History Characters / ACertainMagicalIndexDarkSide

* ACupAngst: She was devastated that she has the smallest cup size in ITEM, even smaller than Frenda's, and when she misinterprets Shiage's reason for Musashino milk for her, she tries to kill him. In chapter 78 (''Railgun T'', Episode 18), she fights Mikoto over an Indian Poker that was supposed to hold the secret to increase breast size.

* ThisIsWrongOnSoManyLevels: This is basically his reaction when Saiai implies that his [[{{Fetish}} interest in bunny suits]] is strong enough that he's imagining ''her'' (note: a '''[[{{Squick}} twelve year old]]''') wearing one.

She is the guide to the windowless building where Aleister Crowley resides and is a member of GROUP, forced to join when the city's Board of Directors captured her close friends and blackmailed her. Her ability is "Move Point", a ramped-up version of Kuroko's power in that she doesn't need to touch objects to teleport them. She is living with Tsukuyomi Komoe after losing to Accelerator in the Tree Diagram 'Remnant' incident.

* ArcVillain: Tree Diagram Remnant Arc.

* SuperpowerLottery: The strongest Level 4 Esper shown so far, according to WordOfGod. She can teleport objects without even touching them and has more than twice the range and more than '''twenty times''' the haul load Kuroko does. She would have reached Level 5 had she not had... [[TeleFrag an unfortunate accident]].

* {{Fingore}}: To keep her from seeing through his disguise in the light novel, Etzali tricks a {{Mook}} into rubbing an explosive onto his hand so that, when she tries to read his mind before Etzali's, the explosion tears off some of her fingers.
* SparedByTheAdaptation: Zig-Zagged. In the anime, she doesn't get her fingers blown off (presumably since she wasn't ordered to start reading minds to weed out traitors) but she ''does'' get shot at by a Six Wings attack helicopter when Etzali ruins the attempt to let the mercenaries in and gets caught in an explosion that sends her flying and knocks her out.

* ClassicalAntiHero: Similar to Touma, he suffers a lack of confidence in himself due to not possessing any supernatural abilities, not even the Imagine Breaker. When [[DavidVsGoliath he's up against stronger foes]] like [[spoiler: [[WaveMotionGun Shizuri]] or [[TheMenInBlack Academy City's forces]], he generally seems to be on the cusp of breaking out in panic.

A Level 0 and former Skill-Out gangster. As a former lackey, grunt, chaffeur, and informant of Team ITEM, he delved into Academy City's Dark Side and turned into an anomaly that made a habit of spectacularly derailing carefully-planned schemes, including Aleister's, which made him a wanted man. It must suck to be him.

* AlwaysSomeoneBetter: Poor guy feels this way about [[spoiler:both Accelerator ''and'' Touma.]]

* BadassBiker: Hopping onto the [[CoolBike Dragon Rider]] qualifies him. But, that thing is so technologically advanced that [[AllThereInTheManual just about anyone can kick ass with it]].
* BadassDriver: Most of what he does when with allied with high level espers. Its one of his few real skills and since he is very good at stealing cars as well he is able to employ his driving talents quite often.

* ButtMonkey: He gets his ass kicked by Accelerator, who succeeds in killing his boss. He then took over as leader of one of the biggest Skill-Out gangs in Academy city... only to be beaten up by Touma and Accelerator on his first day! [[spoiler:Then he became an informant/errand boy for ITEM, who treats him with no respect. Then, when he finally manned up, he is forced to run away with his girlfriend after pissing off Aleister and a psychotic Mugino!]] Boy is he unlucky.

* CoolBike: [[spoiler:The Dragon Rider in ''New Testament'' Volume 1.]]

* DefeatingTheUndefeatable: He can't claim to win against someone with a SuperpowerLottery like Touma (in fact, he did lose to Touma in a straight-up fight), but he still [[spoiler:beat a Level 5 ''three times'']]. Then he [[spoiler:sends all of Aleister's plans down the drain.]]
* {{Delinquents}}: A former Skill-Out.

* TheEveryman: Initially a random Skill-out thug who turned over a new leaf, gained a girlfriend, newfound friends ([[HeelFaceTurn one of them tried to kill him]]), and now goes on to take on odd jobs to help out ITEM.

* FromNobodyToNightmare: [[spoiler:He was just a completely unremarkable Level 0. Then he sent all of Aleister's plans crashing down.]]

** ImprobableAimingSkills: He shot down ''three people'' whilst ''falling out of a helicopter''.
* HeelFaceTurn: It can be easy to forget that this guy tried to [[spoiler:murder Mikoto's mother]] in his first appearance before he was defeated and turned over a new leaf.
* HeroicBystander: [[spoiler:Became one to save Rikou in Volume 15.]]

* IJustWantToBeSpecial: Like most members of Skill-Out, he was resentful and insecure about not having an esper ability. [[spoiler: In New Testament, when he learns about magic, he jumps at the chance to learn it, only for Levinia Birdway to tell him he won't be able to use it, much to his disappointment.]]

* JackBauerInterrogationTechnique: Mess with [[spoiler:his girl]], and he ''[[ThatsGottaHurt will make you talk...]]''

* LastEpisodeNewCharacter: Of Season 2.
* LoveRedeems: Used to be a criminal delinquent while in Skill-Out before meeting Rikou.
* MacGyvering: [[spoiler:Especially evident in ''New Testament'' Volume 3.]]
* MadeOfIron: Like many a protagonist, he's taken some serious damage and kept on coming, like getting shrapnel in his back and then a ''screwdriver'' in his ear.
* MyGreatestFailure: He regards [[spoiler:failing to stop Mugino from killing Frenda]] as this.

* NiceGuy: [[spoiler:Even if his bosses are bitchy, demanding girls.]]

* NinjaLog: Once replaced himself with a stack of cardboard boxes. Mugino [[LampshadeHanging even asked]] if he was a ninja.

* ThePowerOfLove: [[spoiler:He will protect his girl from anyone who seeks to harm her, even if that person is Accelerator!]]
* PoweredArmor: As of New Testament, he seems to have this as his niche whenever he has to hold his own in a fight alongside other heavy hitters like the others in ITEM or [[AntiMagic Touma]] or [[AttackReflector Accelerator]]. See the Dragon Rider in New Testament 1, the Power Lifter in New Testament 12, and the Processor Suit.

* PsychoticLoveTriangle: PlayedForLaughs, with [[spoiler:Misaka WORST and Umidori in ''New Testament'' Volume 3.]]

* SmokingIsCool: He lights up a cigarette in Volume 15. [[spoiler:Notably, after falling in love with Rikou he's never shown doing it again, implying that he dropped the habit altogether; considering what the pair went through to fix her body during the last arc of OT and their guardianship of Fremea from NT onwards, it's probably for the best.]]

