A page for those associated with the science side of Academy City who do not fall into easy categories like researchers or students.
The first leader of Skill-Out introduced in Volume SS1. After he was killed, Shiage Hamazura took over before passing the role to Hanzou Hattori.
- Authority Equals Asskicking: He's one of the best fighters in Skill-Out.
- Badass Normal: Is able to match a Level 4 esper in combat.
- Badass Pacifist: He hates conflict, but...
- Big Brother Instinct: His reason for taking the leadership of Skill-Out is revealed to be this.
- Combat Pragmatist: Jams Accelerator's connection with the MISAKA Network with the Chaff Seeds before fighting him.
- Genius Bruiser: Looks like a muscle-brained gorilla at first, but is actually pretty damn smart.
- Honor Before Reason: Prohibits Skill-Out members from associating themselves with prostitution even if it's the fastest way to gather funds.
- Large and in Charge: He's built like a tank and very tall.
- Never Hurt an Innocent: Under his leadership, Skill-Out's targets are only espers who misuse their powers.
- Papa Wolf: To Fremea Seivelun during the brief time they knew each other.
- Powered Armor: Hard Taping, a military grade armor which strengthens the body and provides speed, at the cost of muscle strain.
- Suicide by Cop: He killed himself by firing at Accelerator knowing that the bullet would rebound into him. He knew that he had no future, and correctly predicted that Accelerator would take over his role as protector of the innocent.
- Would Hit a Girl: Fought Awaki and almost killed her before Accelerator intervened.
The current leader of Skill-Out, and a former ninja.
- Adapted Out: He doesn't appear in the anime adaptation of the Battle Royale Arc to give the lady's handgun to Shiage that he uses to shoot Mugino. Instead, Shiage just carries a second gun up his left sleeve to compliment his other gun up his right.
- Amazon Chaser: Has a major crush on Aiho Yomikawa after she arrested him, based on both her looks and her incredible strength and fighting skills.
- Chekhov's Gun: A literal gun (a lady's handgun) which he gives to Shiage in the light novel. Shiage uses it later to defeat Mugino.
- Highly Visible Ninja: He defies this notion, saying that it's better for ninjas to just hide in the flow of history rather than being in the open.
- Meaningful Name/Named After Somebody Famous: Hanzou Hattori is the name of a ninja from the Sengoku period.
- Papa Wolf: After Fremea gets taken by Umidori he gets really pissed.
Wataru is a character introduced in the A Certain Scientific Railgun anime. He is a Skill-Out member and is the founder and former leader of one of the largest Skill-Out factions, Big Spider.
- Badass Normal: To the point another Skill-Out says that fighting skills are to Wataru what esper powers are to an Ability User.
- Berserk Button:
- "You're hitting girls? That is not cool."
- He'll also kick your ass if you make him drop his milk.
- Big Brother Mentor: To Mii Konori, who he sees as a surrogate little-sister. For Mii's part, she wishes it were something more...
- Blood Knight: He comments that he wishes the bad guys he defeats were better fighters so that his fights wouldn't be so boring.
- Chivalrous Pervert: The rare anime male that can sincerely make comments about a girl's figure without causing offense.Kuroko: A gentleman talking about my chest?
Mikoto: In a strangely unperverted manner...
- Face of a Thug: Averted; in spite of being the singular most badass Level Zero in Academy City, he has easily the kindest and gentlest appearance of all the males in the franchise, Touma included.
- First Love: For Mii Konori.
- Honor Before Reason: After taking down the now corrupt Big Spider and proving himself a hero, he turns himself in to the police, just because he used to be a criminal.
- Nice Guy: If he's not fighting you, he's one of the warmest, most tender souls.
- One-Man Army: Stands out in Academy City for being a real Level 0 (unlike Touma) who is able to neutralize dozens of armed combatants, including those with firearms, with his Martial Arts abilities alone. It's quite likely that it's through his tutelage that Mii is such a formidable Martial Artist herself.
- Put on a Bus: Literally, to jail. Do note though that he and Mii parted on very good terms.
- Tattooed Crook: Subverted; his tattoo, which is badge of his loyalty to Big-Spider, does not stop him from being a kind gentleman and absolute sweetheart.
- Trademark Favorite Food: Musashino-brand milk.
- Wife-Basher Basher: Plays it straighter than Touma.
A man who took over the Skill-Out faction Big Spider after Wataru was seemingly killed.
- Bad Boss: Berates and beats up his men for every mistake, and even shoots them in the back.
- Combat Pragmatist: Uses guns, knives, dynamite, Capacity Down, you name it.
- Decapitated Army: Big Spider is disbanded after his defeat.
- Dirty Coward: When the odds are against him, he quickly panics, uses his men as shields, etc.
- Fallen Hero: Under Wataru's leadership, Big Spider was merely an organization that protected Level 0s. Hebitani quickly turned it into a rabid gang out to kill all espers after surviving a kidnapping attempt by a rival gang that left Wataru supposedly killed in a bombing attack.
- Hell-Bent for Leather: Wears the typical black leather jacket.
- Hero-Worshipper: In his younger years, back when he wasn't corrupt, he deeply admired Wataru.
- Identity Impersonator: Pretends to be Wataru Kurozuma, tarnishing Wataru's reputation.
- Jerkass: A really unpleasant guy to say the least.
- Taking You with Me: As a last ditch effort, he reveals he's wearing a vest of dynamite and tries to detonate it. Wataru knocks him out at the last second.
- Tattooed Crook: Has a spider tattoo like Wataru.
- Would Hit a Girl: After disabling Mikoto and Kuroko with Capacity Down, he viciously beats them up before Wataru saves them.
The leader of a gang of delinquents who use Level Upper and push it on others.
- The Aggressive Drug Dealer: Sells Level Upper to people for high prices, and brutalizes them if they try to refuse or can't pay.
- Charles Atlas Superpower: He can make a crater in a concrete wall with a single kick. He later kicks Kuroko hard enough to launch her through a wall.
- Gonk: Look at his eyes and nose.
- Master of Illusion: His ability, Trick Art, lets him bend light to make people see him in a different place than he actually is. This makes enemy attacks miss and his attacks hard to avoid.
- No Name Given: He's referred to as Trick because of his ability.
- Smug Snake: One of many who believed his ability makes him invincible.
- Villainous Breakdown: Completely loses it when Kuroko brings a building down on him, then saves him at the last second. He immediately surrenders, begging for his life.
- Would Hit a Girl: Viciously beats up Saten and then fights Kuroko intending to kill her.
The main villain of the Jailbreaker Arc in the Railgun manga. Kimi is an esper incarcerated in a private juvenile hall for crimes yet established, and is able to escape thanks to her comrades under the guise of the mock jailbreak trial. She wields a strange power in her right hand...
- Affably Evil: She seems to have a pretty chummy nature, having a nice conversation with Uiharu, joking around with her subordinates and even telling Mikoto she just wants to borrow Uiharu for a little job before returning her safe and sound. She also didn't hesitate to use her dragon on two innocent guards to ensure her escape and test it out, though it's a little ambiguous if she actually killed them.
- Arc Villain: Of the Jailbreaker Arc.
- Batman Gambit: The mock jailbreak trial wasn't just to let her escape prison, it was also to find a skilled hacker that could fulfill whatever plans she has after escaping. And Uiharu did both.
- Fangs Are Evil: Has noticeably developed teeth, and is the Arc Villain of the Jailbreaker Arc.
- Locked Out of the Loop: She was apparently so apathetic to listening to gossip during her imprisonment that not only is she surprised to learn Mikoto is the #3 Level 5, but that there now seven Level 5s since her incarceration.
