Follow TV Tropes

Following

Context Main / AdaptationalDumbass

Go To

1%% Image moved here per Image Pickin' thread: https://tvtropes.org/pmwiki/posts.php?discussion=1523326584094576100
2%% Please do not replace or remove without starting a new thread.
3%%
4[[quoteright:310:[[Franchise/SonicTheHedgehog https://static.tvtropes.org/pmwiki/pub/images/dumbassknux.jpg]]]]
5[[caption-width-right:310:[-Knuckles the Echidna, [[VideoGame/SonicRidersZeroGravity 2008]]: Translator of ancient runes.[softreturn]Knuckles the Echidna, [[WesternAnimation/SonicBoom 2014]]: Illiterate.-]]]
6
7When adapting an existing character for a new work the character is often altered in transition from the source material. They might become [[AdaptationalNiceGuy nicer]], [[AdaptationalJerkass meaner]], [[AdaptationalHeroism heroic]], [[AdaptationalVillainy nastier]], [[AdaptationalBadass more badass]], [[AdaptationalWimp a lot less badass]], or [[AdaptationalIntelligence smarter]].
8
9Then there are these characters, who are actually made dumber; for example, a character who was TheSmartGuy in the source material becomes TheDitz in the new one.
10
11A SubTrope of AdaptationPersonalityChange. Compare and contrast TookALevelInDumbass, where a character decreases in intellect inside the particular work, and AdaptationalIntelligence, this trope's polar opposite. AdaptationalNonsapience is the more extreme version.
12
13----
14!!Examples:
15
16[[foldercontrol]]
17
18[[folder:Anime & Manga]]
19* ''Manga/DeathNote'': While Misa Amane wasn't [[OvershadowedByAwesome the most intelligent person]] in the original manga, she did have a good head on her shoulders and was serious about her actions, knew simple, slightly dangerous yet effective plans on how to get what was needed, like in the Yotsuba Arc where [[spoiler:she goes off on her own to investigate Higuchi from the Yotsuba group and records his admission that he is the current Kira]] which played a big role in finishing up that arc. The anime altered her intelligence to the point of downplaying any big moments she had in the manga and even [[AdaptationPersonalityChange changed her personality]] to be more airheaded and up-played her {{Yandere}} traits towards Light, making her a typical TheDitz character.
20* ''Manga/DragonBallSuper'':
21** Unlike the [[Anime/DragonBallSuper anime]], manga Goku Black is more likely to grab the IdiotBall, such when he didn't kill Future Trunks after he's weakened from fighting Future Dabura, and actually spares Trunks' life again because he wants to keep fighting him, while anime Black is far more [[CombatPragmatist pragmatic]] and [[NoNonsenseNemesis no-nonsense]] since he tries to kill Trunks every chance he gets and even traps him in the past by [[spoiler:destroying the Time Machine]]. However, the sparing Trunks is justified: [[spoiler:much like Captain Ginyu, this version of Black couldn't access anywhere close to all of Goku's power at first, requiring him to use the Saiyan race's innate CameBackStrong abilities to tap into it by having Trunks injure him and being healed by Future Zamasu in turn.]]
22** In the manga, Gowasu is even ''more'' of a HorribleJudgeOfCharacter toward Zamasu than he is in the anime. While Gowasu in the anime is aware of Zamasu's issues and tries to help him, manga Gowasu is completely unaware that Zamasu hates mortals until he slices the Barbarian in half, and just harshly tells him to know his place and act like a god without actually trying to quell his issues with mortals. Also, while in the anime, Gowasu chose Zamasu as his successor in part because of [[PureIsNotGood his pure heart and strong sense of justice]], in the manga, it's heavily implied that Gowasu chose Zamasu as his successor based purely on [[AsskickingLeadsToLeadership his battle power]], which Whis himself states was a stupid move. Also, whereas Gowasu offers Zamasu and Goku Black a LastSecondChance in both versions, in the anime, he at least did so while Goku and Vegeta were there and able to back him up; in the manga, he approaches Black to do so ''[[TooDumbToLive alone]]''.