* TheUnchosenOne: As far as everyone was concerned, he was a nothing but a powerless loser with no future. Then, all through his determination to survive and protect his loved ones, he becomes a major player whom Aiwass considers equally important to Touma and Accelerator.
* UndyingLoyalty: To [[spoiler:ITEM. Even after the team breaks up, his constant determination in keeping all the members alive results in Mugino's turn.]]
* UnwantedHarem: [[spoiler:As of Volume 22 he's officially a member of ITEM, who they refer to as "lackey".]]
* WeakButSkilled: While he has no supernatural power, he knows how to use a gun, is skilled in hand-to-hand combat, and is actually quite intelligent.
* WouldHitAGirl: Don't mess with his girl, even if you're a girl.
** Also, he was secretly recruited by the Dark Side to whack off Misaka's mom for trying to snoop in Academy City.

[[Characters/ACertainMagicalIndexEngland England and its Allies]] | [[Characters/ACertainMagicalIndexRomanCatholicChurch The Roman Catholic Church]] | [[Characters/ACertainMagicalIndexGremlin GREMLIN]] | [[Characters/ACertainMagicalIndexTrueGREMLIN True GREMLIN]] | [[Characters/ACertainMagicalIndexMagicOther Other Magic Side Characters]]\\

* GetawayDriver: Like most things they do, getaways are a collaberative effort for Scavenger. Naru provides the actual vehicles with her powers, Seike presumably uses her powers to make their vehicles faster by reducing friction, and Yakumaru provides the propellant.

* {{Foreshadowing}}: When Scavenger first appear in Railgun, Seike is the only person who isn't in the washroom with her team mates. Though the logic assumption is that hhe doesn't need to use it, an alternative explanation may be that [[spoiler:he doesn't go in because she's a boy.]]

One of the most normal-looking members of Scavenger, she is nonetheless a remorseless killer. Her esper power, Stick Slip, gives her control over friction. In Railgun, it is suggested that Seike may be a boy wearing a girl's uniform and his/her true gender is unknown.

* AmbiguousGender: When she is confronted by Mikoto, whom she had mistaken for a boy due to her disguise, Seike claims [[spoiler:that she and Mikoto "have the same thing", possibly implying that Seike is actually male]]. The cover page for the next chapter even states that her hobby is crossdressing and her true gender is unknown. It's also emphasized when Naru decides to [[spoiler:strip Seike in order to determine what color would suit her hypothetical ''toku'' uniform; while the clothes do indeed go flying off, Seike isn't shown fully on-screen, and she's covering her front and crotch in the aftermath]]. On the other hand, [[spoiler:Naru doesn't act like she saw anything "unusual" after the stripping, only commenting that Seike would be "more Blue than Black."]]

* BullyingADragon: After her unfortunate encounter with Accelerator, she finds out too late that she decided to pick a fight with Mikoto in ''Railgun''.
* ButtMonkey: Has the reputation of becoming the first member of Scavenger to be defeated by Accelerator and Mikoto in their respective series. And then there's the part where she gets stripped and fondled by Naru.
* CoolDown: She has a limit of 3 minutes per continuous power usage, so she needs to rest in between uses.
* {{Foreshadowing}}: When Scavenger first appear in Railgun, Seike is the only person who isn't in the washroom with her team mates. Though the logic assumption is that she doesn't need to use it, an alternative explanation may be that [[spoiler:she doesn't go in because she's a boy.]]
* HarmlessElectrocution: Subverted. Seike is electrocuted not once, but twice in her encounters with both Accelerator and Misaka. Misaka simply blasted her with enough power to knock her out, while Accelerator, being, well, ''[[{{Sadist}} Accelerator]]'', turned her own body's bioelectricity against her, essentially making her electrocute herself. The screaming makes it clear the experience was agony.
* HourOfPower: Can only use her powers for 3 minutes at a time.
* KickTheDog: Roughs up Ryoko Kuriba in order to see her bleed and make sure she wasn't the Doppelganger per orders, and then muses to herself on whether or not she should let her go. Then, however, she picks a fight with Mikoto for no other reason than overconfidence.

** Because she can control friction, she can use it defensively by making physical projectiles burn up before hitting her by turning the friction up...but she can't do anything about energy-based attacks like lightning, forcing her to rely on other weaknesses like creating grounding from metal wreckage to compensate.
** Also, while she can reduce or increase friction at will, she can't do ''both'' at the same time. This gets her into trouble with Naru when she uses her ability to reduce friction so her paper can't touch her, but when she needs to escape the room upon realizing Naru intends to run the CoolDown off she ''has'' to lower her ability in order to properly grab onto the door handle, which lets Naru catch her anyways.
* ManiacTongue: Tends to stick her tattooed tongue out, usually to identify her team to their would-be targets.
* NeckSnap: She can break a full grown man's neck with her bare hands.
* PersonOfMassDestruction: She can make an entire construction project fall apart just by casually walking pass it while her power is active.
* RecoilBoost: After reducing the friction between her feet and the ground, she can fire a gun in one direction so that she will slide in the opposite direction really fast. She comments that she doesn't like doing it often because it hurts and is dangerous.
* SailorFuku: Her outfit.
* SuperPowerLottery: She has control over all friction within a 1 meter radius of her. By reducing friction, she can make things slide out of control. By increasing friction, movement is restricted. A 120 ton mecha couldn't move and projectiles like bullets burn up in the air before they can reach her, rendering her practically invulnerable to most forms of direct attack...[[HourOfPower for three minutes, at least]].
* SuperSliding: Seike's Esper ability, "Stick Slip", enables her to manipulate the friction coefficient of anything she's touching. She can use this to get around by reducing the friction of the ground to zero while shooting a HandCannon behind her for a RecoilBoost, propelling her at high speeds as there's nothing to slow her down.
* TattooedCrook: Has a skull with horns and chains on her tongue.
* ThisIsGonnaSuck: She has this realize when she finally realizes who Mikoto is and she's about to get flattened.
* WellIntentionedExtremist: Downplayed. Her Railgun bio states that she doesn't share the view that teachers are evil, but goes with the flow so as to avoid causing friction within the group.

[[Characters/ACertainMagicalIndexSchools The Teachers and Students of Academy City]] | [[Characters/ACertainMagicalIndexAcademyCityLeadership Academy City Founders, Researchers and Law Enforcement]]\\

->Voiced by: Creator/AmiKoshimizu (Japanese), Creator/LydiaMackay (English)

The fourth Level 5 esper, and the leader of ITEM. Her power, Meltdowner, converts electrons into a highly destructive form of matter that exists somewhere between particles and waves. While [[CoolBigSis kind and gentle]] to her friends, she has an unpleasant [[AxCrazy personality]] once angered.