- Our Dragons Are Different: Can summon a vaguely angelic-looking dragon with her right hand to attack others and defend herself. It's identical to one of the eight dragons that emerged from Touma's right arm to stop Mikoto's Level 6 Shift, something Mikoto recognizes. She indicates it's a rather new ability she didn't have before being imprisoned and it can be negated by Capacity Down, however.
- Red Right Hand: The angelic dragon has warped her right arm significantly. While the first glimpse of her uncovered arm shadows out the full details, it does show it now has noticeable wing-growths (including starting to replace two of her fingers) and multiple eyes running along the arm.
A member of Kimi's group, she inflitrated the private juvenile hall Kimi is being held and climbed to the top as the Director Kyougoku Ryouta's assistant and Chief of Security to facilitate her escape.
- Agent Scully: She's skeptical of fantastic concepts like dragons or ninjas, thinking that Kimi and Tsurigane's talk of both are childish delusions, and is quite surprised to find that both exist.
- Deadpan Snarker: Be it at Ryouta's vanity and arrogance or her teammates' childish antics, Aohoshi maintains a stoic face and biting snark.
- Master Actor: Keeps up the facade of a loyal (if snarky) member of the juvenile hall staff until quite literally the moment Ryouta puts two and two together to realize the only way Kimi could have replaced the fake prisoner would be if someone high enough on the command chain (such as a Chief of Security) allowed it to happen.
- Wardens Are Evil: She became a member of the juvenile hall staff specifically to free Kimi.
A member of Kimi's group, she's a former member of Shuri Oumi's Kouga School of Ninjutsu who betrayed the group sometime ago but continued to uphold the appearance of loyalty. She has an Esper ability that allows her to sense other Esper's AIM fields and predict their moments based on it.
- Combat Clairvoyance: After spending years honing her Esper ability, she can predict how enemy Espers' powers are being used based on fluctuations in their AIM fields from their calculations. For example, she can predict Kuroko's coordinates before she actually teleports. However, she's still vulnerable to feints and fake outs, as Kuroko is able to get a good hit in by preparing to teleport but instead using a rock, which Tsurigane blocks but doesn't have time to react to Kuroko using that hesitation and surprise to teleport behind her and club her with a tree branch.
- Dark and Troubled Past: According to her, her earliest memory in life is running away in fear and despair from wild dogs trying to kill and eat her.
- Empowered Badass Normal: She has an Esper ability and training as a ninja. At one point during her fight with Kuroko, she's able to run up a tree trunk and jump between multiple trees so fast Kuroko is left in disbelief that she's not using an Esper ability and it's all basic athletic ability.
- Graceful Loser: When she realizes Kuroko has managed to cut her with her own poisoned weapon Tsurigane uses the few seconds she has before being completely paralyzed to bow and say she's sorry for having said she would easily take care of Kuroko at the start of their fight.
- Highly Visible Ninja: Averted; her normal wear is just a good old-fashioned schoolgirl uniform.
- Hoist by Her Own Petard: She's ultimately defeated by Kuroko getting her hands on her paralyzing knife and slicing her with it.
- In Love with Your Carnage: She fell in love with her teacher Shuri slaughtering a bunch of wild dogs to save her life. Note it was the slaughter that she found beautiful, not the life-saving.
- Master Actor: Fools all of her fellow ninja into believing she's a loyal, if incompetent, member that managed to sprain an ankle until she's all alone with Shuri and pulls out her blade for the kill.
- Nightmare Fetishist: She was so enraptured by Shuri slaughtering wild dogs to save her life that she wants to die getting decapitated by Shuri in the same manner so she can see her headless body in her final moments.
- Obfuscating Stupidity: She acts clumsy and incompetent around her older colleagues during the mock jailbreak trial, but she's actually dangerously skilled at what she does, to the point she could fight Shuri on even footing (albeit taking her by surprise at first).
- Poisoned Weapons: She coats her blade with a special numbing agent that paralyzes her foes. She notes it's not fatal unless they end up blocking their windpipe in falling, but that doesn't matter when she can just finish them at her leisure.
- Rogue Agent: She originally entered Academy City under the disguise of a Child Error for the Kouga School 10 years ago, but eventually she joined up with Kimi's group and transferred her loyalties to her. Although she admits she only really joined Kimi because it was convenient and their goals just happened to be mutually achievable if they worked together.
- Sensor Character: Her Esper ability allows her to detect the usually-unreadable AIM fields of other Espers and sense fluctuations within them.
- Suicide by Cop: She betrayed her fellow ninjas specifically because she wants them to send someone after her to kill her, preferably by decapitation, so she can get A Good Way to Die. In the end, however, Shuri decides to simply excommunicate her and leave her fate up to Academy City.
- Wounded Gazelle Gambit: Fakes a sprained ankle to get Shuri's guard down and attack her.
A member of Kimi's group, she hides her darker nature behind a bumbling facade.
- Attack Reflector: Her unnamed Esper ability allows her to change the trajectory of projectiles in a manner that Mikoto can't help but compare to Accelerator's own Vector Manipulation, despite noting there aren't any Level 3s or 4s with that same power registered in Academy City's database. In reality, she's a Gravity Master who manipulates her own personal gravity to make objects in motion orbit around her before flinging them back.
- Awesome by Analysis: During the fight with Mikoto, she mentally judges the probability of potential success between potential courses of action constantly in order to take the option with the best chance of success.
- Bitch in Sheep's Clothing: Acts helpless and cowardly, but in reality she harbors a deep sense of "malice" and leaves Yamashiro Shoubu bloody in an alleyway when he reveals he sees through her facade with his ability. Mikoto figures out pretty quick when she's "taken hostage" it's an act by noting the hostage taker seems more afraid of Raifu than her.
- Combat Pragmatist: Uses every edge she can to defeat Mikoto, from taking a hostage, trying to kill her with car traps, setting fire to buildings and alerting Academy City security drones to force Six-Wings helicopters to come in and attack herself and Mikoto, and refusing to indulge in Explaining Your Power to the Enemy to keep Mikoto from figuring out her power until it's too late.
- Confusion Fu: Her fighting style is built around using hidden weapons and keeping her Esper abilities secret to prevent her foes from figuring her out before she takes them down.
- Defiant to the End: Even as she realizes her chances of defeating Mikoto are only 0.03% after being shocked with enough electricity to leave her body numb and unable to use her ability, she still lunges at her desperately to try and win. Mikoto kicks her in the head and shoots her with another blast of electricity to put a stop to that.
- Gravity Master: Her true Esper power, which allows her to orbit objects in motion around her and send them back in a manner similar to an Attack Reflector. She can even bend light to divert an opponent's aim. However, an object with sufficient mass or velocity being sent right at her can break through her gravitational field, which is why she doesn't stand directly in front of Mikoto's Railgun but off to the side so she can bend its orbit towards and around her.
- Hand-Hiding Sleeves: Wears a top with baggy sleeves to achieve this effect. They hide her Wolverine Claws.
- Hero Killer: While she doesn't kill them, she professes a love of fighting those who call themselves heroes and defeating them to prove they're just "fakers" who don't have the strength to uphold justice.
- Humans Are Bastards: She believes humans would be evil if they were true to their desires and impulses, and can't understand "heroes who fight to protect everyone".
- Killer Rabbit: Despite her youthful looks and cowardly act, she defeats Yamashiro Shoubu, a guy who could defeat security robots with a wooden sword, by herself and leaves him bloody in an alleyway with no apparent injuries to herself. Her job during the mock trial was to take out any powerful non-hacker competitors to ensure they wouldn't reach Kimi first. She also comes dangerously close to taking Mikoto out in their clash.
- Laser-Guided Karma: She's a Confusion Fu expert who delights in clashing with "heroes" to test their resolve and break them. She's defeated by Mikoto tricking her with an iron sand dummy and blasting her with electricity, who notes she's not a hero like that "huge idiot" who saves everyone, even villains like Raifu, when she herself can barely protect her loved ones.
