Main Characters: Arachnid, Caterpillar, Blattodea
The Organization's "Bugs": Recurring, Exclusive to Arachnid, Exclusive to Caterpillar, Exclusive to Blattodea
Other Characters
Related series: Jackals, Choubu no Shinobi, Himenospia
More bug assassins from the Arachnid setting that are introduced by the Blattodea sequel. Page under construction as the story goes along.
Contains unmarked spoilers for Arachnid and Caterpillar.
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Japanese Cockroach/Yamato Gokiburi
Yamato Gokiburi, alias Yamato "Zero" Mitsuda
- Almighty Janitor: A homeless former cartoonist who works for The Syndicate and that can tear people apart without even trying.
- Ambiguously Related: A scene with Serena talking about her other plans besides judging whether or not Alice makes for a good Puppet Queen cuts to Yamato wandering the streets as if he, and therefore Chiyuri, were connected to her all along.
- Animal Motifs: Japanese Cockroaches, which are able to live either indoors or in the wilderness despite their habitat being invaded by non-native species. Ha.
- Calling Your Attacks: He declares barrages of attacks like he's commanding the battleship Yamato (guess that's where Chiyuri got her Pearl Harbor jokes from).
- Connected All Along: He was Osamushi's pupil alongside Kagimushi and most likely knows Kabutomushi.
- Cool Old Guy: He's a middle-aged King of the Homeless who casually blasts a crowd of zombies away from Chiyuri and Dinoponera with his bare hands.
- Foil: If Chiyuri and Dinoponera are counterparts for Gokiburi and Alice, then he's a foil to Kabutomushi. He's a more reasonable mentor who is well-liked by his roach student, unlike how Kabutomushi has a reputation for being a sadist who indirectly kills her students and has an Odd Friendship with Goki at most. His battle prowess is even established right after Kabutomushi is seen fighting for the first time in Blattodea. And unlike how Kumo forced Alice to kill him, Yamato seemingly dies preventing the zombies from getting to Chiyuri.
- Hidden Depths: To Chiyuri's surprise, Yamato works for the Organization, knew what Suzumebachi was up to and had been raising her under their orders.
- Hobos: Subverted; Chiyuri is more shocked to learn he actually has a job than that he was a member of the Organization.
- I Just Want to Be Free: Believes the pursuit of freedom is the meaning of life and themed every story of his around that.
- Jerk with a Heart of Gold: Chiyuri comments that he appears grumpy and strict but has protected her since she was a little child. He's also Older and Wiser compared to his rude behaviour as a teen, and ultimately he comes off like the most unambiguously good guy in the story so far. Also, his feats as an assassin are all left unstated.
- Ki Attacks: His ability to splatter zombies with his attacks is later explained as him empowering himself with ki. He can shoot invisible blasts named after the Wave-Motion Gun from Space Battleship Yamato and taught the skill to Chiyuri.
- Like a Daughter to Me: He took Chiyuri in to fill the place of his missing daughter, and cares a lot for her.
- Living Is More than Surviving: He taught Chiyuri not just to survive the Crapsack World of the story, but also to find fulfillment and true freedom in her life.
- Megaton Punch: Basically any hit from him tears people to pieces and he doesn't hold back against the zombies.
- Mentor Occupational Hazard: He unfortunately lasts about as much as Kumo, telling Chiyuri and Dinoponera to escape from the zombies in the sewers without him because they already bit a chunk of his arm off.
- Never Bareheaded: Wears the same kind of frilly patched hat as Chiyuri, which hides if he has antennae like the other roaches.
- No Celebrities Were Harmed: Based on Leiji Matsumoto, which explains his battleship Yamato theme.
- Only Sane Man: Given Shoichiro is being portrayed as an antagonistic prison director in Blattodea who wants Chiyuri and Setsuna killed, this leaves Yamato as pretty much the only man in the setting's Japan who isn't a rapist, a complete psycho or a horrible father.
- Papa Wolf: He's irritated at his friends thinking he has dirty thoughts over Chiyuri and readily sacrifices himself for her later when he is wounded by the zombies.
- Remember the New Guy?: The flashback scenes featuring Osamushi in Caterpillar were framed as if Kagimushi was his only prominent pupil.
