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Academy City Leadership
- 0% Approval Rating: He made an enemy of close to everyone on the Magic Side because he decided to do scientific research instead of magic.
- All-Powerful Bystander: This guy apparently possesses a level of personal power that would let him end 99% of the plots in an instant, but he just stays in his tube and schemes. The only times he's ever come out of it:
- The first time (sort of... he was outside of it and inside of his tube at the same time, somehow) was when Fiamma of the Right was about to escape, at which point he half-kills the guy in a single blow and leaves him for dead. Remember that Fiamma was up until then essentially fighting against the entire world and winning.
- The second time was at the end of the manhunt for Othinus, where he broke through the dimensions ("Phases") to access a hidden world in which live the True GREMLIN, a group of Magic Gods each more powerful than Othinus ever was (for she never even knew of their existence) and from all the world's religions. He confronts them, and they managed to piss him off (or so he let them believe) enough to use his magic name and immediately summon the Blasting Rod. The result of their battle is unknown, only that Aleister came back with a third of his body badly burnt.
- To explain further how he could end his plots by himself, he brought the concept of modern Western magic to its apogee, and, as it is still strongly influenced by him, if he wanted he could use the archetype of Western magic to affect the very foundation of the modern day Magic side. Why he does not simply destroy the Magic side using that is known to him alone.
- The Antichrist: Implied, given his plans and actions and that his sorcery name is Beast666.
- Amplifier Artifact: The Blasting Rod has the ability to amplifies the magic’s power to 10 times what the target thinks it is.
- Ascend to a Higher Plane of Existence: When he scolds Fiamma after his A God Am I plan fails, he outright says he has achieved such a thing — though it isn't far-fetched to say that he hasn't attained the highest position yet. He could have even become a Majin, but he made specific alterations to himself to stop it from happening.
- Assimilation Plot: His vision, as revealed in Volume 6 to some degree, is to set up an Artificial Heaven of AIM fields encompassing the entire world by spreading the MISAKA network worldwide and using the influence of Hyouka Kazakiri on it. Basically, by creating a world covered in AIM, all magic will be destroyed and all humans will have access to esper powers. Whether this is his primary Evil Plan or merely a backup plan of sorts is yet to be seen, as he seems to have several other plans for Academy City. New Testament volume 10 reveals that this is simply one step in a much grander and far-reaching plan, which involves the absolute destruction of all magic and restoring the world to its "pure" state. What he plans on doing once that's accomplished remains something of a mystery.
- Authority Equals Asskicking: Curbstomps Fiamma of the Right.
- Bishōnen: In stark contrast to his real-life counterpart.
- Big Brother Is Watching: His People Jar has access to all the data being processed in Academy City, from security cameras to communications equipment. On top of that, he also has a special network of nano-machines called UNDERLINE spread throughout the city that gets him information that even other security systems don't have access to.
- Broken Bird: Hints himself to be one. When Motoharu warns that Touma will eventually destroy him if he doesn't stop screwing with him, Aleister simply replies that he was destroyed a long time ago.
- A Majin also asks if his plans have to do with the tear stain on the last page of his journal. Immediately after, Aleister loses his cool and attacks. Turns out in a later volume that he was faking it.
- The Chessmaster: Probably the greatest in the series; he does little else.
- Code Name: Beast666
- Deceptive Disciple: Is hinted to be one to Aiwass.
- Didn't See That Coming:
- Crowley's plans are derailed spectacularly when Shiage beats Mugino. Shiage was supposed to die in that confrontation, meaning he’s now an unknown variable.
- He also didn't see the end of New Testament 13 coming. World Rejecter is a total unknown to him, in that he doesn't seem to be even slightly aware of his existence. What impact this will have on his plans is yet unknown, but Laura Stewart thinks everything is about to go pear-shaped for him like never before.
- Disproportionate Retribution: His hunting of Shiage could be interpreted as this. See It's Personal below for the details.
- There Is No Kill Like Overkill: Expends vast resources and hires almost every member of Academy City's Dark Side to kill Shiage in Volume 19. Lampshaded by The Girl In The Dress, who thought Aleister was going overboard.
- Dude Looks Like a Lady: It doesn't help that the production art◊ gives him a bustline. A rather impressive one at that.
- The novels describe him as androgynous, so much so that he cannot be described as conclusively male or female, at least based on his looks.
- Faking the Dead: He faked his death to get the Magic side off his trail before he founded Academy City. Only really high-ranking Magic side characters know that he is still alive.
- Gambit Roulette: Combined with Xantos Gambit and Xantos Speed Chess. Aleister's plan does not require all the various steps to succeed. Or any of the various steps to succeed for that matter. If a part of the plan is a success, excellent. If it fails? Then it is merely a step onto a new path to his eventual victory.
- The Heretic: He was the most famous sorcerer of his time and the unofficial representative to the Magic side. His defection to the Science side was not well-received, since he is the best sorcerer, and by defecting to Science, he unofficially proclaimed the superiority of the Science side. This earned him the hatred of close to everyone on the Magic side.
- Hidden Agenda Villain: We know the parts he requires for his plans and that it would destroy the Magic Side along the way... but we yet don't know what he is truly trying to achieve with science that he couldn't with magic.
- Historical-Domain Character: With a Historical Villain Upgrade, considering that the nickname of The Wickedest Man In The World was said of the real Aleister Crowley.
- I Need You Stronger: Regularly manipulates Touma into dealing with incidents, wanting him to toughen up for some reason.
- It's Personal:
- Aleister, for the first time ever, is livid when Shiage absolutely fucks all his plans up the wazoo with what Aleister considers "dumb luck." Now he won't rest until the guy's dead.
