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Academy City, as the name suggests, is a city built around schools and educational institutes. As such, there are a large number of students and teachers residing in the city, though the degree of quality between them goes from as great as Tokiwadai middle school to as poor as Touma's unnamed high school.

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    Mikoto Misaka 

    Kuroko Shirai 

    Mitsuko Kongou 

Mitsuko Kongou
Voiced by: Minako Kotobuki (Japanese) and Jamie Marchi (English)

A Level 4 and 2nd-year transfer student of Tokiwadai Middle School. A rival to Kuroko Shirai, she is confident, boastful, and desires to become a Level 5. Although often boastful of her abilities, she usually finds herself the victim of several attacks.

  • Alternate Continuity: Has irreconcilable differences between how she is portrayed in the anime and in the manga. In both the manga and a cameo in the novels she is introduced as a New Transfer Student about a month after the events of the Railgun anime's first season, and quickly became good friends with Mikoto as well. The problem is that in the Railgun anime, she shows up in the very first episode, and has some important roles throughout the first season.
  • Back-to-Back Badasses: With Kuroko in Railgun Episode 24.
  • Big Damn Heroes: Twice, with Lampshade Hanging.
  • Blow You Away: Her ability, Aero Hand, lets her create ejection points on aything she touches, which will create gusts of wind powerful enough to launch trucks as projectiles and knock over walls. She can delay the ejection of wind to ambush enemies. At full power, she can launch things into outer space!
  • Catch Phrase
    "Do you, (person), know that you're (description) with Kongou Mitsuko of Tokidawai?"
    • There's also this variation:
    "Do you persist in committing this outrage knowing that I am Tokidawai's Kongou Mitsuko?"
  • Drama Queen: When she's taken out during a dodgeball-esque event during the festival, she dramatically falls to the ground like she was dying, requesting that her attackers take care of her pet snake Ekaterina in her place. The referee immediately notes that those who have lost need to stand up and go to the defeated zone, causing her to sheepishly stand back up.
  • Cuteness Proximity: She really likes children, and can barely contain herself around Febri.
  • Feather Boa Constrictor: During the Beach Episode. It is her pet, Ekaterina.
  • Friend to All Children: Much like Kuroko, though she's more open about it.
  • Hidden Depths: Mikoto is surprised to find that Kongou was well aware that the girl participating in the tag competition wasn't actually Mikoto. Of course, Kongou assumed she was Mikoto's twin sister rather than her clone, but close enough. That's how 10032 is treated anyway.
  • I Just Want to Have Friends: She is eager to have friends as she enters Tokiwadai. At first, her boastful attitude turns several people away, but she ends up becoming friends with Maaya and Kinuho.
  • Jerk with a Heart of Gold: While arrogant, she honestly cares for her underclassmen and comes twice to the rescue of her self-proclaimed rival/friend Mikoto and is kind to children. And despite her arrogant attitude, she's also perfectly friendly to the victors after being taken out in one of the festival events.
  • Kindhearted Cat Lover: She's badly injured by Baba Yoshio because after making it clear she'd kick his ass he targeted a nearby kitten instead. She tries to protect it and gets hospitalized as a result. Mikoto is not happy about this at all. She might well have hospitalized him or worse if she'd known he wasn't being mind controlled by Misaki.
  • Large Ham: She loves theatrics and hamming it up as an arrogant and talented rich girl thanks to her father telling her people gather around a person of quality. He actually just meant that if she was a good person she would make lots of friends, but by then it was too late! A ham was born.
  • Lovable Alpha Bitch: Kind of obnoxious and condescending, but she's actually very sweet. However, she actually doesn't really have a high position at Tokiwadai. She might have been able to, but realized she didn't actually care about that kind of thing.
  • Ms. Fanservice:
    • Shameless Fanservice Girl: And she knows it; combining her generous proportions with heart-stoppingly erotic mastery of suggestive poses to make her one of the most popular models in Academy City.
  • New Transfer Student: At least in the manga.
  • Noblewoman's Laugh: She has one of these. Her variant however is not nearly as annoying as most examples of this trope.
  • Normal Fish in a Tiny Pond: She transfers into Tokiwadai intending to take it by storm, but much to her dismay absolutely nobody cares. She actually just annoys people. If she had done any research, she'd have learned that you have to be at least level three to get in, there are two level fives and everyone else there is fairly rich as well. She doesn't stand out at all.
  • No Sense of Direction: She gets lost twice in one day looking for her dorm.
  • Ojou: The vocabulary she uses is extremely refined and genteel, even more-so than Kuroko's, as the thugs trying to mug her Episode 15 point out, annoyed by the noble arrogance it carried.
  • One-Woman Army: No matter how many opponents, she can mow them down with Aero Hand.
  • Overshadowed by Awesome: She's actually a really powerful Esper. But she goes to the same school as two Level 5s...
  • Rich Bitch: Intentionally acted like this initially, because she misguidedly thought it would be the best way to get friends.
  • Start My Own: Sometime after arriving as a transferee in Tokiwadai, she notes how there are several cliques/factions in the school. She couldn't decide which one to join, so she opts to start one of her own, but is discouraged after seeing the largest clique, led by the Queen of Tokiwadai. Then after failing to get anyone to join, when Wannai and Awatsuki offer to join her clique, she says they should be friends instead.
  • The Rival: With Kuroko in the anime. However, they come to grudgingly respect each other as warriors after fighting side-by-side in Railgun Episode 24.
  • Uncle Pennybags: Though she is not shy about showing-off how wealthy and chic she is, she is equally generous about sharing all the perks and benefits of her wealth with her friends.
  • Unknown Rival: She considers Mikoto her greatest rival to dominance in the school during the brief period she's trying to become someone important, but Mikoto never figures that out. She gives up right around the same time that she realizes her first friend in Tokiwadai was Mikoto all along.

    Misaki Shokuhou 

Misaki Shokuhou

The Queen of Tokiwadai

Voiced by: Azumi Asakura (Japanese), Teri Rogers (English, Railgun 1/S)

The fifth Level 5 Esper. Being the second Level 5 to attend Tokiwadai, her followers and Misaka's followers often come into conflict. Her ability, Mental Out, involves the manipulation of memories and the human mind. She is also the leader of the largest clique in Tokiwadai.

She first plays a major role in the Railgun Daihaseisai Arc, and is a bit of a Wild Card.