* ActionGirl: While reliant on her powers most of the time, she is quite tough and versed in hand-to-hand combat.
* ArtificialLimbs: Replaces her missing arm and eye with masses of pure energy and later, literal ArtificialLimbs.
* AxCrazy: She's calm and casual most of the time, but when angry she lets forth a truly vicious temper.
-->'''Mugino:''' Gya ha ha!! Oh, now where to start burning her? Maybe I should roast that little face of hers. Or maybe I should press against her pink *** and burn it pitch black!! Hey, what do you think, Hamazura? You'd better come out, cause I'm gonna burn her into a black mummy! Or can you still get off to fucking a hole like that!?
-->'''Mugino:''' [[spoiler:"I'll count to three. If you don't come out, I'll burn Takitsubo's *** as punishment. Of course, if you'd rather just abandon her, then you can just sit there masturbating to the stench of her virginity being burned away."]]
* BarrierWarrior: She can make shields of energy that are tough enough to withstand Mikoto's electric attacks.
* BigDamnHeroes: [[spoiler:Saves Accelerator in NT Vol 6 when he almost falls victim to Kakine's ShapeShifterGuiltTrip.]]
* BloodKnight: Battle-hungry? Check. Unnerving temper? Check. Obsesses over [[spoiler:Shiage]] after their fight? '''Huge''' check.
* BuxomBeautyStandard: She has a well-endowed chest, and is considered to be the most attractive of the ITEM girls InUniverse due to it. Frenda even brags about Mugino's chest size when trying to argue that she's 'superior' to Mikoto.
* ByTheHair: Grabs Takitsubo by her hair and mocks her helplessness as part of her revenge on Hamazura.
* CharacterDevelopment: [[spoiler:Was once TheSocialDarwinist who looked down on Level 0's, later accepts Shiage as the better fighter even though he doesn't have powers because he beat her. Becomes much calmer and friendlier in New Testament. Case in point, when Last Order teases her because she can see her panties, Mugino simply laughs and walks away, while the old Mugino would have probably killed her on the spot. She also starts learning how to cook in an effort to be more normal. When a naked Cendrillon appears in her apartment, she takes the whole thing in stride... well, until she loses her temper after Cendrillon teases her about her feelings for Shiage.]]
* ComedicSociopathy:
** [[spoiler:"I'm the girl who killed your sister. Nice to meet you." She casually says this to ''Frenda's little sister''.]]
** Mugino is pretty good at this, such as this little exchange when she was giving [[spoiler:Shiage]] a [[CountingToThree countdown]] to come out before she roasted [[spoiler:Takitsubo]]. Mugino did not give a nice, slow count, as was usual. Instead...
-->'''Mugino:''' Three-two-one-go!\\
'''[[spoiler:Shiage]]:''' [[{{PrecisionFStrike}} FUCK!]]
* ContinuityCameo: Along with the rest of ITEM, in Episode 12 of ''Railgun''. In the manga version of that scene, there was a completely irrelevant conversation that had nothing to do with the plot.
* CoolBigSis: To her fellow teammates, which goes well with her position as a leader.
* {{Cyborg}}: As of New Testament, [[spoiler:she has [[ElectronicEyes one electronic eye]] and a [[ArtificialLimbs cybernetic left arm]]. [[UnusualUserInterface Her eye can also be linked into security cameras with some wires.]]]].
* DefusingTheTykeBomb: [[spoiler:Shiage beats her twice, learning more about her state of mind in the process. She attacks a third time in what is intended to be a suicide attack by taking Body Crystal, causing her power to cause a sphere of destruction around her temporarily. After this, Shiage considers shooting her but decides not to, opting instead to at least try calming her down. It works.]]
* DisproportionateRetribution: Her form of payback.
** When Mikoto knocks her out in their fight, she wakes up a few minutes later, ''pissed'' about the headache.
** In the Febri arc of the second season of '"Railgun'', she shows up unexpectedly to blow up STUDY's robots simply because they tried to mechanically replicate her abilities.
** [[spoiler:She ''kills'' Frenda after she gives up ITEM's base of operations to SCHOOL, despite clearly seeing that she was tortured into giving up said location. And then when Shiage decides to leave ITEM and take Takitsubo with him, her response to that is to try and murder him too.]]
* DoNotGoGentle: [[spoiler: When she teams with Accelerator against Kakine in NT Vol. 6, she says that maybe Kakine is right that she and Accelerator cannot be redeemed and will still go to Hell no matter what they do. Even so, they shouldn't just give up and die, they might as well kick some ass before they go.]]
* DontYouDarePityMe: [[spoiler:When she succumbs to the Body Crystal's side effects before she can kill Hamazura, she starts screaming at him for giving a pitiful look.]]
* EffortlessAmazonianLift: Despite being a skinny teenage girl, she can NeckLift grown men and throw them across the room.
* EnergyWeapon: Her entire method of attack revolves around these, hence the name "Meltdowner". By manipulating the state of electrons she's able to generate incredibly powerful and destructive laser beams. Among the other things she has been shown to be capable of doing with creative applications of her powers are:
** BeamSpam: Carries special silicon cards to facilitate this effect.
** ConvectionSchmonvection: Averted. Her beams are incredibly hot, and being near them can fry you.
** MundaneUtility: She can make a ball of energy to light her path.
** RecoilBoost: She can cushion her fall or launch herself through the air by firing downwards.
** SphereOfDestruction: [[spoiler:Surrounds herself with one in a last-ditch effort to finally defeat Shiage. He stalls until her energy runs out.]]
** StuffBlowingUp: The end result of her power.
* EvenEvilHasStandards: [[spoiler:She is sickened and horrified when she sees Fraulein Kreutune apparently eating someone, and remarks that she would have had the same reaction even if she were her old, evil self.]]
* EvilCannotComprehendGood: In Volume 22, she says it doesn't make any sense when [[spoiler:Shiage spares her life after defeating her for the third time. Shiage says that even after everything she's done to him and Takitsubo, he still cares about her. She calls him an idiot, but agrees to come with him.]]
* EvilCounterpart: [[spoiler:Her power shares the same general domain as Mikoto's (the fight between them shows them sensing each other's ability), and she's implied to be a backup plan if Mikoto turns out unviable, just like Kakine being Accelerator's backup plan.]]