- Uncertain Doom: Chiyuri is forced to leave Yamato behind while he's being overwhelmed by a crowd of zombies and he doesn't bother getting stung by Dinoponera despite stating her venom can cure the queen substance virus. He's seen wandering around alone in chapter 25, but it's unclear if he's zombified or not.
- Wisdom from the Gutter: He just pretends to be a hobo to keep a low profile while training Chiyuri, but either way he teaches her that being free doesn't mean she can be so irresponsible that she could end up in a bind, unable to do anything. Raising Chiyuri to be hard-working and reminding her to regularly brush her teeth are among the most sane things done by anyone in five installments of this series so far.
- You Fool!: Often scolds people with this line.
Spider Wasp/Bekkōbachi
Bekkōbachi, alias Karina Tsuji
- Animal Motifs: Pepsini spider wasps, making her from the get-go somebody Alice should be very suspicious of.
- Bait-and-Switch: Between Arachnid and Blattodea two different and yet similar spider-themed characters called Ayano appeared in the author's other works. Then it seems like Ayana turned up alive here, only for her to be an identical Unknown Relative that's a wasp-woman.
- Dragon with an Agenda: She gives back Alice's beloved Kumoito (or rather a copy of it) and says she'll protect her... but there's something obviously off about her behavior. It is then seen she's actually The Dragon to Serena, and not to Alice.
- Evil Aunt: Clearly a Bitch in Sheep's Clothing who wants Alice to join the Organization under threat of death.
- Family Theme Naming: Fujii for Alice and then Tsuji for her.
- Incest Is Relative: She briefly incapacitates Alice by disrupting the Kumoito's threads and turning them into sort of a vibrator while making a lascivious expression, but doesn't go beyond that. Yet.
- Manipulative Bitch: She convinces Alice to really consider accepting the role of Organization Boss in three minutes. Hanakamakiri wonders if she's just that good with words or if she's somehow manipulating Alice with her wasp abilities.
- The Mole: Pretends to work for the Organization in order to force Alice to become the Boss when in reality she's working for Serena Cervantes, a Queen who's already hidden within the Organization's HQ.
- Obviously Evil: Karina is a stranger themed after spider predators, but Alice is a clueless lonely girl who's easily seduced by knives and appears to take her words at face value. The narration funfacts even stress that tarantula hawks are agressive parasitoids who gruesomely kill spiders, making it clear she is bad news.
- Production Throwback: One to Himenospia, which itself was full of parallels with Arachnid, in terms of both Alice and Himeno being manipulated into the position of Shadow Dictator by a malicious wasp-person. Fittingly enough, she's actually working for a Serena who looks lifted straight from Himenospia.
- Razor Floss: Certain spider wasps can manipulate the threads of their prey, so Karina not only suspiciously gifts the Kumoito back to Alice but also understands how it works and can plainly see any traps set around her. By touching the strings she can disrupt Alice's control over them, which is of course portrayed as long-ranged molestation.
- Revealing Hug: She claims she'll protect her niece while holding her shoulders from behind, with a rather evil look on her face and the ominous image of a parasitoid wasp that can control spiders in the background.
- Strong Family Resemblance: She looks exactly like Ayana, like a taller Alice with slighty longer hair.
- Unknown Relative: Karina is a second cousin in relation to Ayana and Alice didn't know of any family members other than her mother and her uncle Yoshio.
Mecoptera
Mecoptera (擧尾蟲), alias Pirno Crasco (ピルノ・クラスコ)
- Co-Dragons: Pirno is introduced while reporting directly to Serena alongside Karina. They seem to be filling in for Joyce and Marjorie, the two female bodyguards that the Himenospia incarnation of Serena had.
- Creepy Shadowed Undereyes: Her eyebags, puffy spiky hair and labcoat give her a messy Mad Scientist vibe.
- Sweet Tooth: She's seen licking a swirly lollipop while discussing evil plans with Serena and Karina.Karina: You're in front of the Queen. Put away that lollipop, Pirno.Pirno: I am slowly storing it inside my body right now, nya.
- Verbal Tic: "Nya".