  • Achilles' Heel:
    • Her mental powers have no effect on animals and robots, so if she is attacked by them, she is extremely vulnerable.
    • She actually has to aim at a person to use her mental powers on him, so if he is moving too fast, it would take considerable luck for Mental Out to work.
  • A-Cup Angst: She was flat and ashamed of it when she was younger. One year later, she's grown much taller and filled out enough to look three to five years older than she actually is, much to Mikoto's despair.
  • Agony Beam: Mikoto's electrical field prevents Misaki's mental powers from working on her. However, when Misaki tries, Mikoto gets a painful shock.
  • Alternate Character Reading: The name of her esper power, Mental Out, can also be read as "Psychological Control".
  • Amplifier Artifact: "Exterior," which can boost her powers to beyond what even a level 5 should be capable of. It's a cloned portion of her own brain, enlarged to gargantuan proportions. It was originally intended to be able to give anyone her powers, but she didn't like that idea, so she stole it for her own use. In chapter 61 of the Railgun manga (Railgun T, Episode 10), Gensei Kihara hijacks it and uses it to force Mikoto to join with the MISAKA network and undergo the Level 6 Shift.
  • Anchored Ship: Touma will never be able to remember who she is. This is different from the amnesia he got while saving Index in that it predates it and applies only to Misaki. Even after that event, he's met her several times, but always forgets her again afterward. She knows it's pointless to have any hopes for him, but if he ever does regain the ability to remember her she's still waiting.
  • Animal Motifs: Her surname contains the character for "honey bee". She sometimes calls herself Queen Bee and she is referred to as the bee in scientists' reports.
  • Benevolent Boss: Her clique is completely loyal to her and willingly submit to her mind control and do not mind even her most disruptive demands. In return, she keeps them out of danger, places their safety above her own and doesn't control them without their consent.
    Senya: "After all, Misaki-chan acts all cool and says you're just pawns, but she actually loves all of you."
  • Bitch in Sheep's Clothing: She's much more ruthless than what her outward sweet persona suggests to most people, and can be very paranoid and vengeful when provoked.
  • Break the Cutie: The events of New Testament 22 Reverse were not kind to her. By the end she's spent time crying while huddled on the floor, deeming herself unworthy of any trust that she'd been given, and regretting her part in everything.
  • Chekhov's Gunman:
    • She was first mentioned in the first volume of Index as someone who might have been able to fix Index's memory loss.
    • Mikoto considered asking her to fix Touma's memory loss, but changed her mind, not wanting to be in her debt, in addition to being unable to trust her.
    • She shows up briefly in the last episode of Railgun S. Mikoto swallowed her pride and asked her to edit a few memories so that Shinobu, Janie, and Febri could live in peace.
  • Chekhov's Skill: Chronologically, the first trick we see her perform with her ability is switching someone's perceptions; she demonstrated the ability to make a test subject think the apples (which he hates) he was eating were actually watermelon slices. Soon after, the researchers ask her to use this trick to pretend to be Dolly's friend. And then it turns out she was using this trick on the researchers the entire time, sitting in on their meetings after she had their helmets sabotaged.
  • Crash-Into Hello: How she first met Touma. She later recalls him having Toast of Tardiness in his mouth (he didn't).
  • Crippling Overspecialization: Due to her use of her esper ability to skip physical classes, she's in pretty bad shape and gets tired easily whenever she has to run. Her esper ability is also only useful in humans.
  • Curtains Match the Window: Her hair and eyes are both gold.
  • A Day in the Limelight:
    • Volume 11 of NT is from her perspective. Accelerator and Shiage don't appear at all, Mikoto is only mentioned in passing and Touma is only present in flashbacks and at the very end. We finally learn why she trusted him so quickly a few volumes before and in Railgun, something very unusual for her given her paranoia.
    • To a lesser extent, the Railgun version of the Daihaseisai Arc, where she is properly introduced, some of her backstory is revealed, and she plays a major role in thwarting Gensei Kihara's plans.
    • Volume 22R of NT has her as a spotlight character.
  • Everyone Calls Him "Barkeep": She is usually referred to as the "Queen of Tokiwadai" rather than her actual name.
  • Everyone Has Standards: She knows she's a jerk, but she won't abuse the power over people who have willingly become her pawns, she tries to keep mental damage to targets to a minimum and she refuses to read Touma's mind.
  • The Faceless: Despite first being mentioned in the very first volume of Index, she never makes an official appearance until chapter 41 of Railgun, where she shows herself to Mikoto. Justified, as she apparently uses her power to communicate through others.
  • The Fake Cutie: She has rather cheerful and goofy mannerisms that cover up a paranoid and manipulative mind. Of course, she's not actually trying to fool anyway, she just seems to find it fun to piss people off with her artificial cutesy attitude.
  • Fandom Rivalry: An in-universe example of it, there's some conflicts between her followers and Mikoto's fans in Tokiwadai.
  • Fatal Flaw: Paranoia. She refuses to trust people she can't mind read, which causes problems with Mikoto. Even when the two have the same goals, Misaki does everything she can to sideline her until absolutely forced to work together. Touma is the exception to this rule. Due to his Imagine Breaker, she obviously can't mind read him, but doesn't seem to care. In fact, he may be the only person she truly trusts.
  • Friendly Rivalry: Mikoto doesn't like her and beneath her cheerful attitude Misaki doesn't care for her either. However, they're quite capable of cooperating and they don't hate each other nearly as much as Misaki and Seria do. There's no real malice behind it and they reached an understanding while saving Misaka 10032.
  • Green-Eyed Monster: Though she hides it well, she reveals that she's very envious of Index of all people in New Testament Reverse, because though their circumstances with needing to be saved by Touma were about the same and even resulted in him losing his memory, he can never remember her.
  • Good All Along: Despite her malicious introduction and mind control powers, she is a good person who operates under a code of personal rules of "always taking a good care of those who she control". This extends to her clique of willing follower and even applies to her enemies.
  • Good Is Not Nice: Despite first appearances, during the arc of the Railgun manga where 10032 gets kidnapped, she is not the villain. She kidnapped 10032 to keep her out of the bad guy's hands, and to heal some damage done to her.
  • Hypocritical Humor: When Mikoto calls her out of shape, she says only someone with the mind and body of a child would be so petty about mere physical ability. Mikoto makes fun of her Wingding Eyes by asking if she's from a shoujo manga and an offended Misaki retorts that insulting someone's body is just low.
  • I Am Not Left-Handed: The researchers studying her ability used complicated technological helmets to block her powers. She suborned one of the low-level techs, had the helmets sabotaged and was able to subtly take control of the entire operation without anyone noticing.
  • I Got Bigger: Inverted, as New Testament Volume 11 reveals that in the previous August (a year before the events of Index/Railgun) Shokuhou had no bustline to speak of, and only a mere 148 centimeters tall.
  • I Want My Beloved to Be Happy: She fell in love with Touma during an incident which ended up erasing his memory of her permanently but stays out of his life to avoid troubling him.
  • I Will Wait for You:
    Misaki: "If... If someday you do manage to overturn the expectations created by the adults and you remember me... Then let's have an important talk. A very, very sweet, kind, and important talk."
  • I Work Alone
    • In the Railgun manga, she says trust and co-operation are unreliable, and she won't work with anybody whose minds she hasn't read. She eventually seeks out Mikoto for help simply because she's forced to admit that she won't be able to save the Sisters otherwise and the memory of her friendship with Dolly is one of the few redeeming characteristics about her. Following the Daihasei Festival, she's more willing to work with Mikoto if their interests align.
    • The sole exception so far is Touma, due to her feelings for him, despite that her powers obviously won't work on him.
