[[center: [-[[Characters/DetectiveConan Main Character Index]] | [[Characters/DetectiveConanShinichiKudo Conan Edogawa/Shinichi Kudo]] |[[Characters/DetectiveConanMainCharacters Main Characters]] | [[Characters/DetectiveConanCoreRecurringCharacters Core Recurring Characters]] | [[Characters/DetectiveConanTokyoPoliceOfficers Tokyo Police Officers]] | [[Characters/DetectiveConanPoliceOfficersOutsideOfTokyoAndOsaka Police Officers Outside Of Tokyo And Osaka]] | [[Characters/DetectiveConanOsakanPersonalities Osakans]] | [[Characters/DetectiveConanTheBlackOrganization The Black Organization]] | [[Characters/DetectiveConanEaglelandLawEnforcement Eagleland Law Enforcement]] | '''Major Recurring Characters''' |[[Characters/DetectiveConanOtherRecurringCharacters Other Recurring Characters]] | [[Characters/DetectiveConanRecurringAnimals Animals]] | [[Characters/DetectiveConanOneSceneWonders One Scene Wonders]] | [[Characters/DetectiveConanPeopleFromNotableCases People From Notable Cases]]]]-]

[[folder:Sumiko Kobayashi]]
->''Voiced by Creator/YukoKobayashi / Yuko Khato (JP), Creator/StephanieYoung (EN)'', Erika Robledo (first Latin-American Spanish dub), Laura Orlázabal (third Latin-American Spanish dub)

Conan and the Detective Boys' homeroom teacher who later appoints herself as their "manager" when they're out solving cases.