Zoraptera/Juzuhigemushi
Zoraptera (ジュズヒゲムシ; Juzuhigemushi), alias Tengyō (天仰)
A monk-like assassin who rules over the Takobeya room at Hibarigaoka Prison.- All Men Are Perverts: Men are bad. So here's a guy drugging women to enlarge their boobs because men... are bad.
- Animal Motifs: Zoraptera, or angel insects. Relevant quirks on certain species include a dominance structure in which a male collects a harem of females from rivals and fertilization being accomplished by transfer of a spermatophore with a single giant sperm cell to the female.
- Attempted Rape: He doesn't directly try to rape Chiyuri and Setsuna after they're drugged, and instead asks them to join his sex slaves who are swarming around him. This fails due to Chiyuri's resistance to toxins.
- Bald of Evil: A deceptively friendly bald man with Big Ol' Eyebrows and a Beard of Evil.
- Curb-Stomp Battle: Juzuhigemushi just lays about getting fawned on by his servants after they trick Chiyuri and Setsuna into drinking aphrodisiacs, expecting the two girls to join the fun. Chiyuri is hardly affected and wastes no time beating the shit out of him before he can lay his hands on either herself or the incapacitated half-zombified Setsuna.
- Depending on the Artist: Compared to the sketches Murata sent him
, Tokisada made Juzuhigemushi's beard slighty longer, drew his eyebrows reaching around his head and even changed his whole costume. - Dirty Old Man: The staff Chiyuri and Setsuna find at the Takobeya room are all busty women and he's said to treat them like slaves. He forces them to trick and drug both girls so he can attempt to rape them.
- Enfant Terrible: Juzuhigemushi's backstory shows he was terribly perverted as a little boy, learning to molest girls when he was just 3 years old and getting a teacher pregnant when he was 10. He was sent off to a Buddhist temple to be rid of his carnal desires, but the training seems to only have awakened his bug-like sex powers and turned him into twice the rapist.
- Even Evil Has Standards: He greets Chiyuri and Setsuna telling them not to worry because he doesn't kill needlessly.
- The Hedonist: He's content to just sit around at the Takobeya room getting reverse gangbanged by his sex slaves and just encourages Setsuna and Chiyuri to also liberate themselves before him. Because of this attitude he ends up getting defeated by Chiyuri without putting up a fight.
- Kick the Dog: Like most of the other antagonists in the series, he instantaneously marks himself as a scumbag by threatening the female protagonists with rape. Chiyuri and Setsuna are then illogically threatened with more rape and death just for standing up to him, making all the other people in the prison who are supposedly A Lighter Shade of Black than Serena seem terribly unsympathetic.
- Living Aphrodisiac: The attempt to turn the extremely perverted Juzuhigemushi into a buddhist monk resulted in him physically "eliminating sin" from his body by sweating estradiol that lures women to him. Once he realized this, he went straight back into being a rapist.
- Monster of the Week: The proper Starter Villain for Chiyuri after she and Setsuna enter the prison-shelter. A Quirky Miniboss Squad is introduced the moment after his defeat.
- Punny Name: "Juzu" refers to a japamala and "hige" means beard. He's a bearded monk with prayer beads.
- Rape Is a Special Kind of Evil: Him being a rapist who forces his female slaves to take aphrodisiacs that leaves them with giant boobs is hardly special at this point in the series, so this trait is exaggerated by having him be a complete sleazeball from birth. And all that does is make him overlap with the perverted weaver ant triplets.
- Sinister Minister: He dresses up as a monk and uses Buddhism as an excuse to enslave women.
- Slipping a Mickey: The bottled water his servants give to Chiyuri and Setsuna turns out to be mixed with aphrodisiacs. Thanks to her zombie infection (and to how she was drinking most of her bottle in the background), Setsuna starts feeling weird way faster than Chiyuri does...
- Spear Counterpart: One to the Army Ant Queen, as he's exploiting his powers to make women submit themselves to his will. Unlike her who was Driven to Villainy, he does it because he's a complete jackass.