* EvilLaugh: "Gya-ha-ha!!"
* EyeScream: [[spoiler:Hamazura rams the edge of Takitsubo's body crystal case into her eye so hard he ruptures it.]]
* FatalFlaw: She has a dual one in [[SevenDeadlySins Wrath]] and {{Pride}}. Her pride leads her to take risks she doesn't need to, and having her pride hurt causes her to descend into rage that clouds her judgement and leaves her vulnerable to being blindsided. It's because of both of these that [[spoiler:Mikoto survived their battle during the Sisters Arc, as well as what leads to ITEM's downfall and her death/defeat by Shiage during the Battle Royale Arc since she couldn't just KnowWhenToFoldEm.]]
* FauxAffablyEvil: She's warm and friendly, but it's mostly an act. She's completely okay with murdering her "friends" if they get in her way. In NT, she makes a sort-of HeelFaceTurn and is still basically a crazy murderer, but values her friends more.
* {{Foil}}: She specializes in destruction while Kakine specializes in creation. Pointed out in NT Vol 6.
* GlowingEyesOfDoom: [[spoiler:Her right eye, after she loses it in Volume 15 and before she gets an artificial one in ''New Testament''.]]
* HairTriggerTemper: It doesn't take much to piss her off.
* HeelFaceTurn: Towards the end of volume 22, when she agrees to help reform ITEM. An assassin thinks this has made her soft. She corrects him quite thoroughly after he steps on one of her berserk buttons. He'll live, though, since Academy City has very good medicine.
* HeroicRROD: [[spoiler:Eventually, she pushes herself so far trying to kill Hamazura that she needs to start taking [[AmplifierArtifact Body Crystals]] just to keep up with the stress and damage her body's maintained. Finally, right when she's going for a sure-fire kill, her body just crashes on her and her beams disperse, leaving her barely able to ''move'', much less use her ability.]]
* HeIsNotMyBoyfriend: Gets very embarrassed and loses her temper when [[spoiler:Cendrillon]] teases her about her feelings for [[spoiler:Shiage.]]
* HoistByTheirOwnPetard: [[spoiler:What ultimately defeats Shizuri in her first battle against Shiage is her own power '''''blowing her left arm off'''''.]]
* ImplacableWoman. Seems to be the Level 5 most fond of this, especially during her first fight with Shiage. [[spoiler:This backfires when Shiage proves she's NotSoInvincibleAfterAll.]]
* ItsPersonal: In NT Vol 6, The reason why she decides to help Accelerator fight Kakine.
-->And it isn't like I don't have my own reasons to be here. I was attacked by a false Frenda last night. You were the biggest factor of the darkness active at that time and the interest in playing with the dead was the same. I don't know what your purpose in that was, but I'm going to make you pay for disturbing her grave, you piece of shit.
* IWasJustPassingThrough: In the final episode of ''Railgun S'', she saves Mikoto from STUDY's robots. She had no idea Mikoto was there. She was just pissed at STUDY using her as a lab rat.
* KnowWhenToFoldEm: She might be technically more powerful than Mikoto and therefore want to kill her and take her place, but she's not stupid enough to actually think she can beat Kakine, who is on par with Accelerator. Later subverted when she decides she wants payback, to the point of endangering Takitsubo's life to track down SCHOOL, even though she can't come up with a good response when Shiage points out that she ran away from Kakine twice.
* LackOfEmpathy: Cheerfully greets the family of those she has murdered by introducing herself as the murderer. The weird thing is ''she actually meant well.'' That's as good as she gets when it comes to attempting to take responsibility for her actions.
* LadySwearsALot: Her mouth is '''NOT''' as beautiful as the rest of her face.
* LaserGuidedTykebomb: Over the course of numerous fights with Shiage, he comes to the realization that Mugino used to be a mostly normal girl who actually cared about her friends. Academy City just decided she's much more useful as their own personal assassin/enforcer.
* LockedOutOfTheLoop: Does not know about the Magic side.
* LoveRedeems: Played with. Her yandere fixation on Shiage makes her even more dangerous at first, but after he reaches out to her and tries to make amends she reforms at least enough to avoid disappointing him.
* MadeOfIron: Her pain threshold is staggering. When fighting Mikoto in ''Railgun'' she is only knocked out briefly by a heavy metal doll ramming her head at high speed and actually uses her beams as recoil to survive a fatal fall, wanting to continue the fight despite her obvious heavy injuries. When fighting Hamazura in Volume 15, she endures her [[spoiler:[[EyeScream eye being ruptured]], accidentally blowing off her own arm]], and multiple gunshots to her upper body while consumed in rage, only going down with a punch to the face to knock her out.
* MafiaPrincess: The ITEM spinoff reveals that she's essentially a criminal {{Ojou}}. The Mugino family is among the five wealthiest in the world, making their fortune in wheat on the surface, but also as TheSyndicate. Unlike many, she wasn't forced to join the dark side, but was born into it.
* MinorInjuryOverreaction: Once went completely berserk after Mikoto gave her a small cut on her temple while battling her.
* ModestyShorts: She only wears these occasionally.
* MsFanservice: In [=NT2=] she says that she's the level 5 in charge of sex appeal so she wears ''see through'' underwear.
* MoralityChain: She acts like a good guy around Hamazura and isn't ''quite'' as sadistic and murderous even when he isn't around after her HeelFaceTurn, but it's mostly just because she doesn't want him to hate her.
* MoralityPet: She's grown protective of Fremea after killing her older sister.
* MurderTheHypotenuse: [[spoiler:While trying to get revenge on Shiage, she tried to kill his girlfriend, because Mugino hates and loves Shiage at the same time. After her HeelFaceTurn, she seems to have accepted being #2 in Shiage's harem.]]
* MyGodWhatHaveIDone: Despite her merciless personality and initial NeverMyFault attitude, [[spoiler:she still feels remorse for killing Frenda and even visits her grave.]]
* NamesToRunAwayFromReallyFast: She's a Level 5 esper with an ability dubbed "Meltdowner"...