- Takes One to Kill One: She notes that to defeat a Level 5 one needs a Level 5's power as she redirects Mikoto's Railgun that she used to destroy a Six-Wings right back at her with the intent to kill. It only fails because Mikoto realized Raifu was baiting her into firing her Railgun and lowered the attack power before firing, which gave her time to dodge the redirected attack.
- Wolverine Claws: Wears long claws on her fingers that she hides her sleeves for close combat.
A mysterious entity whose identity is unknown, except for the fact that it is the former mentor of Aleister Crowley and the one who provided him the knowledge to write the Book of Law. Its existence is a top-secret even among the directors of Academy City, codenamed DRAGON. It resides in Aleister's stronghold within the Windowless Building, and like its former student is one of the most powerful entities currently introduced in the story.
- Above Good and Evil: Declares that it doesn't care about morality, only about observing interesting things.
- Always a Bigger Fish: For a while, Aiwass was thought to be the biggest fish around. However, entities such as Coronzon - another higher lifeform which also does not belong to the 'surface reality' similar to Aiwass - put this into doubt, and later on its true contractor Anna Sprengel complains about not being able to destroy Aiwass' avatar in one hit like she used to do in the past.
- Ambiguous Gender: Accelerator describes it as being more feminine than masculine in appearance, though it is generally referred to with male pronouns by Aleister. Considering its nature, it likely doesn't have any actual gender.
- Angelic Abomination/Humanoid Abomination: The novels go on lengthy descriptions to emphasize just how much of an Eldritch Abomination Aiwass is despite resembling both human and angel.
- For starters, it cannot even convey what it is in human language and has to instead get by on approximations: it states both 'angel' and 'dragon' are close enough to what it is. It requires the AIM fields produced by Espers and extremely complex programming to manifest. When Accelerator observes its features, its face seems to display several emotions at once but he is unable to understand them. In battle, Aiwass manifests platinum white, seemingly angelic wings, which might resemble traditional angel wings in appearance but are so unworldly and bizarre Accelerator is not even sure what's strange about them: it easily bypasses his vector redirection and annihilates his own angelic wings.
- In terms of mindset, it understands morality and other human terms, but is mostly indifferent to them - only 'interesting things' done by exceptional humans pique its interest. It even finds the idea of being killed an interesting one with no thought given to self preservation and Aleister has to install anti-suicide mechanisms to its physical form, because according to him it is perfectly willing to kill itself out of boredom.
- Later volumes of New Testament explore his angelic nature further. While not a Biblical angel, its designation under the laws of Thelema is 'Holy Guardian Angel' which refers to the fact it came from the world near the very bottom of the Layers which made up reality, close to the 'pure world' untouched by magic. Its manifestation in the surface world requires an avatar, which it usually accomplishes by possessing someone, but Aleister makes use of AIM fields as a substitute.
- Blue and Orange Morality: As a being from the Aeon of Horus, its morality is radically different from those of the Aeon of Osiris. It appears to understand human morality but is fundamentally uninterested by its very nature. Instead, its actions are guided entirely by what it finds interesting. In New Testament 19, Aiwass admits to being fond of strong-willed people and people who rebel against the status quo, which is what motivates him to support Aleister in a mysterious way; though Aiwass also says its help is done on a whim. Kamachi even warns the reader about considering Aiwass as 'good' in the last line of the novel's afterword. Sure enough, Aiwass reveals its true colors three volumes later.
- Kamachi: But make no mistake; this series Aiwass is not a particularly good person.
- Bunny-Ears Lawyer: A little bit. After beating down Accelerator in Volume 19, how does the nigh omnipotent angelic entity choose to contact and converse with Aleister...? With a cell phone of course.
- Chekhov's Gunman: Aiwass is first mentioned when Index recounts Aleister's life and the circumstances behind the creation of the Book of the Law in Volume 07. The nickname "DRAGON" was first mentioned later at the end of Volume 15. It becomes the driving force of Volume 19.
- The Chew Toy: Surprisingly enough, this is how Aiwass is treated by its true contractor Anna Sprengel. During their reunion in New Testament volume 22, Anna greets Aiwass by jamming her hand into its stomach and forcefully uses Aiwass as her seat: she continues to talk down and verbally abuse it as the two casually speak. Aiwass doesn't seem to mind this however, and Aleister assumes that while it appears Anna is holding the leash of Aiwass, it is possible they are purposefully going on a charade in front of him to fake the actual balance of power between them.
- Curb-Stomp Battle: It easily beats down Accelerator of all people with nothing but its passive defenses. Much later it also delivers another one to Touma: not only it ignores and destroys the Imagine Breaker in short order and casually crushes the Invisible Thing sealed in it, once Aleister's Blasting Rod multiplies its already godlike powers by a factor of 10, its next attacks carry so much raw power that by the time Touma regrows his Imagine Breaker he can barely negate any of them.
- Death Seeker: While not actively seeking death, it doesn't care very much about its own life. For example, it thinks it would be amusing if Accelerator were to kill it, simply because that would badly derail Aleister's plans. This trope is however downplayed once it is revealed its current manifestation is merely an avatar, meaning it wouldn't truly die even if its form were to be destroyed.
- Enigmatic Empowering Entity: To Aleister, as his mentor.
- Fighting a Shadow: Aiwass often emphasizes it is not a being of the current world to begin with. Killing it means little, as it will someday return again.
- Greater-Scope Villain: Probably not truly bad, but definitely morally ambiguous. It's currently in a position of non-interference though, unless something interests it.
- Guardian Entity: Possibly one for Aleister, though its true allegiance is with Anna Sprengel. The last few volumes of New Testament continually refer to Aiwass as 'Holy Guardian Angel'.
- Holy Halo: He has one, as seen in the picture, which befits its sort-of angelic nature.
- I Cannot Self-Terminate: Not that it expressed interest in doing so, but Aleister put an automatic self defense system on its physical form so it can't even try.
- I Let You Win: New Testament volume 19 has Aiwass losing against Coronzon during their battle within the Windowless Building when it was jettisoned into space. However, it's noted Aiwass is unable to access its full power during said fight due to lacking the usual AIM fields it uses to manifest, and it never necessarily intends to best the demon in combat anyways: even Coronzon notes after their battle that Aiwass intentionally lost.
- Intrigued by Humanity: A reason Aiwass claims for doing the things it does. It is very interested in Touma Kamijou, Accelerator, Shiage Hamazura, and Teitoku Kakine. At one point, Hyouka Kazakiri warns that if Aiwass continues to screw with humanity, they will eventually rise up and destroy it. Aiwass responds that if humanity has the potential to be capable of that, then humanity is truly interesting.
- It Amused Me: The reason for everything it does.
- Aiwass: My mind is not structured simply enough to recklessly oversimplify things to a duality, but it can be fun to occasionally play the hero as a way to enjoy this silliness.
- Loophole Abuse: Due to the fact that it's considered an extraterrestrial life-form, Aiwass can actually draw upon some of its power without an avatar if it leaves the planet and ends up in outer space, which is how it is able to fight Coronzon (who has Lola Stuart as avatar) after the Windowless Building is jettisoned into space.
- Manipulative Bastard: The final volumes of New Testament reveal Aiwass isn't actually working for Aleister. In much the same way Coronzon was summoned by Samuel Mathers before Aleister did, Aiwass too was summoned earlier by Anna Sprengel in the past. Anna's body was stolen a century ago by an impostor, and Aiwass has been working toward taking it back ever since: giving Aleister the knowledge to write the Book of Law, keeping his daughter Lilith away as a failsafe against Coronzon, etc. Aleister even posits the possibility that Aiwass might be manipulating Anna as well - since it doesn't correct Anna when she thinks Aleister has died in the finale of New Testament, despite being most likely aware that both Aleister and Coronzon survive.
