%% Administrivia/ZeroContextExample entries are not allowed on wiki pages. All such entries have been commented out. Add context to the entries before uncommenting them.
[[quoteright:350:[[Series/TheBradyBunch http://static.tvtropes.org/pmwiki/pub/images/bobbyoliver.jpg]]]]
[[caption-width-right:350:The kid on the right's mad because he used to be the [[KidAppealCharacter kid on the left]].]]

->''"''Do?'' What does he ''do?'' Why, he's ''adorable!'' And people will ''love'' it!"''
-->-- '''Dr. Forrester''', ''[[Series/MysteryScienceTheater3000 MST3K]]''
%% One quote on the main page. Rest can be added to the quote tab.

Cousin Oliver is that inexplicable kid added to the show's roster, usually in an attempt to liven up an aging cast with a character the younger demographics can ([[TotallyRadical supposedly]]) relate to. However, such a character is likely to upset the dynamic of the show, especially since his only job is to be cute and innocently wisecracking. It's far too easy for the writers to miss "sweetly precocious" and tumble right into "overbearing and annoying", especially to the show's long-time fans (who don't see why this kid should be taking attention away from their favorite characters anyway). Depending on how deft the writers are at making him "lovable," Cousin Oliver can become a fan favorite or TheScrappy ([[CreatorsPet or worse]]).

Sometimes Cousin Oliver is the logical result of a character's season-long pregnancy arc. Once the writers have exhausted the possibilities of new baby hijinks, the infant undergoes SoapOperaRapidAgingSyndrome--or even a PlotRelevantAgeUp if the setting allows for it--so he can become a regular member of the cast. This doesn't always make it better.

Compare KidAppealCharacter, who is generally there from the beginning. If the addition is a literal cousin, see also {{Nephewism}}.

Often a form of JumpingTheShark.

If there's actually an in-series point to the character, compare CainAndAbelAndSeth.

[[https://youtu.be/GQRb6gN28oM "Vulture's Secret History of Television" Episode 1]] is a Website/YouTube essay all about Cousin Oliver Syndrome.


[[folder:Anime and Manga]]
%%* Timothy Hearst in ''{{DGray-Man}}''.
* Subverted in ''Anime/DigimonAdventure''. Despite Hikari appearing much later than the other Digidestined there was already a younger child on the team with Takeru. ''Digimon'' is good at avoiding this. The child character in a show about teens or young adults is often bound straight for {{Scrappy}}dom from the word go, but the Digimon kids usually escape it.
* ''Manga/ToLoveRu'' has Celine: Rito's [[PlantAliens giant carnivorous plant]] that apparently turns into a humanoid toddler as part of her life cycle. Thankfully, she doesn't throw off the cast dynamic much, as her presence is generally limited to [[HilarityEnsues wreaking havoc.]]
* Chibiusa in ''Manga/SailorMoon'', came from the future and brainwashed Usagi's family into thinking she was her little sister/cousin (depending on the translation). Even if the intervention of Luna -Usagi's magic talking cat- prevents Usagi from falling under the influence of Chibiusa's magic, making her for some time the only one aware of Chibiusa's nature [[spoiler: (even if Usagi learns only much later the whole story and that Chibiusa is really her daughter from the future)]].
* Several chapters into ''Manga/SchoolLive'' Yuuri literally remembers she has a little sister. She had forgotten her due to the zombie apocalypse. She later saves her from a zombie-infested school and Ruu becomes a TagalongKid. The series compares [[KiddieKid the notoriously immature]] Yuki to Ruu and explains that Yuki was a ReplacementGoldfish, and Ruu explains why Yuuri is such a CoolBigSis. [[spoiler:In a dark twist it is heavily implied Ruu is DeadAllAlong and that Yuuri is hallucinating a teddy bear is her little sister]].