[[spoiler:She later becomes Inspector Shiratori's girlfriend on account of him remembering that she was the girl he had helped in the past and not the physically similar Sato, whom he had been chasing after originally.]]
* AdaptationDyeJob: Her "Before" appearance was colored brown. Her "Middle" and "After" appearances had her colored as dark blue.
* {{Adorkable}}: Mostly when she acts as the "manager" of the Detective Boys or when she's with [[spoiler:her boyfriend, Shiratori]], who slips into borderline {{adorkable}} status around ''her''.
* AscendedExtra: Originally a one-shot character, it took her about ''150'' chapters to show up a second time[[note]]Not counting a brief cameo in one of Haibara's nightmares[[/note]], and she only becomes a semi-regular about 200 chapters after ''that''.
* BettyAndVeronica: [[spoiler:The gentle, ShrinkingViolet teacher "Betty" to Sato's aggressive, ActionGirl cop "Veronica" for Shiratori's "Archie". Subverted in that Shiratori ''thought'' that Sato was his true love he met in childhood...which was actually Kobayashi; besides that, Sato is an OfficialCouple with Takagi and Kobayashi ''thought'' Shiratori was only interested in her because of her resemblance to Sato. Thankfully, it was all sorted out.]]
* BewareTheNiceOnes: When she thought that [[spoiler:Shiratori was only with her because of her strong resemblance to Detective Sato, she remained cold and took quite the distance towards him until she remembered him as the boy who helped her.]]
** Even before that there's her whole SadistTeacher act, which worked so well that only the kids stepping into her rehearsals could undo it.
* ChildhoodFriendRomance: With [[spoiler:Shiratori]]. It's also rather curiously played with: [[spoiler: They met as children, yes, but unlike the other "childhood couples" they didn't know each other's names and lost sight of each other for ''decades'' after their chance encounter. When they met again, adulthood and time had changed them thoroughly (Shiratori was quite more prideful, Kobayashi was more shy and quiet), he had chased after another woman for a long time [[LovingAShadow believing that she was Kobayashi]], and [[ForgottenFirstMeeting she couldn't remember him]]. [[FirstGirlAfterAll He still recognized her as the "destiny girl"]] [[LoveAtFirstSight upon laying his sight on her]], she later recalled him, and then they got together.]]
* CoolTeacher: After her first episode she becomes a more fun, but still firm teacher to her students.
* CurtainsMatchTheWindows: Her "after" appearance has her with matching black-blue hair and blue eyes, rather than her original light brown hair/black eyes looks.
* {{Fangirl}}: Of Ranpo Edogawa.
* FirstGirlAfterAll: [[spoiler:Shiratori had always been in love with a girl he befriended when young, and after thinking for some time that she had grown to become Detective Sato ([[LovingAShadow leading to]] the LoveTriangle with Detective Takagi), it turned out "the girl" was Kobayashi-sensei, who to be fair [[IdenticalStranger looks a lot like Satou]].]]
* FlowerMotifs: [[CherryBlossoms Sakura]]. Which turn out to be [[spoiler:a huge hint that she was Shiratori's true love from childhood.]]
-->'''Kobayashi:''' "Because the sakura [[spoiler:is the symbol of police officers! Determined, kind, and dignified.]] It's a flower [[spoiler:of justice!]]"
* {{Foil}}: In contrast of Kobayashi-sensei's physical resemblance to [[spoiler:Sato]], however, the two women have almost entirely different personality traits: While Kobayashi-sensei is more gentle, softspoken, cautious, and careful in any given situation. [[spoiler:Sato is reckless, outspoken, daring, and impulsive.]]
* FriendToAllChildren: Even with her SadistTeacher act, she was only doing it for the children's sake. After she drops it, she plays the trope completely straight and all the kids adore her.
* FriendToAllLivingThings: During her SadistTeacher act, Kobayashi took care of the plants and fish in secret. Ayumi once caught her doing so.
* GirlyGirl: [[TomboyAndGirlyGirl Towards]] Sato's {{tomboy}}. Rather eagerly lampshaded by Yumi when they meet and she mistakes her for Sato, then is surprised by "Miwako"'s meekness.
* HiddenDepths: A retroactive example. [[spoiler:In Shiratori's flashback to when he first met Kobayashi-sensei, notice how she is acting more assertive when she catches the two '''grown up''' thieves.]]
* HotTeacher: More of a [[{{Moe}} cute one]], though.
* IdenticalStranger: Without her glasses, Kobayashi looks a LOT like Detective Sato. [[spoiler: Which troubles her when Shiratori shows interest in her, as she believes at first he [[LovingAShadow only likes her because of her physical similarity to Sato]]. (Not to mention, the reason why Shiratori mistook Sato as the girl he liked was ''because'' of her looks.)]]
* ManicPixieDreamGirl: [[spoiler: Subverted. She was this [[SavvyGuyEnergeticGirl to Shiratori]], but only when they were children. When they meet again as adults and properly get together, she has grown into a more shy and thoughtful person. Nevertheless, Shiratori [[TrueLove loves her just the way she is]].]]
* MeaningfulName: Sumiko, means "lovely child" which reflects her [[FriendToAllChildren fondness for children.]]
* {{Meganekko}}: A rare adult version, but Kobayashi is a cute teacher who wears big glasses.
* MoralityPet: {{Downplayed|Trope}}. While [[spoiler:Shiratori]] is far from evil or a being a straight up jerk, it's all but stated that [[MoeCouplet she brings out the best in him.]]
* NiceGirl: One of the friendliest people you'll meet in the series.
* OfficialCouple: With [[spoiler:Shiratori]].
* {{Otaku}}: Of mystery novels.
* PetTheDog: Even when she was making herself pass as a SadistTeacher, Kobayashi couldn't fully hide her kind nature, thus she watered the plants and fed the pet fishes in secret.
* RescueRomance: [[spoiler:With Shiratori. As children, he supported her when she stood up to shoplifters. As adults, he is one of the persons who protects her when she's targeted by a murderer because s{{he knows too much}} (complete with a DeclarationOfProtection), and him giving a TheReasonYouSuckSpeech to the culprit that sounded almost ''exactly'' like the one he gave to the shoplifters is what [[FirstGirlAfterAll makes her remember that he was the boy from their past]].]]
* SadistTeacher: Her JerkAssFacade. For the reason, see the ShrinkingViolet section.
* SavvyGuyEnergeticGirl: {{Subverted}} [[spoiler:with [[GentlemanDetective Shiratori]]. They ''used'' to fit in the trope [[spoiler: during [[ForgottenFirstMeeting their first and almost last encounter]] when [[ChildhoodFriendRomance they were children]] ]], but [[spoiler: when they found each other again 20 years later, Sumiko had grown into a much gentler ShrinkingViolet and Shiratori was more [[{{Pride}} arrogant]] than savvy. [[OfficialCouple They still got together]].]]
* {{Sensei chan}}: Downplayed. She only shows traits of the trope when she tries to be the manager of the Detective Kids, but otherwise she's pretty competent and serious in her job and her students love her to boot. [[spoiler: And since she has a boyfriend, there's nothing to worry in regards to the ChristmasCake part.]]
* ShrinkingViolet: After some really bad experiences in her former workplace, poor Kobayashi was so terrified of doing badly in parent meetings that she used to practice in the empty school at night with dolls. The Detective Kids thought she was a witch, though. (And Conan thought she was planning to kill someone else!).
* SingleWomanSeeksGoodMan: She was at first attracted to [[spoiler: Shiratori]] for his gentlemanly and protective behavior, but what made her ''actually'' fall in love with the guy was [[spoiler: seeing [[LawfulGood him]] deal a TheReasonYouSuckSpeech to the guy who [[HeKnowsTooMuch tried to silence her]], which [[ForgottenFirstMeeting lets her remember]] how he protected her as children in a very similar way ''and'' dispelled the belief that he was using her to forget about Sato.]]
* ThroughHisStomach: Once she and [[spoiler: Shiratori]] get together, she begins making ''bento'' lunch boxes for him.
* {{Tsundere}}: Type B. See her BewareTheNiceOnes section.

