A Certain Magical Index/Characters/Sisters

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The Radio Noise project was originally devised to mass produce Level 5 esper clones of Mikoto Misaka, but only managed to produce Level 2 or 3 espers. It was later retooled in the Level 6 shift project, which involved creating and killing 20000 clones in order to force Accelerator to attain Level 6. After the project was stopped by Touma, several clones are still around after the project. This page details the most prominent ones.

Mikoto Misaka


See the Protagonists page.


Onee-Sama (The Original)

The Rank 3 Level 5 who unknowingly provided her DNA for the project. Called "Older Sister" by all the clones.

The clones share the following tropes:

  • Bad Liar: Their Verbal Tic causes them to immediately give themselves away if they try to deceive someone.
  • Clones Are People, Too
  • Cuteness Proximity: A mild variation although it's probably natural for Last Order.
  • Hive Mind: The Sisters use their electrical powers to constantly stay in contact with each other, although they retain their individual personalities. Last Order serves as the Hive Queen, while Misaka WORST was created specifically to resist orders from the administrator. As revealed in NT Volume 6, the entire network has its own collective consciousness.
  • Narrating the Present: With the exception of Misaka WORST.
  • Posthumous Character: The vast majority of the clones numbered less than 10032.
  • Shock and Awe: Being clones of Mikoto. Most Sisters are Level 2 or 3, while WORST is Level 4.
  • Third Person Person: All of them, without exception, refer to themselves (and other Sisters) as "Misaka", both in their normal speech and in their Verbal Tic.
  • Verbal Tic: After saying something, they usually follow it with a tic along the lines of: "says Misaka as [explains intentions and/or actions]".
  • Younger Than They Look: Comes with accelerated growth.


The very first clone produced. She was a prototype, never intended to be used in the project proper. She is introduced in the Daihaseisai arc of Railgun.

  • Cyborg: She needs cybernetics in her chest to keep her alive.
  • Expendable Clone: To an even greater extent than her successors. The scientists studying her gave her drugs that shortened her already-short lifespan.
  • Flawed Prototype: Unlike the later Sisters, she's dependent on cybernetics to live.
  • Ghost Memory: Her memories were passed on to another clone, who is rescued by Misaki and Mitori at the end of the Daihaseisai arc.
  • Hidden Depths: Though she appeared to be innocent and ignorant, she was fully aware that she didn't have long to live, and knew that Misaki wasn't really her original friend the entire time.
  • Meaningful Name: "Dolly", the same name as the sheep who was the first animal cloned (intentionally by humans). Like the real Dolly, she has an unnaturally short lifespan.
  • Only Friend: A girl named "Mi-chan", actually Mitori Kouzaku. When Mitori discovered the truth about the project and tried to stop it, she was imprisoned and couldn't visit Dolly anymore. The unexplained absence caused Dolly to become distressed, interfering with the experiments. The scientists then brought in Misaki and had her use her power to pretend to be Mitori. However, Dolly knew the truth all along, yet became friends with Misaki regardless.
  • Posthumous Character: Only appears in flashbacks. However, her memories were passed on to another clone.
  • Verbal Tic: The only Sister (besides WORST) to avert this.

Misaka 9982

TV Tropes MISAKA 9982 9670.png
Voiced by Nozomi Sasaki

The 9982nd clone in the Radio Noise project, as well as the first clone that Mikoto meets. She has a rather unique personality compared with the other clones.


Researcher: How is it? It's a really high quality tea that costs 20000 yen per can.
Misaka 9982: It's horrible.
Misaka 9982: "My very first tea is this crap?!" Misaka laments over her misfortune.


Researcher: The people [in the outside world] are packed like sardines, though.
Misaka 9982: People are packed in containers?!

  • Panty Shot: Chapter 22. She flips up her skirt to catch a falling kitten.

Misaka 10031

The 10031st clone in the Radio Noise Project, and the first clone that Touma meets. She is killed by Accelerator the following day. She reappears in New Testament Volume 10 (having been resurrected by Othinus), as the vessel that the Will of the Misaka Network uses to contact Touma.