- He also gets a touch of this with the High Priest: when he sends Nouta Kihara to kill the High Priest, the final blow is delivered with a message that amounts to "This is for my daughter, whose name you couldn't even be bothered to know."
- Kill Me Now, or Forever Stay Your Hand: When Heaven Canceler calls him out on his immoral actions one too many times, Aleister dares him to end the whole thing by pressing the kill-switch to the machines keeping him alive. The doctor refuses. Aleister says that was his final chance and disables the kill-switch just in case the doctor changes his mind in the future.
- Mad Scientist/For Magic!: He was said to have sacrificed his wife's life in a magical experiment. His daughter's whereabouts are unknown, although he was said to have used children no older than his daughter for his experiments.
- The Man Behind the Man: To all of Academy City.
- Manipulative Bastard: And what a bastard he is.
- Mysterious Past
- Me's a Crowd: After Lola Stuart takes the Windowless Building over and seemingly kills him, he divides himself into 1,083,092,867 copies of himself, each of them representing one of Aleister's possibilities.
- People Jar: Floats upside down in one.
- Physical God: He defeated Fiamma of the Right before the guy knew what was happening. He also confronted a group of Magic Gods. While he came back with a third of his body badly burnt, he still took on a group of bona fide gods, and came back alive.
- Rapunzel Hair: It goes down to his ankles.
- Reality Warper: He is capable of omnipresence and other tricks. Confirmed when it is revealed at the end of New Testament volume 11 that he possesses something called the Archetype Controller, which can basically create or destroy Jungian archetypes, which would be like the equivalent of controlling tropes, in a way. It is revealed that, using this power, he literally created the entire concept of a "Science side", and made Academy City and its espers part of the archetype of "mankind’s worship of science".
- Simple Staff: The Blasting Rod, said to follow him only out of pure respect. It's also a staff that's capable of overpowering Fiamma's Holy Right. The Blasting Rod was introduced back in Volume 10, when Aleister was pondering whether to take direct action or not.
- Spanner in the Works: Aiwass eventually remarks that, despite constant re-calculations, Crowley's plans are beginning to come apart at the seams thanks to the combination of Touma, Accelerator, and Shiage.
- The Stoic: Usually doesn't show many overt expressions, but...
- Not So Stoic: According to Noukan Kihara, he has as a habit of trying to sound rational when he's handling everything through emotion. There are many examples of this, for example when Aiwass asks if he envies Touma, Accelerator, and Shiage for being heroic, Aleister's voice actually strains. He also tries to threaten Leivinia Birdway when she taunts him over his incapacity to do anything at the time, and goes into a Tranquil Fury when asked if his plans have to do with a tear stain on the last page of his journal by one of the Majin.
- Superpower Lottery: He is one of the most powerful characters yet introduced, with the only characters above him are Aiwass and the Majin members of True GREMLIN, and even then it's only a possibility. However, he really doesn't do much except sit around inside his People Jar, that is, until the volume 22 epilogue, where he curb-stomped Fiamma.
- Übermensch: He is of the Aeon of Horus, one who rejects the old laws and wants to create a new world with new laws. He refers to most of the other characters, mostly the Christians, as being of the Aeon of Osiris, saying they are stuck in the old laws and unable to advance like him.
- Villainous B.S.O.D.: If his calculations get disrupted too much, he won't do anything.
- You Killed My Father: High Priest of True GREMLIN was involved with the death of his daughter. Noukan Kihara passes this message to High Priest before killing him on Aleister's orders.
- Voiced by: Yutaka Nakano (Japanese), Cole Brown (English)
- Almighty Janitor: As a co-founder of Academy City, he may outrank even the Kiharas if he flexed his political muscles. He hasn't seen it fit to do so, preferring to be a perfectly ordinary doctor.
- Awesome Mc Cool Name: Heaven Canceler. It doesn't get much more awesome than that.
- Badass Boast: Not your usual boast, but still pretty badass and fitting for a doctor."Don't die. As long as you don't die, I can save you."
- Captain Ersatz: To Dr. Sado in Space Battleship Yamato, then he got reverse ersatzed in Space Battleship Yamato 2199.
- Catch Phrase: "Who do you think I am?"
- Cool Old Guy
- Dark and Troubled Past: Mentions to Accelerator that he has seen far more blood than Accelerator has. He also, apparently, created Dark Legacy in his younger days, and has a history with Aleister.
- Dirty Old Man: A one-off joke in Aisa's arc, where he thinks Touma keeps going back to the hospital because he has a nurse fetish. When Touma replies that he doesn't, Heaven Canceler muses:“Really? Pity, I thought I found a compatriot.”
- Embarrassing Nickname: Frog-Faced Doctor, though he doesn't know people call him that.
- Ink-Suit Actor: Many people, especially the voice actors and the production crew who worked on the English version of the show, mentions that Cole Brown resembles Heaven Canceller.
- The Medic: It's all he does. The only thing he can't cure is very specific, brain-related injuries, such as Touma's memory loss.
- Mysterious Past: Many, many years before the start of the series, Heaven Canceler was the one who saved Aleister's life while he was both on the verge of death and being hunted relentlessly by pissed off sorcerers, taking refuge in a small European village. While he was treating him, Heaven Canceler inspired and urged Aleister to create Academy City in Japan, saying he would help him in any way. Despite being one of the two de facto creators of Academy City, he decided to remain a doctor as he always has been.
- Nice Guy
- Only Known by Their Nickname: His real name is not yet officially mentioned.
- Spanner in the Works: While the Hound Dogs were near his hospital he jams their communication system, only to talk with a former patient who happens to be one of the Hound Dogs.