[[folder:Comic Books]]
* Danny Chase in the comic book version of ''ComicBook/TeenTitans''. He was even designed to ''look'' like Cousin Oliver. Combine this with abrasive personality, lack of codename, costume, or original powers and he quickly became a CreatorsPet, as well. In other words, Danny Chase is to the Teen Titans what Zan, Jayna, Wendy and Marvin are to the ''{{WesternAnimation/Superfriends}}'' Justice League. At least they tried to be heroes; Chase tried to be holier-than-thou. He became Black Lantern fodder.
* Damian Wayne in the ''Franchise/{{Batman}}'' Comics, made Robin at age 10, just as Tim Drake was growing out of the tights. Lampshaded in ''Red Robin'' #14, where the oldest and youngest of the first three Robins refer to each other as Marcia and Cindy, and lock Damian out of a file with the password "cousinoliver".
* Chris Kent when he was introduced in [[Franchise/{{Superman}} Superman's Comics]]. It didn't help that [[ComicBook/{{Superboy}} Kon-El]] had been killed off recently. Following the trope to the letter, he eventually caught a case of PlotRelevantAgeUp.
* Subverted with [[FanNickname Kid-Loki]] who is just the normal Loki reincarnated as his kid self (with only his childhood memories and powers). He has avoided being TheScrappy by being just so much fun to read about (getting the best lines in any current Thor comic), and because he is perfectly aware that he's doing things most kids shouldn't do (but, being Loki, doesn't care because he wants [[BigBrotherWorship to save Thor's life from The Serpent]]. D'awww). Plus he somehow gets the two best parts of being a KidHero--he has the youthful idealism (as much as anyone is idealistic in [[CrapsackWorld post-Civil War Marvel]], anyways), ''and'' the maturity to still actually get things done. He might be the best-liked Cousin Oliver ever for that.

[[folder: Fanfic]]
* A Cousin Oliver is common way of introducing a MarySue as a cousin, brother, nephew, even child a character never had.
* There's something of a common appearance of 'the son he should have had'--a well-loved character dies with [[SomeoneToRememberHimBy no possibility of leaving children]] (without being wildly out of character) and an unrelated couple remaining produce a child who turns out astonishingly like him (usually DeadGuyJunior), and sometimes end up using the above description.
* InUniverse in ''Fanfic/TheCalvinHobbesAndPaineShow'' -- Paine, Calvin's baby daughter, came not long after the titular ShowWithinAShow got a {{retool}} post-Watterson.

* The addition of [[MeaningfulName Howard Phillips]] (Jason Barry) to the [[Film/BeyondReAnimator third film]] in the ''Film/ReAnimator'' series, replacing the lead character of the last two films, Dan Cain (Bruce Abbott). Though not a kid, Phillips is significantly younger; producer/director Creator/BrianYuzna admitted freely that Phillips' addition was due to Yuzna's desire not to make a film about "two middle-aged guys".
* The [[{{Sequelitis}} generally unwanted followup]] to ''Film/TheBluesBrothers'' had many, many, ''many'' faults, and the fact that the new pseudo-Blues pseudo-Brothers band received a [[http://www.freneticarts.com/files/images/dvd/Blues_Bothers_2000_614/FA_image_00023301.jpg brand new member]] certainly did not alleviate the situation.
* In 1993, audiences of ''Film/RoboCop3'' were treated to the exciting revelation that, look, [=Robocop=] now has a [[http://www.craveonline.com/images/stories/2011/Film/Robocop%203%20Kids%20Are%20Awful.jpg little friend!]] She's nothing like ''Film/RoboCop2'''s murderous psychopath [[KidsAreCruel Hob]], and, in fact, she is even a [[PlayfulHacker skilled hacker]]!
* The [[StarTrekMovieCurse even-numbered]] Indiana Jones films use this, with Short Round in ''Film/IndianaJonesAndTheTempleOfDoom'' and Mutt in ''Film/IndianaJonesAndTheKingdomOfTheCrystalSkull''.
* Fred Kelman from ''Film/MightyMorphinPowerRangersTheMovie'', who got nearly the same amount of screentime as the Rangers themselves, despite doing next to nothing and being all around useless until the very end of the movie.
* Domesticating Nick and Nora Charles in sequels to ''Film/TheThinMan'' by giving them a kid didn't work very well with the witty, urbane, martini-swilling vibe that made the series popular. In ''The Thin Man Goes Home'', movie #5 in the series, Nick Jr. is not included when Nick and Nora go to visit Nick's parents. (Supposedly he's away at school.)