23** Overlapping with {{Flanderization}}, but Goku himself tends to get hit with this hard in both anime and manga adaptations of ''Super'', especially compared with the preceding ''[[Anime/DragonBallZ Z]]'' and to lesser extent ''[[Anime/DragonBallGT GT]]''. Most of his OlderAndWiser traits from the Buu Saga are chucked in the bin and he’s far, far more of a fight hungry dumbass who does everything from forgetting Senzu Beans and the talisman for the Evil Containment Wave during the fight against Zamasu, to inciting a multiversal tournament that will result in trillions of lives getting erased from existence and put his own universe in jeopardy[[note]]Though in all fairness, Zen-Oh was planning on doing that anyway, and the tournament turned out to be a SecretTestOfCharacter for the winning universe that resulted in everyone being brought back[[/note]]. He also doesn't know what a kiss is or why pregnancy is hard, despite being a married man with two sons, and at [[Anime/DragonBallSuperSuperHero one point]] chastises Vegeta for meditating which is something he's practiced before. Granted, there is some RevisitingTheRoots at play as Toriyama never intended Goku to be a mature protagonist, and it can be assumed that his current mindset is the result of his suppressed Saiyan instincts massively flaring up. Regardless, the CharacterDevelopment he got throughout ''Z'' is often disregarded for [[RuleOfFunny humor]], as well as [[AesopAmnesia relearning lessons he'd adopted years prior]].
24* ''Anime/FullmetalAlchemist2003'': Alphonse starts off as an intelligent, insightful young boy who was the [[StraightMan sensible one]] compared to Ed. Later on he makes many very poor, and arguably stupid choices like taking Barry the Chopper's mind games to heart, and distrusting people who he's known all his life. This happens in both the manga and anime, but in the manga, Al learns from this and doesn't do anything like it again. In the first anime it mainly takes effect in the later half, where he runs off every time he gets upset, even though the Homunculi [[spoiler:and Dante]] are looking for and trying to kill them, going along with Shou Tucker's plans and not telling Ed (even though Tucker made his daughter [[spoiler:into a chimaera, resulting in her death]], and letting Sloth convince him that she's his mother ([[spoiler:which she [[CameBackWrong technically is]]]]), even though she is a Homunculi when Ed is trying to remind him that they're fighting for their lives, [[spoiler:immediately running towards Envy disguised as Winry, right after Ed says it isn't her, and barely putting up a fight]]. He arguably became more impulsive than his brother, whereas earlier in the show it was the other way around. This could be interpreted as the writers having Al act more like how a real little boy would if they were put in such a situation, [[spoiler:but he becomes more competent again in the finale]]. Other than that he basically becomes [[TheLoad quite the load]].
25* Ask anyone who only knows the anime adaptation of ''Manga/KaitouSaintTail'' and they'll probably tell you that [[SympatheticInspectorAntagonist Asuka Jr.]] is a [[ObliviousToLove romantically challenged]] idiot who's so confused between [[TwoPersonLoveTriangle having feelings for both Meimi and Saint Tail]] that he passes them off as having [[ComicallyMissingThePoint a coincidental resemblance]]. In the manga, this couldn't be further from the truth: a MidSeasonTwist had revealed that [[UnreliableNarrator much of what we'd been led to believe about him was inaccurate]], and the rest of the plot had upgraded him to the {{Deuteragonist}} position as he started catching onto Saint Tail's identity, realizing the true nature of the SecretIdentityIdentity problem, and saving Meimi from a mental health crisis [[DevotedToYou out of sheer devotion]]. Although all of these plot points are carried over to the anime, it also adds tons of episodic {{Filler}} that constantly [[NegativeContinuity ignores continuity]] and [[StatusQuoIsGod resets his characterization]] to the prideful, gung-ho WorthyOpponent stance he had at the beginning of the series ''without'' any of the HiddenDepths, leading many an anime viewer to never realize he was actually supposed to have a character arc.
26* The version of Kycilia that appears in ''Manga/MobileSuitGundamTheOrigin'' is a far cry from the coldly pragmatic Kycilia that appeared in the original ''Anime/MobileSuitGundam'', to the point where she almost has more in common with Gihren than she does her original version. While she's not exactly incompetent and still manages to be a major threat, the fact that she possesses most of Gihren's personality flaws (his overconfidence and extreme LackOfEmpathy in particular) while lacking in the areas that made Gihren such a threat (including his eerily persuasive charisma and [[RousingSpeech oratory skills]]) and has her impulsiveness dialed up a bunch means that she's nowhere near as effective at playing politics as the original Kycilia was, and is prone to rash decisions that only worsen things for her side (like having one of her brothers assassinated at a time when political tensions were already high).