[[folder:Dr. Tomoaki Araide]]
->''Voiced by Creator/HideyukiHori (JP)''

The handsome son of Kogoro's doctor, with the bad luck of being introduced [[spoiler: in the case where his dad was murdered.]] After that, he's been seen around more than once, acting nice to almost everyone and being a possible RomanticRunnerUp.

[[spoiler:Later on, it's discovered that the Black Organization member, Vermouth, had been using his image as a cover during her manhunt for Ai Haibara.]]
* GambitPileup: [[spoiler:In the middle of ''two'' of these. See the main page for more details.]]
* HospitalHottie: He's one good-looking doctor. Just look at him!
%%* KindHeartedcatLover
* {{Megane}}: The glasses he wears highlight his physical beauty.
* NiceGuy: Even veering into a male {{Ingenue}} of sorts, since he's way too gullible sometimes.
* RomanticFalseLead: Was presented as one, thought he's much nicer than the standard. [[spoiler: And Ran was more interested in his sweater.]]
* RomanticRunnerUp: Sorry, dude. You're nice and all, we all know it... but you're just not Shinichi. [[spoiler: He doesn't win even in the ''Stranger from Ten Years Later'' OAV, no matter if it's canon or not.]]
* SympathyForTheDevil: When he returns to his normal life after [[spoiler: Vermouth]] tried to kill him and took over his identity for a while, most people don't notice a difference and comment on what a good person he is. This causes him to wonder whether his impostor is really evil.
* TallDarkAndHandsome: Not as "dark" as others, but pretty tall and ''very'' beautiful.

[[folder:Jodie Saintemillion]]
->''Voiced by Miyuki Ichijou (JP)'', Gigliola Mariángel (third Latin-American Spanish dub)

Ran and Sonoko's English teacher, an American young woman who's very pretty and friendly.

[[spoiler:She was believed to be the Black Organization's Vermouth, but is actually an FBI agent named Jodie Starling looking into its whereabouts; unaware that the real Vermouth has been using her image as a disguise to hunt for Ai Haibara.]]

[[spoiler:After her FBI status is revealed, she resigns from her teaching job and is seen taking part in cases; most of which involve the Black Organization.]]