[[folder:Live Action TV]]
* The TropeNamer was added to ''Series/TheBradyBunch'' toward the end and was the last gasp of the show. He's also cited as the definitive proof of the franchise having [[JumpTheShark jumped the shark]].
* Robbie Rist (who played the original Cousin Oliver) became a Cousin Oliver again a couple of years later when he was Ted Baxter's adopted son in ''Series/TheMaryTylerMooreShow''.
%% * Stephanie on ''Series/AllInTheFamily'', arguably a case of TropesAreNotBad.
* Parodied on ''Series/BuffyTheVampireSlayer'' with Dawn. Buffy comes home at the end of an episode and [[spoiler: suddenly has a little sister, when up to before she'd always been explicitly an only child. Everyone, including Buffy herself, acts like she'd had a sister all along, and no one notices anything strange - except crazy people. An episode passes like this. Then another. And another. Luckily, we soon learn that Dawn is there because of [[CosmicRetcon a magic spell which altered everyone's memories]] (including hers) and that she's actually a CosmicKeystone in human form]].
%%* Andrew on ''Series/FamilyTies''.
%%* Kirby on ''Series/{{Frasier}}''.
* ''Series/TheCosbyShow'':
** Cousin Pam. Much older than most of the examples listed here, but she essentially served the same purpose for when the older kids were gradually moving out.
** Denise gets married off-screen and comes back with a stepdaughter named Olivia right around the time that Rudy starts going through puberty. Is it possible this was a direct [[ShoutOut nod]] to Oliver? Olivia/Oliver?
** Even Rudy herself, despite being one of the original Cosby kids. Later season episodes were far more focused on her and her friends than previously
** The grandkids Winnie and Nelson got more screen time as well--numerous scenes of Cliff or Claire interacting with them.
* ''Series/{{Amen}}'' did an older version of this as well, with Clarence, a street-wise kid whom Deacon Frye took under his wing showing up in the final season of the show. And there was Jeanette, a foster child of Thelma's, who showed up in the ''first'' season rather than later on, unlike most examples of this trope.
%%* Peter Cooksley, a Lawrence kid clone.
* ''Series/DiffrentStrokes''
** Sam (Danny Cooksey), the new younger brother from Phillip Drummond's second marriage. The series went from focusing on Willis playing older brother to Arnold to Arnold playing older brother to Sam. [[DemotedToExtra There wasn't much room for Willis afterwards]]
* ''Series/EightIsEnough'' had Cousin Jeremy (Ralph Macchio, who went on to become ''Film/TheKarateKid'').
* ''Series/TheFactsOfLife'':
** Kelly, the teen shoplifter, who was added after the girls moved out of the dorms. Thankfully her addition was short-lived.
** There was also Pippa, the Australian foreign exchange student, added for what turned out to be the last season.
%%** Andy and Pippa.
* In ''Series/FamilyMatters'' the Winslows adopted 3J, a streetwise little orphan. Since there already was a kid in the show, little Richie, they merged into a single split-personality Cousin Oliver ("Maybe we shouldn't do this." "Oh, come on, it'll be fun!").
* Joey Lawrence for ''Series/GimmeABreak'', then his brother Matt. The Lawrence kids made a cottage industry of being a Cousin Oliver.
* Penny from ''Series/GoodTimes''. Introduced to give Willona someone to care for, since the Evans kids weren't really kids anymore.
* ''Series/GrowingPains'' had two: Chrissy, the youngest Seaver daughter, and then later Leonardo Dicaprio's homeless-kid character.
* ''Series/LittleHouseOnThePrairie'':
** The final seasons featured a hilarious number of random "adorable" orphans shoehorned into the Little House after the original kids left home. Albert (adopted off the streets of the Big City), James and his sister Cassandra (parents killed in a wagon crash), Jenny (left on Laura's doorstep by her dying brother-in-law), etc. This is despite the show ''already'' having two younger Ingalls sisters in Carrie and Grace. Oddly enough, as more than one fan has remarked in alarm, Pa Ingalls never did build an addition onto his two-room shanty.
** The Olesons' adoption of street urchin Nancy, [[SuspiciouslySimilarSubstitute who just happens to look and act a lot like Nellie]]. This is a mild subversion, in that Nancy is added to be the ''AlphaBitch'' as opposed to a beacon of cuteness. Even more interesting, this is an invoked example--Harriett Oleson deliberately adopted the brattiest, most misbehaved child in the local orphanage to replace Nellie.
** Incidentally, Jenny, introduced a year after Nancy, may have been made the age she was in order to have a little girl around Nancy's age to butt heads with.
* ''Series/MarriedWithChildren'' had Peggy's young cousin Seven, who was adopted by the Bundys at the beginning of Season Seven ([[DontExplainTheJoke get it?]]) since the original "Children" were both adults by that point. The character proved so unpopular with viewers and writers alike that partway through the season, he became a BrotherChuck when he was removed with absolutely no explanation (though he had his FaceOnAMilkCarton for LampshadeHanging effect). The main issue with Seven was how ''Married'' relied on a lot of adult, sexual, and sadistic humor that really wouldn't work with a child (Kelly and Bud were already teenagers in the first season), and writing jokes appropriate for him altered the tone of the show.