27* In ''Manga/NegimaMagisterNegiMagi'', lead girl Asuna Kagurazaka is a pretty bad student, but shows intelligence in areas unrelated to school. In ''Anime/NegimaSecondSeason'', however... She's basically the dumbest member of the cast and spends most of the series chasing down the mythical {{Chupacabra}}.
28* The anime of ''Manga/OnePiece'' does a fair amount of this to crew compared to the manga especially in {{Filler}} arcs. For example Zoro get stumped by a path that leads into water and Sanji is willingly to get eliminated by the villain team in a game thanks to the female entourage cooing him into it, while they definitely have these weaknesses in manga it never quite gets as bad as it does in the anime. Luffy is the crowning example however, in the manga he is a IdiotHero but he at least has some sense of why particular things are important. In the anime however Luffy will [[https://m.youtube.com/watch?v=-NtjisNofIM infamously try eating a treasure chest before throwing it away]].
29* In ''Anime/Persona5TheAnimation'', there's a minor case with Ann. During the Medjed arc, a mysterious hacker called Alibaba offers to help the Phantom Thieves deal with Medjed in exchange for stealing the heart of Futaba Sakura, [[spoiler:Alibaba's real identity]]. In the game, Ann immediately realizes that Futaba has the same name as Sojiro Sakura, owner of the Leblanc café and [[PlayerCharacter Ren]]'s guardian, after Ren shows her the IM conversation in which Alibaba made the request. In the anime, Ann says that the name sounds familiar, but doesn't make the connection until Yusuke points it out in a scene shortly after the group's first IM conversation with Alibaba. The same could be said for Makoto, who's on the cusp of realizing the same thing before Ann spells it out, but it's possible that Sojiro never told her his name during the scene in which she first met him.
30* ''Anime/PokemonTheSeries'': Psyduck in the game is reliable hitter and even with specialized moves like HM it can hit pretty hard. In the anime, it's a total ButtMonkey who can't even swim (while in the games he's more than capable, both swimming hitting hard with HM Surf) at least [[CrouchingMoronHiddenBadass until his psychic powers awakened]].
31* ''Manga/TegamiBachiLetterBee'' has Lag show differing levels of intelligence after [[spoiler:Gauche seemingly returns to normal after being shot by Lag's letter bullet]]. In the manga, he gradually realizes something is off, and eventually confronts [[spoiler:"Gauche" about the fact that he's still Noir, and the only thing that's changed is that he gained the memories Lag has of him]]. In the anime, he doesn't suspect anything until Niche, as well as [[spoiler:Noir himself]] point it out to him.
32* ''Anime/TenchiMuyo'': In the OVA, Mihoshi was a competent cop, but had been overworked to the point that she had a nervous breakdown and was forced to take a leave for her health. She'd just been reinstated when the series began, but she still wasn't back on the ball and made silly mistakes. The third OVA implies that something terrible and traumatic happened to her that caused her mental break, but nothing definite is ever pinned down. All other continuities portrayed her as a ditz from the get-go, with the understanding that she'd ''always'' been incompetent. Even worse is that her level of intelligence seems to drop with each continuity, the worst being the version from ''Anime/SasamiMagicalGirlsClub''.
33* In the mainline ''Franchise/MarvelUniverse'', ComicBook/KittyPryde is a TeenGenius, but in ''Manga/XMenMisfits'' she's unable to understand basic geometry, or manage to work her powers properly after weeks of training.
34[[/folder]]
35
36[[folder:Comic Books]]
37* ''ComicBook/BatmanEarthOne:'' This universe's version of ComicBook/{{Batman}} did not undertake the usual round-the-world crimefighting education backstory Bruce did, so while he has the heroism and fighting skills similar to the traditional Batman, he is a piss-poor detective, to the point of cluelessly trampling all over a crime scene in volume 2 and asking Gordon for tutoring in this area. Volume 3 sees him [[BoringButPractical hiring Catwoman]] to sniff out the source of the gangs' weaponry when he proves unable to do it himself in the limited time available.
38* ''ComicBook/JusticeSocietyOfAmerica'': The series portrays Adolf Hitler as a ranting and raving buffoon who leads mostly because of his cult of personality and charisma than for an any real merit. It further shows several times that he does not fully comprehend the consequences of his actions and is as equally [[IgnorantOfTheirOwnIgnorance ignorant]] as he is malicious.