  • Doomed by Canon: When she's introduced in Railgun.
  • Squick: She's killed by having the direction of her blood flow reversed, rupturing all her blood vessels.

Misaka 10032/Misaka Imouto

300px-Misaka 10032 5945.png
Voiced by Nozomi Sasaki

The 10032nd clone in the Radio Noise project. Nicknamed "Misaka Imouto" (Misaka Little Sister) by Touma. She was saved by Touma defeating Accelerator. Since then, she and the other clones are undergoing personality rehabilitation. She is one of the clones which remained in Academy City, while several others were distributed around the world.

Last Order

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Voiced by Rina Hidaka

The 20,001st clone of the Radio Noise project, who serves as the administrator for the MISAKA network. As a result, she has more raw power than the other sisters, putting her at Level 3. After the Radio Noise project, one of the scientists uploads a virus in her system, attempting to override the MISAKA network. She is saved by Accelerator and eventually becomes his Morality Pet.

  • A-Cup Angst: She is very jealous of Misaka Worst's breasts. She doesn't take it well when Worst says she won't get to her level because they've been grown with different hormones.
  • Blush Sticker
  • Cheerful Child / Genki Girl: Unlike the other 20,000 Sister clones, she's quite capable of expressing emotions and is quite a cheerful girl.
  • Damsel in Distress: Despite being Level 3, her powers are underdeveloped, putting her in several dangerous situations involving those who want to tamper with the MISAKA network.
  • Has Two Mommies: Her guardians, Aiho and Kikyo.
  • Idiot Hair: She's by no means an idiot though.
  • Living MacGuffin / MacGuffin Girl: As the central controller of the Sisters network, she has been captured at least twice in an effort to upload a virus to all the other Sisters.
  • Morality Pet: To Accelerator.
  • Verbal Tic: In addition to Narrating the Present she announces herself as the topic of the conversation twice (Misaka wa Misaka wa) which isn't really translatable.
  • You Have Outlived Your Usefulness: With the advent of the MISAKA Worst clones, Aleister planned to replace her with a MISAKA Worst-version administrator. Accelerator thwarts this, fortunately.

Misaka Worst

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Third generation, higher-level (Level 4) and high-school version of the clones fully designed for combat purposes. They were secretly developed by Aleister, who intended to replace the outdated second generation clones to improve the MISAKA Network.


Misaka Worst: Oh, Misaka never said that. Maybe she was talking about number of appearances.
Misaka Mikoto: Now you’ve said it!!

  • Break the Haughty: Administers this to Umidori so much that she makes her cry.
  • Clingy Jealous Girl: In NT, notable for being against her will. Since she's an Enemy Without, she expresses all negative emotions, including jealousy. So when Last Order is feeling a strong bout of jealousy, Hilarity Ensues.
  • Cloning Blues: Right when she was created, she was subject to invasive surgery to cut her off from the Network. If all had gone as planned, she would be one of many clones, just as expendable as those they replaced.
  • Dark Action Girl
  • The Dark Side: She often states that she lives for this.
  • Enemy Without: Sort of; Misaka Worst is the outlet of the negative feelings of the original network. Her will can be overtaken if the negativity is too strong.
  • |Evil Twin: Initially. Later, she just becomes a Jerkass twin.
  • Evil Counterpart: To Misaka Mikoto, Last Order, heck, pretty much all of the clones. Well with Mugino's persona and Accelerator's old thought patterns planted into her, how can she not be evil?
  • Evil Laugh
  • Even Evil Has Loved Ones: In NT volume 3, while Worst is jamming all the cameras, she confesses that she's worried about putting Accelerator in danger.
  • Femme Fatale: Oh yeah, big time.
  • The Gadfly: It seems that if she doesn't get to be evil, she's at least going to do her best to troll everyone.
    • Shiage points out she's the true villain while watching her abuse Umidori.
  • Good Colors, Evil Colors: Her lightning is purple, compared to the original's blue.
  • The Gunslinger: Shows signs of being able to use guns pretty well.
  • Heel Face Turn: Teams up with Accelerator after trying to kill Last Order and him under orders from Academy City.
  • Has Two Mommies: |Since she has now started living with Accelerator, Yoshikawa has already given Worst a dress.
  • Hellish Pupils
  • Ironic Fear: Of Touma; unlike the other Sisters. This is justified, as she values herself as the negative embodiment of the Misaka network, and NONE of the Sisters have negative feelings about him, making her fear him as dangerous to her existence.
  • Jerkass
  • Knife Nut: In NT, when Accelerator told her to use it against the FRESHMEN, she told him she already did. Knowing Worst, who knows what she could done to them?
  • Laser Guided Tykebomb: Sent out to break Accelerator by either forcing him to kill her (which would break him), kill Last Order, kill him since he doesn't want to reflect her attacks and is relying on dodging, or in a worst case scenario simply die in front of him. Her entire mental outlook is more or less shaped around making her hate Accelerator and herself.
  • Mind Rape: |To Accelerator. Technically, she fails although she does basically break him. Accelerator doesn't die, Last Order doesn't die and she herself survives. After the whole thing, Accelerator is even better off due to Touma fixing him.
  • Motive Rant / Dark and Troubled Past: She kind of has a point, actually.