* ''Series/MysteryScienceTheater3000'' sharply parodied the Trope with "Timmy Bobby Rusty", a lisping kid whom Dr. Forrester employed to help boost the show's sagging ratings. He lasted exactly one segment.
* In ''Series/MyThreeSons'' they formally adopted Chip's orphan friend Ernie. Justified, sort of, by the need to maintain the accuracy of the show's title after Mike was [[BrotherChuck chucked from the show]]. But then the show lasted so long that Ernie eventually became a teen and the producers decided to add step-sister Dodie.
* Justin on ''Series/PowerRangersTurbo'' for a lot of fans. The hate has depleted somewhat due to his actor being a pretty cool guy and interacting with fans.
* ''Series/GoseiSentaiDairanger'' with Ko fits, except he is a bit of a pervert and relies on his EmpathicWeapon to help him out. In all fairness, Cousin Olivers were not uncommon in the original series and were arguably [[KidAppealCharacter a useful proxy for the younger fans]].
* The diner in the ''Series/{{Supernatural}}'' episode "[[JumpingTheShark Jump the Shark]]" is called Cousin Oliver's... and the plot is about a possible younger brother turning up. Subverted though, when it turns out that the character in question (Adam) [[spoiler: ''was'' actually their half-brother, emphasis on "was" because he was already dead before the start of the episode]]. In season 5, the angels bring Adam back for a few episodes, in which he was actually useful to the plot. For one of these episodes, Sam, Dean and Bobby play at the idea that he's family and act like they value him at least as much as (say) a close friend like Cas. Then they promptly forget about him. By the time season seven rolls around, nobody cares in the slightest that he's spent years being horrifically tortured by Lucifer and Michael (when given the chance to save him in season 6, Dean chooses Sam over him). Ultimately, this trope is subverted by laziness.
* The Porters' foster child Declan in the last series of ''Series/TwoPointFourChildren''. He also served as a SuspiciouslySimilarSubstitute for the departing Jenny.
* Played with in ''Series/TheXFiles'' in which one episode had a man who assumed this identity because he associated with the original Cousin Oliver. A person who is unloved.
* Somewhat lampshaded in ''Series/MyNameIsEarl'', when Earl has a dream that he is happily married, and he remembers when "all our kids stopped being cute and Cousin Wendel came to live with us."
* Oliver [[SuspiciouslySimilarSubstitute replaced]] Jeff in ''Series/{{Coupling}}''. Considering how the TropeNamer is [[Series/TheBradyBunch Cousin Oliver]], it could be done as a parody. However, in one episodes after season 3, Jeff is actually '''''removed''''' from a clip of a dinner party.
* April on ''Series/GilmoreGirls''. Even more annoying in that she is a science-and-math-oriented version of Rory in response to viewer complaints that they missed the younger Rory. Rory had great taste in music which kept her from being a total spaz, April was all nerd with very few (if any) redeemable traits. She also was the source of major tension in Lorelai and Luke's relationship, which didn't endear her to the viewers any.
* Done in ''Series/TheDonnaReedShow'' when the family adopts a homeless child after their eldest daughter leaves for college.
* In ''Series/{{Blossom}}'', when Carol moves in with Nick, we're introduced to her little daughter Kennedy. Blossom and her brothers had a good relationship with her, but fans of the show didn't.
* Jamal's younger cousin Casey on ''Series/{{Ghostwriter}}''.
* Gloria on ''Series/TouchedByAnAngel'' (the Valerie Bertinelli character) is possibly the oldest example on the list.
* Little Nicky in ''Series/TheFreshPrinceOfBelAir'', even though at least he wasn't a [[SpotlightStealingSquad spotlight stealer]], unlike most of those listed here.
* Ricky, the kid next door who liked to sing with ''Series/ThePartridgeFamily'' (often seen as a [[DuelingShows Dueling Show]] to ''The Brady Bunch'').
* Arthur [=McArthur=], also known as "the little fat kid", from ''Series/HeyDad''.
* Billie Jenkins was an extra witch added onto ''Series/{{Charmed}}'' who came out of nowhere and became like a sister to the Halliwells.
* Guppy in ''Series/ICarly'' - however, he's in only five episodes.
* Nicky and Alex in ''Series/FullHouse''.
* Dale from ''Series/LawAndOrderSpecialVictimsUnit''. Subverted in his final appearance in which he turns out to be a psychotic killer pushed to breaking point by a season of being treated like a screw up and a kid. Though in their defense, he was a screw up and a ManChild.
* Sky, a late addition to the cast of ''Series/TheSarahJaneAdventures'', only appeared in the final three stories of the series as a regular before it was cancelled due to the death of its lead actress. Played straight in that Sky is not necessarily a Cousin Oliver in the sense of being an annoying addition, but she does qualify as far as being a young character added to a well-established cast that was growing older than their target demographic.
* On ''Series/{{Degrassi}}'', Snake's never-before-mentioned godson, Connor, comes to live with him conveniently right after his daughter goes away to college.
%%* Riff in ''Series/BarneyAndFriends''.