39* ''ComicBook/New52'':
40** Captain Stingaree was wrong about his hated identical brothers being ComicBook/{{Batman}} but he had clear reasons for drawing that conclusion and Bruce himself ensured that his suspicions were (initially) confirmed by having one of said brothers be unmasked by Karl as Batman. His plan was also meticulously plotted out. Post-ComicBook/{{Flashpoint|DCComics}}, his brothers are overweight with absolutely no resemblance to Batman and he accuses them of being Batman while Bats himself is ''right there''. He also generally acts like a loon in a poor portrayal of his adaptation-specific mental illnesses.
41** ComicBook/{{Batman}} villain Sterling Sliversmith went from the swordsman runner of a criminal enterprise who just happened to be obsessed with silver and who nearly got away with his brother's murder to a deranged High School teacher whose lessons are useless and who can't control his students, instead spending time whining about them.
42* Downplayed with Tails in ''ComicBook/SonicTheComic''. He's still good with tools, but he's not the ChildProdigy of the games. [[BigBrotherBully Sonic]] frequently calls him "pixel brain" because of his more naive characteristics. Justified, since this version of Tails comes from the Nameless Zone, which has technology [[MedievalStasis equal to Medieval Britain]].
43* ''ComicBook/UltimateXMen'': ComicBook/KittyPryde isn't the computer whiz her mainline counterpart is.
44* ''ComicBook/WonderWoman''
45** ''ComicBook/WonderWoman1987'': The Amazons as a culture were hit with a stark removal of intelligence, knowledge and scholarship in their ComicBook/PostCrisis revamp. The original Amazons had a Paradise whose culture was based on scholarship and study along with competitive athletics; they had a small space worthy fleet of ships, hosted troubled children in their school, had advanced medical procedures, welcomed refugees, and regularly played [[BulletCatch bullets and bracelets]] as a game. The Silver Age Earth One Amazons weren't QUITE as advanced, but this was a plot point, as the more advanced technology outside of Paradise Island on Earth One FORCED them to be even more isolationist and lead to an attempted coup on Hyppolyte, whom an Amazon scientist believed was holding back their progress. After this coup is suppressed, the Amazons start finding ways to catch up to their Earth Two golden age counterparts. The Post-Crisis Amazons are isolationists trapped in a Bronze Age stasis who are flabbergasted by modern technology and see the first gun they encounter as a mystical artifact to be kept in a vault.
46** In the Golden Age ''ComicBook/{{Wonder Woman|1942}}'' comics, Tillie Heyday was the smartest, calmest and most responsible out of her four siblings and one of the most rational of the Holliday Girls. In ''ComicBook/TheLegendOfWonderWoman2016'' Tilly Heyday is a clueless, impulsive airhead and easily the dumbest of the Holliday girls.
47[[/folder]]
48
49[[folder:Fan Works]]
50* PlayedForLaughs with All Might in ''Fanfic/OneX''. He already had his issues with being a teacher in canon such as regularly referring to cue cards, but that's taken even further here, regularly forgetting his lines to the point Izuku has to subtly coach him, failing to pull off dramatic movements due to technology errors, and showing himself to be a lot less composed to his students. All of 1-X end up considering him much more [[EndearinglyDorky dorky]] in person as a result.
51* In ''Fanfic/BatmanWrittenByAnAI'', Batman, normally one of the smartest men on Earth, briefly forgets his parents are dead and seems to genuinely think he's a bat at points.
52* ''Fanfic/TheBoyWhoCriedIdiot'':
53** Mrs. Johnson believes that Lincoln damaged his textbook and not the raccoon, even though what the raccoon did was ''bite'' the book.
54** In Lincoln's nightmare, he mistakes Martin (a redhead) for Clyde (a black boy) from a distance. Then again, it was a dream.
55** When Leni tells Lynn Sr. that "Linky" punched her, he initially doesn't realise she's talking about Lincoln.
56* Creator/CoeurAlAran: Often used for laughs in his more comedic ''WebAnimation/{{RWBY}}'' fics:
57** ''Fanfic/KnightOfSalem'': Whereas Salem's canon self was a ruthless and seemingly tactically-competent BigBad who apparently understood modern technology, the Salem of this fic is oftentimes ''significantly'' less in touch with the reality of what's happening, she misreads a lot of situations throughout hers, Jaune's and Tyrian's chaotic meandering across Remnant, and she's very behind on the technological and societal progressions since her medieval time -- after she's stripped of her control over all the planet's Grimm, only a combination of Salem managing to be chaotically competent through her stupidity, and her ''still'' being a magic-wielding PhysicalGod by modern Remnant's standards who can fall back on that to cow anyone around her, keep her and her group consistently afloat.