  • Jerkass Has a Point: When Misaki bluntly states that she has no intention of trusting people whose mind she cannot read, Mikoto is horrified at her paranoia. But as Misaki points out, why would you trust someone in Academy City? Trusting people got ten thousand clones murdered just because a little girl wanted to help cure muscular dystrophy.
  • Jerk with a Heart of Gold: Despite working alongside Misaka she isn't exactly the nicest person. However, she does have standards: She's quite protective of her minions and were she to commit a crime with a pawn or lead them to be injured, she would take full responsibility for it.
  • Kick the Dog:
    • When one of the members of her clique tries to prevent Misaki from consuming more sweets (out of concern for Misaki's 'wonderful proportions'), Misaki mind controls her and the rest of the clique, telling them to 'challenge yourselves to eat 15 eclair as fast as possible.'
    • Her reaction to Kongou getting rather brutally injured by Baba Yoshio. She basically says it's a shame that Kongou was hurt, but it helped her anyway since she had no way to deal with Yoshio's Killer Robot mooks.
  • Locked Out of the Loop: Does not like this at all. However, both times she tried to get Touma to tell her what's really going on, she gets interrupted by outside forces.
  • Love Makes You Evil: In New Testament 22 Reverse, Misaki serves as the Emanation's lynchpin as she uses her powers to hold several victors of the war under her sway, solely because he remembered her. That even includes turning on Misaka, whom she'd built something of a friendship with while co-piloting the A.A.A.
    Misaki: "But he remembers me. I don’t care if it’s a miracle or a coincidence. I was never hoping for a logical answer. But… but whatever he looks like and whatever he might do…But if there are two Kamijou-sans out there… and one remembers me and one doesn’t…That’s the Kamijou-san I shared that summer with!! So I’m sorry, Misaka-saaan!!!!!!”
  • Meaningful Name: Her first name can be translated as "Wish For Control". Her full name can be translated as "Dominated Psychology".
  • Memory Gambit: Finally defeats Gensei Kihara by using her powers on herself so that she'd think the limiter release code and self-destruct code for Exterior were switched. Gensei entered the self-destruct code by mistake, never suspecting a thing until it was too late because she sincerely believed it was the limiter release code.
  • Morality Pet: Touma and Dolly are the easiest ways of bringing out her good side. The latter is dead, but Misaki values her memory greatly.
  • My God, What Have I Done?: She has a moment when she finally calms down in New Testament 22 Reverse, after basically giving the Emanation control over a sizable number of magicians, as well as using her powers on Index and Misaka.
  • No Good Deed Goes Unpunished: She saved Touma's life by using her powers, but in the process damaged his brain so that he will never be able to remember her face.
  • Ojou: According to Mikoto, she's the most Ojou of all the Ojous at Tokiwadai, which really says something. She, however, subverts the traditional archetype by being quite frivolous, making silly poses, not caring for her weight, and saying cliché anime lines. It's just that she erases certain people's memories and that her fangirls don't say anything about it.
  • Only Friend: Dolly is implied to be one of the few people she ever cared for.
  • Power Crutch: She carries various remotes in her purse. While she doesn't necessarily need them to use her power, the potential range and usage of her power is simply too complex for her to control correctly and thus she uses her remotes as a focus on what she wants to do.
  • Power Incontinence: She uses a series of remotes to help control her power. There are just so many applications that it's hard (but not impossible) for her to focus on the specific thing she wants. The remotes simply help her concentrate.
  • Properly Paranoid: After what happened to Mikoto, Accelerator, and especially Touma, can you blame her? In New Testament Volume 7, her paranoia allowed her to correctly guess that Tsuchimikado sent Touma on a wild goose chase in order to get him out of the way so he wouldn't interfere with whatever he's doing.
  • Secret Keeper: She not only knew Touma prior to his memory loss, but also knows about Imagine Breaker.
    • It's revealed that the memory loss Misaki refers to upon meeting Touma is actually a separate instance.
  • Sitcom Arch Enemy: She does not get along with Seria Kumokawa.
  • Squishy Wizard: Given that her powers deal with the mind, and that she skipped P.E. and does not exercise regularly, she is a skinny, out-of-shape girl. In Episode 8 of Railgun T, she's panting and ready to collapse from trying to follow a lightly-jogging Mikoto.
  • Super Drowning Skills: In addition to not exercising, she never bothered to learn how to swim. She once almost drowned after falling into a shallow pool until she was told by Touma to Stop Drowning and Stand Up.
  • The Rival:
    • To Mikoto, who is the other level 5 at Tokiwadai. Though part of the reason she resents Mikoto is because her relationship with Touma is similar to how her's was before Touma lost his memories protecting her. It mellows into a Friendly Rivalry eventually.
    • Also to Seria Kumokawa. Both are regarded by people as high-class beauties. Both are experts at manipulating the mind, Misaki via her power, and Seria via pure manipulation and guile. Both are extremely wary of one another, keeping tabs on one another (Misaki via mind controlled 3rd parties, and Seria via surveillance technologies) leading to a sort of cold war between the two, with the knowledge that should conflict break out between the two, it would only lead to a mutually assured destruction. The ONLY time the two can ever put things aside and work together is if it concerns Touma, because both of them love him and doesn't want the other to get a head start on the other.
    • To Index as well. Touma's situation with her is practically parallel and in her she sees all the attention and happiness Index has with him, which she never can.
  • Story-Breaker Power: She loves Touma, is a decent enough person in her own way, seems to have a lot of free time and is at least in contact with Mikoto on a fairly regular basis. However, her powers give her complete, instant and unresistable control over anyone she targets, so long as they aren't moving too quickly for her to hit, an electromaster or mind control esper or wearing very specialized gear (though some magicians have safeguards in place as well). She could, in theory, defeat the likes of Fiamma in a straight confrontation unless he killed her immediately. See the problem? Not only is this too strong of an ability for an ally, but it's really too powerful even for an enemy to have, so her power can't be put together with a machine like Mikoto. It's somewhat lampshaded during the "Indian Poker" arc, when Junko points out that if Misaki and Mikoto decided to work together on anything, they would be a nigh-unstoppable crime duo thanks to their ability to mess with the memories of others as well as mess with any and all security footage.
  • The Tease: Absolutely willing to help with Touma and trusts him completely, but she also likes screwing with his head by flirting with him through a puppet and making the poor guy do highly embarrassing things. He can't even apologize.
    Touma: Why are you increasing my supposed list of crimes!?
  • Telepathy: Misaki's power, Mental Out, makes her Academy City's most powerful telepath, capable of reading and manipulating minds in several different ways. However, it only works on people, not animals or robots.
  • Unwitting Pawn: All her actions in the Daihaseisai arc in the Railgun manga play straight into Gensei Kihara's plan.
  • Verbal Tic: Uses "power" and "ability" as suffixes a lot.
  • Voice for the Voiceless: She often uses mind-controlled proxies and her own followers whenever she needs to communicate.
  • Wild Card: She's a level five with zero confidants and rarely appears in public without an escort of minions, occasionally refusing to appear directly at all. She knows a fair amount about the city, the dark side and even Imagine Breaker, but she tells no one anything and rarely moves except to defend her own position. She does have a soft spot for Touma and the Sisters, but she doesn't like Mikoto and hates Kumokawa Seria.
  • Wingding Eyes: She has stars in her eyes. According to her she was born like this. Additionally the same stars appear in the eyes of those who she is controlling.
  • Younger Than They Look: She's a middle-schooler, but she could pass for eighteen or nineteen easily. She actually developed very quickly: A mere year ago she basically looked like a blonde Kuroko.
  • Zettai Ryouiki: With lace.