[[ThemeNaming Mandatory Naming Note]]: Creator/JodieFoster [[spoiler:as [[Movie/TheSilenceOfTheLambs Clarice Starling]]]].
* AbsoluteCleavage: In the episode that Heiji met Jodie for the first time.
* AmicableExes: [[spoiler:With Shuichi -- they dated fives years prior to the story, but when Shuichi infiltrated the Black Organization, he started dating Akemi Miyano in order to gain more info, but [[BecomingTheMask fell in love with her]]. He decided to break up with Jodie, citing, "To be able to love two women at the same time…it's not that handy a personality". Despite this and Jodie's lingering feelings for him, they work well together with no friction from their past romance.]]
%%* AnimeAccentAbsence
* BadassDriver: Despite her [[DrivesLikeCrazy recklessness]], Jodie has pulled amazing feats when driving.
* BerserkButton: Whatever you do, '''DON'T''' [[spoiler:mention Vermouth in front of her, ''especially'' if you consider Vermouth a good person.]]
* BettyAndVeronica: [[spoiler:The straight-arrowed FBI agent ("Betty") to Akemi's mysterious AntiVillain from an amoral syndicate ("Veronica") for Akai's "Archie". Originally, Akai was in a relationship with Jodie and only dated Akemi to get more info about the Organization, but came to fall in love with her for real and decided to break up with Jodie as a result.]]
* BrokenBird: [[spoiler:Her parents are killed when she was still very little]], and that completely marked her life.
* CatchPhrase: "A secret makes a woman woman." Taken from [[spoiler: Vermouth]] which she uses as a reminder of her mission in life.
* DarkAndTroubledPast: [[spoiler:When she was a child, Vermouth killed her parents.]]
* DemotedToExtra: [[spoiler:She appeared A LOT more as Ran and Sonoko's teacher compared to her later appearances after she was revealed as an FBI agent. And that doesn't even count the times Vermouth was impersonating her.]]
* DrivesLikeCrazy: According to Akai, Jodie has no driving skills.
* EdibleThemeNaming: To give the [[spoiler:RedHerring]] that she is related to the Black Organization, her last name came from the famous wine-producing region [[http://en.wikipedia.org/wiki/Saint-%C3%89milion Saint-Émilion]].
* ForeignFanservice: Aside from suggestive outfit, [[TheTease she's quite flirty.]]
* FunnyForeigner: [[InvokedTrope Invoked]] by Jodie during her initial appearances to [[ObfuscatingStupidity make people put their guards down when facing her.]]
* HopelessSuitor: {{Zig zagged}}. [[spoiler:She and Akai ''were'' a couple, but he fell in love with Akemi and decided to break up with Jodie because of it. And after Akemi's death, Akai is still in love with her while Jodie's feelings for him have not disappeared.]]
* HotTeacher: She is an English teacher and wears quite slim-fitting outfits.
* LikeADaughterToMe: Seems to have this relationship with [[spoiler:James Black]], because her father had been his fellow FBI partner.
* NervesOfSteel: She is capable of keeping a cool head during crisis, like during a bus hijacking, [[spoiler:she never fell out of her role as Jodie Saintemillion.]]
* NoCelebritiesWereHarmed: She was named after both Clarice Starling, one of the main protagonists in ''Movie/SilenceOfTheLambs'', and actress Creator/JodieFoster who performed Starling's role in the movie adaptation of the same name.
* RedHerring: [[spoiler:Was a very obvious potential suspect for being Vermouth for a long time. A blonde American woman with suspicious skills investigating at Conan's school, she even used Vermouth's famous CatchPhrase, "A secret makes a woman woman". Turns out she's an FBI agent looking for Vermouth who picked the phrase up from her enemy.]]
* SecretKeeper: Quoting [[spoiler:Vermouth]]: "Secret makes a woman woman."
* SmartPeopleWearGlasses: [[spoiler:She's shown to be quite observant and, while not at the level of Shinichi or Akai, is effective at deduction and case solving, contributing to the progress of several cases. Also, once she became aware that it was very likely Akai had faked his death, she was able to deduce most of the trick he used unassisted.]]
* WalkingSpoiler: TheReveal [[spoiler:that Jodie is an FBI Agent is almost impossible to cover up without giving away too much]].
* WitnessProtection: [[spoiler:She was in one after seeing her parents killed by Sharon.]]
* WorkingWithTheEx: [[spoiler:With Shuichi -- see the AmicableExes section for more details, and despite their past romantic history, they occasionally work together when doing FBI-related assignments and do so in a professional and friendly manner.]]
* YouKilledMyFather: [[spoiler:The reason behind Jodie's intense hatred for Vermouth is because the woman killed her parents]].

[[folder:Rena Mizunashi]]
->''Voiced by Creator/KotonoMitsuishi (JP)''

A popular TV reporter. [[spoiler:She is actually Kir of the Black Organization, but is then revealed to be Hidemi Hondou, a CIA spy having infiltrated the organization.]]

[[ThemeNaming Mandatory Naming Note]]: See MeaningfulName, below.
* AlliterativeName: [[spoiler:Her real name - '''H'''idemi '''H'''ondou.]]
* BigSisterInstinct: To [[spoiler:Eisuke]], especially seen in [[spoiler:their flashback.]] She also has this to a boy who stalked her because she resembles his dead mother.
* BrokenBird: [[spoiler:Her father forced her to kill him to hide her true identity, then she had to shoot down one of her friends to "prove herself".]]
* DarkAndTroubledPast: [[spoiler:Forced to shoot her ''father'' to maintain her cover.]]
* {{Foreshadowing}}: [[spoiler: One of the openings shows her among a group of characters that are allies to Conan, hinting at her true allegiance.]]
* IntrepidReporter: [[spoiler: Actually, an ActionGirl and TheMole.]]
* MasculineGirlFeminineBoy: With [[spoiler: her young brother, Eisuke]] While Rena is an ActionGirl, [[spoiler: TheMole, a CIA agent who infiltrate Black Organization]], her little brother is [[CuteClumsyGirl cute clumsy]] DudeLooksLikeALady.
* MeaningfulName: [[spoiler: [[Film/JamesBond 007]][[labelnote:how?]]''nashi'' means ''nil'', or zero; ''re'' is the on-yomi for "zero"; and then [[SevenIsNana seven is na]].[[/labelnote]].]]
* MixedAncestry: Like [[spoiler:Eisuke, she is a third generation Japanese-American.]]
* ReverseMole: [[spoiler:She is actually a CIA agent]].
* SelfMadeOrphan: [[spoiler:Very tragic case, since it was less about hate and more about having to...]]
* ShootYourMate:
** [[spoiler: She shot her ''father'' to hide the fact that they were CIA [[TheMole moles]] infiltrating the Dark Organization.]]
** And again, she has to do this to [[spoiler: Akai. Per orders of ''That Man'' himself. Somehow, however, he survives.]]
* StrongFamilyResemblance: She looks a LOT like [[spoiler:[[http://www.detectiveconanworld.com/wiki/images/2/2a/Mrs._Hondou.jpg her mother]]]] with the exception of their hair color, which also means she and [[spoiler:her younger brother, Eisuke,]] look ''a lot'' alike, since [[spoiler:he]] also gained his looks from [[spoiler:their mother]].
* SugarAndIcePersonality: [[spoiler: She acts cold and efficient when with the Organization, but her kind nature often shines through. Hence why Gin and ''That Man'' don't always trust her.]]