Megaloptera/Hebitonbo
Hebitonbo (蛇蜻蛉), alias Magotaro Viton (ヴィトン孫太郎)
The first of Kagimushi's Quirky Miniboss Squad who tries to attack Chiyuri. Gets knocked down without a fight by Setsuna.- Animal Motifs: The Megaloptera order contains alderflies, dobsonflies and fishflies motifs for this guy to use. He's large like a male dobsonfly, but also agressive and vulnerable to toxins like that bug's larva. It's even noted that Magotaro actually knew those bugs and identified with them since he was a child.
- Ax-Crazy: It is said that Hebitonbo attended a school where students and teachers alike were all inexplicably forming gangs and beating the shit out of each other. The police only intervened when he went to the extremes of murdering his entire class at once.
- Card-Carrying Villain: Makes his entrance breaking through the top of a doorframe with his face while bragging about how much he's willing to violate and kill people. He only engages Hibiki in combat because the man had broken through the door itself before he did, and he keeps calling his own actions violent like a Verbal Tic.
- Enfant Terrible: He's said to have been terrifyingly violent as a child, to the point he started a gang in a chaotic school just to end up killing all of his classmates for no apparent reason.
- Prophet Eyes: His unexplained blank eyes give him an intimidating appearance. Hilariously, he does get pupils on his eyes out of shock when Dinoponera hits him with her venomous needle.
- Psychopathic Manchild: Acts on irrational violence and harms both enemies and allies with no rhyme or reason. Setsuna, herself a girly ball of violence, outright calls him a big child when she says her venom can incapacitate even adults.
- Rape Is a Special Kind of Evil: Played for Laughs at this point, as he shows up declaring himself the most evil rapist psycho there is between all gratuitous uses of this trope in this series but is promptly knocked down like a joke without actually doing anything.
- Tempting Fate: Declares to Hibiki that nothing can stop his violence when he's serious... and then Dinoponera stabs him.
- Weaksauce Weakness: Despite being a large and tough man who can fight evenly with Hibiki, he gets poked by Dinoponera's venomous needle and suffers enough from the pain that he doesn't get up. The bug funfacts tie this to how dobsonfly larvae can only live in water with no impurities whatsoever.
- The Worf Effect: He's instantly defeated by Dinoponera's poison just to remind readers that yes, she still is a threatening fighter (and yes, she's then harshly humiliated by some other person only a few scenes later).
Butterfly/Kocho
Kocho (胡蝶), alias Rin Saotome (早乙女鱗)
The strongest member of Kagimushi's Quirky Miniboss Squad. A female ninja and a descendant of the protagonists from the spinoff Choubu no Shinobi. She confronts Setsuna to ruin the ant-girl's fun in massacring the prison's inmates.- Absurdly Sharp Blade: The back of her shirt's sleeves extend into hardened butterfly wing-like blades that from out of nowhere vertically bissect a man in her debut scene.
- Adaptation Relationship Overhaul: Rin and Megumi in Choubu no Shinobi were enemies who barely saw each other. Centuries later in Blattodea, their counterparts both work for the Organization and are against Chiyuri.
- Animal Motifs: Like her predecessor, Rin has moth and butterfly-based skills like being able to fight with her "wings" or releasing volatile powder.
- Demoted to Extra: In a sense. The original Rin was the protagonist of her story, while this one is just an antagonistic member of a Quirky Miniboss Squad.
- Going Commando: Introduced with an upskirt shot of her bare butt, but when the story gets back to her after a couple of chapters she suddenly has panties on. For that matter, the same chapter abruptly removes Hibiki's Perma-Stubble.
- Identical Grandson: She looks the same as her ancestor Rin from Choubu no Shinobi, complete with the same hair decorations on her head.
- Gratuitous Ninja: One point of the Choubu no Shinobi feudal Japan spinoff was that the bug-themed assassins seen throughout the series are all effectively modern ninjas. Among them, Rin is the only one specifically calling herself as such and tossing shuriken around.
- Insistent Terminology: She specifically calls herself a "shinobi" rather than a "ninja", confusing Setsuna who apparently hasn't ever heard that word before.
- Loners Are Freaks: She refuses to be Setsuna's friend and starts rambling about how friends, family and love have no place in her profession as a ninja before just trying to slice her in half.