- What The Hell, Villain?!: Calls out Crowley on his immoral activities, but takes no action due to his Hippocratic Oath.
The Board of Directors
The mother of Suama Oyafune, one of Touma's teachers. She persuades Touma to intervene in the tensions between Academy City and the Roman Catholic Church, since the Board of Directors refuse to take action.
- Big Good: Tsuchimikado calls her as the number one good person in the Board of Directors. There's another good one, but with Seria Kumokawa directing his actions it's hard to get his support.
- Blackmail: In the 19th novel, it's revealed that Shiokishi has been blackmailing her with threats against her daughter to keep her from interfering in his business.
- Cool Old Lady
- Mad Scientist's Beautiful Daughter: She's not that mad a scientist, but may count by being part of the Board of Directors. Her daughter is Suama Oyafune, a Hot Teacher from Touma's school.
- Manipulative Bitch: Her specialty is using her position as the Board of Directors and using agreements and powers that she was given in order to pull strings.
- Motherly Scientist: One of the people in the board of directors who cares about the students.
- She Knows Too Much: Defied the first time, subverted the second time. She orders Motoharu to shoot her to prevent the Academy City from finding out that she was in contact with Touma. On the second time, SCHOOL is ordered to assassinate her, but the people from ITEM comment that it doesn't matter whether she lives or dies, as she isn't involved in important matters pertaining to the dark side. She recovers from Motoharu's gunshot.
- Token Good Teammate: She's one of two decent people on the board of directors and the other one is much trickier to contact and less likely to give support.
ShiokishiThe man in charge of Academy City's military research.
- Blackmail: He's blackmailing Oyafune to keep her from meddling in his business.
- Powered Armor: Shows up in one the first time he meets with GROUP.
- They Know Too Much: He hunts down everyone trying to uncover DRAGON's identity, including GROUP.
- Things Man Was Not Meant to Know: He calls Aiwass something to this effect, saying that he wishes he never knew of it in the first place.
The man who funds ITEM. It seems that he is involved with Academy City's dark side.
- Bulletproof Vest: Wore one prior to Accelerator paying him a visit with a shotgun blast to his chest. He survived, but got injuries.
- Hoist by His Own Petard: Gets killed by the assassin he hires after she finds out that he funds ITEM, the group which injured her partner.
- Also because while he had arranged for her to receive an Academy City life support system for said partner, he also arranged to have a tiny transmitter implanted into said partner's body that had the capability to shut down at least four of his organs when activated. Fittingly, he is killed by that very transmitter because Stephanie saw through his scheme, removed it and implanted back into him, literally killing Thomas with his own weapon.
- Revenge: He hasn't forgotten that Accelerator shot him in the chest, so he hires an assassin to kill him.
- The Man Behind the Man: He's the main financial backer to ITEM.
A member of Academy City’s board of directors who has a primarily focus on medicine.
- And I Must Scream: Is left as a fraction of her self that is unable to do anything, forced to stay like that forever until Fräulein decides to kill her.
- Ascend to a Higher Plane of Existence: Became an AIM thought being.
- Creepy Cockroach: Commands a swarm of roaches that are voraciously hungry and will eat almost anything organic or inorganic. The roaches can sometimes disrupt an esper's powers by unnerving them so much that they cannot concentrate.
- Didn't See That Coming: Her defeat is sealed when Fremea Seivelun becomes brave enough to try to defend herself instead of waiting for a hero to save her.
- Eaten Alive: By her own roaches which led to her becoming an AIM thought being.
- For Science!: Her goal in research is not immortality or cures for diseases but rather the "high score."
- Just Desserts: Her physical body was eaten by her own cockroaches, then her essence as an AIM thought being was eaten by Fraulein.
- Mad Scientist: Created a deadly plague called Wild Card Coccus, super roaches, and the cybernetics of Rensa. It is hinted that she became one only after the thought processes of a Kihara clan member were implanted into her head.
- Not So Invincible After All: Despite being an AIM being, she is still eaten by Fraulein.
- Older Than They Look: She is 70, but looks young due to special treatments.
- Übermensch: There's her plan to become an AIM thought being and her plan to create a world without heroes.
- Xanatos Speed Chess: Manipulated all the heroes of Academy City as a step in her plan, gathered the 7 Level 5s and then ascended to AIM being-hood and then take advantage of fluid mechanics in order to create something unimaginable with the hope that at each stage something that would exceed her expectations would occur.
- You Have Outlived Your Usefulness: Fremea Seivelun was essential to her plans, but Yukami callously orders her termination once her part was complete. The heroes save her.
- Zettai Ryouiki: A moderate Grade A with garter straps.
Tsugutoshi KaizumiThe man in charge of locating Gemstone espers. Seria Kumokawa is employed as his advisor.
- Face Death with Dignity: When Motoharu threatens him with torture and death, he calmly says to Get It Over With. He survives.
- Frame-Up: Hisako Yakumi manipulates things so that Motoharu thinks he was responsible for attempts on Maika's life and is the head of the Agitate Halation project.
- I Need a Freaking Drink: He is normally Straight Edge, but he will take a drink during stressful situations.
- Made of Iron: He regains consciousness rather quickly from getting beaten up and tortured.
The man in charge of ensuring Academy City's food supply and internal security. He's also the main financial backer of Disciplinary Action.
- Does This Remind You of Anything?: A man in a high position of power who travels with trains only with a fine taste for good food? The closest country that uses this method of travel for top officials is in North Korea.
- Properly Paranoid: Rides in an armored subway train tailored for his own use when needed for personal travels.
- Wicked Cultured: He's a fan of fine dining. However, he is rumored to be a cannibal.