* Adric in ''Series/DoctorWho'', although elements of the trope are averted in that the character was simply one of a long line of transient companions, and the series itself continued for a number of years afterwards. Plus Adric's final episode was one of the most dramatic send offs for a character in the history of the series. He is ''definitely'' the series' number one {{Scrappy}}, but it was due to his holier-than-thou attitude and not his age... and his death [[AlasPoorScrappy changed a few minds about his Scrappydom]].
* Rose from ''Series/DowntonAbbey'' is a little older than the trope usually implies, but otherwise fits. Introduced [[RememberTheNewGuy out of nowhere]] in the [[LastEpisodeNewCharacter final episode]] of series 3, she ends up being a BrattyTeenageDaughter who runs away from her chaperones, takes up with a married man, throws a tantrum when she gets caught, and generally makes a complete nuisance of herself. Perhaps meant to be the embodiment of TheRoaringTwenties, she instead went down like a cup of cold tea (as the Dowager Countess might say).
** Not quite. Her personality was due to having a tense relationship with her overbearing mother, who was in the process of a divorce from her father. Going to Downton was an escape for Rose. She matured in seasons 5 and 6 by taking up charity work and getting married.
* For ''Series/{{ER}}'''s fifth season, new medical student Lucy Knight joined the hospital staff, cast in the same NaiveNewcomer role that Carter had filled when the show premiered. Although her appearance didn't tank the show, she's still a very good example of this trope in that her appearance coincided with the show's first critically weak season and her failure to catch on led to her being killed off a mere year and a half into her tenure. It's one of the few shows whose frequent use of this trope is actually necessary and realistic--as other medical students/residents would advance academically and graduate, it would be logical to bring in new ones--Gallant, Neela, etc. Even its final episode was the first day for a new doctor.
* ''Series/AllyMcBeal'': Ally's biological daughter appeared out of nowhere in season 5. You ask how a single female lawyer got herself an eleven-year-old kid? Why, from her donated ova.
* ''Series/RemingtonSteele'' introduced a rare adult version in the final season in the form of Jack Scalia, who joined the series at the 11th hour as an Indiana Jones-esque adventurer who becomes a romantic rival for Laura's affections. Although on the surface he doesn't seem to meet the criteria, the character had much of the same impact in terms of alienating the audience who were already upset that series star Creator/PierceBrosnan had lost out on playing Film/JamesBond thanks to NBC unexpectedly renewing the series for a short six-episode season, adding insult to injury by adding the Scalia character.
* ''Series/StepByStep'' pulled a triple whammy. First they commit the act of ChuckCunninghamSyndrome with the disappearance of Brendan Lambert, followed by pulling a Cousin Oliver with the introduction of baby Lilly. They then [[SoapOperaRapidAgingSyndrome aged up baby Lilly to 5 years]] in the sixth season.
* {{Soap opera}}s used this frequently. Summers frequently saw the addition of never before seen or mentioned distant relatives of veteran characters, or the rapid aging of children who were already on screen, all to kick off new teen-oriented storylines to engage a demographic that would now be home from school and able to watch.
* ''Series/ADifferentWorld'' brought in no less than six of these for its new freshman/sophomore class at the beginning of what turned out to be its final season--despite the fact that, like ''{{Series/ER}}'', this would be necessary and logical as the older characters graduated and went on to graduate school/marriage/careers. True to form, the new characters failed to catch on and ratings plummeted until the show was canceled.
* Series/TwoAndAHalfMen: Louis in Season 12.
* ''Series/ItsAlwaysSunnyInPhiladelphia'' has an ''inverted'' example with Frank Reynolds, with Creator/DannyDeVito joining a cast of actors who were in their twenties or thirties.
** Fitting the inversion, unlike how this trope often pairs with [[TheScrappy another]], the [[ExecutiveMeddling executive-mandated]] [[IconicSequelCharacter introduction of Frank]] is credited with ''saving'' the show.
* ''Series/ForeverKnight'': in the third season the network wanted to make the show more appealing to younger audiences so they introduced a lot of "younger" and "hype" characters like vampire Vachón and his vampire friends who all look like younger versions of La Croix and Jannette.
* ''Series/{{Glee}}'', similar to ''A Different World'' mentioned above, brought in new students in its later seasons as the original Glee Club members began graduating high school and moving on with their lives. But except for Unique, the "New" New Directions did not catch on with fans. After two seasons, they were PutOnABus and ''another'' New New Directions was brought in. These kids were better-received than their predecessors, but by this point the show was explicitly in its final season.
* ''Series/TrueBlood'': The sixth and seventh/final seasons of the show spent a great deal of time focusing on the romance between [[HotWitch Holly's]] teenage son Wade and Sheriff Andy's [[HalfHumanHybrid half-fae]] daughter Adilyn (calling her a teenager is a stretch since she's [[PlotRelevantAgeUp technically less than a year old]]).