- Named by the Adaptation: Rin in Choubu no Shinobi had no known family name. In Blattodea her counterpart's full name is "Rin Saotome".
- No-Nonsense Nemesis: Setsuna politely greets Rin and asks to be friends with no ill intent behind it for once, but Rin rejects her because as a ninja she cannot have any relationships and tries to brutally kill her on the spot.
- Reused Character Design: She's an identical-looking descendant of the heroine from Choubu no Shinobi, complete with call backs to that story.
- Super-Reflexes: Rin tries to chop Setsuna in half and instantly tosses a shuriken behind her, with the ant-girl barely avoiding both attacks at the cost of her skirt as if it was a Ninja Log. Setsuna gets the impression Rin's senses are on par with Alice's and is barely able to avoid her deadly slashes despite having Bullet Time powers.
- Too Many Belts: Wears two belts on her torso that highlight her breasts.
- Wake-Up Call Boss: Rin is met right after Setsuna has knocked off some rust from acting like a comic relief character for a good dozen chapters and is serious about killing her. Setsuna quickly realizes that Rin is about as strong as her nemesis Alice and that she must beat her to stand a chance against the challenges yet to come.
- The Worf Effect: Rin slashes Setsuna's clothes off and almost slices her in half while remaining on the same spot, just to heavily humiliate the ant-girl when she thought she had her groove back. And then Setsuna jobs to Sasori's sleeping venom right afterwards without even realizing it for good measure.
Ladybug/Tentomushi
Tentomushi (テントウムシ), alias Nanami Hoshi (星七美)
One of Kagimushi's subordinates who tries taking Chiyuri down to restore order in Hibarigaoka Prison.- Animal Motifs: Ladybugs, completing the typical beetle trio with Kabutomushi (rhino/hercules beetle) and Himekuwagata (stag beetle).
- Astonishingly Appropriate Appearance: She's a ladybug-girl whose clothes and parasol have a polka dot pattern.
- Cleavage Window: She has ample breasts and her dress has a wide and frilly gap to show them off.
- Condescending Calmness: She's a refined lady with Dreary Half-Lidded Eyes who casually talks down to Chiyuri like she's trash.
- No Sense of Personal Space: She pushes her face uncomfortably close to Chiyuri's, her serene expression momentarily twisted into a psychotic smile, and asks the hobo-roach how she feels about making enemies out of all the hitmen within Hibarigaoka Prison.
- Oh, Crap!: She shows up all graceful and ominous to fight Chiyuri with her parasol but ends up terrified when it does little to protect her from the roach's punch barrages. She only doesn't get walloped because Hiyokemushi grabs Chiyuri from behind.
- Parasol of Prettiness: She carries a sturdy parasol that she attempts to use against Chiyuri as a shield, but it is knocked out of her hands after enough punches.
- Smug Snake: Nanami acts like a major bitch to Chiyuri, berating her for making an enemy out of the Organization when all she did was protect herself and Setsuna from a rapist. The ladybug smugly brandishes that silly parasol of hers like Chiyuri couldn't just pull it out of the way and promptly gets knocked on her butt. She only doesn't get the stuffing beaten out of her thanks to Rie's intervention.
Sun Spider/Hiyokemushi
Hiyokemushi (日避蟲), alias Rie Kazamaro (風真呂利給)
Another of Kagimushi's subordinates who tries taking Chiyuri down to restore order in Hibarigaoka Prison.- Animal Motifs: Solifugae arachnids, which are often confused for spiders or scorpions. If YouTube videos are any indication, He should be a bad match up for Chiyuri... but he's quite easily beaten instead.
- Designer Babies: He was artificially born via experiments that gave him the physical traits of both the super-strong Kabutomushi and the super-fast Geji, making him superior to the Tsumugiari brothers who are just mini evil Kabutomushis.
- Dude Looks Like a Lady: Looks like a very delicate long-haired girl, but like Hanakamakiri he is mentioned to be male.
- Exotic Eye Designs: He has two diagonal lines on the bottom of his irises.
- No, I Am Behind You: Pops up behind Chiyuri between pages to keep her from decking Tentomushi on the face and tries to crush the roach between his armored arms. Chiyuri actually points out that she was paying attention to him and Hakiriari the whole time and it still happened. However, Chiyuri manages to headbutt Hiyokemushi and returns the favor by shooting a Wave Motion Gun on his back, knocking him out instantly.
