Trivia / A Certain Scientific Railgun

• Acting for Two: Brittney Karbowski as Misaka and the other clones. Justified since the latter were cloned based on her DNA.
• Ascended Fan Nickname: Heaven Canceler's Fan Nickname, Dr. Gekota, is acknowledged when Saten mentions how the doctor looks like Gekota.
• Flip-Flop of God: In the beginning of the Index novel and anime, Mikoto fires a railgun which passes by Touma but in the Railgun manga drawn by Motoi Fukuyama, she fires the Railgun at him which he stops using Imagine Breaker. Unfortunately, this caused some backlash with fans since it is contested by the fandom if this is possible. To avoid this contradiction, the Railgun anime has the events that lead to the Railgun incident Retcon to an earlier date before the time of the first Index arc.
• Hey, It's That Sound!: In episode 16 of the first season of the anime, the cellphone of Kurozuma Wataru (who is actually Hebitani Tsuguo goes off. If you listen to the ringtone you find that the song playing is auld lang syne.
• Overtook the Manga: The reason the first two seasons had original stories. During the first season only the Level Upper arc was done and the Sisters Arc was ongoing. For Railgun S the Sisters Arc was done but the Daihasei Festival Arc was ongoing. With the seven year gap between Railgun S and Railgun T, it meant the latter could adapt two arcs, the Daihasei Festival and Dream Ranker arcs, with no need for a filler storyline.
• Pigeonholed Voice Actor:
  • Mugino isn't the first Blood Knight or the first Ax-Crazy Lady of War Ami Koshimizu has played.
  • Mitsuko Kongou isn't the first time Minako Kotobuki played an Ojou in a series that stars a lot of girls.
• Playing Against Type:
  • Colleen Clinkenbeard as the psychopatic Therestina Lifeline.
  • Brad Hawkins and Katsuyuki Konishi as Wataru Kurozuma. An Anti-Hero who likes a good fight.
  • Sayumi Suzushiro and Emi Lo as Rakko Yumiya. A nice girl who turns out to be a psycho Dark Action Girl.
• Release Date Change: A Certain Scientific Railgun T had the unfortunate timing to air during the Coronavirus Disease 2019 Pandemic, resulting in where four episodes having delayed airings for a week or a two, followed by a two month hiatus upon the completion of the season's first Story Arc with the 15th episode.
• Sequel Gap: Season 2 of the anime ended in 2013, but there wasn't a new season until 2020.
• Star-Making Role: Three of them:
  • For Satomi Arai as Kuroko. It even landed her a "Best Supporting Actress" trophy for the 2010 Annual Voice Actor Awards.
  • One of Kanae Itō's first few roles that shot her up as a noteworthy voice actress was Ruiko Saten.
  • In the English dub, Kuroko served as this for Alison Viktorin.
• The Other Darrin:
  • For Railgun S, Lindsey Seidel voiced Aomi Yanagisako instead of Maxey Whitehead.
  • In the English dub of Railgun T:
    • Amanda Gish takes over voicing Kinuho Wannai from Kristi Kang.
    • Morgan Berry replaces Barrett Nash as Misuzu Misaka.
    • Mikaela Krantz replaces Teri Rogers as Misaki
• What Could Have Been:
  • The author Kazuma Kamachi originally intended for Kuroko Shirai to be the main protagonist, due to being only told that there was a demand for a science-side sidestory manga. But the production staff clarified that the actual request was for Mikoto to star in the manga.
  • Kazuma Kamachi's outline for the Daihasei Festival Arc orginally didn't include Gunha Sogiita. However, the manga-ka needed another month to get ready to start on the arc, so resulting in the plot of Chapter 43, where Gunha and Misaki end up being the Level 5s chosen to speak at the festival's opening. Because of this, Gunha would get a larger role in the arc's climax, fighting alongside Touma against the possessed Mikoto.
• Visual Pun: In Accelerator's first battle (chronologically), MISAKA 00001 is holding what appears to be a variant of the Colt XSE known as the Rail Gun.

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