- Nigh-Invulnerability: At least, to beings from the Aeon of Osiris. Even Imagine Breaker cannot negate Aiwass upon contact, although it can negate its attacks.
- One-Winged Angel: After defeating Accelerator, Aiwass comments Aleister programmed a "transformation" option within its avatar - no doubt it will be this.
- Our Angels Are Different/Our Dragons Are Different: Although how different is a matter of debate. Fiamma of the Right describes it as an angel that cannot be explained by the Bible or theology. Aiwass says both an angel and a dragon are some of the more accurate ways to describe what it is. It's not until New Testament that more of its true nature becomes clearer, and even then not all is revealed about Aiwass.
- Physical God: Aiwass is one of the strongest entities in the series shown so far.
- Power Gives You Wings: Sprouts golden wings when it powers up.
- Public Domain Character: Aiwass was the name of a voice that the historical Aleister Crowley heard on April 8, 9, and 10 in 1904. Crowley claimed that this voice dictated The Book of the Law to him.
- Rapunzel Hair: Again, see the picture.
- Starfish Aliens: A possibility. Aiwass mentions that even if it vanishes, it'll be back in another 10,000 or 100,000 years, since it's not of this world in the first place.
- Starfish Language: Aiwass is momentarily confused by the language of humanity not being able to express several concepts it is trying to convey. This is generally translated as a bunch of gibberish surrounding a word that is close to what it means but not quite right.Although, born is not quite the right word. It would be more correct to say uyAPPEARidvif damn, the language cannot keep up. Rather than born, let us say appeared. That is not technically correct, but I cannot express it any better than that.
- "The Reason You Suck" Speech: Without malice, Aiwass points out that the three main irregularities in Aleister's plans are all more heroic and determined. Touma is a hero by doing what comes naturally to him, Accelerator is The Atoner and Shiage achieves the status of a hero by protecting someone important to him. Aleister, on the other hand, merely fell into darkness. Aleister is clearly rattled by this declaration.
- Aiwass spends its fight with a fellow entity from beyond the world Coronzon mocking and belittling the demon in just about any way it could: Coronzon's nature, actions, thought process, intelligence. It is highly implied Aiwass' I Let You Win moment is the grand culmination of the angel's insults against the demon.
- Things Man Was Not Meant to Know: One of the members of Academy City's Board of Directors stated he wished he never knew of Aiwass in the first place.
- Weaksauce Weakness: It cannot manifest in the physical world unless the area is heavily saturated with AIM fields from Espers. Even then, its unstable energy form needs to be programmed further: so many things have to go right for Aiwass to manifest and even a single tiny imperfection can dispel its form. New Testament reveals none of this actually hurts Aiwass itself at all; its physical form is just an artificial avatar through which it interacts with the world.
- You Cannot Grasp the True Form: The reaction of anyone who encounters Aiwass and is not aware of its nature is this trope. Accelerator cannot even explain what's wrong with Aiwass' wings when it ignores his auto-reflection and Touma is exasperated when his Imagine Breaker not only fails to negate Aiwass, but his arm is instead dislocated.
The Key to the Imaginary Number District
Index's first "friend" in Academy City. She is gentle, quiet, and shy. She has a tendency to cry easily.
It is later revealed that she is actually an aggregation of AIM from espers. A special code from the Radio Noise network allows her to manifest as the Artificial Angel, Fuse=KAZAKIRI.
- And I Must Scream: Most of the time, she is invisible, inaudible, and intangible and wanders Academy City without anybody to talk to. She eventually learned to make herself solid, but she can't keep it up indefinitely. Fortunately, she doesn't let it get her down, especially since she can observe what everybody is doing and keep tabs on her friends, ready to become solid and help them.
- Artificial Human: Of a sort, although her classification in the series is an angel.
- Badass Adorable: Cute and (very) powerful.
- Boobs of Steel: One of the most powerful characters in the series and has a huge rack.
- Cosplay: Like Index, she's a fan of the show "Magical Powered Kanamin", and once dressed up as the villain.
- Gainaxing: In the anime, at any rate.
- Humanoid Abomination: She is actually the conscious form of the aggregation of the AIM Dispersion Fields of espers in Academy City, the Imaginary Number District.
- Irony: She (her human form and consciousness at least) was born when Touma's Imagine Breaker, something that can destroy her with one touch, entered Academy City for the first time. Her fear of death gave her life.
- MacGuffin Super Person: As the key to the Imaginary Numbers District and her connection to the MISAKA network, she is needed in Aleister's plan to create an Artificial Heaven.
- Meganekko: Wears glasses.
- Nice Girl: Always helps Index and gives her advice.
- Our Angels Are Different: Via the use of the Misaka Network and a special code, she becomes the artificial angel, Fuse=KAZAKIRI.
- Plucky Girl: Once she overcomes her fears, nothing can stop her from saving her friends.
- Power Glows: Overall on her hair.
- Shrinking Violet: In regular situations, she is very shy and rarely speaks up.
- Tomato in the Mirror: First learned of her true nature when flying debris breaks her head in half. Her body is hollow with a strange crystal inside. Her injury heals up. Before this, she thought she was just a normal human being and she didn't take the revelation well until Touma assures her that he and Index don't feel any differently toward her.
- Took a Level in Badass: First during the invasion of Sherry Cromwell and then a great one against Archangel Gabriel resulting in a Big Damn Heroes.
- What Measure Is a Non-Human?: Several characters dismiss her as a mockery of life, an artificial angel. She despairs until Touma reassures her that he and Index don't care about that, she is still their friend and a being that is alive and deserves to exist.
- Why Did It Have to Be Snakes?: She is subconsciously afraid of coming near Imagine Breaker, since it would erase her from existence if she touches it. Touma assures her that it is a good thing, since her fear of death proves that she is alive.
- Younger Than They Look: She's actually just 10 years old.
As Fuse=KAZAKIRI, the following tropes apply:
- Anti-Magic: Since her manifestation as Fuse=KAZAKIRI requires large amounts of AIM, her presence essentially causes nearby sorcerers to be damaged due to the toxicity of AIM to sorcerers.
- Combo Platter Powers: Her powers while in Fuse=KAZAKIRI mode are very diverse and do not appear to have a general theme to them.
- Deflector Shields: Is able to put up AIM force fields around people to protect them.
- Flight: She can fly at several times the speed of sound.
- Fricking Laser Beams: Can fire laser beams up to 10 kilometers in range.
- Healing Factor: She can regenerate from any injury as long as her crystal core is unharmed.
- Holy Halo: A halo with rods extending from it forms over her head.
- Instant Expert: Had no trouble using all these abilities to fight Archangel Gabriel immediately after first accessing them.
- Laser Blade: Her powers allow her to manifest one.
- Shock and Awe: Her wings are made of lightning.
- Superpower Lottery: According to the released Power Level charts, she's just a little bit less powerful than Archangel Gabriel and fully-Awakened Accelerator.
- Super Strength: Once she learns her true nature, she's strong enough to cave in concrete. Later, she's able to contend with Archangel Gabriel.
A mysterious woman seemingly held prisoner in the Windowless Building. She was released in New Testament Vol. 5.
- Adaptive Ability: Starts out seemingly normal, then it turns out that she rapidly absorbs information around her to evolve. Aleister Crowley states that it would take about 2300 years for her to become the Ultimate Life Form at her current rate of development, but if she were to eat Last Order's brain and gain access to the Misaka Network, it would take a mere 3 seconds.
- Ambiguously Human: She's not a magician and she doesn't think quite like a human does, but beyond that it's not really clear what her deal is. The natural assumption would be that she's a Gemstone, but several characters express doubt over this idea. Touma is unwilling to touch her in case she's something like Hyouka Kazakiri.