- Power Fist: He has armored arms with sun spider-like mandibles hidden under his sleeves and uses them to restrain and crush his enemies.
- Smug Snake: Rie was created with the perfect balance of strength and speed, and raised to become a supremacist with no sense of morals. Like Nanami, all he does to Chiyuri is trash talk her for being homeless before being blasted onto the floor.
- This Cannot Be!: Rie crushes Chiyuri and is shocked when she survives this with no apparent injuries by "folding her spine like a finger". Then he gets Space Battleship Yamato'ed senseless.
- Tyke Bomb: Through him, it is established that the Organization's staff is artificially conceiving child soldiers and raising them to be misanthropes who see the poor and weak as expendable.
Leafcutter Ant/Hakiriari
Hakiriari (ハキリアリ), alias Kiriwa Kurogane (黒鉄霧刃)
The final one of Kagimushi's subordinates who tries taking Chiyuri down to restore order in Hibarigaoka Prison.- Animal Motifs: Leafcutter ants.
- Astonishingly Appropriate Appearance: Her costume has the appearance of leaves, and her shirt has stylistic cuts on the bottom.
- Combat Tentacles: She fights with six long tapes of sharp fabric that come out of her shoulders. They represent the spiked exoskeletons of leafcutter ants, which are reinforced with calcite and magnesium. Chiyuri tries to punch them away and ends up with nasty papercuts all over her gloved hands.
- Exotic Eye Designs: Has weird-looking eyes meant to resemble the spikes of her namesake ant.
Serena Cervantes (Unmarked Spoilers)
Serena Cervantes, alias "Queen"
Just harassing a Glasses Alice isn't enough, so she jumped series to bother the originalnote too.
A blonde sovereign who's been controlling the Organization from the shadows since Yoriko died.Warning: This entry contains spoilers for Himenospia, the series she's lifted from.
- Adaptational Badass: In Himenospia, when Serena travels to Japan to confront her rival Queen Himeno, she is unaware of who the true sovereign of Japan is. In Blattodea, Serena apparently had Yoriko on a leash all along.
- Adaptation Personality Change: She acts pretty much the same in both Himenospia and Blattodea, but in the first she wanted to execute all her would-be rivals and in the latter she wants to break them into becoming her slaves.
- Animal Motifs: In Himenospia, Serena is a mutant with a phallic Vagina Dentata sting associated with wasps, with army ant and termite motifs on the side. Blattodea, however, conspicuously avoids showing which bugs she takes after even several chapters since her introduction.
- Avenging the Villain: Serena considers Yoriko a failed slave but speaks wistfully of her, saying she's known the strepsiptera-girl "since her soul was pure". She calls herself the only important person in Yoriko's life and tells her to watch from beyond the grave as she dominates Alice and turns her into cattle.
- Big Bad: As of Blattodea. She orders Karina around and seems to have assumed control of the Organization after Yoriko died. In fact, the final page of chapter 19 retcons Yoriko as having been her slave this whole time.
- Evil Gloating: Her introduction scene is her sat upon on a throne and resting her heel on the head of a naked woman while monologing about how she wants to humiliate and enslave Alice.
- Eviler than Thou: The Organization's enforcers claim unleashing the goddamn apocalypse on Japan was necessary to keep this American Sailor Moon from doing as she pleases, and there's an air of Yoriko being retconned as somebody vaguely Good All Along who was just following Serena's orders. However, we have yet to actually see Serena doing anything nearly as callous as the things her Himenospia incarnation did, such as turning babies into brainwashed supersoldiers or killing two of the people that Himeno cared the most for and getting away with everything.
- Expy: She's meant to be one for Queen Serenity from Sailor Moon, but as a very mean Shadow Dictator. Back in Majo ni Ataeru Tettsui she looked pretty much the same as Usagi, complete with a Moon mark on her forehead.
- Expy Coexistence: In Himenospia, Serena was a Composite Character of Yoriko and Kuramoto with a bit of Dinoponera to her. Now we see she exists in this series, but both Yoriko and Kuramoto have been killed.