[[folder:Video Games]]
* Robots don't age, but Capcom added the rookie Axl, who acted all of 13 to the cast of ''VideoGame/MegaManX7'' to contrast with veterans X and Zero.
* Joey [=MacAdoo=], Samantha Pearce, and Arthur Chen in the ''VideoGame/BackyardSports'' series, replacing the much more mature Jocinda Smith, Sally Dobbs, Kenny Kawaguchi, and Billy Jean Blackwood. Joey is easily becoming a CreatorsPet now.

[[folder:Web Comics]]
* Every once in a while an example comes along that defies the precedent, that's exactly what happened in ''Webcomic/ComingUpViolet''. As many readers know, the primary shtick with ''Webcomic/FurWillFly'' was that Brad was the only human living a world filled with furries. ([[spoiler:Well, at least until Brad sets a whole mess of pandimensional aliens [like himself] free from a detention facility, but that's neither here nor there]].) The comic's sequel changes this dynamic by introducing Dawn, a young -- and incredibly normal -- teenage girl to the mix. However, rather then being resigned to the Scrappy Heap, the fans love her and she adds quite a bit of character to the cast -- indeed, being an even bigger FishOutOfWater than Brad ever was. (May overlap with the SuspiciouslySimilarSubstitute.)
* A "cousin Marliver" was discussed as being a possible new character in ''WebComic/MarcoandMarty'', directly referencing this trope. His catchphrase would have been, "Who wantsa ''flan!''"