- Cannibalism Superpower/Horror Hunger: In NT 6, she evolves into being able to eat a person to gain their powers and memories. She is now driven by instinct to try to eat Last Order, and hates herself for not being able to resist. Touma solves the problem by having Cendrillon create a lifeless duplicate of Last Order. Fraulein eats it and her hunger is satiated.
- Extreme Omnivore: While she's not seen as capable of eating everything, she was able to eat an AIM being.
- Complete Immortality: She's existed since the witch hunts in the Middle Ages. Nothing seems to be able to harm her.
- Does Not Like Shoes: Even after befriending the others and having the opportunity to acquire clothes, she still wanders around barefoot.
- The Dreaded: Aleister kept her isolated in the Windowless Building, unable to absorb any information, because he is terrified of what she can do once she evolves. He believes she can jeopardize his plan.
- Emotionless Girl/The Spock: Justified as she starts out with no memories. However this is changing as her mind is stimulated by the info she absorbs. At the end of NT Vol 5, she declares that Last Order and Fremea are her friends.
- The Fog of Ages: She does not remember her origins nor her original name.
- Fountain of Youth: After eating Cendrillon's fake Last Order, she turns into a little girl.
- Girl in the Tower: While she was imprisoned.
- The Glomp: Starts doing this all the time near the end of NT Vol 6, believing it is what friends normally do.
- I Cannot Self-Terminate: Because she is immortal.
- Living MacGuffin: GREMLIN wants to capture her, believing that her unique nature can help them achieve their plans. After her hunger is cured, Thor and Marian decide she cannot be useful anymore and abandon their attempts to get her.
- Nigh-Invulnerability: She's resistant to damage, but even if she's hurt it doesn't really matter because she'll apparently just regenerate. Nobody has found a way to kill her.
- No Social Skills: Possibly due to being trapped in the Windowless Building for so long, and seemingly having no memories.
- Poisonous Person: She can insert a microscopic substance in a target. Living beings merely get sick or faint, due to the immune system acting up similar to organ rejection. In a foreign object, the substance can expand until it breaks.
- Rapunzel Hair: It goes down to her ankles.
- Running on All Fours: Once she develops a Horror Hunger for Last Order's brain, her immediate response to seeing her is to charge on all four limbs like a hungry predator, apathetically barreling over Shiage in the process.
- Sensor Character: She can detect electricity like a shark can.
- The Stoic/The Quiet One: Only speaks when someone directly speaks to her.
- To the Pain: She informs Hisako Yakumi that she won't finish eating her until she finished reflecting on herself.
- Stripperific: She's introduced in a transparent dress and pink bra and panties.
- Uncanny Valley: In-universe. Touma says that although she looks normal, it feels like something is off about her appearance.
- Who Wants to Live Forever?: She starts feeling this way when she is driven by instinct to try to eat Last Order. She calls herself a monster for not being able to resist and realizes she can't even commit suicide or be killed, since she can't be harmed. Touma restores her will to live by satiating her hunger peacefully.
- You Gotta Have Blue Hair: Hers is silver/lavender.
Mina Mathers (Reading Thoth 78)
The wife of Samuel Liddell MacGregor Mathers of the magic cabal Golden Dawn, this is not the original but rather an accidental recreation by Aleister Crowley, a grimoire containing her identity and name. She appears in New Testament Volume 18 to guide Touma through the Windowless Building and shed light upon Aleister's past.
- Artificial Intelligence: Starts out as one, but graduates to Artificial Human status after Aiwass creates a new grimoire for her through which she manifests a physical body that can eat and sleep.
- Buxom Is Better: Is noticeably stacked, and her outfit shows it off.
- Cat Girl: She appears before Touma with black cat ears and a tail. Even her new grimoire courtesy of Aiwass is called "Secrets of the Black Cat Ritual".
- A Form You Are Comfortable With: She manifests her physical appearance as one Touma would be comfortable with, which muddles which of her features are those that Touma prefers and which were ones the real Mina had.
- Knife Nut: Her primary weapon, both for stabbing and through which she casts her magic.
- Ms. Exposition: It's her job in Volume 18 to narrate to Touma (and by extension the audience) Aleister's past.
- She's Got Legs: And her outfit is cut in such a way that it shows, even with her stockings.
An anime-exclusive character. A mysterious girl whom Mikoto and her friends find sleeping in the park. Upon introductions, she knows Mikoto's name without being told.
- Artificial Human:
- When she is hospitalized by a fever, Heaven Canceller examines her and reveals she is man-made. Specifically, she's a completely artificial esper designed to be more reliable than those created from natural-born humans.
- The Sisters decide that since she and Janie are imprinted with artificial minds from Testament in the same way as the Sisters (their programs were even written by the same person), that the two are actually the little sisters of the MISAKA Network.19090: And does a big sister need a reason to help her little sister?
- Cuteness Proximity: Towards Gekota, like Mikoto. She actually steals one of Mikoto's rare Gekoto finger puppets, much to Mikoto's annoyance.
- Elegant Gothic Lolita: Her outfit.
- Expendable Clone: She's the backup to her big sister, Janie. Note that Janie is every bit as much an Artificial Human as her.
- First-Name Basis: Always calls people by their first names.
- Hair Antennae: And they work as literal antennae, as they're what she focuses her esper power through.
- Has Two Mommies: She was raised by Uiharu and Saten until the end of Railgun S.
- Is That Cute Kid Yours?: Kuroko briefly thinks she might be Mikoto's daughter. Considering Mikoto is 14 and Febri about 8, everyone else just rolls their eyes.
- Mind over Matter: She and her big sister have a complicated esper ability, that involves puppeteering things by filling them with "virtual matter", and controlling them from a distance using their strategically-placed hair as remote antennas.
- Mysterious Waif: She's little, was sleeping in a public place, and knows Mikoto while Mikoto doesn't know her. And then it turns out that Haruki Aritomi is trying to capture her.
- Oral Fixation: Always has a lollipop or candy in her mouth.
- Put on a Bus: She, Janie, and Shinobu leave Academy City at the end of Railgun S so adjustments can be made that will allow her and Janie to survive without their lollipops.
- The Quiet One: It took a while for her to respond to Mikoto and her friends.
- Trademark Favorite Food: Extremely sour lollipops. It turns out that they neutralize toxins in her body, and if they run out, she will die. Fortunately, she and Janie are taken to a special facility where their bodies can be purified.
- Why Did It Have to Be Snakes?: While she warms up to the others quickly, she's terrified of Mikoto and refuses to explain why. She eventually warms up to her.
The main antagonist of the Railgun manga's Dream Ranker arc, the Doppelganger is an android created out of the cyborg parts used in Ryoko Kuribas body split experiment. The experience of being alive apparently granted her a soul, and she initially believed she was the real Ryoko Kuriba. She took the revelation that she wasnt rather poorly.
- Achilles' Heel: The Doppelganger has powerful regenerative abilities, but has difficulty restoring parts of herself that have been heavily burned or utterly disintegrated.
- Ghost in the Machine: The entire reason behind why she was built was an attempt to study this.
- I Cannot Self-Terminate: The Doppelganger's ultimate goal is to destroy itself and everything that could lead to another like it to be developed, including killing its own creator and destroying all the project's data. Since its self-preservation function prevented it from simply destroying itself, she turn to attacking the city to force its defenses to destroy her.
- Kill and Replace: What Ryoko Kuriba expected her to try and do. While she certainly tried to kill her, her comments while doing so suggest she was more interested in removing her as a threat than taking her place. In fact, her "hallucination" in Ryoko's dreams spends her time just talking to her and helping with her research.
- Lack of Empathy: Has absolutely not compunction about killing or maiming anything in her path. Its questionable whether she even understands the concept of morality, given her comments about only having numerical values for things like pain while crushing Leaders arm.