* NeverMyFault: [[spoiler:While suffering from the Body Crystal's aftermath, she screams at Hamazura that he's responsible for her life going haywire. Her team falling apart is largely her own fault for outright killing Frenda (for selling out their location to SCHOOL) and hunting down Hamazura for the Body Crystal to make Takitsubo's searching ability go into overdrive with no regard for what happen to her body afterwards.]]
* NominalHero: She is, in theory, an ally in the NT volumes, but she's apathetic, cruel and totally okay with being a brutal killer so long as Hamazura doesn't know about it. She figures that even if he does, he'll forgive her, but does her best not to test that.
* NotQuiteDead: [[spoiler:Volume 19 reveals that she survived her battle with Shiage Hamazura in Volume 15, and she's become ''even more'' psycho and unstable than before, with an obsessive crush on him.]]
* OhCrap: [[spoiler:In New Testament 5, when Frenda seemingly comes back to life and says she wants revenge for Mugino killing her back in Volume 15.]]
* TheOnlyOneAllowedToDefeatYou: Towards Mikoto and later [[spoiler:Shiage.]]
-->'''Mugino:''' Don't let pitiful bastards like that take your life. The one who's going to rip you to pieces is me!!
* ThePerfectionist: She always has to be the best and do things perfectly, but when it's clearly impossible she instantly changes her goals to something else to hold up her pride.
* PersonalityPowers: Her power produces heat and explosions, and she has a very explosive temper.
* PowerIncontinence: [[spoiler:Her inability to control her own power is what led to her losing her left arm. If she had better control, she'd be the ranked as the third Level 5 instead of the fourth.]]
* ThePowerOfLove: [[spoiler:In NT Vol 6, she declares that she's now running on her love for Shiage instead of her anger and pride, and that she's now stronger than ever.]]
* TheReasonYouSuckSpeech: [[spoiler:Gives one to Kakine while pointing out his FatalFlaw.]]
* SanityHasAdvantages: If she wasn't so insane, she would have [[spoiler:crushed Shiage easily without him being able to do the slightest thing about it, never have ended up fighting him, or even never have made an enemy of him in the first place]].
* SayMyName: Once she becomes obsessed with Hamazura, she starts to shout his name in a threatening PunctuatedForEmphasis manner ("'''Ha.ma.zu.ra!'''").
* ShockAndAwe: Has a very limited control over electricity due to how her power affects electrons, to the extent that she can make Mikoto's electric attacks turn away from her.
* ShutUpHannibal: In New Testament Volume 6 when an enemy assumed that [[spoiler: her love for Shiage and her guilt over killing Frenda would weaken her. Bonus points for her admitting without shame that she loves him.]]
-->'''Mugino:''' As long as I have Hamazura, this is fine. I'll get into trouble and into fights. There will even be deadly fights. But it will all work out in the end. No matter how many people I kill and how much I destroy, everything will be resolved in the end somehow and we can all be happy. All my past experiences have shown that to be true. That's how it was during the fight between ITEM and SCHOOL. That's how it was when we fought underground in District 23. That's how it was when we met during the fierce fighting of World War 3. And so I know it will be fine as long as I have Hamazura. No matter what happens, he will forgive me in the end.
* SlasherSmile: Though she is quite fond of [[KubrickStare Kubrick Stares]], [[PsychoticSmirk Psychotic Smirks]], and combinations of the three where applicable.
* TheSocialDarwinist: Played straight until Volume 22, where she subverts this by lashing out at Academy City's "Parameter List", [[spoiler:a cost-control mechanism that restricts funds to unworthy (read: Level 0) students (read: Hamazura) and allocates those funds to more powerful and promising espers.]]
* SoreLoser: [[spoiler:Being defeated by Shiage soured her immensely, especially since she's a level 5 while he's a level 0.]]
* StrongerThanTheyLook: Strong enough to incapacitate her foes with a single kick, knock out a tiger in one punch, and ragdoll grown men around with little effort despite being just a slim teenaged girl.
* SuperReflexes: She's fast enough to escape a bomb going off in her face, and to move away when somebody aims a gun at her.
* UnskilledButStrong: She's actually better than the #3 Level 5 Misaka in regards to raw firepower, but the latter's abilities provide a wide array of applications while she just has a straightforward laser generator that can ([[AnArmAndALeg and does]]) harm her if she isn't careful.
* VillainBall: It's frequently noted by the novels and [[spoiler:Shiage]] himself that she could easily kill him with one shot of her high-speed, high-power lasers, yet chooses to drag out his suffering for as long as possible, eventually giving him a window to turn the tables on her. [[spoiler:This ends up screwing her over in their last battle, as by that point she could easily destroy him, but she's so far gone mentally and determined to drag it out that she starts firing off beams haphazardly and when she goes for the sure-fire kill, [[HeroicRROD her body gives out on her]].]]
* WeHaveReserves: [[spoiler:How she makes an enemy of Shiage, coupled with the fact that her "expendable" henchman had just tried a YouShallNotPass for his sake.]]
* WhatTheHellHero: Delivers one to [[spoiler:Accelerator, saying that his DeathSeeker attitude when it comes to atoning for his sins is just him taking the coward's way out. He takes it to heart, now determined to live to continue protecting his loved ones.]]
* WhenAllYouHaveIsAHammer: Mikoto makes very good use of the many possible applications of magnetism and electricity. Mugino doesn't. All she has is beams. You'd be surprised how many problems a portable laser cannon can solve.
* WillfullyWeak: In terms of direct attacks, she's actually quite a bit more powerful than Mikoto. However, she lacks immunity to her own power and can't handle the recoil from the full use of her ability. If she truly went all-out with an attack, the recoil would kill her.
* {{Yandere}}: [[spoiler:Towards Shiage, after he defeats her the first time. It turns into genuine affection (not that she would ever admit it to his face) once she undergoes a HeelFaceTurn.]]
* YouHaveGotToBeKiddingMe: When she learns about the Level 6 Shift project, she laughs and says it has to be one of the most ridiculous things she has ever heard.