[[folder:Web Original]]
* [[http://www.theonion.com/content/news/cousin_oliver_to_join_white_house Parodied]] by ''Website/TheOnion''.
* Jeffy from ''WebVideo/SuperMarioLogan'', who was dropped off at Mario's door, and is now ''hogging'' the spotlight, to the point where Mario's friends, Shrek and Black Yoshi, (who used to be the main characters along Mario) only appear once every few months.

[[folder:Western Animation]]
* From ''Franchise/ScoobyDoo'':
** [[TheScrappy Scrappy-Doo]]. He is parodied in ''WesternAnimation/ScoobyDooMysteryIncorporated'', where when Daphne noticed his statue, Fred was quick to cut her off and mention that they promised that they would never speak about the incident ever again.
** There's also Flim-Flam, the [[EthnicScrappy ethnic kid]] from ''WesternAnimation/The13GhostsOfScoobyDoo'', though it's possible he may have been added as some sort of company bet to see if they could actually create something more obnoxious than Scrappy-Doo. Also parodied in ''Mystery Incorporated'' when Daphne offhandedly mentions he received a 25 to life prison sentence.
** Scooby-Dum, who made appearances in ''The Scooby-Doo Show'' and ''The Scooby-Doo/Dynomutt Hour''.
* ''WesternAnimation/TheSimpsons'': The episode "The Itchy & Scratchy & Poochie Show" thoroughly parodied this trope. According to WordOfGod, an executive suggested the writers should add a new kid who had "the genius of Lisa but the attitude of Bart". In response, they made an episode where the [[ShowWithinAShow Itchy and Scratchy cartoon]] gets a new character, Poochie. In the episode's story, Poochie was created to be a hip new character with "pizzazz". However he does nothing funny in his first appearance and the audience immediately hates him. The in-universe creators of the Itchy and Scratchy cartoon quickly remove Poochie from the show [[ShooOutTheNewGuy ("I have to go. My planet needs me.")]] complete with a notice that he died on the way home. The episode also contains a further parody with Roy, a college aged "cool guy" who is [[RememberTheNewGuy inexplicably living with the Simpsons family]]. Lisa even {{lampshades}} the aspect of adding a character for no reason to a show just before Marge greets Roy for the first time.
* Sharko, Marco's illegitimate half-shark son, from the final season of ''WesternAnimation/{{Sealab 2021}}'', is a spoof of this character type. [[spoiler: The final episode has him show up, only to get whacked by Shanks's 'Captain's Log' to cheers from the audience.]]
* Lola Bunny, although not a kid, was shoehorned into the ''WesternAnimation/LooneyTunes'' lineage the same way a Cousin Oliver often is. They actually took it to the point of putting her baby self in ''WesternAnimation/BabyLooneyTunes''... even though the gang didn't know her in ''Film/SpaceJam''.
* Spoofed in ''WesternAnimation/DrawnTogether'' with Strawberry Sweetcake.
* Spoofed in the ''WesternAnimation/PinkyAndTheBrain'' episode "Pinky and the Brain and Larry" before ExecutiveMeddling [[ReTool retooled]] [[FunnyAneurysmMoment the show into]] ''[[FunnyAneurysmMoment Pinky, Elmyra and the Brain]]''.
* The animated version of ''[[WesternAnimation/TheGodzillaPowerHour Godzilla]]'' ([[WesternAnimation/GodzillaTheSeries not that one]]) added a baby called "Godzuki". A bit of an aversion, as Godzuki was based off of Godzilla's son Minilla, from the original films.
* Hana in Season 4 of ''WesternAnimation/KimPossible''. Fortunately, she played an extremely small role (when she even appeared) outside of two episodes, so her existence did not significantly impact the tone of the show.
* ''WesternAnimation/TheCritic'' parodied this Trope when Duke Phillips attempted to add a cute kid with an endearing speech impediment to Jay Sherman's show to try to boost his ratings.
-->'''Jay:''' Well I find you "wepulsive" and "wepugnant"!
-->'''Kid:''' (suddenly normal-voiced) Hey, that speech impediment shtick is copyrighted. You'll be hearing from my lawyers! ''(cute voiced)'' I mean, ''wawyers''.
* Parodied and referenced in ''WesternAnimation/BatmanTheAnimatedSeries'', where "Little Cousin Spunky", the new child star added for the last season of Baby Doll's sitcom, was also designed to resemble Cousin Oliver. (They even had [[CastingGag Robbie Rist]] in the episode, though he voiced another character.) Also subverted in this episode -- Robin watches the entire series trying to find clues; Spunky turns out to be the only enjoyable thing in the show... well, the only thing Robin liked, mostly because Baby Doll was his favored victim.
* Dil, and later Kimi, in ''WesternAnimation/{{Rugrats}}''. Kimi got it even worse than Dil did, since most fans regarded the seasons after the second movie as the worst in quality by dumbing down the babies (even though they were already dumbed down after the hiatus return in 1997). Both of these characters were Cousin Olivers when the show was on, but now many fans accept the characters and like them equally as other characters.
* Poof, Cosmo and Wanda's son on ''WesternAnimation/TheFairlyOddParents.'' Done again in season 9 (2013), with the addition of a [[FairyCompanion fairy dog]] named "Sparky", and then done ''again, twice,'' in season 10 with Chloe and Crocker's nephew Kevin. You'd think after Sparky, they'd get the idea...
* This trope can be a variation on having a KidSidekick and is very prone to happen when a live-action series is turned into an animated one; this is usually done for Saturday morning TV or the local equivalent, so the thinking is that kids want to watch other kids involved with the heroes. A classic example is ''[[Franchise/{{Emergency}} Emergency +4]]'', in which the paramedics and fire-fighters from the show ''Franchise/{{Emergency}}'' were saddled with a bunch of 4 kids who got to chase the grown-ups around in a van labelled "+4". The network that commissioned the ''WesternAnimation/{{Star Trek|The Animated Series}}'' animated series was reported to want to introduce a similar bunch of young "cadets" on the ''Enterprise''. Thank Finagle Roddenberry said no... at least until TNG and the CreatorsPet Wesley.