[[folder:Eisuke Hondou]]
->''Voiced by Creator/JunkoNoda (JP)''

A NewTransferStudent to Sonoko and Ran's class who has a somewhat weak health and comes off to be extremely clumsy. He came to Japan to find his sister's whereabouts, [[spoiler: that sister being Hidemi Hondou of the CIA, aka, Kir of the Black Organization.]] He returned home shortly after the discovery, [[spoiler: but not before telling Conan that he knew of his true identity, and that he had developed feelings for Ran.]]

[[ThemeNaming Mandatory naming note]]: "Hondou" comes from Bondo (ボンド), the Japanese pronunciation of [[Film/JamesBond (James) Bond]], Eisuke from mystery writer Eisuke Kaito.
* BewareTheNiceOnes: [[spoiler: That one time he tracked down Mizunashi Rena's room and was willing to stab her with scissors just to find out where his sister was.]]
* BigSisterWorship: To [[spoiler: Hidemi]]. As seen in [[spoiler: their flashback, Hidemi]] has saved Eisuke's life several times, includes [[spoiler: giving a large portion of blood donation to him,]] which later becomes one of plot points that [[spoiler: Rena Mizunashi]] is really Eisuke's [[spoiler:sister, Hidemi.]]
* ButtMonkey: Always falling on his face.
* DarkAndTroubledPast: Always got in accidents, which at one point, almost led to him bleeding to death. Parents died when he very young. And his only relative, [[spoiler:his elder sister Hidemi]], mysteriously disappeared.
* DudeLooksLikeALady: And how-- go back above and check Kobayashi-sensei's picture, and he looks 80% like her.
* HiddenDepths: [[spoiler:Eisuke figuring out Conan's real identity as Shinichi Kudo proves his intelligence is on par with Shinichi/Conan and/or Heiji Hattori.]]
* HopelessSuitor: [[spoiler: His talk of bringing Ran to America with him may have been a bluff but he seems to recognize that it wouldn't have worked even if he had been serious about it.]]
* IllBoy: He had leukemia when he was a child, and he got better due to his older sister Hidemi's bone marrow donation. [[spoiler:This is a plot point as his blood type changed because of it: he used to be a O, but now he ''and'' Hidemi/Rena are AB.]] ''All'' story arcs related to him happened in hospitals. ''Even'' when he's not the one admitted.
* KansaiRegionalAccent: He was born and raised in Osaka.
* TheKlutz: He's constantly bumping into or falling over something.
* LoveAtFirstSight: [[spoiler:Tells Conan that he fell in love with Ran the first time he met her.]]
* LoveTriangle: [[spoiler: Invoked and subverted. In front of Conan, Eisuke claims to have fallen in love with Ran and that he wants to take her to America with him. When [[CrazyJealousGuy Conan/Shinichi reacts strongly]], he takes it as ''the'' hint he needed to guess his secret identity, and then both promises to be one of his {{Secret Keeper}}s and [[IWantMyBelovedtoBeHappy asks him to protect her in his stead]].]]
* MasculineGirlFeminineBoy: With [[spoiler: his older sister Hidemi. While Hidemi/Rena]] is ActionGirl, [[spoiler:TheMole, a CIA agent who infiltrate Black Organization]], Eisuke is [[CuteClumsyGirl cute clumsy]] DudeLooksLikeALady.
* {{Megane}}: Though he has such a high {{moe}} quotient and girlish looks that he could easily pass [[{{Meganekko}} as a female example.]]
* MixedAncestry: He is a third generation Japanese-American.
* NewTransferStudent: A new student of Teitan High School. The reason he transferred was to [[spoiler:investigate why reporter Rena Mizunashi looked remarkably similar to his missing older sister.]]
* NiceGuy: He's polite, kind, and sensitive.
* ObfuscatingStupidity: [[spoiler:Though he ''is'' clumsy by nature, more than one of his blunders weren't that casual.]]
* SecretKeeper: One of the ''few'' people who actually ''guessed'' Conan's secret identity correctly, and ''by himself''. This probably put his intelligence on par with Heiji!
* SmartPeopleWearGlasses: Eisuke was able to guess that Conan '''is''' Shinichi Kudo simply by looking at him and then [[spoiler:pretend he was going to take Ran to America with him, so he could get a response from him]]. It worked!
* StrongFamilyResemblance: He takes after his mother in appearance, which also means he and [[spoiler:her older sister, Hidemi aka Rena,]] look ''alot'' alike, since [[spoiler:she]] also gained his looks from [[spoiler:their mother]].

