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The resident [[TheSmartGuy Smart Guy or Girl]] in LiveActionTV series.

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* ''Series/AgentsOfSHIELD'': Both halves of "Fitzsimmons": Leo does the physics and engineering stuff, Jemma has two [=PhDs=] and handles biochem.
* ''Series/{{Alphas}}'': Gary Bell is a high-functioning autistic 20-year-old with [[{{Technopath}} transductive]] powers.
* ''Series/{{Arrow}}'': Felicity Smoak -- an MIT double major early graduate whose been taking computers apart since she was seven -- acts as the hacker and computer specialist for Team Arrow. Generally [[{{VigilanteMan}} Oliver]], [[{{MilitarySuperhero}} Diggle]] and their other allies will hit the streets [[{{MissionControl}} while she mans the comms]] [[{{NonActionGuy}} from afar]], although she does sometimes go into the field when needed.
* ''Series/TheATeam'': Face filled this role as the [[TheScrounger scrounging]] ConMan who always had a financial scheme up his sleeve. There are episodes where he [[{{Nerdgasm}} geeks out]] over the intricacies of his latest con, and he was shown to be great with doing math in his head quickly. Ironically, Face was also the team's [[HandsomeLech handsome]] [[TheCasanova womanizer]].
* ''Series/BarneyMiller'': Dietrich was a master of low-key wit and arcane knowledge, tossed off in a kind of humblebraggy way.
* ''Series/{{Bones}}'': Also plenty to go around. Brennan often fills the role, but Hodgins or Zack have as well, or one of the rotating 'squinterns'.
* ''Series/TheBoys2019''. Lampshaded by Hughie Campbell when he offers to be [[MissionControl the tech guy in the van]] with the [[BuffySpeak thing in his ear]] for Billy Butcher. Ironically, he does take on this trope (sharing it with Frenchie) due to his previous job of being a sales clerk in an audio-visual store. For instance when Frenchie wants to bug Popclaw's apartment, Hughie points out that a simpler way would be to install their own router which they can use to hack into her webcam.
* ''Series/BreakingBad'': Saul and Skyler both filled this role.
** Skyler uses an off-hand remark about having two phones to figure out that Walt is a drug dealer, convinces the IRS that fraudulent accounting by a former friend was due to incompetence on her behalf and spins a story about Walt having a gambling problem.
** Saul, meanwhile, portrays the images of a sleazy lawyer but is in fact [[BunnyEarsLawyer highly competent]], convincing Walt and Jesse to set up a drug empire and helping Skyler obtain a carwash to help launder said drug empire money through.
* ''Franchise/{{Buffyverse}}'':
** Had Giles, and the spinoff ''Series/{{Angel}}'' had Wesley. Watchers are pretty much Smart Guy incarnate. ''Series/{{Angel}}'' also had Fred, a mixture of the Smart Guy and The Chick. In addition, Anya could be considered a Smart Guy when talking about demonic matters (with which she has personal experience), although less so in most other matters (such as "how to conduct myself in human society"). Willow was also very smart, as well as magical. Giles was better educated but functioned more as their [[{{Mentors}} mentor]], whereas Willow was clever/good with computers.
** Between Seasons 6 and 7, Dawn had taken on this role, along with a bit of WrongGenreSavvy.
** Gunn got in on the Smart Guy role mixed with a bit of GeniusBruiser in Season 5 of Angel, after his brain upgrade.
* Creator/{{Chespirito}}'s shows
** Profesor Jirafales is the smartest of the characters in ''Series/ElChavoDelOcho'', with knowledge even superior that the needed for his job as elementary school professor. Among the children Chilindrina is probably the most intelligent but more in the sense that she’s cunning. Ñoño is book-smart but more naïve although he does have good grades unlike Chilindrina.[[note]] Chilindrina’s bad grades are probably consequence of laziness and not lack of intelligence.[[/note]].
** Botija is the smartest character of ''[[Series/{{Chespirito}} Los Caquitos]]'' as constantly correct the other characters for their lack of knowledge, especially his accomplice Chompiras and his wife Chimoltrufia that are exceptionally dumb. Licenciado Morales is also very smart, naturally as he's the local District Attorney.