    Junko Hokaze 

Junko Hokaze

Voiced by: Minami Tsuda (Japanese), Michelle Lee (English)

A friendly third year girl who acts as the face of sorts for Misaki's clique. She's quite friendly and slavishly devoted to the Queen. She's a Level 4, and her ability Rampage Dress allows her to manipulate the electric signals in her cells to perform past the limits of her physical abilities.

  • Anime Hair: She's most commonly referred to as the ringlets curl girl thanks to her rather improbable hair.
  • Ascended Extra: She's the main character in the spinoff A Certain Scientific Railgun: Astral Buddy.
  • Birds of a Feather: She gets along surprisingly well with Mikoto. The pair bond over their mutual age inappropriate love of Gekota.
  • Boxing Lessons for Superman: After the Ideal incident, Junko, who was already superhumanly strong and fast due to her esper power, studied martial arts in order to become stronger.
  • Chuunibyou: Junko used to warn others not to approach her because of her "inner destructive urges". While justified in part by difficulties controlling her full power, she feels deeply embarrassed whenever it comes up in the present day.
  • Compressed Hair: She's somehow able to hide her Regal Ringlets near completely within a swimming cap that doesn't even bulge. Mikoto doesn't even recognize her until she takes the cap off and can only stare in shock as her hair all pops free.
  • Cool Big Sis: To Yuuri Senya
  • Cute Bruiser: Junko appears to be another ladylike Ojou of Tokiwadai, but she's not to be underestimated. Her punches and kicks are superhumanly strong due to her esper ability, she can lift and throw steel beams, and when Arei Houjo tried to blind her by throwing a liquid at her eyes, Junko countered by headbutting Arei and breaking her nose.
  • Entendre Failure: When Aogami Pierce is selling risque dreams of Mikoto and Misaki while within hearing range of the two and Junko, the level fives get increasingly angry while the entire lewd rant flies completely over her head.
  • Even the Girls Want Her: Junko is shown to be popular in Tokiwadai and has a lot of female admirers, including a Kuroko-expy.
  • Happiness in Slavery: Her idea of a perfect dream and way to bond with Mikoto is a two part dream. The first part is about Gekota, so well done there. The second part is making the dreamer work as Misaki's slave. Mikoto wakes up the next morning horrified but unable to actually be angry since she meant entirely well.
  • Healing Factor: She has a fairly powerful one, healing so fast that she seemingly doesn't get injured in the first place.
  • Lightning Bruiser: Her power makes her strong enough to break through reinforced walls and fast enough to jump between roofs.
  • Ho Yay: Misaki Shoukuhou is shown to be possessive of Junko when Junko starts interacting with other female characters, often claiming that Junko is hers.
  • My Greatest Failure: Junko agonizes over being unable to protect her friends while she was in the Ideal institute. She also regrets pushing them away due to her difficulty in controling her powers.
  • Nice Girl: She's very friendly and well meaning and manages to be friends with both Mikoto and Misaki. Unfortunately, she lacks the aggressive edge of either of them and is intimidated by both when they get angry, despite being older.
  • No Name Given: Until she gets her own spinoff, she's never given any sort of name and was only identified as Ringlet Curl Girl. Mikoto might not even know her name in the first place.
  • Oblivious to Love: In the first chapter of her spinoff series, she completely fails to understand that one of her classmates is in love with her until Kuroko explains it to her, which results in Junko becoming a blushing mess.
  • Odd Friendship: During the Level Six Mikoto project she's tasked by Misaki with stalling Mikoto and does a rather good job simply by talking about shared interests. Afterwards they're shown talking again, meaning Junko really did want to be friends.
  • Regal Ringlets: She has multiple large ringlets in the back. She was even known as the Ringlet curl girl until her actual name was finally revealed.
  • Strange Minds Think Alike: When she and Mikoto are fangirling over Gekota the other members of Misaki's clique stand in the background completely unable to relate to any of their logic or statements, seemingly embarrassed on Junko's behalf.
  • Weirdness Censor: Like most Science afflicted characters, Junko assumed the ghost following her is the product of an esper power. To be fair, she was correct, as the ghost was actually an Esper with an Astral Projection ability.

    Ayu Mitsuari 

    Iruka Yumiya 

Iruka Yumiya

A student at Tokiwadai and the captain of the archery club. Her level 4 esper power, Wave Conductor, allows her to manipulate sound, light, or anything with the properties of a wave. She can amplify them and focus them to achieve a variety of effects. She's also the older sister of Rakko Yumiya, a member of the Dark Side team SCHOOL.

  • Brown Note: Iruka wins an archey competition with Junko by twanging the string of her bow and using her esper power to affect her senses, causing Junko to miss her next shot.
  • Fake Weakness: Iruka baits Junko into attacking her right side by making her think her right eye is blind, allowing her to attack Junko in the moment of confusion when she realizes her mistake.
  • Gale-Force Sound: Iruka can use her esper power on a whistle to create a sound blast.
  • Laser Blade: Iruka can use her esper power to turn a flashlight into a laser sword that can easily cut through steel beams.
  • Light 'em Up: Iruka's power allows her to manipulate, amplify and focus light. She normally uses this to turn simple tools like laser pointers into weapons by weaponizing the light they produce and turning it into lasers.
  • Peek-a-Bangs: Iruka's bangs cover her right eye. She was injured during an incident in Ideal, and uses the hair to cover up both the resulting scar and the replacement eye she got.

    The Dormitory Supervisor 

Tokiwadai Dormitory Supervisor

Voiced by: Hitomi Nabatame (Japanese) and Cynthia Cranz (English)

If there is one reason why you don't break Tokiwadai's rules, this woman is that reason. As Supervisor of Tokiwadai, it's her job to make sure the tenants don't break the rules, and she provides plenty of reason to keep them from doing so. Though a mere Level 0, her skills in "subduing" (i.e., Neck Snap) troublemakers are... effective. She can and she will find out which rules were broken, and she will always be there to administer her brand of discipline.

  • Amusing Injuries: She gives people unfortunate enough to cross her the pleasure of having their necks broken and still live to tell the tale.
  • Badass Normal: When even Level 5s cringe at the mere mention of her name, you know she always means business. On an omake segment, she was even shown taking down a group of Hound Dog commandos virtually unarmed, and in one incident scares even the normally energetic Gunha into running away.
  • Blatant Lies: When speaking to her crush, who runs an orphanage.
    Supervisor: I've never scolded my dormitory students.
  • Cannot Spit It Out: She developed a crush on her coworker Daigo, and often blushed and stammered in his presence. Kuroko and her friends encouraged her to ask him out, but he turned out to already have a girlfriend.
  • Christmas Cake: Lampshaded by Kuroko with delightful viciousness.
    Kuroko: Oh, I understand your anxiousness, esteemed Dorm Mother. To be in the latter half of your twenty-ninth year, the twilight of your eligibility for marriage, must be so unimaginably frustrating...
  • Death Glare: Her default expression, which terrifies everybody.
  • The Dreaded: To the girls of Tokiwadai.
  • Hidden Heart of Gold: She tries her very best to hide the fact that she’s a kind, gentle, and loving teacher at a kindergarten full of orphans when not administering her brand of discipline at the Dormitory.
  • I Want My Beloved to Be Happy: After Daigo revealed he already had a girlfriend, she was clearly crying inside, but smiled and congratulated the couple.
  • Knight Templar: When it comes to dorm rules.
    Supervisor: Oh I see. "Extenuating circumstances", you say? However... [grabs Kuroko, breaks her neck, and tosses her aside like a ragdoll] were I to accept that as an excuse, I would not be able to maintain the peace of this dormitory. Those who break the rules ought to be punished. Don't you agree, Misaka?

    Kinuho Wannai and Maaya Awatsuki 

Kinuho Wannai and Maaya Awatsuki
Kinuho (right) is voiced by: Haruka Tomatsu (Japanese) and Kristi Kang (English, Railgun 1/S), Amanda Gish (Railgun T)
Maaya (left) is voiced by: Yoshino Nanjo (Japanese) and Tia Ballard (English)

A pair of Level 3s in Tokiwadai's Swimming Team who hang around with Mitsuko a lot. Neither of them play a very prominent role in the series, except for one instance. Kinuho's ability is Hydro Hand (water manipulation), while Maaya's is Float Dial (buoyancy manipulation).