- Maybe Magic, Maybe Mundane: After she's destroyed and her parts used to save Ryoko Kuriba's life, she starts appearing to her in her dreams. Ryoko originally believes she's just a hallucination, but the Doppelganger is able to accurately describe her battle with Mikoto, which Ryoko herself didn't know. The Doppelganger isn't malicious, however, and even helps point out corrections in Ryoko's research in her dreams.
- One-Winged Angel: After being damaged during her fight with Scavenger she begins absorbing paper, concrete and metal into herself in order to repair the damage and bolster her strength. Later goes to extremes when she absorbs several buildings during her fight with Mikoto.
- Perception Filter: When the Doppelganger is still in the institute she briefly sees an automated cleaning robot as a maid and mechanical repair tools as a first aid kit.
- Robot Me: For Ryoko Kuriba.
- Soul Power: It is initially hypothesized that the Doppelgangers soul is not bound to its body like a normal humans, and can spread outwards to inhabit and take control of inanimate material like steel and concrete. This even extends to physical matter used by ability users such as Narus paper.However, it is eventually revealed that the Doppelganger never really had a soul. Her apparent supernatural ability to "possess" matter was a trick done using self-replicating artificial muscles, possessing traits similar to slime molds, that the Doppelganger could use to control materials by embedding them at a microscopic level.
- Super Strength: Her cyborg muscles are incredibly strong, allowing her to crush bones and break concrete without much effort.
- Tomato in the Mirror: Briefly believes herself to be the real Ryoko Kuriba, but starts having doubts when she realises she has no clear memories of her life before the experiment. Then she accidentally cuts her artificial skin open and the façade is shattered permanently.
Etsu Aihana (real)The mysterious sixth Level 5 Esper. Not much is known about this person, not even their gender. When the Daihaseisai committee was searching for the Level 5s in Chapter 43 of the Railgun manga, despite all the other Level 5s being located, the sixth couldn't be found, which had been expected to some degree. The sixth also appeared in the tenth volume of the New Testament, when a mass message was sent to the Level 5s requesting their participation in the elimination of Touma Kamijou and Othinus, with the sixth's response being silence and toying with the phone. They are frequently impersonated, with at least three fakes appearing in the series.
New Testament 12 reveals that their name is "Etsu Aihana", and that they employ Yokosuka the Organ Crusher to distribute their identity to those in need. Their motivation for this is currently unknown, though it's suggested that they're just trying to help people.
- Guile Hero: If the end of New Testament 12 is any indication, he may be this.
- Helping Would Be Killstealing: The reason Aihana hasn't helped their imposters directly is because Aihana claims it's meaningless unless the imposters solve their problems themselves. Yokosuka calls them out on this, saying they looking down on them.
- Legacy Character: Distributing their identity to other people creates this effect.
- Masquerading As the Unseen: Aihana's way of helping other people is by arranging the use of their identity, which no-one knows anything about.
- No Name Given: Like everything else about the character. New Testament 7 had an imposter #6 that introduced himself as "Etsu Aihana", but this was believed to fake until New Testament 12 revealed that "Etsu Aihana" actually is the real name of the sixth Level 5 esper.
- Running Gag: Expect any mention of #6 to be very quickly glossed over.
- The Ghost: Has yet to make their debut. Is known to exist by process of elimination, but nothing has been revealed about them.
- This actually becomes a plot point in New Testament 12; several people impersonate #6 because no-one knows anything about them. The end of the volume reveals that Aihana deliberately and secretly distributes their identity to those in need.
The seventh Level 5 esper, Gunha is a Gemstone, an esper who was born with his powers. His ability is nameless and absolutely impossible to define, though it allows him to create strange explosions, attack at twice the speed of sound, and recover from being shot in the head or heart with no pain. He is classified as the lowest Level 5 precisely because nobody understands his immense power, and thus they can't even guess where he really ranks. He has a strong sense of justice and believes that everything can be solved with GUTS.
- The Ace: Despite his lack of control of his abilities, Gunha is also noteworthy in being the only Level-5 Esper who wasn't experimented on to get enhanced to that state.
- Apathy Killed the Cat: Has no desire to find out how his powers work and how to make better use of them, and even how to properly fight, as he thinks barreling his way through is the way a man should fight. When he rushes into a situation, he never stops to ask what is going on and even brushes off people trying to explain the situation to him.
- Attack! Attack! Attack!: His philosophy is to charge into situations without hesitation and punch any bad guys in sight, relying on GUTS to power through. He even brushes off people trying to explain the situation to him.
- Barrier Warrior: Created a path through Mikoto's countless black lightning bolts with an invisible force to allow Touma to reach her and stop the Level 6 Shift. The downside is that Gunha received damage for every lightning bolt this barrier took.
- Beyond the Impossible: He specializes in regularly ignoring the laws of physics. While other Espers subtly bend reality to make their powers work, his is the only one that completely and blatantly ignores the laws of physics with no known explanation. For example, he punched lightning. Some fans have calculated that particular lightning bolt (launched by Misaka who was 2% of the way into her Level 6 shift and out of control) to have enough power to level a small island!
- Big Damn Heroes: He saves Touma from being crushed by a large ball of metal scrap controlled by Mikoto, who is under the effects of the Level 6 Shift attempt done on her.
- Blood Knight: He likes fighting strong opponents. After seeing the dragon inside Touma, he admits he wants to fight him some day.
- Boke and Tsukkomi Routine: Happens with Yabumi Haratani. Whenever Gunha gives out an explanation for his powers, Haratani ends up calling him on it, followed by Gunha responding with a dumbfounded variation of "Then what did I just do?" Gets lampshaded by Mikoto.
- Born Winner: Being a Gemstone, he was born with his high level esper abilities.
- Calling Your Attacks: "Amazing Puuunch!"Yokosuka: Please, just beat me with an attack that sounds like it's worth losing to at least. Not that Amazing Punch attack.
- Chronic Hero Syndrome: Even moreso than Touma. He's constantly wandering around Academy City helping people in need and will never turn down a request.
- Cloudcuckoolander: He's in his own little world where he's a superhero saving the world from bad guys, with GUTS! Case in point, when Mikoto tried her railgun attack on him, his first reaction was to scold her for taking an arcade coin out of the arcade.
- In New Testament Volume 7, while heroes from all over Academy City were rushing to try to save Fremea and attacking each other as a result, Guhna was in the middle of it all unaffected by the project, and defending trees.
- Coat Cape: Tends to wear his jacket like a cape. Appropriate since he thinks he's a superhero.
- Combo Platter Powers: His power is stated to be impossible to define, and manifests in a variety of ways, including as a Deflector Shield powerful enough to block Mikoto's electric attacks, a Healing Factor that can stop his bleeding and even reset his bones, a scream loud enough to cushion his fall and make the surroundings rattle, forcing everybody nearby to cover their ears, Nigh-Invulnerability, the ability to create a strange explosion around him that throws people away, Super Speed, Super Strength and Teleportation.
- Determinator: He repeatedly gets back up during his fight with Ollerus despite being totally outclassed.
- Early-Bird Cameo: Appears unnamed in one of the memories of a Level Upper user (possibly Yabumi Haritani) during the AIM Burst phenomenon in Chapter 15 of the Railgun manga, well before Gunha's actual first appearance in Chapter 44. Witnessing Gunha's amazing power appears to have been the catalyst for that esper to use the Level Upper in the first place.
- Explaining Your Power to the Enemy: Spoofed. See It Runs on Nonsensoleum below.
- Fastball Special: Subjects Touma to one while trying to save Mikoto from Gensei's Level 6 Shift Project.