[[folder:Masumi Sera]]
->''Voiced by Creator/NorikoHidaka (JP)''

A rather peculiar NewTransferStudent to Ran and Sonoko's class. Like Shinichi and Heiji, she is a high-school detective.

She moved from England to Japan to find out what happened to her brother, Shuuichi Akai, after getting word of his supposed death.

[[ThemeNaming Mandatory Naming Note]]: Her name comes from ''Anime/MobileSuitGundam'''s Sayla Mass. The family connections are not coincidental.
* ActionGirl: Jeet Kune Do practitioner.
* ACupAngst: Exclaims "They're due to pop out every day now!" when her small bust is commented upon, and then she insists that her mother has quite large breasts and therefore hers will become this too.
* AmateurSleuth: Another high-school age detective.
* AmbiguouslyBi: Maybe. She ''did'' tease Ran and Sonoko when they first met by saying that Ran's just her type, and also has had quite a bit of LesYay with her. Meanwhile she also at one point jokes about having a secret boyfriend, and shows a rather strong fondness for Conan/Shinichi.
** In chapter 1002, when she meets Momiji, she's ''very'' fixated on [[BuxomIsBetter Momiji's really large chest.]]
* AwesomeByAnalysis: Like the other high-school age detectives of the series, if slightly less prone to dramatics, Sera has a very good eye for details and is able to largely work out and give detailed explanations of tricks used in crime scenes.
* BadassArmfold: Her CharacterTic is doing this. Most commonly while leaning on a wall.
* BadassBiker: Uses a motorcycle most of time, and once used it to '''smack''' a criminal about to kill Conan.
* {{Bifauxnen}}: She's an AmateurSleuth who at first is mistaken as a TroubledButCute guy until she shows up in Ran and Sonoko's class wearing the school's female uniform. In-story she's mostly seen as a tomboyish BikerBabe, and at least one of her friends (Sonoko) has found her pretty in a boyish way.
* {{Bokukko}}: As fitting with her appearance and personality, her [[UsefulNotes/JapanesePronouns pronoun of choice]] is the boyish "boku"
* ButNotTooForeign: She claims to have studied abroad in America, but Conan eventually realizes little slips, such as calling soccer "football", that confirm she was actually in the United Kingdom. The flashback to when Shinichi and Ran first met Masumi confirms her mother was British and that she was indeed born and raised in the UK. Interestingly, both her parents have Japanese surnames (Sera and Akai), implying that despite her mother's extremely European features, there's Japanese heritage on both sides of the family.
* CatchPhrase: Sera's catchphrase upon the conclusion of a case is "case closed".
* CuteLittleFangs: She has prominent canines that sometimes show when she smiles.
* {{Expy}}: WordOfGod confirmed she is based off of ''another'' ''Detective Conan'' character, [[Characters/DetectiveConanOneSceneWonders Natsuki Koshimizu]].
* {{Fangirl}}: When she was young she liked to read the "Night Baron" series, so she is fan of Yusaku Kudo.
* FedoraOfAsskicking: Almost always seen wearing a fedora and utilizes her motorcycle to capture criminals. Plus, she's a Jeet Kune Do expert.
* FindTheCure: [[spoiler:Her mother was shrunk to middle-school age with APTX, so Sera's other main goal is find an antidote.]]
* {{Foil}}: To Eisuke Hondou. Both are {{Mysterious Transfer Student}}s with a MixedAncestry and a keen eye for detail and turn out to have some connection to [[spoiler:an undercover agent in the Black Organization, both of them being the younger sibling to said agent (Eisuke to Hidemi Hondou aka Rena Mizunashi aka Kir, Sera to Shuichi Akai aka Rye]]. Eisuke is clumsy, resembles a [[LadyLooksLikeADude woman]], and has only met Ran and heard about Shinichi as a teenager; Masumi is athletic, often mistaken for a [[DudeLooksLikeALady man]], and it's heavily implied she met Shinichi and Ran as children.
* ForgottenFirstMeeting: It's been heavily alluded to that both Conan/Shinichi and Ran met her before when they were children, with both of them having vague feelings of recollection around her. [[spoiler: Confirmed later: they met in the beach around 10 years before the story began.]]
* GreenEyes: Which turn out to be inherited from her mother [[spoiler: Mary.]]
* HintDropping: Like many characters in the series, Sera has her secrets. Uniquely however, she seems to be actively trying to drop large hints about what they are so that Conan can figure them out, short of outright telling him.