* ''Series/ChouseishinSeries'':
** ''Series/ChouseishinGransazer'': Akira Dentsuin / Sazer-Remls tends to play this role among the Gransazers. Being a doctor, he often applies his medical knowledge whenever one of them gets injured.
** ''Series/GenseishinJustiriser'' has Shinya Hiraga / Riser Gant, who acts as the strategist of the Justirisers and is also a robotics expert on the side.
** ''Series/ChouseiKantaiSazerX'': Kane Lucano / Beetle-Sazer plays this role among Sazer-X, acting as their main mechanic and technician for their [[HumongousMecha Ryuuseishin]]. Although Remy and [[BrotherSisterTeam Ein and Zwein]] also have enough mechanic expertise to help with repairs on occasion.
* Series/{{Chuck}}: Stephen and Ellie both fit. Stephen's work made for the entire plot of the series and Ellie -- [=PhD=], MD -- is one of the only people that can understand said work.
* ''Series/CriminalMinds'': Dr. Spencer Reid fits this to a T. Although, ironically, he's the tallest person in the cast.
* ''CSI'':
** Everyone on all the shows in this franchise is smart, but each has a stand-out one or two:
** ''Series/{{CSI}}'': Gil Grissom and Ray Langston. Now DB Russell is getting in on it too.
** ''Series/{{CSI NY}}'': Hawkes and Mac. Sometimes Sid too.
* ''Series/DawsonsCreek'': Both Joey and Andie.
* ''Series/DoctorWho'':
** The Doctor, obviously.
** Some of his companions fulfill this trope, too, most notably Susan (his granddaughter), [[Webcomic/GirlGenius Zoe Heriot]], Romana (who might be smarter than the Doctor himself), [[InformedAbility allegedly]] Adric, and Martha.
* ''Series/{{Dollhouse}}'': Although many of the workers are intelligent, Topher is the one who best fits this trope.
* ''Series/GameOfThrones'':
** Talisa Maegyr is an adept healer.
** Of all Daenerys' loyalists, Ser Barristan has by far the closest ties to Westeros, making him extremely valuable for more than just his proficiency with violence.
* ''Series/{{Glee}}'': At first it looked like Artie would be TheSmartGuy for the show's New Directions, but lately the role has started to shift over to organiser extraordinaire (see: 'Le Jazz Hot', Burt and Carole's wedding, the 'Barbra Streisand' flash mob) and genuinely bright kid Kurt Hummel.
* ''Series/HomicideLifeOnTheStreet'': Most prominently Pembleton, who was teaching at Fordham by the time of the 2000 reunion movie. Also John Munch, who would be the undisputed king when he moved to ''Series/LawAndOrderSpecialVictimsUnit''.
* ''Series/HouseOfAnubis'': Fabian is the smartest person on Sibuna and is typically the one to solve puzzles and move the team ahead.
** In the third season movie, Mara seems to become this once she joins the team, to Fabian's displeasure and jealousy, as she's even smarter than he is.
* ''Series/{{JAG}}'': No one in particular, anyone of the regulars could be the TheSmartGuy for the episode of the week.
* ''Series/KamenRiderBuild'': ScienceHero Sento Kiryu is this, as he's the one who creates the {{Transformation Trinket}}s and weapons used by him and the other Kamen Riders. There's also [[IntrepidReporter Sawa Takigawa]], who isn't a scientific genius like Sento but a crafty reporter who uses her connections to gather information for Team Build. In episode 28 she and Sento also pull off a pretty impressive plan where they [[spoiler:leak half the information on Sento's new form to the villains (who are holding an innocent family hostage). While the villains think they have the advantage, Sento and Sawa have [[TheBigGuy Grease]] go and rescue the family, at which point Sento reveals the other half of his new form and trounces the villains' trump card.]]
* ''Series/{{Leverage}}'': Hardison is the computer hacker geek of the show's [[FiveManBand Three-Men-and-Two-Women Band]], and pinchhits as the DeadpanSnarker when needed.