- Greater-Scope Villain: In the ending of Caterpillar, Suzumebachi and Hanakamakiri talk about how Yoriko's absurd actions and Depopulation Bomb plans must have been in preparation to confront an enemy "beyond their imagination" who was already infiltrated within the Organization.
- In Spite of a Nail: In Himenospia, both Serena and the Japanese "Sovereign" grow into power when red wasps of alien origin sting and mutate the two, turning them into wasp queens who can brainwash other women to do their bidding. In the Arachnid continuity there are no such wasps but people spontaneously become bug-themed mutants anyway and a Serena who looks identical to her Himenospia counterpart unlike Alice and Yoriko to theirs shows up in Japan a decade earlier doing just as well as she was in that story, if not better.
- Kneel Before Zod: She has Karina prostrate naked before her as a remake of her introduction scene in Himenospia and rests her heel on the wasp-aunt's head. It's not much impressive if it isn't Donald Trump or Shinzo Abe doing it, though...
- The Man Behind the Man: The situation so far: Sara Kurokawa pretended to be a big shot but was a decoy to Kuramoto, the Army Ant Queen. Kuramoto wanted the zombie apocalypse under her control but was lower in rank than Suzumebachi, who was brainwashed to serve the Boss, Yoriko, who wanted Kuramoto dead for the zombies to just fuck half of Japan. After some teasing about Kirigirisu and Karina following somebody else's orders behind the scenes to get Yoriko killed, it's then established that Yoriko was an unwilling slave to Serena this whole time.
- Manipulative Bitch: She actually wanted Karina to keep Alice hostile to the Organization so then the girl would be willing to go to Hibarigaoka Prison on her own, stating that Alice's resistance makes her a better potential ruler than the "failure" Yoriko was and that it's more interesting to claim her as a slave in this way.
- Older Than She Looks: Like in Himenospia, she's mentioned to be over 100 years old but with a 16 years-old appearance due to supernatural reasons.
- Remember the New Guy?: The only indication that there was a higher power enslaving Yoriko the whole time was in the ending of Caterpillar, which was published before Serena was even introduced in Himenospia.
- Reused Character Design: It's ironic how she was described in Caterpillar as being "beyond imagination" when she's a recurring antagonist in Murata's series. She first appeared in Majo ni Ataeru Tettsui as a pope in the Middle Ages and then in Himenospia as the American wasp queen. At first glance, she seems unchanged from Himenospia in the Arachnid continuity. Her name, appearance, personality and goth dress are all the same.
- Risking the King: The previous two incarnations of Serena written by Murata were actively hanging out around the protagonists and antagonising them as soon as they were introduced. The Blattodea one, after sitting around for a while, likewise simply pops up inside Hibarigaoka Prison around the time Alice arrives there. The implication is that Makoto sneaked her into the prison after earning some authority in there, but Serena doesn't even bother to hide her identity around Shoichiro.
- Slouch of Villainy: She really likes sitting ominously on fancy armchairs.
- Suspiciously Similar Substitute: She's an insect queen who wants to degrade Alice into a human slave, just like Kuramoto. In Himenospia, Serena was a retread of Kuramoto to begin with, but how much of what she had in that story is being copy-pasted to this one is unclear.
- Villain Respect: She takes an interest on Alice, the natural born killer who defeated a Shadow Dictator with god-like mind reading powers (nevermind how the one who actually did it was Kabutomushi). This contrasts with how the Serena from Himenospia saw Himeno as little more than a naive pawn for most of that story.
- Villains Out Shopping: When not being menacing, she enjoys eating curry-flavored "Cup Men" noodles while sitting around the Organization's HQ. It's a Mythology Gag to Dr. Fujimoto, the alternate universe version of Jigabachi, eating "Cup Poodle" in Himenospia practically every time he appeared.
- Walking Spoiler: Serena is now the real real main antagonist of the series and her introduction retcons Yoriko's actions in the previous installments. She is also written under the assumption that readers are already familiar with not only Arachnid but also Himenospia, which was partly a remake of Arachnid where Yoriko's role was split between Serena and the hidden ruler of Japan.