  • Big Damn Heroes:
    • In Railgun T, Episode 6, they show up just in time to save Kongou and Saten from Baba Yoshio.
    • They also help out in the last episode of Railgun S, along with all of Judgment.
  • The Dividual: They almost always appear together, and apart from their appearance and their abilities, they have very little differentiating them.
  • "Do It Yourself" Theme Tune: Maaya's Japanese voice actor is also the vocalist of fripSide, who performs all opening theme songs of Railgun.
  • Gravity Master: Maaya's buoyancy ability basically works like this.
  • Heart Is an Awesome Power: Maaya's ability to manipulate the buoyancy force doesn't seem too useful in combat at first, but it allows her to alter projectile motion, to make leaps In a Single Bound, to Walk on Water, and to make heavy objects lighter. She can even turn off buoyancy in a given area so that nothing can fly.
  • I Am Not Left-Handed: Kinuho pulls this off magnificently against Baba Yoshio. She can manipulate four clumps of water, but only used three until the right moment to catch Baba off guard proving she is not as naive as she seems.
  • Is This What Anger Feels Like?: Kinuho mentions in Railgun T, Episode 2 that she's never really gotten angry before and Maaya's attempt at getting angry was cute instead, but seeing Kongou getting beat up and her beliefs insulted in Episode 5 seems to have finally gotten both of them quite angry.
  • Let's Get Dangerous!: Against Baba Yoshi.
  • Let Us Never Speak of This Again: They have this reaction when they return to help clean the pool in episode 2 and find Mikoto trying to fend off Kuroko who's under the influence of her own Love Potion.
  • Making a Splash: Kinuho can control up to four clumps of water at a time, but she's not skilled enough to control water that has been scattered on the ground.
  • Mundane Utility: They offer to use their powers to help Mikoto and Kuroko clean the pool in episode 2. Its also suggested they may use their powers to help them get better times in swimming club.
  • No Names Given: Until the second episode of the first season of Railgun, the duo have no names at the time they are introduced in the manga.
  • Those Two Girls: Apart from being Kongou's clique, they do not seem to have any prominence in both Index and Railgun.
  • Water Is Womanly: Kinuho is a Level 3 Hydro Hand and a caring, girly schoolgirl who even knows a lot about swimsuits.

    Yasumi Usukinu 

Yasumi Usukinu

Voiced by: Nozomi Masu

A Level 3 first year student of Tokiwadai who appears exclusively in the Radio Drama. She is obsessed with Mikoto and eventually challenged her to a fight, believing that if she won, then Mikoto would fall in love with her (she had heard a rumor that Mikoto was attracted to people who were stronger than her, based on Mikoto constantly challenging Touma to fights). Mikoto defeated her due to unexpected outside interference and sent her off, annoyed that she found someone just like Kuroko.

  • Deer in the Headlights: She froze when a billboard broke and starting falling toward her. Mikoto had to save her.
  • Didn't See That Coming: She almost defeated Mikoto, only for a stray blast from a magician Touma had been fighting somewhere else in the city to almost hit her. This scared her out of her wits and gave Mikoto enough time to recover.
  • Man of Kryptonite: Her main ability is to emit a field that prevents electricity other than natural bio-electricity from flowing. Thus, she negated Mikoto's powers and was able to corner her. Mikoto eventually managed to generate enough electricity to overpower the field.
  • Mind over Matter: A minor component of her ability is telekinesis. She can only lift and throw relatively light objects like chairs.
  • Schoolgirl Lesbians: In love with her classmate Mikoto.
  • Stalker with a Crush: For Mikoto.
  • Too Kinky to Torture: After her defeat, she enjoys getting shocked by Mikoto, who gets annoyed that she reacts like Kuroko does to her punishments.

    Yuri Sakibasu 

Yuri Sakibasu

A Level 4 student of Tokiwadai who appears exclusively in the Railgun sidestory volumes included in the limited edition video releases of the third season of Index. She is a member Misaki's clique due to Misaki's interest in her power, Carbon Search, which allows Yuri to analyze anything with carbon in it. Mikoto encounters her due to Yuri desire to challenge Kukoro in a violin competition.

  • Achievements in Ignorance: She is capable of using magic despite being an esper, as she can use her abilities to analyse her own body and keep it from breaking down. She is ignorant of this because... well.. she has the same Weirdness Censor regarding magic as most science side characters do.
  • Magic Feather: She believed can make the best violin music since she uses an antique violin. Mikoto and her friends disagree, saying that Yuri just talented, proving it by having Yuri perform with a regular violin.
  • Magic Music: By mimicing the actions of her mother's Stativarius Tam Lin violin, Yuri was able to use her Stativarius Ainsel to invoke elemental spells, not that she actually knew she was casting magic.
  • Self-Made Man: At the age of five, she invented a trading card game that netted her and her lower-class parents incredible wealth. It was with this wealth that she was able to purchase from an auction a centuries-old violin for at least 100 million yen. Said wealth would cause issues with her mother, who felt it wasn't getting them the respect from the upper-class.

Touma's High School (unnamed)

    Aiho Yomikawa 

    Komoe Tsukuyomi 

Komoe Tsukuyomi

One of the Seven Wonders of a Certain High School

The White Smoker

Voiced by: Kimiko Koyama (Japanese) and Jad Saxton (English)

Chemistry professor of Touma's high school. She looks nowhere like a teacher, but it has been said that she's one of the older characters in the novels. She hasn't undergone the Ability Development Program, allowing her to use magic to heal Index in the first arc. She also teaches a special class to survivors of the Level Up virus in Railgun.

  • A-Cup Angst: Gets upset when she loans Index her pajamas, and the latter complains that the chest area is too small for her (herself also suffering from this trope).
  • All Girls Want Bad Boys: One of the things that she finds attractive about Touma is how he was a "naughty boy" when teaching him for the first time.
    Komoe: Well, Kamijou has been quite naughty ever since he came to the school. A lot has happened. Yes, a lot. Hee hee. Hee hee hee hee...
  • Cat Smile: In the comfort of a hot bath.
  • Chekhov's Skill: The healing spell Index taught her early on comes in handy when Aisa is nearly killed by Oriana.
  • Clock King: Mild example. She can accurately tell the exact time and date in any circumstance without having to look at a clock.
  • Color Failure: An epic one.
  • Cool Bike: She bought the Acro Bike in Volume 13 of the New Testament series, a bike designed to allow riders to backflip, ride upstairs, along walls, along ceilings, and even fly up to 30 m through the air! It's awfully handy when Touma and Mikoto are running away from the High Priest, a universe destroying Magic God.
  • Cool Teacher: All of her students love and respect her for her personality, looks, and wisdom.
  • Curtains Match the Window: Her eyes are the same color as her hair.
  • Hard-Drinking Party Girl: A chain-smoking alcoholic young girl...note 
  • Hot for Student: Towards her "Kamijou-chan".
  • Improbable Age: In-Universe — legal in age but lusted over by her Lolicon-inclined detention students.
  • Kawaiiko: Her students just can't get over how cute she is.
  • Knife Nut: In the first recreation of the world by Othinus in NT 9, Version_Alpha, she stabs Touma with a knife.
  • Locked Out of the Loop: Despite having been taught a healing spell by Index, she is unaware of the Magic Side and whenever Touma comes back from having saved the world, she scolds him for skipping school.
  • Mama Bear: During the Daihasei school festival, she defended her students against a teacher who insulted them during the Daihasei sports festival. Hearing her defense actually inspired the students to do their best to prove her right.
  • Meaningful Name: "Komoe" is a combination of "ko" (small) and "moe" (Moe).
  • The Mind Is a Plaything of the Body: Hard-Drinking Party Girl and chain-smoking aside, she tends to act in a childish manner towards her students, including having a childlike crush on Touma, in spite of being one of the older Academy City personnel, partly because she has what is essentially a body of a little girl.
  • Nice Girl
    Komoe: I got a lot of students. Some are nice, some are naughty, and some even blow big holes in my roof. But I love them all!
  • Older Than She Looks:
    • And exactly why she still looks like a kid is a mystery for the ages. When Accelerator and Last Order first meet her they immediately assume that she was involved in anti-aging experiments, which she emphatically denies.
    • In New Testament Volume 6, Mikoto refuses to believe her when she says she is a teacher, assuming she is just a kid playing pretend.
  • One of the Kids: In mentality and appearance.
  • Pink Means Feminine: Her hair, eyes, and clothing are pink. It reflects her childish, but maternal personality as a teacher.
  • Precocious Crush: Inverted. She is a teacher and has a crush on Touma, a student, though she has the body of one who would have this type of crush and her crush is pretty much this played straight, just with the roles reversed.
  • Sensei-chan: She is, after all, a teacher that looks like a child.
  • Team Mom: Appearance aside, she's the closest thing to a mother figure the children of the cast have, and a strong and nurturing one at that too.
  • The Unreveal: She drives a normal-sized car. When Touma gets confused at how she is able to drive it when her legs are too short to reach the pedals, she just snaps at him for doubting her ability instead of explaining how. In the movie, her car is shown having support devices typically used by the disabled to reach all the controls.
  • You Gotta Have Blue Hair: She has pink hair.