** He occasionally faces off against his ArchNemesis [[Creator/WilWheaton Chaos]], and they end up working together once.
* ''Series/LincolnHeights'': Lizzie Sutton falls under TheSmartGirl version.
* ''Series/{{Lost}}'': Sayid Jarrah is an expert in communications technology. In his time on the Island, he has built several radios and fixed a computer. Physicist Daniel Faraday also counts, besides his amnesia and moments where he isn't much clear while explaining. It's also taken up to eleven in Season 4 when he takes a look at a chopper and states that it can fly and even more when he dismantle an H-Bomb, taking its core, later in Season 5.
* ''Series/{{Merlin|2008}}'':
** The titular character. He fits into the third variety for the most part (something of a SquishyWizard[[note]]as his name implies, he's a powerful warlock but, even though he's an IronButtmonkey, he's not too great at fighting without magic[[/note]] and, off and on, he uses a [[BoomStick magic staff]] [[ContinuityNod aquired in an early episode]]) though he has shades of the fifth type, too. In-universe, he's generally regarded as [[ObfuscatingStupidity 'mentally afflicted']] and [[DeadpanSnarker enjoys taking jabs]] at... pretty much everyone. [[LaserGuidedKarma This does not go unpunished.]]
** Gaius, who is not as powerful as Merlin, but knows a lot about magic. He is also the [[TheMedic the court physician]] and teaches Merlin about medicine.
* ''Series/{{NCIS}}'': On Team Gibbs, Tim is at the top of the list, though neither Ducky nor Abby are slouches.
* ''Series/NoahsArc'': Chance fits this role, being a college professor continually in pursuit of his academics. He also is a bit more withdrawn compared with the rest of the cast, and often will explain more complex matters to the rest of the group (often doubling as MrExposition in the process). Though he doesn't wear them often, hes also the only one of the main cast who wears glasses, and is fairly thin compared to the more muscular (and in Alex's case, thicker) cast members.
* ''Series/NickyRickyDickyAndDawn'' has Ricky, the second-oldest of the titular Harper quadruplets.
* ''Series/{{Numb3rs}}'': Charlie Eppes.
* ''Series/OuterBanks'': Pope is described as “the brains of the operation”, being the smartest of the Pogues and with a scholarship on the line.
* ''Series/ParkerLewisCantLose'': Has Jerry. Although his friends Parker and Mikey are not dumb (actually it could be argue that they have more social and emotional intelligence than Jerry) in regards of cold logical intelligence and computer/science sawyness there's no doubt that Jerry is by far the smarter, as he is also the typical nerd.
* ''Franchise/PowerRangers'':
** [[Series/MightyMorphinPowerRangers Billy Cranston]] was the first PR smart guy, and it's hard to find one since who's embodied the trope as much as him. He invented their communicators, built a FlyingCar and a body-swap machine in his spare time, and was a near-constant lifesaver when it came to fixing out-of-control Zords or teleporting into other dimensions.
** Trip from ''[[Series/PowerRangersTimeForce Time Force]]'' is also a good example. Cam from [[Series/PowerRangersNinjaStorm Ninja Storm]] started out as this before getting the SixthRanger suit. When pulling double-duty proved exhausting, he came up with the unique solution of making a ProjectedMan version of himself to pick up the slack.
** T.J. from ''Series/PowerRangersInSpace'' is another example. He's managed to save the team with a well-thought out strategy on more than one occasion, including against the PsychoRangers.
* ''Series/PrettyLittleLiars'': Spencer and Aria both fit the bill, depending on the situation. [[spoiler: Mona]] is the villain version of this for the A team.
* Connor Temple from ''Series/{{Primeval}}'' is not just a nerd, but also a genius.