- Foil: To Touma. Mikoto even wonders if they know each other after Gunha is able to withstand her electrical attacks. Railgun Chapter 63 has them meeting and teaming up to subdue a supercharged and "not herself" Mikoto.
- For Great Justice: Making the world a kinder and gentler place..... one ass-kicked villain at a time.
- Genre Refugee: He talks and acts like he's The Hero of a Sentai anime or a Saturday morning cartoon in a series far more mature and realistic that that. Considering that he's the Hero of Another Story, he might not be far off the mark, but nonetheless, this is not his story.
- Hero of Another Story: His high school teacher notes that he misses school to help people all the time (just like Touma), yet we've barely seen any of it.
- Honor Before Reason: Despite having super speed and teleportation, he always announces his presence, attacks head-on, and refuses to attack from behind, saying that a true warrior wouldn't sink to dirty tactics. This is also the reason why he sees no reason to learn how his powers work and how to properly fight.
- Hot-Blooded: Everything is fighting with GUTS for him.
- How Do I Shot Web?: An unusual example in that he knows how to use his powers, but he has no idea how they work (Touma is the only one in the series with similar issues). Ollerus tells him that he might have stood a chance in their fight if Gunha actually knew how his powers worked and took better advantage of them.
- Idiot Hero: He acknowledges this, but claims it is irrelevant.
- It Runs on Nonsensoleum: Even in a series that runs on magic and Techno Babble, his powers are singled out as being one big "Screw You" to every known law of physics. Even the Kiharas, a group with hundreds of world-class researchers dedicated to the study of Esper powers, have no freaking clue how his powers work.
- Lampshaded. At one point, he gives the same kind of fake scientific explanation for his abilities as everyone else does, only to be met with a flat statement that what he just said was completely impossible and makes no sense. It turns out that he has absolutely no understanding of the science behind his powers and was making up explanations.
- Know When to Fold 'Em: Even he of all people realized he should retreat when faced with the Tokiwadai Dorm Supervisor.
- Large Ham: Makes dramatic speeches all the time and announces his arrival like a superhero.
- Lightning Bruiser: Can move at twice the speed of sound and punch lightning out of the air, smash through giant masses of rubble, and catch Mikoto's railgun with his teeth (albeit while she was holding back).
- Leeroy Jenkins: Oh yeah, big time.
- Made of Iron: Can keep fighting after severe injuries like getting his heart pierced.
- Meaningful Name: His names can be translated as "Supremacy of the Military Court".
- Nice Guy: By Level 5 standards, a pure, good-hearted, and righteous boy like him is a veritable saint.
- Now, That's Using Your Teeth!: He catches a railgun from Mikoto using his teeth. It was only at 30%, but still...
- O.O.C. Is Serious Business: Seeing the near end result of Mikoto's Level 6 Shift and seeing the dragon come out of Touma's arm were serious enough to get him to speak clearly and calmly and say they can't just jump in without a plan.
- Shout-Out: In his first appearance in SS Volume 2 (and in the Railgun manga and in the Fanfare side story) he makes a dramatic speech that is immediately followed by explosions of colored smoke behind him.
- Stunned Silence: His reaction to hearing Touma's near-suicidal plan to finally end Mikoto's Level 6 Shift.
- Unskilled, but Strong: Compared to the other level 5 espers, who are all basically walking supercomputers. Gunha's only strategy is to charge in and start swinging unless someone manages to miraculously convince him that there's a better option. Ollerus outright admits that Gunha would have beaten him if the Level 5 had understood the true nature of his own power.
- Verbal Tic: He believes in being GUTSY over everything else to such a degree that he tries to insert something about GUTS in as many of his sentences as he possibly can.
- Wearing a Flag on Your Head: He wears a shirt emblazoned with the Rising Sun.
- When All You Have Is a Hammer...: Believes everything can be solved with punching and GUTS! If they aren't working, then you just need more of them.Gunha: She needs more guts, I'll inject her with some.
Touma: That's not the issue here.
Gunha: No, she's just acting out after straying from the right path, but with some guts...
Touma: Please listen!
- Wide-Eyed Idealist: He thinks the world is a simple place where good and evil can be easily distinguished and all he has to do is beat up the bad guy.
Motoharu's younger step-sister, Maika is a maid-in-training and Touma's next door neighbor.
- All-Loving Hero: Even as a young child, she aspired to help everyone.Maika: Helping everyone live their lives with a smile is the most wonderful dream I can think of.
- Covert Pervert: Likes Yaoi Genre and incest romance manga.
- Double Entendre: Take this however you will...Maika: "The air conditioner's damaged today, so I'll be coming over. Also, I think my Aniki will be making noise tonight, so please pardon us."
- Heartwarming Orphan: Revealed to be her backstory in NT7.
- Last-Name Basis: To show how carefree and uncaring towards authority Maika is, she is characterized as habitually referring to people by their family names without adding the polite "-sama" suffix that a maid is required by professional conduct to do.
- Locked Out of the Loop: Has no idea about the Magic Side, the Dark Side of Academy City, and about Motoharu's adventures. Her death gets faked and later Motoharu's death is faked without her noticing.
- Meido: Without any of the professionalism that comes with the job, though. Can be explained by her still being in training.
- Morality Pet: To her brother, Motoharu.
- Not Blood Siblings: Motoharu didn't even have a sister originally. However, when he was about to spy on Academy City for the Magic Side, it was suggested to him to take a girl with him and pretend they were siblings, all to make his cover story more plausible.
- Odd Friendship: Gets along quite well with Himegami.
- Servile Snarker: Unlike a normal maid, not only does Maika shows absolutely no subservience towards the people she serves, but openly teases them about subjects that might cause discomfort. Nevertheless, she is friendly enough about it to not cause any lasting offense.
An esper girl who participated in the riots caused by the Agitate Halation Project. She apparently has a day job as a stage performer and has sound related abilities.
- Attention Whore: She can't stand not being in the spotlight.
- Exposed to the Elements: She wears a bikini top, baggy pants, and shoes in November. This is apparently her stage outfit. Others comment that she doesn't seem to notice the cold.
- Glass-Shattering Sound: Even while under the effect of AIM Jammers Ayame managed to use her natural voice and resonance to destroy the internal semiconductors of the Reformatory's security robots, disabling them.
- Honor Before Reason: Thinks getting everyone's attention is more important than victory or safety.
- Kung-Fu Wizard: While under the effect of AIM Jammers during the Reformatory's jailbreak challenge Ayame proves herself to be capable of defending herself from smaller wasp-like security robots using hand-to-hand combat.
- Large Ham: Loudly narrates everything she does, even in the middle of a fight, as if she were an announcer or a singer about to do a concert."Thank you for inviting me tonight! Let's get this one-man outdoor concert in the Learning Core started!! We won't stop until morniiiiiiiiiiiiiiiiiiiiiiinnnnnnnnngggggggggggg!!!!!!"
- Leeroy Jenkins: Her idea of "saving" Fremea Seivelun is to attack anybody in her path so that all of Fremea's "enemies" are gone.
- Make Me Wanna Shout: By yelling into a megaphone or other sound amplification device, she can amplify her voice to the point of creating explosive shockwaves. She apparently requires the sound amplification devices, as when Shizuri Mugino destroys them, she makes no attempt to fight back with her regular voice.
- Pungeon Master: Talks in show business puns. She refers to herself as the star, her fights as a concert or performance, refers to Shizuri Mugino unexpectedly showing up to stop her as an ad-lib, etc.
- Shout-Out: The artist says her outfit brings to mind a girl out of Aladdin. She even wears an earring that is shaped like the magic lamp.
- With Catlike Tread: At one point, she tries to sneak around, but then says she can't stand not being in the spotlight and starts announcing her presence.
Seria Kumokawa's younger sister, and Maika's friend and classmate. She was once Kagun Kihara's student and remained loyal to him even after he was branded a criminal. She is a Level 2 Esper. She plays a major role in New Testament Volume 4.