- You Have Outlived Your Usefulness: Decides to cut his financial ties with DA and employ the Scavengers to get rid of them since he was having more and more trouble with them.
- The Man Behind the Man: One of the main financial backers of DA.
Researchers and Scientists
- Absent-Minded Professor: He admits that he gets so excited about his experiments that he's almost died several times due to not minding his surroundings. At one point, he realizes that both Touma and Gunha are keeping the berserk Mikoto in check and gets so excited about the theoretical interactions between the three powers that he lets Misaki escape without noticing.
- Artificial Limbs: His right hand is fake and detachable. He lost it in an experiment.
- Big Bad/The Man Behind the Man: He's one for the Railgun series.
- Bitch in Sheep's Clothing: At first seems like a nice old man. But in reality, he's a Jerk with a Heart of Jerk.
- Body Double: Uses these to avoid capture.
- The Chessmaster/Xanatos Speed Chess: Pretty much all the time, but this comes to the fore especially during the Railgun side of the Sports Festival arc.
- Eyes Always Shut: The picture is a rare moment. He only opens his eyes when he is excited.
- Faux Affably Evil: He's polite, friendly and an easily distracted scientist. He also thinks nothing of destroying an entire city just to see how it would happen, has sent children into comas for flimsy reasons and was behind a project to murder ten thousand clones.
- Graceful Loser: When Misaki finally defeats him, he compliments her.
- Hive Queen: During the Railgun side of the Sports Festival, he reveals he is the controller of his own small-scale Level Upper network, giving him access to a number of dangerous abilities.
- It Runs in the Family: All of his relatives are evil and/or manipulative just like him in some ways.
- Lack of Empathy: Was completely unaffected by his experiments putting a bunch of little kids in comas. He even gleefully let his own family members volunteer themselves for his experiments. He doesn't even care if the entire city gets wiped out if Mikoto hits Level 6.
- Mad Scientist: The shining example, with his incredibly depraved experiments and lack of respect for human lives.
- Meaningful Name: His given name means "Illusory Life". It can also mean "Primitive", "Primeval", or "Resurrection".
- Out-Gambitted: Thanks to Misaki's Memory Gambit, he entered the self-destruct code for Exterior by mistake, destroying it and knocking him out with the backlash.
- Perpetual Smiler: IS ALWAYS SMILING, since he has absolutely no remorse for his actions.
- Talking Is a Free Action: Averted. When distracted by the possible results that could come from Gunha, Touma and Mikoto shifting to level 6 he begins talking about the possibilities aloud. His captive quickly escapes while he isn't paying attention.
- Awesomeness by Analysis: He easily exploits Accelerator's weak points with surprisingly simple logic. (i.e. Pulling back his punch right before it connects to avoid a vector redirect, or rewriting sound vectors with a whistle to counter a vacuum blast from Accelerator).
- Badass Labcoat
- Badass Normal: He's a Level 0 with absolutely no powers whatsoever...and is fully capable of kicking Accelerator's ass. Take a few minutes and let that sink in...
- Bad Boss: Doesn't care about his mooks at all.
- Curb-Stomp Battle: He knows virtually every aspect of Accelerator's power. Their reunion was completely one-sided.
- Evil Mentor: His methods of teaching Accelerator on how to control his power? By regularly kicking the shit out of him and torturing him. When he was just a kid.
- Genius Bruiser: Is a scientist and also well versed in both hand-to-hand combat and weaponry.
- Hoist by His Own Petard: Finally meets his end after Accelerator awakens for the first time and turns him into a shooting star.
- In Love with Your Carnage: Gets very impressed when Accelerator slaughters a bunch of his mooks without using his powers.(after watching the slaughter): Damn that was cool! I just might fall for you, Accelerator!
- Lack of Empathy: To him, killing someone is the same as pulling out weeds.
- Misanthrope Supreme: Because he finds all humans to be nothing more than garbage, Vento's God's Divine Punishment has no effect on him, since he can't technically bear her any ill will.
- Tattooed Crook: He certainly looks like one.
- Unwitting Pawn: Is completely unaware of the Magic Side. During Vento of the Front's attack on Academy City, Aleister Crowley used him to kidnap Last Order and activate FUZE=Kazakiri, and didn't really care when Accelerator killed him.
- Would Hit a Girl/Would Hurt a Child: He doesn't care who stands in his way, he'll kill them.
- A-Cup Angst: Also pointed out by one of her students, although in reality she's about average.
- Adorkable: Super-Deformed mode, after being scolded by Kuroko and Saten for taking off her stained skirt: "But no man would take interest in my flat and unattractive body anyway." Aww...
- All Your Powers Combined: She eventually proves able to channel the Esper abilities of everyone who has ever used the Level Upper.
- For info, there is 10 000+ students who had used it so she has a lot of abilities.
- Anti-Villain: She's one of the few villains of the series who's goals are the most noble; she trying to find a way to cure her comatose students when the normal means were denied to her. So noble are her goals that Mikoto's willing to forgive her and help her if she choose another way.
- Badass Bookworm
- Badass Teacher
- Big Bad: Of the Level Upper arc.
- Cloudcuckoolander: "My it's getting hot; time to take off my blouse... hey what's wrong?"
- Cool Car: She drives a Lamborghini Gallardo! ... That's one hell of a salary she's got...
- Didn't Think This Through: Part of her Level Upper plan was the assumption that since Level Upper doesn't cause any permanent damage it's safe for her to use, if perhaps not ethical. When Uiharu points out that some students live alone or could pass out while bathing, it's obvious that she never thought of that.
- Ditzy Genius: Very intelligent, but lacks a shred of common sense.