58** ''Fanfic/ProfessorArc'': Ozpin is hit by this, along with "adaptational laziness" and arguably "adaptational insanity". While the [[WebAnimation/{{RWBY}} canon]] Ozpin certainly makes some questionable decisions, there is at least some logic behind them. In this story, Beacon is run by a man who is unable to handle basic paperwork, wastes millions on near-useless things like a golden lemur statue and appears more concerned about his coffee than about the fate of his school. Only Glynda's vigilance prevents Ozpin from destroying Beacon faster and more thoroughly than Cinder. Then again, some characters think he might be ObfuscatingStupidity, but it remains ambiguous how much, if any of his incompetence is actually fake.
59** ''Fanfic/TheSecondTorch'' ([[https://www.fanfiction.net/s/14291843/ link]]): As part of the fic's comedy, Roman Torchwick is significantly sillier, less apt and less self-aware than his conniving, street-smart and vicious canon self. He acts like a bumbling dad to Neopolitan, his solution to Neo being slightly under the weather is to feed her a ''cocktail of every pharmaceutical drug he could nab'' under the assumption that one of them would do the right trick, and he can't ever tell that Neo's subsequent "gestures of adoration" at him during the fic are her trying to throttle his neck in frustration.
60* While Stoick was a leader set in his ways in ''WesternAnimation/HowToTrainYourDragon'', it was mostly out of concern for the prosperity of his village. In ''Fanfic/TheDragonAndTheButterfly'', he allows Berk to fall into ruin when the raids increase out of denial, [[InsaneTrollLogic logics himself]] into thinking that Hiccup's bond with Toothless is just teen angst and that he would be okay with killing Toothless later on, and repeatedly ruins what little progress he makes with Hiccup by either [[OpenMouthInsertFoot saying the wrong thing]] or doing the wrong thing. He had weeks to properly prepare for their assault on the Red Death and a platoon of trained dragon riders at his disposal, yet he ensures that all of the Dragon Riders stay behind out of misguided protectiveness towards his son, turning what was an ignorantly-made LastStand to an outright suicide mission.
61* Xu Shu in ''Fanfic/FarceOfTheThreeKingdoms.'' In the original, he's portrayed as second only to Zhuge Liang (though that is largely an InformedAbility). In this version, he's a GeniusDitz at best, and makes several idiotic mistakes.
62* ''Fanfic/TheMarvelousWorldOfDC'': {{Downplayed|Trope}} with Diana/Wonder Woman. She's not stupid, but she's not an extreme {{Omniglot}} like she is in the comics, and has to rely on her friend Thor to translate English for her. Thankfully, Doctor Strange fixes that problem with his magic.
63* In ''Fanfic/MyHuntsmanAcademia'', Junior is dumb enough to try and pick a fight with all of Team MNVW after Pyrrha alone managed to burn down his entire club. Predictably, they wreck his club pretty quickly. Compare this to his original ''WebAnimation/{{RWBY}}'' counterpart, who was wise enough to remain non-hostile to Yang after she visited his bar again in search of information.
64%%* While far from perfect in [[WebAnimation/{{RWBY}} canon]], Ironwood in ''Fanfic/RubyAndNora'' makes his canon counterpart look like Einstein. [[CreatorsPest It’s because that author dislikes Atlas]]. - Doesn't explain why the character here is dumber here than their canon self
65* ''Fanfic/TheStalkingZukoSeries'': Aang is portrayed as more childish and naive than in canon. As a result of his immaturity and stubborn adherence to Air Nomad ideals, his decision-making skills are much worse than in canon and he rarely contributes anything useful to discussions.
66* ''Fanfic/TheEllieRoseCollection'': As the title suggests, Ellie is made the protagonist instead of Henry, essentially making her the IdiotHero instead of him, whereas in the source material, she often plays the role of the OnlySaneWoman.
67* ''Fanfic/TotalDramaWorldTourTheAnimatorsCut'': Bridgette gets increasingly naive as she falls for Alejandro's charms [[spoiler:and ends up dumping Geoff for him.]]