    Suama Oyafune 

Suama Oyafune

Voiced by: Yumi Hara (Japanese), Natalie Hoover (English)

A math teacher at Touma's school and the daughter of Monaka Oyafune, a member of Academy City's Board of Directors.

  • Berserk Button: Getting caught in "unfortunate" situations, especially involving Touma.
  • The Fashionista: Collects high-quality clothes in an effort to improve her looks.
  • Hot Teacher: Despite what she thinks, people do find her attractive.
  • I Am Not Pretty: Despite other people's positive reactions to her looks, she doesn't believe so.
  • Mad Scientist's Beautiful Daughter: Although her mother is rather nice, she is still one of Academy City's directors, which has a hand in everything going on in Academy City.
  • Meganekko: As shown in the picture.

    Touma Kamijou 

    Motoharu Tsuchimikado 

Motoharu Tsuchimikado

    Pierce Aogami 

Pierce Aogami

Voiced by: Yoshihisa Kawahara (Japanese) and Scott Freeman (Season 1 & 2), Patrick McAlister (Season 3) (English)

Touma's friend and classmate whose real name is unknown. A funny individual who tends to notice his bad luck, and calls him "Kami-yan" in a different way. He is a self-confessed pervert, lolicon, and masochist who enjoys being punished by his teacher, Tsukuyomi. He is always seen with Motoharu. He, Motoharu, and Touma are known as the three idiots in their class as they have the lowest test scores.

    Aisa Himegami 

Aisa Himegami

Deep Blood

Voiced by: Mamiko Noto (Japanese) and Lindsay Seidel (English)

A Japanese Christian with a Miko attire formerly from Kirigaoka Girls' Academy. She possesses the ability to kill vampires with her blood, which also attracts them. This power also killed her friends and family after being turned into vampires, prompting her to look for a way to remove her abilities.

She is a naturally occurring esper, which is called a gemstone.

  • A-Cup Angst: Subverted. Aisa is a C-cup but considers it puny and wanted to have bust size like Seiri's, which aggravates Mikoto who is viewing her dream via an Indian Poker.
  • Back from the Dead: Aureolus Izzard killed her with his reality warping powers, but Touma reversed the effect with Imagine Breaker.
  • Big Eater: She keeps her slim figure despite wolfing down burger after burger.
  • Bloody Murder: Her blood is highly toxic to vampires.
  • Born Winner: Being a gemstone, she was born with her power. She certainly doesn't consider herself a winner.
  • Cloudcuckoolander: She has her moments, such as trying to kill the fleas on Sphynx with insecticide or telling a corny horror story.
  • Dark and Troubled Past: She got her entire family and all of her friends killed, but doesn't seem to be bothered too much about it now.
  • Demoted to Extra: Even though she "lived with Touma" before moving to Komoe's apartment, her participation in the narrative becomes virtually non-existent past Episode 15, as cheekily pointed out in the DVD extras.
    Aisa: I'm ignored... therefore I a— [cuts to next scene before she could finish her sentence]
  • Hime Cut: A classic example of the "straight bangs and long hair down the back" and wears Miko attire, but she insists that she's a magician/esper instead. For bonus points, if written with different characters her surname can be read as "Princess Hair."
  • I Just Want to Be Special: She seems to have an inferiority complex, and wants to stand out. Aureolus Izzard taught her a little about magic, and she regrets not being able to use it due to being an esper. After all, her esper power is useless in a fight.
  • New Transfer Student: She went from Kirigaoka Girls' Academy to A Certain High School.
  • Nuns Are Mikos: Played straighter than usual, as she's a Christian who only dresses like a Miko.
  • Odd Friendship: With Maika Tsuchimikado.
  • Power Incontinence: She has no control over her ability without her cross.
  • Power Nullifier: The cross on her chest blocks her vampire attraction abilities.
  • The Quiet One: If she does talk, it's usually very brief.
  • Rapunzel Hair: Comes past her knees.
  • Sailor Fuku: The school uniform.
  • Too Spicy for Yog-Sothoth: Her blood will kill any vampire that drinks it, but that doesn't stop them from trying to take a sip.
  • Trademark Favorite Food: Burgers.
  • Vampire Hunter: Subverted Trope. While her blood is toxic to vampires, it also attracts them to her, and she would rather be left alone by those beings altogether.
  • Victim of the Week: After an ill-fated encounter with Oriana. Fortunately, she lives.

    Seiri Fukiyose 

Seiri Fukiyose

Voiced by: Ayumi Fujimura (Japanese), Skyler McIntosh (English)

A member of Touma's class. She's very responsible, health-conscious and clean. Basically everything Touma is not. Is the only girl not to fall for Touma's "charms"... except it's implied she might have already.

  • Accidental Pervert: Once walked in on Touma when he was changing.
  • Adaptational Curves: In the novels she is described as a "pleasant looking girl without a shred of feminine sex appeal". In the anime, on the other hand, she is quite a beauty, with a bust that could give Kaori a run for her money. The light novels ended up adopting this, as shown in the illustrations for Volumes 9 and 10.
  • Adapted Out: As a result of her seiyuu taking a leave of absence, Fukiyose's cameos in Railgun T gets replaced by a character or in one case, a scene involving her gets replaced entirely with a different one.
  • Almost Kiss: With Touma, due to someone accidentally pushing his face into hers.
  • Berserk Button: She hates it when Touma or anyone else complains about bad luck. To her, luck is just a loser's excuse when they don't want to work hard and take responsibility for their mistakes. She's completely unaware that Touma's bad luck is real.
  • Class Representative: Subverted. Despite having all the classic characteristics, she's not the class representative.
  • D-Cup Distress: She buys shoulder massage devices to relieve the strain of her large bust.
  • Forehead of Doom: Her "Forehead Deluxe".
  • Gainaxing: Featured prominently in the season 2 OP, along with a number of her appearances in the show.
  • In-Series Nickname: "Iron Wall Girl", because she's the only girl in the class that seems to be "immune" to Touma's charms.
  • Locked Out of the Loop: Doesn't know about Touma's adventures and the Magic Side.
  • Ms. Fanservice: Played as such in the anime.
  • Not So Above It All: Despite her constant chastising the "Delta Force" over their stupid antics, she occasionally finds herself getting dragged alongside their stupidity.
  • Panty Shot: In one of Volume 14's illustrations.
  • Sailor Fuku: Her normal school attire.
  • Sexy Soaked Shirt: Gets splattered by water from a busted hose that ends up giving her this for Touma to see up close, but surprisingly she doesn't attack him for this since he was smart enough not to point it out to her given her already-irritable state.
  • Sugar-and-Ice Personality: A caring mother figure to her classmates beneath her impassive facade.
  • Team Mom: To her class of underachieving misfits.
  • Trademark Favorite Food: Health products from TV shopping channels. This also includes the infamous Musashino Full-Cream Milk introduced in Railgun. No wonder she developed so nicely...
  • Tranquil Fury: She doesn't become openly angry with Touma's "unfortunate" actions.
  • Tsundere: Towards Touma.
  • Use Your Head: Her favorite way of punishing Touma whenever he does or says something that annoys her.