- Easily Forgiven: In the anime, she's bailed out from jail pretty early despite causing the whole Level Upper mess. Justified in how she did it to save her students. But she still sent several people into comas and empowered a lot of dangerous criminals.
- Heaven Canceller was the one who bailed her out. His name carries a lot of weight in Academy City, including its "dark side".
- Exhausted Eye Bags: Always has these, though we see her both before she developed them via flashback and the exact moment she first got them.
- Faux Horrific: Her tendency to strip without provocation gives birth to the urban legend of "The Undresstress", and while it definitely startles people witness to it, the legends make it sound far worse than it is.
- Hot Scientist
- Hot Teacher: One of her students kept asking her to be his girlfriend.
- I Am Not Pretty: She's kind of spacy and assumes it's okay to strip in public since no one really wants to see someone as unattractive as her anyway. In universe reactions seem to support the idea that at worst she looks tired.
- Innocent Fanservice Girl: "Why are you so concerned? My skirt got dirtied, of course I should take it off."
- Mad Scientist: "Not quite normal" is putting it politely even if she's a very nice person, and is actually a Reluctant Mad Scientist (see Anti-Villain entry above).
- Mama Bear: To her students.
- Motherly Scientist: The Trope Namer and Trope Codifier of the 'They're like my own children' scenario.
- Shipper on Deck: She immediately picks up on Mikoto's feelings for Touma, and encourages her to ask him out.
- Superpower Lottery: Via the Level Upper, she has access to virtually hundreds of low-level Esper abilities. It's a helluva lot more dangerous than it sounds, demonstrated when she curb-stomped an entire Anti-Skill swat-team, and even gave Mikoto a run for her money.
- Parental Substitute: To the cruelly named and casually abandoned "Child Errors" of Academy City.
- Tender Tears: Being reunited with her cured students.
- The Atoner: She will do anything it takes to cure the students she unintentionally harmed.
- Unkempt Beauty: She has bags under her eyes. Flashbacks show her without them, until she saw what happened to her students and seemed to develop them instantly.
- Well-Intentioned Extremist: In a subversion, unlike most antagonists in the Index/Railgun, she's well aware whats she doing with Level Upper's wrong but as least she cares about the people who use it and pre-made a cure for them once she's done using the Level Upper Network. It's also worth noting that she made many attempts to cure her students through legitimate means. It was only because all of these attempts were blocked that she resorted to Level Upper in the first place.
A Certain Scientific Railgun.
- Ax-Crazy: She develops that look in her face late in the anime after her motives are realized.
- Bad Boss:Wouldn't be a member of the Kihara Dynasty if she wasn't one to her subordinates.
- Big Bad: Of the second half of A Certain Scientific Railgun.
- Bitch in Sheep's Clothing: Dear God is she ever! When she first appears, she seems like a Reasonable Authority Figure, right up to the point where her relationship to Gensei is revealed. She then throws away all pretenses and ceases to pretend to be anything other than utterly despicable and totally batshit insane!
- Breaking Speech: Punctuated with a railgun... and answered back in kind by Mikoto.
- Bond Villain Stupidity: She literally had all the heroes at her feet in the end of Episode 24... unfortunately she was too busy gloating and kicking our heroes while they were down to wonder just WHY little Uiharu would ask where the control room to the "Capacity Down" was when she could not even get up to deactivate it...
- But Not Too Foreign: Seeing as Gensei is her grandfather and she has a very western name, she's presumably Japanese and something else.
- Call Back: She has a small tube of candies, which she offers to kids after asking their favorite color. This mirrors Komoe's explanation of how an esper's personal reality would mean that the candy would come out whatever color they want. And indeed, espers tend to get the color they asked for.
- Combat Pragmatist: She curb-stomps Mikoto after neutralizing her electrical powers with the Capacity Down.
- Consulting a Convicted Killer: In Railgun S, Mikoto visits her in her cell for advice on saving Febri's life. Therestina really didn't want to help her, but most of her words proved quite useful, including giving Mikoto insight into Haruki Aritomi's motives.
- Didn't See That Coming: She lost because a) she didn't expect Mikoto could use objects other than coins for the Railgun attack and b) she didn't expect that Saten was a Level 0, making her immune to Capacity Down, allowing her to find the device and smash it.
- Evil Laugh: Of a variety so fucked up and crazy that its horrific.
- Expy: If she makes you think of Beatrice from Umineko: When They Cry, you're not the only one. Guess who voiced her.
- The Fake Cutie
- The Fatalist: Declares that everybody in Academy City is a research specimen and has no hope of being anything greater. Mikoto tells her that's a load of crap before defeating her.
- Good Eyes, Evil Eyes: She seems almost like a normal character at first, but once she's revealed to be the Big Bad, her eyes look much more sinister.
- Mad Scientist's Beautiful Daughter: Played straight, as she's certainly easy on the eyes, and the man responsible for the experiment that put those kids Kiyama's trying to save in their comas? He's her grandfather. Subverted too: she's going to complete the experiment.
- Powered Armor: Pilots one along with the rest of MAR.
- Humongous Mecha: Also pilots one of these... while wearing her powered armor.
- Psychotic Smirk: The camera angle focuses in on her mouth anytime she does this prior to The Reveal that she's the Big Bad.
- Reasonable Authority Figure: She seems like this right up until the point where her relationship to Gensei is revealed, at which point all pretenses fall down like the walls of Jericho.
- Rocket Punch: Her Humongous Mecha packs four of them.
- Slasher Smile: OH GOD THAT ACCURSED SMILE.
- Smug Snake: Once her plans really start getting underway. Even after the events of the first season, when she's in prison, she still acts like she's winning.