* IntergenerationalFriendship: Appearance wise, anyway. Unlike most of the other high-schoolers in the series (that aren't known to be privy to Conan secretly being Shinichi), Sera treats Conan like a friend more her own age instead of a child ten years younger. That being said, there are many hints she is aware that Conan isn't the child he looks to be.
** All but outright confirmed that Sera knows Conan is actually her age. She still has the distinction of very openly treating Conan as an equal in any and all situations without tiptoeing around the issue. This is the friendliness that has had Sonoko teasingly label Sera a paedophile.
* LadyLooksLikeADude: Almost every character who meets her when she's in her casual clothing mistakes her for a boy at first. Her appearance even manages to confuse [[spoiler: Kaitou Kid who after mistaking her for a teenage boy, [[MuggedForDisguise knocked her out and stripped her of her clothes]] in order to impersonate her and ''still'' failed to notice [[UnsettlingGenderReveal until he was told]]]].
* MessyHair: Part of her {{Bifauxnen}} appearance.
* MixedAncestry: Born to a Japanese father and a British mother.
* MuggedForDisguise: It happens to her [[spoiler:in ''The Blush Mermaid Heist''. She's knocked out and stripped of her clothes by Kaitou Kid, who disguises himself as her and leaves her BoundAndGagged in the men's bathroom]]. It becomes a crucial plot point to solve the case, [[spoiler:as Kaitou Kid mistakenly [[LadyLooksLikeADude assumed she was a boy]] and thus made several mistakes when impersonating her]].
* NewTransferStudent: The newest student of Teitan High after Eisuke left for America. Her various behaviors and comments made by and about her suggests she's got quite a few plot relevant secrets and connections under her belt.
* NiceGirl: Sera has a cheery, sociable, boyish personality and is well liked by her classmates at Teitan High.
* NiceHat: Has a number of Fedoras.
* NoSenseOfPersonalSpace: Has shown a tendency to throw chummy hugs around her friends, or excitedly get right up in Conan's face when she's enquiring him about something.
%%* PantyShot
* PluckyGirl: Masumi is a {{biker babe}} {{bifauxnen}} who does her best to help her friends and look for both [[spoiler:her missing older brother]] and [[spoiler:a cure for her mother, who is an APTX survivor like Conan and Ai.]]
* RunningGag: About the above, people being unsure if she's a girl or a boy.
* SamusIsAGirl: On Ran, Conan and Sonoko, as well as the audience who don't find out concretely that she's female until after the first case she's involved in.
* SecretKeeper: Is mysteriously hiding an unusually mature-behaving young girl, whom Sera resembles, in the hotel room where she is living. Said child has specifically asked Sera to keep her presence hidden from others. [[spoiler: It's later revealed that the child is her mother, Mary Sera, who like Shinichi/Conan and Shiho/Ai was shrunk to a child-age. Both of them are looking for clues to find a cure for her.]]
* ShesGotLegs: Whether she's in her uniform or in normal clothes, there's quite the focus on her long legs.
* ShipperOnDeck: She teases Ran about her and Shinichi's relationship, and even calls her Shinichi's girlfriend.
* SomeoneToRememberHimBy: Implied. It's mentioned that [[spoiler:Shuichi Akai went to America and decided to join FBI after their father's death. Then in Chapter 972, Akai mentioned that their mother, Mary, was still pregnant when Akai left Japan for America. This means Masumi wasn't born yet by the time their father died.]]
* SpiritedCompetitor: In some degree, she seems to like rivalry or contests to see who is the winner.
* StrongFamilyResemblance: [[spoiler:As of Chapter 822, she's been revealed to be Shuuichi Akai's younger sister. Lampshaded and foreshadowed by the fact that Conan mentions that she looks like someone he knows when they first met.]]
* SuspiciouslySimilarSubstitute: According to WordOfGod, the entire reason Sera was created was to have a character similar to the aforementioned Natsuki, who had proven popular with fans, [[spoiler: but could no longer be used since she was arrested for killing someone]].
* {{Tomboy}}: When she said she was going to dress more girlishly for an ''Series/IronChef''-style show's taping she meant she'd be wearing ''girly panties''.
* XanatosSpeedChess: Masumi is quite quick-minded, coming up with clever plans and adapting them to sudden changes rapidly.