[[caption-width-right:163:[[labelnote:Click here for his new look in NT Vol. 6]]https://static.tvtropes.org/pmwiki/pub/images/nt_index_v06_006_008.jpg[[/labelnote]]]]


->'''Voiced by:''' Creator/MasayaMatsukaze (Japanese), Creator/DamanMills (English)

Academy City's second most powerful Level 5 esper, and the leader of SCHOOL. His ability, Dark Matter, allows him to create entirely new forms of matter that aren't bound by the laws of physics. Kakine's power is hinted to be related to Accelerator's in some way, and he is the only other esper with the potential to become a Level 6. He has [[UnknownRival a rather one-sided rivalry]] with Accelerator, with his fondest wish being to defeat him.

* AbsurdlySharpBlade: The tips of the wings.
* AttackReflector: His Dark Matter can be made to even reflect attacks ''Accelerator'' throws at him.
* AffablyEvil: Provided you don't directly oppose or hinder his objectives, he's actually a half-decent guy.
* AlwaysSomeoneBetter: Despite his immense power, Accelerator is number 1 and he's number 2. [[spoiler:This gets rammed home when they both "Awaken" during their first battle, yet Kakine still loses despite fully mastering his power and Accelerator being reduced to an unthinking UnstoppableRage]].
* AndIMustScream: [[spoiler:His brain is preserved and forced to create a constant stream of Dark Matter after his "death" by Accelerator. Happens again in New Testament 8 when he his compressed into a ball, and noted to still be alive in this state. He was later left to sink into the ocean with the Sargasso base.]]
* ArcVillain: For the Battle Royale Arc overall, a position he technically shares with Saku Tatsuhiko (Tatsuhiko is attempting a full-on rebellion to take over Academy City, while Kakine is the most powerful villainous threat whose own goals are mutually exclusive but more personal towards the other members of the cast).
* ArrogantKungFuGuy: He's incredibly confident in his own power, looks down on everyone else, and hates the fact that Accelerator is stronger than him.
* AssholeVictim: [[spoiler:He deserved everything Accelerator did to him.]]
* AwesomenessByAnalysis: He can read past events in a given location by examining the impressions left in the surrounding area. He compares this to how a CD stores sound and images by having tracks etched in it. [[spoiler:This was how he was able to imitate the Misaka Sisters for his ShapeShifterGuiltTrip.]]
* BadassBoast: Delivers a lot.
-->'''Kakine''': Are you making fun of me? Cause it sounds to me like you want to become a nice corpse.
-->'''Kakine''': This is a difference in the freedom our powers give us. And that difference is insurmountable for you. I need not even do anything. I do not simply have an infinite supply of Dark Matter. My inspiration also knows no bounds. No matter how many cards you gather in your hand, I can push it back with brute force as numbers means nothing to me. Nothing you do will ever even reach me. To reach me, you first need to climb over the wall of infinity that continues on eternally.
-->'''Kakine''': I don't care who you are. It doesn't matter what you've built up. I'm not interested in what you'll give to the world. Good and evil? Kindness and malice? Gain and loss? Positive and negative? We can let historians decide that a hundred years from now. All I know is what fate you deserve for trying to use me as a tool!!
* BerserkButton:
** When he's told his ability -- more specifically, his white wings -- would have appeal to kids for a demonstration during the Daihaseisai, he wrecks SCHOOL's hideout. Considering his one-sided rivalry with Accelerator, being told you have appeal to kids is the ego equivalent of a kick to the balls. [[spoiler:Toaru Kagaku no Dark Matter manga later reveals that this is actually a fresh wound - Ringo Yuzuriha, young girl whom Teitoku recently failed to save, absolutely adored his wings, and this argument reminded him about her death. Ringo's death also reminded Kakine of the death of his childhood friend several years prior, who also similarly adored his wings]]. In general, comments about his wings is a touchy subject, though he later on brushes off Accelerator insulting his wings twice.
** Kakine is absolutely furious when Accelerator actually [[spoiler: shows him mercy after defeating him thanks to Yomikawa.]] He's unable to understand how someone like Accelerator was able to escape the Dark Side and goes into a hate filled rant while [[spoiler:torturing Yomikawa]] intent on taking everything important away from Accelerator.
* BeTheBall: [[spoiler:Othinus crushes him into a ball.]]
* BigCreepyCrawlies: [[spoiler:Post-ressurection]], he seems to have taken an interest in creating an army of car-sized bugs.
* BlackEyesOfCrazy: [[spoiler:After his resurrection.]]
* BrainInAJar: [[spoiler:After his "dismemberment" by Accelerator, both his brain and body are preserved and stored separately. He eventually made a new body out of Dark Matter and was released. His original flesh and blood body was captured by GREMLIN at the end of NT Vol. 6. They use a device to force it to create Dark Matter that they can mold into the sacred spear Gungnir.]]
* BrilliantButLazy: One may even say "Brilliant AND Lazy" in Volume 6 after his [[spoiler: resurrection.]] Both he and Accelerator spend most of the volume trying to read each other's moves and plan accordingly. Kakine even goes as far as to choose specific locations and screws with Accelerator's mental state, forcing his Reflection to become useless. However, once he directly faces off against Accelerator and Mugino, Kakine's regeneration and infinite Dark Matter essentially allows him to take everything the two Level 5's have and regenerate from it. The novel makes the point that Accelerator, [[spoiler:even with his Black Wings]] and Mugino simply do not have the power and/or energy to fully destroy him and that Kakine can basically be lazy and outlast them until they either make a mistake and/or run out of energy.
* CameBackStrong: [[spoiler:Zig-Zagged example. He took a final level in badass during the last leg of the fight with Accelerator, but it did nothing to save him from his now-berserk opponent tearing him apart. After reviving in New Testament, however, his time as a BrainInAJar and ''mastering'' that newly awakened power to re-create his body allows him to overpower Accelerator and Mugino working together thanks figuring out how to [[SendInTheClones clone himself]] and regenerate constantly. In the end, he only loses again due to quite-literal internal sabotage]].
* CombatPragmatist: Intended to take Last Order hostage as "insurance" against Accelerator, though the latter intercepted him as he was interrogating Uiharu for Last Order's whereabouts, admitting that a fair fight with Accelerator was troublesome (though he still proceeded to fight Accelerator head on). It's revealed in Toaru Kagaku no Dark Matter that [[spoiler: Kakine spent a month gathering and analyzing data on Accelerator's calculation patterns in preparation for their eventual fight]]. In New Testament 6, Dark Matter Kakine's strategy was to [[spoiler: stall Accelerator via ZergRush and his new immortality until his battery ran out before finishing him off]].
* ComboPlatterPowers: His ability, Dark Matter, allows him to create and control matter that ''does not exist in this universe'' and ''defies the laws of physics'' of everything it makes contact with, allowing him to give various new properties to normal matter.
* CurbStompBattle: He spent Volume 15 [[OneHitKill one-shotting]] everyone he went up against without getting a scratch, [[spoiler:until he went up against Accelerator.]]
* DeathOfPersonality: [[spoiler:Beetle 05 basically erased him and took his place. He later comes back in his old flesh and blood body, only to be stopped by Othinus.]]
* {{Determinator}}: Even being [[spoiler:impaled with his own wings by Accelerator is only enough to incapacitate him for a few minutes.]]
* EquivalentExchange: Completely {{averted}} like a great big middle finger to physics. Dark Matter is explicitly a form of matter that doesn't exist in this universe outside of what Kakine makes with his ability, and the only limit on how much he can make or even what properties it has at any time seems to be his own stamina and imagination.
* EvilCounterpart: He's Accelerator with less [[EvenEvilHasStandards standards]].
* EvilSoundsRaspy: In Japanese, he has a raspy, soft and malicious tone.
* FatalFlaw: [[spoiler:In NT Vol 6, Mugino points out that, despite his immense power, he always loses in the end because he overestimates himself and doesn't know how to quit while he is ahead.]]
* FightingAShadow: [[spoiler:If his body is destroyed, he will recreate himself using Dark Matter and return to create even more of it. It's also noted that even the Kakine that Accelerator and Mugino fight in Volume 6 is merely just a portion of the entire system that makes up Kakine Teitoku as a whole. Near the end of New Testament it's revealed that both the 'Kakine' that appeared in New Testament 5 and 6 and Beetle 05 were actually the [[AnthropomorphicPersonification Dark Matter ability itself becoming sentient, with parts of the original Kakine's personality imprinted on them]], being directly compared to the Emanation of Touma.]]
* {{Foil}}: To Accelerator. Where Accelerator excels at destruction, Kakine's entire ability revolves around creation. This is actually lampshaded in NT Volume 5. In NT Volume 6, he is compared to Mugino the same way.