- Spell My Name with an "S": Certain translations romanize her name as "Thelestina".
- Stuff Blowing Up: Fights with a grenade launcher and later her own Railgun.
- Sweet Tooth: She really likes her jellybeans.
- Walking Spoiler: Of the first season's finale.
- You Have Outlived Your Usefulness: She is a Social Darwinist after all.
- Alliterative Name: Ao Amai
- Badass Labcoat: He wears his labcoat everywhere, even when going to a restaurant.
- Did You Just Punch Out Cthulhu?: He was the man who managed to shoot Accelerator in the head and give him brain damage.
- Disproportionate Retribution: In response to going bankrupt, he tried to get the Sisters to kill everybody.
- Mexican Standoff: He is killed when he and Kikyou get into one and both pull the trigger. Accelerator took her to the hospital but left him to bleed out.
- Not So Different: He tried pulling this on Kikyou, but she wasn't having it.
- Villainous Breakdown: He was going through one during his entire appearance, getting progressively unhinged.
- Would Hurt a Child: The infection he gave Last Order to spread across the Misaka Network made her very sick and nearly killed her. He didn't care.
- The Atoner: The rare-as-a-hen's-tooth scientist who actually felt remorse for the monstrous Level-6 program.
- Because You Were Nice to Me: The reason Accelerator respects her was because she saved him from an experiment that almost killed him.
- Clones Are People, Too: Zigzagged. She made an effort to get to know all the individual clones, but that didn't stop her from sending 10,000 of them to their deaths.
- Cool Teacher: This is what she actually wanted to be instead of a researcher. She describes herself as the kind of teacher who would know all her students' names and be liked by all of them, listen to their problems and help them, would cry at their graduation and be teased for it, etc.
- Geek Physiques: Not stereotypically so, but she notes that she'll collapse if she walks more than an hour outside per day, while being described as not looking very athletically inclined.
- Heroic Sacrifice: Says she's glad Ao Amai chose her to take down with him, instead of Last Order or Accelerator. She calls it her one good deed, though she wished there could've been more in her life. Ultimately an Averted Trope, as she does come close to death, but Accelerator's powers save her from bleeding to death, after which the Heaven Canceler patches her up.
- Mexican Standoff: With Ao Amai. They shot each other at the same moment, but she survived, despite being shot in the heart at point-blank range. The bullet ruptured a coronary artery, but Accelerator's powers kept her blood flowing until she was brought to intensive care.
- Motherly Scientist: Post-Heel–Face Turn.
Child Prodigy from Nagatenjouki Academy. She is an expert on biopsychology, and was hired by one of the research facilities in Academy City to work on the Radio Noise project by using her Testament project, a device that allows the quick uploading of information into a human brain.
- Adaptational Attractiveness: The anime makes her much more attractive then she was in the manga by reducing the size of her eyes, which were huge and bulbous.
- The Atoner
- Badass Bookworm
- Child Prodigy
- Defector from Decadence: She developed the Testament project which was instrumental to Project Radio Noise, but became disillusioned with it when she had an encounter with one of the Sisters and was no longer able to not see them as humans. She started distributing money cards in alleyways and nooks and crannies in order to draw attention to the hidden parts of Academy City, and gave Misaka useful information when she discovered the Radio Noise project.
- Elegant Gothic Lolita: Seems to prefer wearing one.
- Earn Your Happy Ending: While ultimately she is unable to save the Sistersnote , she is able to save Janie and Febri. Misaka also make a grand bargain with Misaki to alter the memories of certain key figures, which results in Academy City not disposing her.
- Good Eyes, Evil Eyes: Her eyes are far from normal-looking, but she's a nice person. She even uses her appearance as an intimidation tactic.
- Gonk: In the manga she has massive, googly eyes, though otherwise she looks normal. In the anime she looks normal.
- Gratuitous English: She has a habit of using random English words as a sort of interjection. They won't be used midsentence, but when moving from one point to the other she'll drop an appropriate English word to move her thoughts along.
- Hope Spot: She manages to install a program that would install emotions into the MISAKA network, but Last Order blocks it as the administrator. Although, it's a Foregone Conclusion if you've read the Index novels. But wait! In the anime adaptation, it's revealed that she actually made it, and the Sisters give her a heartfelt thank you.
- Money to Throw Away: Her ploy to stop the Radio Noise project is to attract bystanders by throwing cash cards at the locations where the experiments would occur so people would be watching.
- Motherly Scientist: She turns her back on the Radio Noise project once she starts considering the clones as more than just objects.
- The Power of Acting: She doesn't seem to have any esper abilities, but she's capable of terrifying her enemies into submission using psychological warfare.
- The Scapegoat: The researchers intended her to take the blame for the terrorist attacks on the research facilities and for the failure of the Radio Noise project. In the manga it's implied that she's executed, but in the anime Misaki alter some people's memories to prevent her from being charged.
- Superpower Lottery: Her supposed ability to kill anyone she has already touched. Whether this was a bluff or not, we may never know.
- Spared by the Adaptation: The manga strongly implies that she is executed by Academy City following her capture by ITEM. In the anime, she's handed over to STUDY to continue a project similar to Radio Noise, but this time she manages to earn her happy ending.
- Teen Genius: At seventeen years old, she's involved in biopsychological research and the creator of the Testament teaching device for the Radio Noise project.
- Thou Shalt Not Kill: When she fights, she avoids attacking her opponent's vital areas.
- Token Good Teammate: Of STUDY. She joined the group to keep on eye on Febri and deliver her into the hands of Mikoto and her friends. She also does not share STUDY's anti-esper sentiments.
- Touch of Death: Claims to have it to scare out some Skill Out thugs.