[[folder:Tooru Amuro]]
->''Voiced by Creator/ToruFuruya (JP)''

A PrivateDetective who first appeared posing as a waiter while helping a client with a case. He currently works at Café Poirot, and has become Kogoro's apprentice.

[[spoiler:He is, in fact, Bourbon of the Black Organization, and is shown to be one of the few operatives Vermouth is willing to work with. He is THEN revealed to actually be Rei Furuya, a member of the Japanese secret police having infiltrated the Black Organization]].
* AllOfTheOtherReindeer: [[spoiler:File 1011 reveals that despite having been born in Japan and having lived there his whole life, he was picked on as a child for having foreign ancestry.]]
* AmbiguouslyBrown: Amuro has dark skin, lighter than, but closer to Heiji's color. File 1011 reveals that one of his parents isn't Japanese.
* ButNotTooForeign: See AmbiguouslyBrown. However, he was born in Japan and and has lived there his whole life.
* TheApprentice: He asks to be Kogoro's apprentice to improve his deductional skills.
* AwesomenessByAnalysis: Amuro's deduction skills are on par with the likes of Shinichi/Conan and Heiji.
* BadassDriver: Amuro is a capable driver, capable of precisely swinging his car in front of another during a high speed car chase in order to stop it with a controlled collision.
* {{Bishonen}}: He is often described as "good-looking".
* GeniusBruiser: Besides being a great detective, he's also great at boxing, as shown when a single punch from him to an attacker's gut causes him to spray blood from the mouth and collapse.
* {{Homage}}: To [[Anime/MobileSuitGundam Amuro]], complete with white RX-7 which is ShoutOut to '''RX-7'''8-2. And with the same seiyuu, to boot. [[spoiler: His real name comes from both the character and seiyuu as well.]]
* IntergenerationalFriendship: He's implied to have had one with [[spoiler: none other than Elena "Hell's Angel" Miyano.]]
** File 1011 elaborates on this: [[spoiler:Elena felt a kinship with the young Rei Furuya since she was also part Japanese. She encouraged him to not feel discouraged by his foreign ancestry and try to get along with other children.]]
* LivingADoubleLife: A triple life in this case. On the surface, he maintains a civilian identity of Tooru Amuro, a cafe worker and amateur sleuth. [[spoiler:Secretly, he's a Black Organization operative codenamed Bourbon. His real identity, however, is that of Furuya Rei, a police officer of the Public Security Bureau, the Japanese secret police.]]
* MasterOfDisguise: [[spoiler:As Scar Akai. Apparently he had some help from Vermouth for that.]]
* TheMole: [[spoiler:He is Bourbon. And the fake Akai that was around for a while.]]
* MysteriousPast: Previously attended the police academy and was a friend of Takagi's deceased superior, Wataru Date. [[spoiler:Becomes even more mysterious after one wonders how someone from the police academy became a member of the Black Organization, or if he was already a member of the Organization before applying to the academy.]]
* TheReveal:
** [[spoiler:When he announces his Bourbon codename in front of a normally sized Shiho Miyano (Kaito Kid in disguise) during the Mystery Train arc.]]
** [[spoiler: Much later, it ''also'' turns out that he's actually a mole infiltrating the Black Organization. His actual allegiance is that it's not the FBI, which he has some disdain for; he seems to be working for the Japanese Secret Police instead.]]
* ReverseMole: [[spoiler:Yet another spy in the Black Organization.]]
%%* SherlockScan:
* ShoutOut: His name, [[Anime/MobileSuitGundam Amuro]].
* WellIntentionedExtremist: [[spoiler:In order to further infiltrate the Organization's inner circle, he planned to run over an elementary school teacher and hand over Shuuichi Akai to them. Akai calls him out on this, reminding him not to forget their true targets.]]
* WhamLine: During the Mystery Train arc. [[spoiler: "Bourbon... that's my codename!"]]