    Seria Kumokawa 

Seria Kumokawa

Voiced by: Yukiyo Fujii (Japanese)

A mysterious senpai in Touma's school, Seria has connections to one of the Board of Directors for the whole of Academy City. Both her motives, and the extent of her knowledge is unknown, but she seems to love the carefree life of a high school student. May or may not be in love with Touma.

  • A Day in the Limelight: One of the short stories from one of Kiyotaka Haimura's art books, where she uses a love letter to Touma to catch a spy.
  • Angst Coma: While not literally in coma, she became extremely lethargic and refused to work, just staring blankly, after Touma's "death".
  • Awesomeness by Analysis: Her fighting style. This includes being able to dodge gunfire while walking at a leisurely pace by reading the angle of the gun.
  • Battle of Wits: Kaziumi points out that these are fights that even Touma can't fight. Which is why Touma can do a lot of things they can't.
  • Becoming the Mask: She chose to live a school life, as Touma's senpai, along with her Board work. She liked it.
  • Clingy Jealous Girl: When Touma gets Fake love letter from High Priest thinking that it's the real deal, she is pissed.
  • Didn't See That Coming: She beat Tsuchimikado down with ease... until he started using magic, which she has no knowledge of.
  • Eye Scream: Lost an eye in a battle with Tsuchimikado. She later gets a replacement.
  • The Man Behind the Man: The previously mentioned Board member refers to her as his 'brain'.
  • Locked Out of the Loop: She has great knowledge of Academy City's Dark Side, but is completely unaware of the Magic Side.
  • Love Makes You Dumb: She used to be confident and brilliant. Then Touma "died". She then spent her time "blankly sitting around like an idiot" until he came back. She's still depressed that she couldn't help during WWIII though.
  • Love Letter Lunacy: Invokes this in her A Day in the Limelight short story.
  • Master of Your Domain: Can use autohypnosis to block out pain from injuries including having an eye removed.
  • Out-of-Character Moment: Her calling Touma in to save her during New Testament 7 while under the effects of Agitate Halation.
  • The Rival: To Misaki Shokuhou. Both are regarded by people as high-class beauties. Both are experts at manipulating the mind, Misaki via her power, and Seria via pure manipulation and guile. Both are extremely wary of one another, keeping tabs on one another (Misaki via mind controlled 3rd parties, and Seria via surveillance technologies) leading to a sort of cold war between the two, with the knowledge of both sides that should conflict break out between the two, it would only lead to a mutually assured destruction. The ONLY time the two can even put things aside and work together is if it concerns Touma, because both of them love him and doesn't want the other to get a head start on the other.
  • Secret Keeper: She's one of the few people who knows about Touma's memory loss.
  • Sempai/Kohai: Sempai to Touma. A role she quite enjoys.
  • Smug Snake: Though not a bad guy. Probably.
  • Teen Genius: Said to be one, being the brain of a Board member and all.
  • Tsundere: Subverted. She hates Misaki, but agrees to help her when she brings up Touma. When she finishes clearing Misaki of a hidden bug and gives her advice, she warns her to be careful. She wouldn't care or anything, but says Touma wouldn't be able to handle it if she died. Now, here's where the subversion comes in: She absolutely means it. She doesn't care much about Misaki, but knows that Touma failed to save another girl once and it apparently left him absolutely broken up inside, though he managed to hide it from Misaki at the time. Seria doesn't want him to have to go through that again.

Sakugawa Middle School

    Kazari Uiharu 

    Ruiko Saten 

    Fuuga Sakurazaka 

Fuuga Sakurazaka

    Erii Haruue 

Erii Haruue
Voiced by: Kana Hanazawa (Japanese) and Carrie Savage (English)

A Child Error featured in the final arc of Railgun season 1. She is a Level 2 Esper and a telepath. She gets transferred to Sakugawa Middle School and becomes Uiharu's roommate.

  • Canon Immigrant: She's referred to in passing near the start of the Sisters arc in the manga, though she doesn't actually appear at that time.
  • Chekhov's Gunman: Appears three episodes before she has any bearing on the plot.
  • Cloudcuckoolander: Has a tendency to suddenly space out. Her comatose friend telepathically contacting her was the cause of some of this, but not all.
  • Parental Abandonment: She's a Child Error, meaning she was dumped in Academy City by parents who then failed to pay her tuition or retrieve her.
  • Red Herring: She's unable to cause the Poltergeist incidents on her own.
  • Telepathy: A weaker version, in that she's primarily a receiver, and can't really do anything useful on her own. At least, not under normal circumstances.
  • What Happened to the Mouse?: She and Banri did not appear in Railgun T. Even the four main girls seem to forget them.

    Banri Edasaki 

Banri Edasaki
Voiced by: Satomi Sato (Japanese) and Luci Christian (English)

A Child Error and childhood friend of Erii. She is a telepath, similar to Erii, but her level is unknown. She eventually ends up in the care of Kiyama Harumi as a student.

  • Chekhov's Gunman: First appears in Kiyama Harumi's flashbacks.
  • Chekhov M.I.A.: Due to her (and the other Child Errors) attempting to wake up from being comatose, the Poltergeists occur in the city.
  • Comatose Canary: Due to her ability, she was crying out to Erii every time Kiyama tried to wake her from her coma.
  • Expy: Possibly one of Ritsu Tainaka. They not only look alike, they even have the same voice actress!
  • Telepathy: Like Erii, she's pretty weak, and can usually only communicate with specific people.
  • What Happened to the Mouse?: She and Erii did not appear in Railgun T. Even the four main girls seem to forget them.



Voiced by: Junji Majima (Japanese) and Eric Vale (English)

He's Uiharu and Saten's teacher at Sakugawa Middle School, as well as a volunteer caretaker at Cypress Park who cares for the Child Errors.

  • Innocently Insensitive: He broke the Tokiwadai Dorm Supervisor's heart and didn't even notice.
  • Likes Older Women: His girlfriend and later fiance Kazuko Shigenomori is much older than him. He also had a positive reaction to seeing the Tokiwadai Dorm Supervisor all dressed up.
  • Oblivious to Love: He did not pick up on the Tokiwadai Dorm Supervisor's very obvious crush on him, though this may be because he had been seeing Kazuko the whole time.
  • Official Couple: With Kazuko. He eventually proposes to her.
  • Only One Name: Everybody just calls him Daigo.
  • Supreme Chef: He even says cooking is his favorite hobby.

Kirigaoka Girls' Academy

    Awaki Musujime 

    Hyouka Kazakiri 

    Mitori Kouzaku 

Nagatenjouki Academy

    Haruki Aritomi 

Haruki Aritomi

Voiced by: Junji Majima (Japanese), J. Michael Tatum (English)

An anime-exclusive character. He was a student at Nagatenjouki Academy, who dropped out prior to the events of the Silent Party story arc. He is the leader of an organization called STUDY (aka the STUDY Corporation), which seeks to prove technology is superior to esper powers.