- Awesomeness by Analysis: She has a knack for figuring out how her opponents' powers work by watching them. She was even able to roughly figure out how Marian Slingneyer's powers work even though she had no knowledge of magic. Marian complemented her for this.
- Badass Bystander: She was just someone caught up in GREMLIN's takeover of Baggage City. She defeats several of them before being taken down by Marian Slingneyer and rescued by the arriving Touma.
- Braids of Action: Her long hair is arranged in six braids.
- Chronic Hero Syndrome: Has a very strong sense of justice and cannot bear to ignore the suffering around her.
- Combat Pragmatist: Will use anything available to win a fight, like headbutts, or triggering explosions.
- Dance Battler: Fights using Capoeira, breakdancing, and pole dancing moves. Enhanced by her ability, Violence Donut.
- He Is Not My Boyfriend: When her sister Seria asks if she's in love with Touma, she gets embarrassed and denies it.
- Jumped at the Call: In New Testament Vol. 8, when she runs into Touma's group preparing to storm GREMLIN's base, she immediately asks to join them in the coming battle despite barely knowing what is going on, but knowing GREMLIN has to be stopped.
- Le Parkour: She's very swift and agile, able to weave through obstacles quickly.
- Meido: Again, she goes to the same maid-school as Maika.
- Murderous Thighs: Often finishes her opponents with a head-scissors takedown.
- Rapunzel Hair: It goes down to her waist.
- Secret Keeper: She doesn't understand the significance of this, but she is one of the only people who has seen the Invisible Thing.
- Show Some Leg: She's not above exposing some skin to distract her opponents.
- Spin Attack: Violence Donut allows her to increase the centrifugal force of her movements. Since centrifugal force is inherent in almost all body movement, her ability also enhances her basic punches and kicks.
- Required Secondary Powers: She doesn't have super durability, so she rarely goes past double the force to minimize the risk of injuring herself.
- Thou Shalt Not Kill: The only rule she follows in a fight is that she refuses to kill and she even objects to her teammates killing.
- Undying Loyalty: To Kagun Kihara. She even follows him when he becomes a zombie.
- Why Did It Have to Be Snakes?: Is terrified of One-Eyed Othinus after witnessing the Majin's power and cruelty.
- Zettai Ryouiki: Grade A.
A mysterious young esper who carries a suitcase chained to her wrist and is pursued by several people.
- Born Winner: She is a Gemstone, meaning she was born with her ability.
- Faking the Dead: Touya fakes her death in an explosion to stop her pursuers from seeking her.
- Make Me Wanna Shout: She can create a powerful noise that knocks people over.
- Mysterious Waif: She never explains who she is, what's in the suitcase, and why those men were after her.
- No Name Given: Everyone refers to her as "Gemstone Girl" since she never reveals her name.
- Precocious Crush: Becomes attracted to Toya Kamijou after he helps her.
"Etsu Aihana" (New Testament 7)A young man who claims to be the 6th Level 5 esper. Misaki Shokuhou quickly explains that he is just an attention seeking impostor.
Not to be confused with the "Etsu Aihana" appearing in New Testament 12.
- Attention Whore: Why he is impersonating the 6th Level 5.
- Large Ham: Loudly announces his arrival and name.
- Megaton Punch: A single punch from him can send a person flying.
- One-Man Army: Mows through a large group of espers with hand-to-hand combat.
- The Power of Acting: Is able to convince many people that he is the 6th Level 5 without even using any esper abilities. It likely also helps he's pretty damn strong.
- Rapid-Fire Fisticuffs: His punches are blindingly fast and incredibly strong, like machine pistons.
Debuting in A Certain Scientific Accelerator, Hasami is a level 2 pyrokinetic esper with severe depression issues. She tried and failed to kill herself shortly before the start of the series, and the fake Anti-Skill officers who recovered her finished the job on the way to the hospital. Esther Rosenthal implanted a Huotou (a type of necromancy) into her body, and she soon after animated as a zombie under Esther's command.
- Driven to Suicide: She internally mocks herself for being so incompetent she even screwed this up. The DA agents don't exactly help, claiming that suicide is a sin as they're killing her.
- Human Resources: Like the other dead espers, she was slated to be used as the core of a robot with esper abilities.
- Innocent Fanservice Girl: Even more so than Esther. Esther often has more important things on her mind than clothing, but Hasami simply does not have the programming to understand the need to cover up.
- Interrogating the Dead: Esther initially uses necromancy to revive only her brain and memories, so she and Accelerator can figure out what's going on. When Accelerator pokes the brain-shaped ball of electricity that was summoned, he gets a harsh dose of Hasami's memories.
- Our Zombies Are Different: After having her living mind replaced with the spell, she acts robotically and with cold emotion, deferring to her master's command and no one else. She actually shares mythological background with a golem, being animated by a scrap of paper with instructions written on it. It is not clear if she can still access the memories she had when she was alive.
- Playing with Fire: While alive, she was a level 2 pyro. It is unknown if she retains this ability after being revived.
A Level 0 and childhood friend of Frenda Seivelun. In New Testament 12, he decides to investigate what happened to her after not having contacted her in ages, running afoul of the heroes and villains in the process.
- Action Survivor: He doesn't really have fighting skills and makes it through most situations by ducking and hiding. He does get to punch out St. Germain.
- Dramatic Irony: He appears in Academy City to look for Frenda after he lost contact with her, while readers are already aware of not only her involvement with Academy City's Dark Side, but also her violent death delivered by Mugino.
- Dude Looks Like a Lady: The artist said he intentionally designed him so he could be easily mistaken for a girl.
- Expy: According to the artist, he's one of Lain from Serial Experiments Lain.
- Identity Impersonator: During his investigation, he pretends to be Etsu Aihana, the #6 Level 5, which intimidates most people into leaving him alone and gives him some authority. Emphasis on the "most":
- When he first starts using the identity, he runs into a girl who has the same idea. The two of them try to intimidate each other with the name of the #6, only to realise that the other person had the same idea and run away.
- Then there are the people who simply aren't intimidated by Level 5s. When Shinka tries it on Stephanie, she threatens to demonstrate her esper containment skills (learned from her time in Anti-Skill). When he tries it on Touma, not only does Touma respond by casually asking if Shinka knows Accelerator or Mikoto, he unintentionally intimidates Shinka into running away by mentioning his name (apparently, Touma has now become The Dreaded to Academy City).
- Locked Out of the Loop: He had no idea Frenda was a member of Academy City's Dark Side.
- Misplaced Retribution: When he finds out Frenda had been killed by Shizuri Mugino, St. Germain tells him not to blame Mugino, but to blame Touma Kamijou for not being there to save her despite being a hero. When he attempts to attack Touma, Shiage Hamazura intercepts him and calls him out on his flawed thinking. Fortunately, he realizes he was being a fool and turns on the true villain, St. Germain.
- Morality Pet: He was one of the only people Frenda truly cared for.
- Took a Level in Badass: He was once a total crybaby and easily frightened. Then he goes on an adventure to discover what happened to his childhood friend and ends up punching out a powerful magician called St. Germain. Touma even calls him the true hero of NT 12.
- Unwitting Pawn: St. Germain manipulates him into trying to fight Touma, believing Touma would be forced to kill him in self-defense and fall from grace, until Shiage sets him straight.
A young girl and Level 1 Esper discovered by Accelerator in the hospital while taking a break.
- Damsel in Distress: She gets taken by a fake Anti-Skill element.
- Everything's Better with Princesses: Himegi thinks like one after she meets Accelerator.
- Mysterious Past: Himegi's background is not known, except that she's a level 1 Esper and someone saved her life when she was young with her biological heart replaced with a mechanical one at some point.