* AccidentallyAccurate: Accurately predicted the actual ending for [[Anime/FullMetalAlchemist Full Metal Alchemist]]: Brotherhood long before it aired.
* CrossDressingVoices: Averted; even though most of the boys are about 10 to 12, the voice actors are all adults who play their respective genders (Numbuhs 1, 2, and 4 are played by men and Numbuhs 3 and 5 are played by women).
* TheDanza:
** Cree Lincoln, voiced by Creator/CreeSummer, a rare non-live-action-sitcom use.
** Also somewhat worth mentioning is Creator/RachaelMacFarlane, who plays Numbuh 362 a.k.a. Rachel.
** Creator/DeeBradleyBaker as Bradley the Skunk.
* DawsonCasting: Played straight. None of the actors voicing the kids are actual children (but most have voiced kids on other shows. Creator/LaurenTom played Connie on ''WesternAnimation/KingOfTheHill'' and Cree Summer is best known as Elmyra Duff on ''WesternAnimation/TinyToonAdventures'', Penny on ''WesternAnimation/InspectorGadget'', and identical twins Tessa and Vanessa on ''WesternAnimation/PepperAnn'').
* ExecutiveMeddling: A positive example: The 2x4 technology came about when Creator/CartoonNetwork wanted the high-tech gadgets changed since [[ItsBeenDone it was already done on]] ''WesternAnimation/DextersLaboratory''. Creator Tom Warburton later stated that it became his favorite thing about the show.
* FakeBrit: And other nationalities...
** Numbuh One: voiced by Ben Diskin, who also voices Numbuh Two.
** Also, a Fake Aussie -- Numbuh Four, voiced by DeeBradleyBaker.
** [[FakeIrish Fake Scottish/Irish]] -- Numbuh 86, voiced by Jennifer Hale.
* FanNickname: Ashley and Ogie, the two unnamed girls of the Delightful Children From Down the Lane.
* HeyItsThatVoice: Try associating the voices from this show with other cartoons. It makes the show a lot funnier.
** [[Creator/BenDiskin Numbuh 1 and Numbuh 2]] are both [[KingdomHearts3DDreamDropDistance Young Xehanort]].
** Before becoming a ROOT ninja, [[Manga/{{Naruto}} Sai]] was bald and had a British accent.
** Kuki is voiced by LaurenTom, who plays Amy and her mom, Inez, on ''WesternAnimation/{{Futurama}}'', Connie (Kahn, Jr.) and her mom, Minh, on ''WesternAnimation/KingOfTheHill''. And in continuing with being vocally typecast as an East Asian[[note]]Chinese, Japanese, Korean, Laotian, etc[[/note]] girl and her mother in cartoons, Tom plays both Kuki Sanban and her mother, Genki in this series.
** Kuki's sister, Mushi, is TaraStrong.
** Numbuh Four is voiced by Dee Bradley Baker in one of the rare times that Baker isn't voicing an animal (Klaus the goldfish from ''WesternAnimation/AmericanDad''), doing announcer work on a game show (like ''Shop Til You Drop'' and ''Legends of the Hidden Temple''[[note]]yes, Numbuh 4 is the same guy who played Olmec[[/note]]), or doing animal vocal effects. He's also voiced [[VideoGame/{{Halo}} the Gravemind.]]
*** As well as Ra's al Ghul from VideoGame/BatmanArkhamCity
** Numbuh 86 and the computer (JenniferHale) is [[VideoGame/KnightsOfTheOldRepublic Bastila]], [[Franchise/MassEffect female Shepard]] ''and'' [[VideoGame/MetroidPrime Samus]].
** [[TheDanza Cree]] Lincoln (CreeSummer) is Penny in the 1980s ''WesternAnimation/InspectorGadget'' cartoon, Susie in ''WesternAnimation/{{Rugrats}}'', Elmyra Duff on ''TinyToonAdventures'' (and the reviled ''WesternAnimation/{{Animaniacs}}'' spin-off ''Pinky, Elmyra, and the Brain''), Max in ''WesternAnimation/BatmanBeyond'', Dr. Young, from VideoGame/BatmanArkhamAsylum, and, on the more adult-oriented side of things, the slutty, racist Foxxy Brown on ''DrawnTogether'' and the suicide bomber stripper Cookie [=BaBoom=] on the 1990s cartoon ''The Mask''.
** Numbuh Five's father has a voice that is a caricature of Creator/BillCosby, with all of his speech patterns. The voice of Dr. Lincoln is Creator/KevinMichaelRichardson. Numbuh Five's voice actress, Creator/CreeSummer, is connected to Creator/BillCosby by the SpinOff show ''Series/ADifferentWorld''.