- What Happened to the Mouse?: In the manga, we never learn what happened to her after she got captured by Team ITEM's henchmen. In the anime, she re-appears as a central figure in the Diffusion Ghost arc, which ties into the movie.
- You Can't Go Home Again: Due to being caught up in the Dark Side of Academy City, she needs the protection of a big organization or else she would be quickly killed. In the Railgun S finale, Mikoto persuades Misaki to erase the memories of several people who have grudges against Shinobu, giving her a clean slate.
- Voiced by: Kazuyoshi Hayashi (Japanese), Mark Stoddard (English)
- Character Tic: He indicates his boredom and lack of interest in Mikoto's attempts to interfere by simply cleaning his nails while all the researchers panic. She's never able to get ahead of his security efforts.
- Heel–Face Turn: Right after the Sisters arc, his next appearance is working for Misaki. She may be morally ambiguous, but she generally means well and Keitz is happy for the chance to work on something less distasteful.
- Heroic Self-Deprecation: Refuses to allow Misaka 10032 to thank him given that without his efforts Mikoto would have shut down the Level Six Shift program quite easily. How much he was involved in the actual experiments is unknown, but he does seem to feel somewhat bad about however much that was.
- No Name Given: He didn't actually get a name in the manga, even when he appeared for a second arc.
- Punch Clock Villain: He doesn't seem to be an actual researcher. He was simply hired to keep the project running smoothly despite interruptions, a task he handles quite easily. After the project ends anyway, he gets away clean.
A genius scientist and pioneer in the field of cyborg research who first appears in the Dream Ranker arc of the Railgun manga. Took part in a grisly experiment whereby her body and brain were split up and rearranged into two copies of herself, with cyborg parts replacing the missing limbs and organs of each.
- Crazy-Prepared: Carries around a device that can counter cyborg technology, knowing the Doppelganger might try to attack her.
- Dark and Troubled Past: A childhood accident nearly killed her and she only survived thanks to a partial lung transplant from her mother. However, this caused her mother to weaken and fall ill, driving Ryoko to research cybernetics in the hopes of saving her.
- Gone Horribly Wrong: Totally averted. Ryoko suffered no physical or psychological effects from being separated and subsequently recombined.
- Half the Man He Used to Be: The experiment she performed on herself involved slicing herself into pieces and combining the resultant parts with cybernetics in order to create two copies of herself. Her biological parts were recombined after a year, while the cybernetics were used to create the Doppelganger.
- Ignored Expert: Warned her fellow scientists that putting her discarded cyborg parts back together in order to study whether they now had a soul was a bad idea. They really should have listened to her.
- Nerd Glasses
- Professor Guinea Pig: Nobody was willing to volunteer for her cyborg experiment, so she had the procedure performed on herself.
- Teen Genius: A savant in the field of cybernetics despite being only fourteen years old.
- Ascended Extra: Originally a nameless member of Judgment in the manga, her role was significantly expanded in the Railgun anime.
- Authority Equals Asskicking: Averted in that, although she has a lower Power Level (Level 3) than Kuroko (who's a Level 4) she actually outranks the Lovable Psycho Lesbian in terms of bureaucratic authority.
- And as shown in the omake of Railgun's Manga Volume 5, in terms of raw skill she is more-than-a-match for Kuroko as a Martial Artist.
- Badass Adorable
- Badass Biker: It comes in awful handy when your younger friends need to get to a battle "fast."
- Boobs of Steel: The strongest physical fighter in her branch, and also the most well-endowed.
- Cool Big Sis: To the younger girls in the Railgun cast.
- Dark and Troubled Past: Linked to the fact that she was once a member of a gang of...
- Delinquents: Which's a diametric opposite of the side of the law she's on right now.
- Desperately Looking for a Purpose in Life: What led to her joining Big Spider, and subsequently Judgment.
- Fights Like a Normal: Since X-Ray vision is her only power, she fights using martial arts. This was how she was able to join Big Spider despite their hatred of espers. Wataru Kurozuma figured out she had an ability, but kept it a secret from the rest of the gang.
- Heart Is an Awesome Power: X-ray vision may not seem to be that impressive on its own, but when that means never being surprised by concealed weapons, coupled with her bone-breaking martial-arts skills, it makes her more than a formidable match in battle.
- Hello, Nurse!: The scene where she appears in her delicious swimsuit.
- Improbable Age: She's the chief of the 177th branch of Judgment, which is justified since all members of Judgment are young Esper students.
- Just Friends: With Wataru Kurozuma. She desperately wants to change this, but he sees her as a little sister.
- Ms. Fanservice
- Nice Girl
- Reasonable Authority Figure: More of a "Good Cop" than Kuroko in the Judgment Brigade.
- Specs of Awesome
- Stupid Sexy Flanders: So devastatingly sexy in her swimsuit that she's able to provoke this reaction from the straight girls of the cast. And the Misakasexual. And a female snake.
- Sweetie Graffiti: She drew one shaped like an Umbrella of Togetherness which had her name and that of her sempai at one of her old hangouts when she was a delinquent, but said sempai scratched it out, believing that kind of relationship wouldn't work out for them and because he wanted her to have a better life.
- Team Mom: When a voice of calm and mature reason is needed amongst the girls.
- Trademark Favorite Food: Musashino Milk, which she first got from Kurozuma.
- X-Ray Vision: Her ability.
- Younger Than They Look: She's a high school student? With that body?
- Big Damn Heroes: In the final episode of Railgun S, she rallies all of Judgment to help stop STUDY.
- Brilliant, but Lazy: She's too lazy to come to work regularly, but she's a brilliant field tactician and fighter.