* In the season 2 episodes of ''WesternAnimation/ActionLeagueNow'' (actually ''WesternAnimation/KaBlam's'' second season), the creators added in Quarky, a doll who was said to be Bill the Lab Guy's daughter. However, fans found her quite annoying (the creators answered this by taking her out during season 3).
* Spike Witwicky and Carly were teenagers in the first two seasons of ''WesternAnimation/TheTransformers''. Then, in [[WesternAnimation/TransformersTheMovie the movie]] taking place 20 years later, we're introduced to their young son Daniel.
** With the exception of ''WesternAnimation/BeastWars'' and ''WesternAnimation/BeastMachines'', every ''Franchise/{{Transformers}}'' series has kids who tag along with the 'bots just because network people don't think like humans and believe kids would truly rather see [[WesternAnimation/TransformersPrime some kid try to impress some girl with racing]] than ''Autobots vs. Megatron and his robo-zombie horde.'' Daniel is generally considered the worst (with Kicker from ''Anime/TransformersEnergon'' a close runner-up) and Sari from ''WesternAnimation/TransformersAnimated'' was actually ''liked.'' The ''Anime/TransformersArmada'' kids and the ''[[Film/{{Transformers}} Bayformers]]'' kids are considered mostly harmless if not for the [[DevelopingDoomedCharacters screentime-hogging]]. The [[WesternAnimation/TransformersPrime current batch]]... we'll see. However, it quickly became clear that Miko's being a RunningGag of "Everything's going fine for the Autobots, but oh no! Miko has sneaked along and we have to go save her ''again!''" moments are something the creators are having a lot more fun with than the audience. Over the first season, though, her doing this diminished from "thrice per episodes" to "once every few episodes." In general, though, ''Transformers'' fans are JustHereForGodzilla, so every TF human begins life in Scrappy status and must pull himself/herself out.
* Bubba the Cave Duck from ''WesternAnimation/DuckTales'' became this so quickly he was [[ChuckCunninghamSyndrome Brother Chucked]] ''straight after his introductory episodes.''
* Nibbles the grey mouse from ''WesternAnimation/TomAndJerry'' is essentially this, though he doesn't seem to be widely hated for it. The fact that he only shows up in the occasional short may help.
%%** As Tuffy, he seems to fare better.
* ''WesternAnimation/SamAndMaxFreelancePolice'' added a GadgeteerGenius character, who was also a little girl, due to ExecutiveMeddling insisting that they added a recurring female character to the show. Steve Purcell liked her, but wanted her kept out of the series as much as possible due to fear of her messing up the dynamic between the two main characters, so while the fandom's feelings towards her are mixed, she's generally considered not to harm the show too much.
* Corporal Capeman from ''WesternAnimation/InspectorGadget''. He added nothing to the series when he was added and his chemistry with the others is zilch.
* In ''WesternAnimation/BatmanTheBraveAndTheBold,'' Bat-Mite calls the trope by name when summoning Ace the Bat Hound during [[NoFourthWall his attempt to make the show]] [[JumpingTheShark jump the shark]] and get cancelled in favor of something DarkerAndEdgier. ComicBook/AmbushBug tells him that Ace is an accepted part of the mythos - only for Bat-Mite to explain he was talking about ''Ace'''s new sidekick, who is Scrappy-Doo in a mask.
-->'''Ambush Bug:''' You ''fiend!''
* Bat-Mite himself in ''WesternAnimation/TheNewAdventuresOfBatman'', to the extent that he wrecks the series by spoiling the Batman/Robin dynamic and taking screen time away from the more worthy third wheel, Batgirl. Batman and Robin view his as TheScrappy in universe.
* In the kid's show ''WesternAnimation/SuperWhy'', Whyatt's puppy is added as a new character. He's tacked on hastily to every scene, has no discernible personality, and doesn't seem to have a point in the series. Is he meant to appeal to that valuable dog demographic? Or does he prepare pre-k kids to love Jar-Jar?
* Referenced in the ''WesternAnimation/FamilyGuy'' episode "Emission Impossible", when Stewie fears that a potential new baby means he will be replaced, which results in a ''[[Series/TheBradyBunch Brady Bunch]]''-themed CutawayGag where Oliver amuses the family while Bobby is forced to stay in the garage.
* Spildit of ''WesternAnimation/TheDreamstone'' qualifies to some degree. She has most of the traits, younger, mischievous and rather obnoxious. She avoids disturbing the dynamic too much by only making the occasional appearance however, and gains at least some positive cred for being about the only character to ThrowTheDogABone for [[TheChewToy Sgt Blob and his men]].
* The fifth season of ''WesternAnimation/{{Doug}}'' (and first season of the Disney incarnation) introduced Doug's new baby sister, Cleopatra "Dirtbike" Funnie, who was born in the second ChristmasEpisode. Unlike most examples, only a few episodes revolved around her.
* Kiara was an only cub in ''Disney/TheLionKingIISimbasPride,'' but in ''WesternAnimation/TheLionGuard'' she received a younger brother, the protagonist Kion.
* The Smurflings were added in the eight season of ''WesternAnimation/TheSmurfs''. They are basically kid version of the Smurfs; more accurately, Nat, Snappy and Slouchy were de-aged previous Smurfs, and Sassette was created by Gargamel like Smurfette. They also added a villainous kid, Scruple, as Gargamel's apprentice.
* The Junior Ghostbusters (three kids that were "honorary" Ghostbusters) were introduced in the third season of ''WesternAnimation/TheRealGhostbusters'' push by the executives as a "strategy" to attract younger audiences.
* ''WesternAnimation/TheRaccoons'' introduced Bentley around the second season. He was Ralph and Melissa's nephew (and a kid version of Bert), and his introduction had surprisingly almost zero repercussions among the fandom. (His debut appearance strangely had him referred to as Ralph's cousin.)