** I'm surprised that Maurice [[WesternAnimation/TeenTitans didn't start using a sonic cannon.]]
** Not to mention that in "Operation: W.H.I.T.E.H.O.U.S.E.," [[spoiler:Numbuh One's future son]] is GregCipes, a.k.a. [[WesternAnimation/TeenTitans Beast Boy!]]
** Stickybeard is voiced by none other but MarkHamill (Luke Skywalker, The Joker on the 1990s ''Batman'' cartoon, [[WesternAnimation/TimeSquad the Larry 3000]][[note]]interesting fact: ''TimeSquad'' was ending its run around the time ''KND'' came on[[/note]], etc).
** Numbuh 362 is [[WesternAnimation/AmericanDad Hayley Smith]] and, in RealLife, is the sister of SethMacFarlane (the man behind ''WesternAnimation/FamilyGuy'', ''WesternAnimation/TheClevelandShow'', ''WesternAnimation/AmericanDad'', ''Film/{{Ted}}'', and the prototypical ''Family Guy'' cartoon "Larry and Steve" and "The Life of Larry")
** Numbuh 1's dad is Creator/FrankWelker, the first and current voice of [[{{Transformers}} Megatron]].
** Lizzie is GreyDeLisle; you may recognize her as Tootie on ''TheFairlyOddparents'', Frankie from ''WesternAnimation/FostersHomeForImaginaryFriends'', Daphne from the ''WesternAnimation/ScoobyDoo'' movies and some of the series, Mandy from ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'', and Catwoman from VideoGame/BatmanArkhamCity, among others.
** [[DaranNorris Count Spankula]] is [[WesternAnimation/TheFairlyOddparents Cosmo]] and Gordy the janitor on ''Series/NedsDeclassifiedSchoolSurvivalGuide''.
** Hello? MauriceLaMarche as Father?
** Apparently Numbuh 74.239 [[Franchise/{{Naruto}} became a ninja and got a sharingan eye after his best friend was crushed by a boulder.]]
** In "Operation: C.H.A.D.", Numbuh 274's parents have the same voice actors as Dexter's parents from ''WesternAnimation/DextersLaboratory''.
** 274/Chad himself is voiced by Jason Harris, host of Nickelodeon's short lived revival of ''[[Series/DoubleDare1986 Double Dare]]'', ''Double Dare 2000''.
* KeepCirculatingTheTapes: It's been released on DVD a few times, a couple of random "Best of" DVD's, but never in box-sets or a complete season. The entire series is available on iTunes and the Playstation Network though, and the first 3 seasons have been put on Netflix.
* LoadsAndLoadsOfRoles: Once you start noticing the nuances, Creator/CreeSummer, Creator/DeeBradleyBaker, TomKenny, and JenniferHale are ''everywhere''.
* NamesTheSame: No, This Father not the BigBad from ''Manga/FullmetalAlchemist'', although their roles in their respective series are surprisingly similar.
* TalkingToHimself:
** Happens more than often for Numbuh 4, as Creator/DeeBradleyBaker voices dozens of other extra roles, including villains (notably the Toilenator), operatives, and background characters.
** Numbuh One and Numbuh Two. Both are voiced by Ben Diskin.
** Cree Summer voices both Abigail and her sister [[TheDanza Cree]].
** The Delightful Children from Down the Lane's voice actors are three of the Sector V voice actors.
* TheyWastedAPerfectlyGoodCharacter: WordOfGod says that they "never got around to telling Numbuh 60's story".
* WhatCouldHaveBeen:
** Numbuh Three was originally going to speak only in Japanese (with subtitles), while Numbuh Five was originally going to be TheVoiceless. The reason both those ideas were scrapped was because it would have resulted in both girls having no lines and possible protests over alleged sexism (and possible racism, since both girls aren't white [Abby is African-American and Kuki is Japanese]).
** "Operation: S.P.A.N.K.E.N.S.T.E.I.N." was originally a thirty-minute Thanksgiving special, "Operation: S.P.A.N.K.S.G.I.V.I.N.G.".
** Also, Lizzie's original character design was changed before her debut episode was made. Apparently her old appearance was too ugly for the execs.
** One episode, "Operation: T.R.E.E.S.", an episode-long ShoutOut to Creator/DrSeuss and specifically to ''The Lorax'', was [[IncrediblyLamePun axed]] early in its production, due to it running right on the heels of the movie of ''HortonHearsAWho''.
** The [[JokeCharacter Toiletnator]] was originally going to be a one-time character whose only appearance would have been in "Operation N.O.-P.O.W.U.H."
** Grandfather was originally going to have a wife.
** [[http://networkedblogs.com/LavA8 According to this one blog post by Tom Warburton,]] some of the villains (Mr. Wink and Mr. Fibb, Mrs. Goodwall, Professor XXXL) having animal parts was "part of a larger story arc that fell by the wayside."
* TheWikiRule: [[http://knd.wikia.com/wiki/Main_Page The KND Code Module.]]

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