207* WoobieDestroyerOfWorlds: He was born wrong, through no fault of his own, and from the moment of his birth lived in fear and confusion of why he was being hunted down by the cells who were supposed to be his friends. When he realizes that he is a freak and supposed to die, he goes into a rage and decides to take down the entire body with him.
1208[[/folder]]
1209
1210[[folder:''Helicobacter pylori'']]
1211[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/h_pylori_208738.jpg]]
1212->'''Voiced by:''' Creator/JunFukushima (Japanese)
1213A large worm-like creature found in the stomach. They are bacteria resistant to acid and can cause gastrointestinal diseases.
1214----
1215* AchillesHeel: ''H. pylori'' are weak to lactic acid produced by lactic acid bacteria. Unfortunately for this guy, a bunch of them was exactly in the place of its invasion.
1216* CreepyCentipedes: Appears as a giant centipede with five eyes on its head and tentacles that it can use as drills or to lift itself up.
1217* MonsterOfTheWeek: In chapter 20 of the manga.
1218* VisualPun: ''Helico''bacter Pylori has a set of helicopter rotor-like blades on its head.
1219[[/folder]]
1220
1221[[folder:Opportunistic Bacteria]]
1222[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/image_2022_06_22_001533163.png]]
1223Bacteria found in the gut and digestive tracts. Their name is a general term for bacteria that neither help or harm the body, but side with whichever holds the advantage.
1224----
1225* ChronicBackstabbingDisorder: As implied in their name, they partner with whichever side is stronger and will abandon them at a moment's notice if the tides are turned. [[spoiler:They abandoned the harmful bacteria when the Lactic Acid Bacteria came to the rescue. The Neutrophils don't buy any of it and kill them anyway.]]
1226* LittleBitBeastly: One of them is represented as a ''[[AsianFoxSpirit kitsune]]''.
1227* RidiculouslyCuteCritter: Not so much as the good ones, but still cute, befitting their nature as opportunistic bacteria in a series where BeautyEqualsGoodness.
1228* ZergRush: They are about 70% of the bacteria found in the gut. The harmful bacteria try this tactic with the opportunistic bacteria. Unfortunately for them, the lactic acid bacteria still hold the numerical advantage.
1229[[/folder]]
1230
1231[[folder:''[=SARS-CoV-2=]'']]
1232[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/cellsatworkcovid.png]]
1233The "Novel Coronavirus", also known as COVID-19. It infects the body in the last two chapters, causing dangerous side-effects from the cytokine storm.
1234----
1235* AlmostOutOfOxygen: The hypoxia caused by the thrombosis and followed by damage to the lungs is noted to cause multi-organ failure if it continues. Thankfully, the virus is stopped during the lung inflammation phase.
1236* FinalBoss: The manga quickly ends after Coronavirus's defeat.
1237* HitAndRunTactics: They show up, irritate Killer T Cells and run away, causing T Cells to start attacking regular cells out of stress and paranoia.
1238* KilledOffScreen: After anti-inflammatory cytokines calm down Killer T Cells, it's stated that they've defeated Coronavirus, however, that isn't seen.
1239* {{Ninja}}: Its theme, mirroring how it can spread across the body and infect others for a week before any symptoms show up.
1240* RealLifeWritesThePlot: Compared to other infections in the series, this one is [[UsefulNotes/COVID19Pandemic much more prominent]] at the time of the manga's writing, that being the end of 2020. A note in the last chapter states that its mechanics are still not entirely understood.
1241* SuspiciouslySimilarSubstitute: To Influenza, with the main difference being the tactics utilized.
1242* WeakButSkilled: Individually, Coronavirus is one of the weakest viruses, dying to a single punch. However, it's more strategic than other viruses, trying to avoid T Cells entirely and indirectly harming the body through CollateralDamage.
1243[[/folder]]
1244
1245!Other
1246
1247[[folder:The Narrator]]
1248-> Voiced by: Creator/MamikoNoto (Japanese), Creator/KarenStrassman (English)
1249----
1250* DissonantSerenity: The narrator always has the same cheerful tone when explaining concepts and cell components, even when the body is succumbing to heat stroke, losing massive amounts of blood, and the like.
1251* MsExposition: Provides information and explanations regarding the workings of the various cellular organisms and structures, particularly whenever Red Blood Cell and White Blood Cell are unable to ask and provide explanations themselves.
1252* {{Narrator}}: One that is external to the story. The narrator doesn't discuss any plot points, only providing information to educate the audience. This narrator seems not to be omniscient, though -- in the heatstroke arc, she echoes the cells' puzzlement at the source of the miracle fluid entering the body.
1253[[/folder]]
1254
1255[[folder:The Human]]
1256The human that the story is set inside.
1257----
1258* AmbiguousGender: Their gender is ''never'' revealed.
1259* AudienceSurrogate: Explicitly stated in the opening narration to represent the audience's ''own bodies''. This seems to be the sole reason for keeping their identity a mystery.
1260* ButtMonkey: This poor person sure goes through a lot, though possibly {{Downplayed}} depending on how much time passes between each major bodily disaster.
1261* TheFaceless: Despite the fact that they are technically on screen in every single shot, the audience never learns what they look like.
1262* GeniusLoci: A given, since the entire series takes place inside of them. Also {{Downplayed}} since nearly everything in this setting appears to be man-made.
1263* MinorMajorCharacter: They have never properly appeared before, yet they enable the entire series to be possible to begin with.
1264* NearDeathExperience: In Episodes 11 and 12, they suffer from a hemorrhagic shock injury that comes very close to killing them, and are only saved by an emergency blood transfusion.
1265* NoNameGiven: No characters in particular ever refer to its host (the world itself) by name.
1266* PlotAllergy: The closest thing we ever get to an identifying trait from them is that they are severely allergic to cedar pollen, which forms the plot of volume 2 of the manga and episode 5 of the anime.
1267* UnknownCharacter: Very little is known about their identity aside from clearly being the outdoors-type of person, but the entire story still relies on them existing.
1268* VagueAge: The age of the host is never made clear.
1269* TheVoiceless: [[DownplayedTrope Downplayed]]. They are never heard outright speaking, but they still occasionally can be heard sneezing and/or coughing in the background.
1270[[/folder]]

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