  • Adjusting Your Glasses: Does this a lot.
  • Better to Die than Be Killed: When STUDY is defeated, he launches a missile at Academy City in a last-ditch effort at revenge, then attempts to shoot himself in the head so he won't experience the explosion. Mikoto stops him from killing himself, saying he has to face justice for his actions, then the heroes stop the missile. He and his cohorts are arrested.
  • Big Bad Wannabe: He sees himself and his group as one of the most powerful factions in Academy City, who will revolutionize the world with their technology. They...are not. His master plan involves five researchers using an Artificial Human and a whole lot of robots. The arc immediately preceding his involved countless researchers using twenty thousand Artificial Humans note  and enough money to bankrupt a nation, and was just a mid-level plan in Aleister's ongoing one-man Gambit Pileup. No wonder Gensei Kihara referred to the whole thing as "summer arts and crafts."
  • Fantastic Racism: Hates espers. See Recognition Failure.
    Haruki: Those who rely on their powers are powerless!
  • Far East Asian Terrorists: Is one with STUDY near the end of Railgun S when he attempts to attack Academy City with a live missile.
  • I Lied: Promised to give Mikoto the formula for the lollipops Febri needs to survive if she and Nunotaba did what he asked, then callously stomped the flash drive containing the data to dust.
  • Jerkass: After Mitsuko Kongou flawlessly took down a purse snatcher, he comes out and causes the cheering crowd to turn against her, using the Probability Fallacy to imply she could have killed or severely injured a bystander if luck was not on her side. As Mitsuko sinks into self-doubt, he walks away and smirks.
  • Mad Scientist: Sends robots to attack espers and gather data on them, referring to the fights as experiments.
  • Meaningful Name: His first name means "springtime tree" and his last name means "having an abundance of something".
  • Never Be a Hero: Criticizes espers who fight crime, arguing that they just throw their powers around to show off and could hurt someone in the crossfire.
  • Recognition Failure: He's won several awards in national science competitions, but hardly anybody knows who he is because espers overshadow regular people in terms of fame. This is one reason why he hates espers.
  • Smug Snake: He's very intelligent, but he overestimates himself and his robots and underestimates his foes. He manipulated the legal system to take out Anti-Skill, but did not expect Judgment to step in. He screwed with Shizuri Mugino, and did not expect her to show up seeking revenge.
  • Start of Darkness: He was once an idealistic young researcher, until he learned how much discrimination non-espers face in Academy City. The final straw was when he overheard his idol, Gensei Kihara, whom he thought understood him, badmouthing him for his anti-esper ideals.
  • Underestimating Badassery:
    • He vastly underestimates level 5's in general, and Mikoto specifically. He thinks that the trouble she had with his non-electrical robot meant it was too strong for her, when in reality she was holding back because she thought it had a person inside. Once she realizes they're just drones, the next time she fights dozens of them at once she just cuts loose and slaughters them en masse without issue, while carrying Febri on her back even.
    • In episode 23, he has Mikoto injected with a paralytic that cuts off her nerve functions below the neck, and doesn't even bother guarding her, since it will be in effect for hours. But she's an electromaster, so she just uses her powers to take manual control of her body.
  • Villain with Good Publicity: Is extremely charismatic, to the point that he can criticize someone who just saved the day and get the crowd on his side.
  • Would Hit a Girl/Would Hurt a Child: Doesn't care who his experiments hurt. Later, he beats up Shinobu Nunotaba and gives her a black eye.


    Mio Aizono 

    Shinobu Nunotaba 

    Asako Jounan 


    Miho Jufuku 

Miho Jufuku

Voiced by: Yukari Tamura (Japanese) and Leah Clark (English)

An anime-exclusive character. A student from Sekishi Junior High School who took Level Upper, enhancing her ability, Dummy Check.

  • Because You Were Nice to Me: She starts courting Saten after Saten mentions that her eyebrows are "unique" rather than ugly.
  • Big Ol' Eyebrows: She is very ashamed of them. Her ex-boyfriend said they were ugly when he dumped her. However, Saten finds them quite cute, calling them her "charm point."
  • Cannot Spit It Out: Does a lot of blushing and stammering around Saten.
  • Disproportionate Retribution: A Tokiwadai student stole her boyfriend, so in response, she regularly ambushed Tokiwadai students, knocked them unconscious with a stun gun, and drew Big Ol' Eyebrows on them.
  • Face Doodling: See Disproportionate Retribution.
  • Failed a Spot Check: Inflicts it on other people. Dummy Check makes it very difficult for people to notice her. It doesn't work against mechanical surveillance, and her reflection still appears in mirrors.
  • Heel–Face Turn: After Saten decides to befriend her. They become regular pen-pals during her prison sentence and consistently after.
  • Laser-Guided Amnesia: When Dummy Check was enhanced by Level Upper, this allowed her to erase the short-term memories of anybody who manages to notice her.
  • Odango Hair: She wears her hair in two cute buns.
  • Peek-a-Bangs: Her bangs almost completely cover her left eye.
  • Perception Filter: Basically how Dummy Check works. It removes her from people's senses.
  • Personality Powers: She was very shy and rarely spoke up, and she gained the ability to effectively be invisible.
  • Shrinking Violet: Before she was powered up by Level Upper.
  • Stealth Expert: Thanks to Dummy Check.

    Hatsuya Kaitabi 

Hatsuya Kaitabi

Voiced by: Hirofumi Nojima (Japanese) and Josh Grelle (English)

A geek who had been frequently bullied. Desiring revenge, he took Level Upper, gained the ability Synchrotron, and used it to terrorize Academy City as the Graviton Bomber.

  • Complaining About Rescues They Don't Like: Mikoto saved him from some bullies once, but he rudely brushed her off, asking why she didn't save him sooner.
  • Disproportionate Retribution: He hated everyone, especially Judgment, because seemingly nobody helped him when he was bullied. He then tried to blow everybody up.
  • Far East Asian Terrorists: Of the anti-Judgment variety since they didn't do anything to take down bullies.
  • Having a Blast: Synchrotron allows him to accelerate gravitons (the particle that mediates the force of gravitation) in aluminum until it explodes. The larger the piece of aluminum, the more powerful the explosion.
  • Headphones Equal Isolation: Before his official debut, he is often shown in the background wandering aimlessly while listening to earphones. It turns out he was taking Level Upper at this time.
  • I Just Want to Be Special: He wanted power, both to get revenge on his bullies and because he was jealous of people with powers.
  • Squishy Wizard: For all the power he gained, he's still a wimpy geek. To prove a point, Mikoto takes him down with a single, non-electrified punch.
  • Villainous Breakdown: He panics when Touma blocks the aluminum bomb he put in a child's toy, meaning he failed to kill anyone. Doing so confirms that he is the bomber.
    Hatsuya Kaitabi: Th-that's impossible! That was my maximum power!
  • Would Hurt a Child: During his rampage, he would sneak aluminum everywhere and then detonate them. He was fond of putting the aluminum in children's toys and distributing the toys.

    Shaei Miyama 

Shaei Miyama

Voiced by: Mayu Mineda (Japanese)

A young boy from Matsuume Elementary School introduced in the Dream Ranker arc of the Railgun manga. His unnamed esper ability grants him limited precognition, but unfortunately the only things he can see are horrible accidents.

  • Blessed With Suck: Precognition isn’t so cool when the only thing you can see are other people getting hurt.
  • Bully Magnet: Shaei's power caused him to be bullied and picked on at school.
  • Cassandra Did It: Other children believed he was causing accidents rather than simply predicting them.
  • Heroic RRoD: Use of his power causes Shaei severe stress and results in anemia and nosebleeds. Extensive use can even leave him bedridden.
  • Intergenerational Friendship: With Kuroko.
  • Magical Camera: Shaei can’t show other people his predictions without focusing his power through a camera. The resulting photograph, when read by a special machine, produces a blurry image of the scene of the accident.
  • You Can't Fight Fate: It’s not possible to prevent the accidents Shaei predicts by normal means. Trying to do so usually only results in the victim getting hurt somewhere else. This was one of the reasons he uploaded his photographs to the Treasure Hunter App, in the hopes that someone could figure out a way to stop them. Ultimately subverted when it turns out that teleporting the victim away can break the scenario.


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