- Fangirl: Of Teen Idol Hajime Hitotsui.
- The Medic: In the manga, she is seen patching Konori up after a battle.
A special little girl introduced in a mini-novel written by the author of Durarara!!, she instigated a fight between Sogiita Gunha and Misaka Mikoto. Unlike the rest of her family, she is not evil and became friends with several of the 'child errors' especially Banri. Her power is similar to Rikou Takitsubo's in that it involves the manipulation of AIM fields, but is not as advanced.
- Beware the Nice Ones
- By-the-Book Cop: Subverted. She had a decent reason to arrest Misaka and From a Certain Point of View, Gunha was resisting arrest. However, she did those things for her own selfish desire to test herself against a Level 5.
- Canon Immigrant: Originally conceived in a side story written by Narita Ryogo, Kamachi acknowledged her existence when he brought cyborgs in to the main story.
- Cyborg: Her body is 70% cyborg due to her own experimentation, forcing Heaven Canceller to replace her body parts with mechanical ones.
- Evil Uncle: Her uncle is Amata Kihara. Let that sink in for a second.
- I Am Not Left-Handed: Thought she was doing pretty well against Misaka until she witnessed the power the Electromaster used against Gunha and realized that Misaka had been pulling this on her the whole time.
- Little Miss Badass: In elementary school but far from helpless in a fight.
- Meaningful Name: Her given name is a Buddhist term meaning a really big number. It can also mean 10^60 (novemdecillion) or 10^72 (trevigintillion).
- Power Levels: She wants to become a Level 5 one day.
- Professor Guinea Pig: Quite happily volunteered for dangerous experiments and procedures, some of her own design, in order to achieve her goals.
- Super Speed: As a result of being a cyborg.
- Troubling Unchildlike Behaviour: Not as bad as other cases in the Raildex verse, but still...
- White Sheep: Not actually evil, though not as profound as Bersi of GREMLIN (Kagun Kihara).
- Arson, Murder, and Jaywalking: Lampshaded when chasing Hamazura and other Skill-Outs.Yomikawa: U-umm. This is Aiho Yomikawa of Anti-Skill Branch 73. With charges of theft, property damage, attempted murder, and interference with a public servant’s duties, I’m taking you pieces of shits down to hell!
Hanzou: Tch!! Miss Tits there must have a grudge to put interference with a public servant’s duties at the list’s climax!
- The Atoner: In a conversation with Accelerator about atoning for one's sins, she says she, like Accelerator, has "a debt to pay". It's not revealed what that debt it, only that it is the reason she Wouldn't Hurt a Child. The implications are obvious.
- Authority Equals Asskicking: Comes with being an Anti-Skill officer.
- Badass Normal: She takes on even the most dangerous enemies in the city and still lives.
- Did You Just Punch Out Cthulhu?: After Accelerator returns from World War 3 she punches him, then hugs him.
- Fangirl: Of Teen Idol Hajime Hitotsui.
- Gag Boobs: The writer likes pointing out her "ridiculously large" or "unbelievably huge" breasts when describing how she looks in the novels.
- Hard-Drinking Party Girl: Only Komoe-sensei can outdrink her.
- Hot Teacher: She is for being a teacher in Touma's school.
- Innocent Fanservice Girl: "Gee, I've been living alone so long I don't lock the shower doors no more. Sorry 'bout that!!" (To a completely deadpan Accelerator)
- Neat Freak: Has a habit of cleaning her room when she gets in some kind of trouble, to the point that she tends to lose her keys in the process.
- Parental Substitute: After she adopts Accelerator and Last Order. Eventually, WORST joins the picture.
- Rapunzel Hair: Down to her thighs.
- The Rest Shall Pass / The Cavalry: Will often show up near the end of an arc to take care of minor, but often crucial tasks, while the heroes deal with the main threat. Examples include taking out Awaki's subordinates in Volume 8 of Index, rescuing Rikou in Volume 15, and holding off MAR reinforcements in episode 24 of Railgun.
- Throwing Your Shield Always Works: And throwing a riot shield can incapacitate a heavily armed terrorist without killing him!!
- All-Loving Hero: Despite being an absolutely worthless warrior, Tessou still strives to serve society as a kind and helping hand in need.
- Alliterative Name: Tsuzuri Tessou.
- Butt Monkey: Episode 17 shows why she gets into a lot of trouble.
- Cute Clumsy Girl: She failed to reach her train and falls down.
- A Day in the Limelight: Episode 17 of the Railgun anime.
- Gamer Chick: She really likes fighting games.
- The Load: In spite of being a SWAT Team officer, she manages to become a hostage held at knife-point whom needed Yomikawa to rescue her.
- Lovable Nerd: Helps people as part of her Anti-Skill duties.
- The Medic: One of her only useful skills is to patch others up after a battle.
- Nice Girl: Part of being an All-Loving Hero.
- One of the Kids: Loves to play arcade games in her free time.
- Proud to Be a Geek: Somewhat. It takes some Character Development on her part to show how much ass she can kick in a good fighting game.
- Voiced by: Fuyuka Oura
- Big Bad: Of the Railgun OVA she's in.
- Dirty Cop/Lawman Gone Bad: After Kuroko reveals that she's the culprit in the OVA.
- Fair Cop: Jounan qualifies as this since she is pretty.
- Hot Teacher: Jounan was one for Nagatenjouki Academy prior to being fired.
- Villain Exit Stage Left: After her reveal as the Big Bad, Jounan gets away by using a flashbang and her credentials to get a speedboat.
- Wrong Genre Savvy: Jounan thinks that she almost got away when she used her Anti-Skill credentials to jack a speedboat. Misaka was waiting for her at the river to be ambushed.