Misaka Worst: “Misaka was created in order to kill [Accelerator]. Misaka didn’t particularly want to be born, but she was forced to do so. In order to cut off the signals form Last Order, her skin was cut open and a bunch of strange sheets and selectors were embedded within. If it weren’t for you, none of that would have happened. If you hadn’t made that decision, Misaka would never have been born. And even if she had been, it would not have been in that way that cut off all chance for a future. ‘It hurts. Help.’ By the time Misaka learned those words, she was already in a situation where she could not say them. That is why Misaka has the right to blame you. That is why she has a reason to kill you.”

  • Nail'Em: She can use Mikoto's Railgun technique... except she uses a nail instead of a coin.
  • Odd Action Duo: Her and Kuronyan.

Misaka Worst: How about we join forces as the villain girl combo?


Misaka Worst: Should Misaka use her tongue seductively as she licks [the ice cream]?
Accelerator: Who are you trying to please by doing that? Yourself?
Misaka Worst: Well, there is that. If it would be devastating to your relationship with Last Order, Misaka will let you touch her tits and ass, but doing it now would seem rather pointless.


Misaka Worst: Gyaaaaaaaaaaaaaaahhhhhhhhhh!! Misaka doesn’t care about him, so why!?

    • In New Testament Volume 3, she remarks that when she isn't with Accelerator, she loses interest in picking fights. In short, Accelerator's proximity is her tsun trigger.
  • Woman in White: Shows shades of this, but More like Woman in Black.
  • Would Hurt a Child: She tried to kill Last Order in her first appearance.
  • Yandere: Well she was pretty crazy for wanting to kill Accelerator, and even now, she's still got the Ax Crazy persona, just toned down. It doesn't help that she got her personality from Mugino.
  • You Have Outlived Your Usefulness: Academy City made sure than whatever was the outcome of her fight with Accelerator, she would self-destruct. Who saves her? The broken, dead-inside Accelerator that just broke her arm due to being brutally Mind Raped by her. And in a different way, her generation of clones were intended to be this towards the previous set of clones. However, Accelerator appears to have forced them to stop production.

Will of the Whole Misaka Network

The collective consciousness of the 20,001 Sisters (not including Misaka WORST). She is first introduced in New Testament Volume 6.

  • Hive Mind: She is one.
  • Ripple-Effect-Proof Memory: Because she is made of the memories of the dead Sisters as well as the minds of the living ones, she is neither alive nor truly dead. As a result, she is temporarily able to retain her memories of the original world, despite Othinus changing the world countless times (as Othinus can only control the living and the dead). This didn't last, since in the world where this is shown, all the dead Sisters have been resurrected, and so her memories would eventually be overwritten as well.
  • Spanner in the Works: Othinus didn't expect her to retain her memories, and to talk Touma out of committing suicide.
  • Super Mode: Fusing with Hyouka turns the latter into an artificial angel. Fusing with Mikoto causes her to begin ascending to a Level 6.
  • Walking Spoiler
  • Verbal Tic: She has a unique one; instead of narrating her actions, she speaks like a typewriter, finishing her sentences with "escape" and "return".