* FriendToAllChildren: [[spoiler:After the protective side of him takes over (with Takitsubo's help) in New Testament 6 a rumor spreads which says that any child who is in trouble just needs to call for him and he will show up.]]
* FromASingleCell: [[spoiler:He can recreate his body as long as there is even the tiniest particle of Dark Matter]].
* GreenEyedMonster: [[spoiler:It eventually leads to his downfall.]]
* HeelFaceTurn: [[spoiler:After Beetle 05 [[SplitPersonalityTakeover takes control]] of him.]]
* HeroicSelfDeprecation: A villainous example. He openly refers to himself as a scumbag and a mongrel twice in Volume 15. He also believes he is unable to protect anyone.
-->'''Kakine''': In the end, you're the same as me, unable to protect anyone. And after this, many more will die, killed by a mongrel like me.
* HoistByHisOwnPetard:
** In Volume 15, [[spoiler:Accelerator uses his own Dark Matter against him to finish him off, having learned how to redirect it even before Awakening.]]
** In NT Vol 6, [[spoiler:he spreads his consciousness too thin, allowing one of the rhinoceros beetles he created to develop free will and then take him over.]]
* HumanoidAbomination: [[spoiler:After his resurrection.]]
* ImaginationBasedSuperpower: Since Kakine can give just about any properties he wants, he can merge his Dark Matter with mundane objects (such as air) to create all sorts of effects, including AttackReflector, {{Intangibility}}, brainwashing, [[LightEmUp firing radiation]], NighInvulnerability and {{Flight}}.
* ImmortalLifeIsCheap: [[spoiler:Gets his body repeatedly destroyed by Mugino and Accelerator during their fight, and it doesn't hinder him in the least]].
* JackBauerInterrogationTechnique: When [[spoiler:Uiharu]] wouldn't tell him the location of [[spoiler:Last Order]], he tries to get the information out of her by ''stomping on her shoulder, dislocating it, and continuing to put pressure on it''. In the anime, this is also how he [[spoiler:'persuades' Frenda to reveal the location of ITEM's hideout.]]
* {{Jerkass}}: Even worse than Accelerator.
* LackOfEmpathy: Just as much as, if not more than, Accelerator.
* LightIsNotGood: Despite his angelic appearance and using weaponized light as his main attack, Kakine isn't a very nice person.
* MeaningfulName: His name can roughly be translated as "Emperor of the Front Fence."
* NotSoDifferentRemark: [[spoiler:At least that's what he ''thought'', and before Accelerator met Touma and Last Order, he might have even been right.]] Volume 15 heavily implies that much like Accelerator, Kakine too went through something difficult that turned him into the bitter person he is today. His own spinoff manga finally sheds light on it and reveals [[spoiler:Kakine is effectively an Accelerator that failed to save the people he cared about.]]
* NotWorthKilling: He has absolutely no compassion or remorse, but he will sometimes leave his opponents alive if they are completely helpless or already dying, just because he thinks it would be beneath him to waste energy on them. [[spoiler:Such is the case when he realizes Takitsubo is dying from Body Crystal overuse and Shiage can't do anything to hurt him, so he just leaves the ITEM base despite his original goal being to kill Takitsubo due to her AIM Stalker ability.]]
* ObviouslyEvil: He wears a dark maroon suit and most of the time has an evil grin on his face, so it makes you clear that he isn't a nice guy at all even if he's pretending to be.
* TheOnlyOneAllowedToDefeatYou: Toward Accelerator.
* OurAngelsAreDifferent: [[spoiler:He's the only other Esper aside from Accelerator who has the potential to "Awaken" and reach Level 6 naturally, while [[ShockAndAwe Mikoto]] only did so through outside means. Despite this, his "complete" Awakening still loses to Accelerator's uncontrolled one]].
* OurDarkMatterIsMysterious: His "Dark Matter" isn't really what science knows as [[https://en.wikipedia.org/wiki/Dark_matter dark matter]] (which theoretically should exist). He defines it as matter that just plain doesn't exist outside of his power (The correct scientific term for it would be [[https://en.wikipedia.org/wiki/Exotic_matter Exotic matter]]).
-->'''Kakine''': The Dark Matter that I produce is a substance that does not exist in this world. I don't mean it hasn't been discovered, but that it should ''theoretically'' exist; I mean, it actually does not exist. Matter that doesn't exist operates under laws which don't exist. Like say, turning the light from the sun into rays that can kill a man.
* PersonOfMassDestruction: If not for [[spoiler:Othinus' intervention, he likely would have destroyed the entire island-sized Sargasso along with the remaining GREMLIN members in a fit of rage.]]
* PetTheDog: [[spoiler:His interactions with Ringo Yuzuriha in ''Toaru Kagaku no Dark Matter''.]]
* PitifulWorms: Uses this line on Accelerator at one point.
-->'''Kakine''': Be crushed by the symbol of your own sins and die, you worm.
* PhlebotinumHandlingEquipment[=/=]TrickedOutGloves: Wields the Pincet Glove aka Tweezers, which allow the wearer to pick up and manipulate microscopic things like nanobots. The Pincet Glove used to be a very bulky and impractical device, but Kakine modified it to comfortably fit on his hand.
* PowerGivesYouWings: He prefers to manifest his Dark Matter as six white angel-like wings coming out of his back, which Accelerator mocks by calling him a "fairy." [[spoiler:When he "awakens", the wings' composition changes slightly, though it's not seen exactly what effects they would have because he gets trashed by Accelerator shortly afterwards.]]
* ThePowerOfCreation: Once again, his esper ability lets him create material that can not only defy the laws of the universe, but also give it specific or even mutually-conflicting properties to make whatever he wants out of it.
* {{Protectorate}}: [[spoiler:Beetle 05 has vowed to protect Fremea Seivelun.]]
* PunchClockVillain: When he's not hired for something, he's somewhat normal.
* TheResenter: Toward Accelerator.
* RedemptionDemotion: [[spoiler:After the SplitPersonalityTakeover, he does not actively use SelfDuplication to prevent his previous personality from taking over.]]
* ReducedToDust: How he [[spoiler:kills Souji Kihara in the ''Toaru Kagaku no Dark Matter'' manga.]]
* SatelliteCharacter: His entire character is defined by his relationship with, and inferiority to, Accelerator.
* SelfDuplication: [[spoiler:When he succeeded in recreating his body, nothing prevented him from using this power to create a never-ending army of his copies to [[ZergRush overrun Accelerator with numbers]]]].
* ShapeShifterGuiltTrip: [[spoiler:In NT Vol 6, after Accelerator effortlessly destroys his army of copies, he then makes an army of copies that look, sound, and act like the Misaka Sisters. Accelerator falls into despair, unable to harm them, and is almost killed until Mugino steps in and reminds him that they ''aren't'' actually the Misaka Sisters, just extensions of Kakine. This restores Accelerator's will to fight.]]
* SplitPersonalityTakeover: [[spoiler:In NT Vol 6, one of the rhinoceros beetles he created, Beetle 05, develops free will. Not wanting to harm anyone, it gains the strength to take control over all of Kakine's creations. It disintegrates them, then transforms into Kakine and declares he is now him. Accelerator and Mugino muse that this beetle must have held the part of Kakine's personality that actually cared about others, buried deep down.]]
* SuperpowerLottery: Being able to create a form of matter that does not exist in our universe and can give new properties to mundane things and lets you [[spoiler:create human flesh]] certainly counts. His Dark Matter is one of the few things that can actually break through Accelerator's reflection and in NT Volume 6, it is heavily implied that with time, he could even create and implement entire Personal Realities. Indeed in Volume 8, he ends up [[spoiler:producing a holistic Esper.]]
* VoluntaryShapeshifting: He is said to inherit Byouri's ability to change into several forms based on cryptids. He doesn't use it until [[spoiler:his resurrection]], though.
* {{Unobtanium}}: [[spoiler:After becoming a BrainInAJar, the Dark Matter it continuously produces was used as the basis for [[FacelessGoons combat masks equipped on certain Academy City soldiers]] to create EliteMooks.]]
* UngratefulBastard: [[spoiler:Stabs Yomikawa just after she saves his life from Accelerator.]]
* UnknownRival: Accelerator didn't really care about him until he made it personal by [[spoiler: hurting Yomikawa.]]
* UnwittingPawn: [[spoiler:His hatred and envy of Accelerator was nurtured and encouraged by Crowley. He was also intended to act as a spare part in Crowley's plan, in case Accelerator failed to live up to his expectations.]]
* VillainBall: [[spoiler:Stabbing Yomikawa just to piss off Accelerator.]]
* TheWorfEffect: [[spoiler:As soon as the original Kakine comes back to life, Othinus crushes him.]]
* WouldHitAGirl: Let's see: He fights with and defeats [[spoiler:Mugino]], beats the shit out of [[spoiler:Frenda (only in the anime)]] to get the information he wants, attacks both [[spoiler:Saiai]] and [[spoiler:Takitsubo]] and leaves them for dead, nearly kills [[spoiler:Uiharu]], wanted to use the innocent and adorable [[spoiler:Last Order]] as bait so he could [[spoiler:have a glorified pissing match with Accelerator]], and then stabs [[spoiler:Yomikawa]] after she [[spoiler:[[UngratefulBastard saves his ass from Accelerator]].]]
* ZergRush: His strategy to fight Accelerator in New Testament Volume 6, sending his never-ending army of copies against him.