* ''Series/{{Revolution}}'': Aaron Pittman and Maggie Foster share the role in "[[Recap/RevolutionS1E1Pilot Pilot]]", "[[Recap/RevolutionS1E2ChainedHeat Chained Heat]]", and "[[Recap/RevolutionS1E3NoQuarter No Quarter]]". Aaron is quite knowledgeable about electronics, which is a skill rendered almost obsolete in the wake of a 15-year-long worldwide blackout. Maggie is quite knowledgeable about medicine in general. However, once [[spoiler: Maggie dies]] in "[[Recap/RevolutionS1E4ThePlagueDogs The Plague Dogs]]", Aaron becomes the one Smart Guy on Team Matheson. After "[[Recap/RevolutionS1E10NobodysFaultButMine Nobody's Fault But Mine]]", [[spoiler: Rachel Matheson]] becomes a contender for this trope.
* ''Series/SavedByTheBell'': Jessica "Jessi" Spano is a straight-A student and the stereotype of the StrawFeminist too. Screech is the stereotype of the nerd but he is hardly considered intelligent outside his academic achievements due to being the ButtMonkey of the series.
* ''Series/TheSarahJaneAdventures'': [[Series/DoctorWho Sarah Jane]] is quite brilliant, although not exactly in the genius sort of way (that title goes to her [[TeenGenius son]]).
* ''Series/Scandal2012'': Huck has aspects; Harrison Wright has others.
* ''Series/TheSecretCircle'': Diana. She is the one who is the brains and logic of the Circle.
* ''Series/{{Sharpe}}'': Harris of the Chosen Men is a former teacher who joined the army to escape debts. He speaks at least three languages and is the one who usually quotes philosophers or is found reading.
* ''Series/{{Sherlock}}'': Being a rare two-person example, [[InsufferableGenius Sherlock]] and [[BadassAdorable John]] could qualify the BadassBookworm version of this.
** Oh, and John doubles as TheLancer, since he's the sane one. Plus, he's also Sherlock's NumberTwo.
* ''Series/{{Smallville}}'': [[PlayfulHacker Chloe Sullivan]] was the show's original Smart Guy. She also defies the unattractive part, being elected prom queen and five out of eight of the same-generation main characters has expressed romantic interest in her (and she ended up [[spoiler:marrying two of them]]). In later seasons, the role was shifted to two people: GadgeteerGenius [[OmnidisciplinaryScientist Emil Hamilton]] (who was also TheMedic, first appearing in Season 8 but never got main character status) and [[TheBaroness Tess Mercer]], a [[TheAtoner reformed villain]] (HeelFaceTurn in late Season 9) and EvilGenius who served as the team's {{Chessmaster}}, [[TheCracker computer hacker]], [[CorruptCorporateExecutive backer]], and resident ManipulativeBitch.
* ''Series/StargateAtlantis'':
** [=McKay=] is probably the most egregious example on modern TV; often, the other characters will just sit around and threaten him until he comes up with a plan.
** Samantha Carter is more BadassBookworm than just The Smart Guy; Zelenka is [=McKay=]'s much more reserved and polite second in command. The remaining scientists tend to fit a different trope, in no small part as they are not members of the FiveManBand.
* ''Series/StargateSG1'': Samantha Carter and Daniel Jackson share the role of TheSmartGuy. They do have their own specialties, however, with Samantha Carter being the technology expert/astrophysicist and Daniel Jackson being the archaeologist/anthropologist/linguist. Both of them can be considered [[BadassBookworm Badass Bookworms]].
* ''Series/StarTrekTheOriginalSeries'': Has ''[[TropeNamer The]]'' [[TheSpock Spock]], who's the science officer on the ''Enterprise''.
* ''Series/StarTrekTheNextGeneration'':
** Data. Given that he's an android, with a supercomputer in his head, he can usually come up with solutions that would be at best impractical if they ''didn't'' have an android on the crew.
** Geordi [=LaForge=] and Dr. Crusher both have elements of this as well. As the ship's chief engineer, Geordi is the resident GadgeteerGenius and the one who usually repairs Data. Dr. Crusher is obviously TheMedic and is also the mother of [[CreatorsPet Wesley]].
** Wesley plays with this one; although he's smart and the equal of at least the junior crewmembers on a technical basis, he lacks the credibility (partly due to his young age) to get the people with real power to listen to him. Usually Data will listen to him (because Data is only evaluating Wesley's evidence on its face alone), but occasionally Geordi, Riker, or Picard will be convinced -- but ''never'' Worf.
* ''Series/StarTrekVoyager'': Does not have one clear cut [[TheSmartGuy Smart Guy]], but several members of the crew display various aspects of it. Tuvok is a Vulcan and therefore is naturally TheSpock. B'Elanna Torres is [[WrenchWench the chief engineer]] and therefore the most tech savvy. The Doctor is obviously TheMedic and, like Data, his "brain" is a literal supercomputer. Finally, as a former Borg drone, Seven of Nine has access to the combined knowledge of every alien race that the Borg have ever assimilated.
* ''Series/StarTrekPicard'': Raffi Musiker had formerly worked for Starfleet Intelligence, so she's the most analytical person on ''La Sirena''. She does the information-gathering for the team and is TheStrategist.
* ''Franchise/SuperSentai'' usually has one member of TheTeam who's the brains (typically either the blue or the green), often because they're the most bookish of the team.
** The ''Series/ChoujuuSentaiLiveman'' are an entire team of this. They're all genius university students who built their own transformation gear and mecha. The villains they fight meanwhile are a team of {{Evil Genius}}es.
* ''Series/TopGearUK'': James May, whose interest in detail and facts borders on obsession and alternately amuses and bores his [[BookDumb non-scholarly]] co-presenters.
* ''Series/{{Torchwood}}'': Ianto Jones and Toshiko Sato both fit this.
* ''Franchise/UltraSeries'' examples:
** Mitsuhiro Ide from ''Series/{{Ultraman}}'' is the original Ultra-example, as he was the guy who created the various gadgets that Science Patrol used against the MonsterOfTheWeek, and would fix their hi-tech weapons and planes. He also did double duty as the PluckyComicRelief.
** Amagi from ''Series/UltraSeven''. His I.Q. is stated to be 200, and he serves as the strategist for the Ultra Garrison. On the other hand, he's also a NonActionGuy and tends to be rather twitchy.
** ''Series/UltramanTiga'''s Masami Horii shared the role with TeenGenius [[MissionControl Jun Yazumi]]. In SequelSeries ''Series/UltramanDyna'', Tsutomu Nakajima succeeds Horii, although Kouhei Kariya's expertise in archaeology could qualify him a little.
** Koji Doigaki from ''Series/UltramanCosmos''. Although also a FatComicRelief, his expertise in science and technology was critical in a number of missions against Chaos Header or subduing a rampaging kaiju.
** Teppei Kuze from ''Series/UltramanMebius'', a medical student and monster nerd who knew pretty much everything about every kaiju that had appeared in a previous show. Since the show has a lot of returning monsters, he got to show off his expertise quite a bit.
** ''Series/UltraGalaxyMegaMonsterBattle'' divided the role between Oki and Kumano, with the former being a kaiju nerd and the latter acting as the [[CoolSpaceship Pendragon]]'s mechanic.
* ''Series/TheVampireDiaries'': Stefan. He is intelligent, academic and scholarly.
* ''Series/{{Vikings}}'': Due to his upbringing as a [[GoodShepherd Catholic monk]], Athelstan is the most well-educated character on the show. Unlike the Vikings, he can read and write multiple languages as well as speak them, spent time in Charlemagne's court, and displays a great deal of knowledge on cultures and religions outside of his own, including Ancient Rome and its predecessors. By the time of Athelstan's capture in Wessex, he has also become the foremost expert of Saxon blood on the Norsemen, their culture, and paganism in general.
* [[BlackAndNerdy James Trivette]] of ''Series/WalkerTexasRanger'', who prefers the modern approach to tracking down the bad guys, typically using computers and cellphones.
* ''Series/WeirdScience'': Lisa has superhuman intelligence, as she was designed as such. Not that Wyatt and Gary are dumb as they are actually {{Stereotypical Nerd}}s but they do can be very naïve and/or immature. The only really dumb character is Chett.
* ''Series/TheWestWing'': No one of the regulars was shown as unintelligent, but Toby was the only one who's intellect was regularly shown to rival that of President Bartlett.

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