* SpellMyNameWithAnS: His name is officially Hama''d''ura, but is pronounced Hama''z''ura.

** Biohacker shows two other instances of this fault. She tries to make herself seem like a crazed criminal to stop [[spoiler: Touma punching out Amazora]], but [[HeroicWillpower he ignores it.]] When negotiating with them, [[spoiler: Seria Kumokawa]] challenges her by saying that she doesn't care what distance she sets their hearts to, it won't change the information she's giving across.

** In Biohacker, [[spoiler: she and her sisters team switch sides to help Touma and Seria after the latter convinces them by pointing out Ryuuskei left them out to dry once Anti-Skill captured them.]]

* SwissArmySuperpower: While lacking in direct offensive power, Kaibi has learned how to make the most out of her ability. She herself notes it's like having [[TakeAThirdOption a secret fourth option in Rock-Paper-Scissors]]
** Measure Heart is excellent for espionage and interrogation, by making targets think that she's supposed to be there or that they should trust her respectively.
** By making herself seem dangerous to a foe, like that of a serial killer, she can knock them off guard allowing a teammate to finish them off (if they fall for it, anyway). Likewise, by making herself seem defenseless to a teammate, like a CuteKitten in the rain, she can avoid friendly fire without giving up her position.

* CharmPerson: This is basically her power. Measure Heart allows her to manipulate the emotional distance between her and her targets, allowing her to dictate how her targets feel about her.

* SwissArmySuperpower: While lacking in direct offensive power, Kaibi has learned how to make the most out of her ability. She herself notes it's like having [[TakeAThirdOption a fourth option in Rock-Paper-Scissors]
** Measure Heart is excellent for espionage and interrogation, by making targets think that she's supposed to be there, or that they should trust her respectively.
** By making herself seem dangerous to a foe, like that of a serial killer, she can knock them off guard allowing a teammate to finish them off (if they fall for it, anyway). Likewise, she can make herself seem defenseless to a teammate, like a CuteKitten in the rain, she can avoid friendly fire without giving up her position.
** Unlike other telepathic abilities, Measure Heart allows Kaibi to 'sense' targets in range. This means she has a in-built (though inaccurate) radar.
** Her ability also makes her immune to other mental abilities.

!!!Girl in the dress
!!!Measure Heart

A member of SCHOOL, and the only one to survive intact after the events of the Battle Royale arc. Her ability is "Measure Heart", the ability to regulate the distance between peoples' minds (hearts).

[[quoteright:180:https://static.tvtropes.org/pmwiki/pub/images/tsuchimikado_motoharu.png]]

[[quoteright:250:https://static.tvtropes.org/pmwiki/pub/images/musujime_awaki.png]]

[[quoteright:200:https://static.tvtropes.org/pmwiki/pub/images/unabara_mitsuki.png]]
[[caption-width-right:262:[[labelnote:Click here to see his real appearance]]https://static.tvtropes.org/pmwiki/pub/images/etzali.png[[/labelnote]]]]

[[quoteright:150:https://static.tvtropes.org/pmwiki/pub/images/kakine_teitoku.png]]
[[caption-width-right:310:[[labelnote:Click here for his new look in NT Vol. 6]]https://static.tvtropes.org/pmwiki/pub/images/nt_index_v06_006_008.jpg[[/labelnote]]]]

[[quoteright:200:https://static.tvtropes.org/pmwiki/pub/images/heart_measure.png]]

* TeamNormal: Before Shiage join the team, Frenda was the only member of ITEM to ''not'' have esper abilities.

* {{Fetish}}: Has one for [[PlayboyBunny bunny girls]], shown when he forwards a porn video to his [[spoiler:ITEM]] teammates. It becomes his staple for the following volumes. He's so much into it that just having Saiai stick a bunny behind Rikou (thus making it look like she is wearing bunny-ears) is enough to give him a nosebleed.

* MsFanservice: Everytime she appears. Her first appearance in ''Manga/ACertainScientificRailgun'' has her wearing a NaugthyNurse costume seemingly because she can. In ''Manga/ACertainScientificMentalOut'', she spends several chapters wearing a skintight SpyCatsuit, which she doesn't bother to fully zip up. And in ''A Certain Dark Side Item'', she uses [[MundaneUtility her power]] to make herself [[HotAsHell devil horns, wings, and tail]]. WordOfGod from the editor of ''Railgun'' is that {{Cosplay}} is her hobby. She also leaves her shirt unbuttoned in her regular clothes and school uniform, and it doesn't look like she's wearing a bra.

* MsFanservice: She gets the treatment in the spin off manga Manga/ACertainScientificMentalOut. She spends several chapters wearing a skintight SpyCatsuit, which she doesn't bother to fully zip up. During this time she often posed in a provocative manner, or atleast had the "camera" [[MaleGaze focused on her assets]]. She also leaves her shirt unbuttoned in her regular clothes, but its not focused on in the same way. In both cases, it doesn't look like she's wearing a bra.

* MsFanservice: She gets the treatment in the spin off manga "A Certain Scientific Mental Out". She spends several chapters wearing a skintight SpyCatsuit, which she doesn't bother to fully zip up. During this time she often posed in a provocative manner, or atleast had the "camera" [[MaleGaze focused on her assets]]. She also leaves her shirt unbuttoned in her regular clothes, but its not focused on in the same way. In both cases, it doesn't look like she's wearing a bra.

* CoolGuns: Like most [=DA=] operators, he uses a Heckler & Koch [=G36C=].

* UndyingLoyalty: To Yakumi, to the point of [[spoiler:willing to try and die for her. Sadly, Yakumi doesn't reciprocate such loyalty.]]

* AlwaysSecondBest: Part of her resentment for Misaki is that Ayu feels she simply an ''inferior'' version of Misaki and that people will always compare her to Misaki, seeing her as nothing more than a cheap knockoff of '''Mental Out'''. what she doesn't know is that she and Misaki actually possesses near-identical potentials, Ayu's simply not as powerful as Misaki due to the fact that [[spoiler: the researchers were sabotaging her development in order to keep her at a certain level, in case they ever needed a replacement for Misaki.]]

* DressingToDie: {{Subverted|trope}}, as she is seen [[spoiler: dead in a preservation tank only in her bra and underwear. This is even {{Lampshaded|trope}} by herself and calls it embarassing.]]
* FaceDeathWithDignity: [[spoiler: Her posthumous video right before she died shows she didn't even care she would pass away and just chuckled at it.]]

* PurposeDrivenImmortality. {{Ziggzagged|trope}}. Although she believes the Level 6 experiment conducted by her brother would have made her become immortal, the effective research of 2 years makes it impossible so she commits suicide and asks that her corpse be used to make her "immortal".