68* In ''Fanfic/{{Turtles}}'' a retelling of ''Anime/GirlsUndPanzer'' in which Koume, the girl Miho saved in the finals, comes to Oarai, the student council comes off this way. In canon, they restarted their school's tankery team on a whim during a discussion with a MEXT official planning to close the school, despite not knowing how to play or whether they even have any tanks left, because, as Anzu points out, it was better than just sitting around and waiting for the school to close down. The fic, however, goes into the logistical difficulties of setting up a team and training everyone in more detail, making the student council seem even more naive and foolish. To make matters worse, [[IgnoredExpert they don't often listen to Miho and Koume, the two students who have tankery experience]], such as when the two of them propose finding an easier opponent than St. Gloriana for a practice match (it's unclear whether the option was available in canon).
69* ''Fanfic/MeanRabbit'': Unlike [[Manga/MyHeroAcademia canon]] where he was close to being an outright GeniusBruiser, especially in regards to his analytical ability, Izuku is instead too dumb to comprehend using the various tools on his utility belt in a fight or accept that someone could be significantly faster and stronger than him without a Quirk. Notably, Izuku initially thinks Sir Nighteye has an enhancement Quirk and outright refuses to believe Knuckleduster is Quirkless.
70* ''Fanfic/ADipInTheInkwell'': In "Powering Down for the Night", Oona is portrayed as being more idiotic in addition to her usual eccentric personality. She's more prone to ComicallyMissingThePoint, going off on long unrelated tangents about various topics, and is a GeniusSlob when it comes to washing her hands regularly.
71* In ''VideoGame/Psychonauts2'', Nick Johnsmith/Gristol Malik, manages to orchestrate his EvilPlan (which included infiltrating the Psychonauts, brainwashing Dr. Loboto, swapping bodies with Truman, manipulating Raz and eventually uncovering the Maligula Conspiracy) all by himself. In ''Fanfic/RazputinVodelloAU'', it was a cult of Delugionists who got him into the Psychonauts, only for him to quit when he fails to find Maligula. It also doesn't occur to him that the Delugionists want Maligula for reasons unrelated to him and his rightful place as Grulovia's Gzar, TheOmniscientCouncilOfVagueness managing to easily fool him into thinking that they were going to make him their leader (as he petulantly demanded) before killing him.
72[[/folder]]
73
74[[folder:Films -- Animation]]
75* ''Animation/AlicesBirthday'' starts with Alice failing her history exam. In [[Literature/AliceGirlFromTheFuture the original books]], she is very good at history and admits at one point that it is her second favorite subject after biology.
76* Carface in ''WesternAnimation/AllDogsGoToHeaven2'' (and [[RecycledTheSeries its TV series]]) may as well be a completely different character compared to [[WesternAnimation/AllDogsGoToHeaven his original counterpart]].
77* Nourishing in ''WesternAnimation/TheAmazingMaurice''. In the books, she was just nervous and inexperienced; here she's more like TheDitz, with a penchant for ComicallyMissingThePoint.
78* ''WesternAnimation/TheAngryBirdsMovie'': Bomb. In earlier ''Franchise/AngryBirds'' media, he was never portrayed as stupid or incompetent (at least, compared to the other birds) and was even TheSmartGuy at times. In this film, he is significantly dumber, and is reduced to comic relief many times.
79* Onua suffers from this in ''Toys/{{Bionicle}}: Mask of Light''. He was meant to be a wise and mature GeniusBruiser who only ''seemed'' dumb because he [[TheQuietOne rarely spoke]], analyzing every situation before acting. He was so efficient at saving others, it almost became a running joke. The movie portrays him more as a [[DumbMuscle dim-witted]] BoisterousBruiser who [[LeeroyJenkins rushes into a fight without thinking]], resulting in his home town's destruction [[LethallyStupid which nearly cost the lives of hundreds, including his entire team]]. In the film, ''he'' needs to be saved and his only action not to end in an unintended disaster is lifting up a few rocks during the battle at Kini-Nui. The directors claim they based Onua on a stereotypical New York construction worker whose main concern was physical work. Fortunately, later portrayals in books and comics retained his original depiction and some of the traits he displayed in the film would be played straight with actual dumbasses later on, most notably Krekka and Nocturn.
80* ''Franchise/DisneyFairies'': Silvermist was perfectly normal in the chapter books, being somewhat clever, hard-working and with her main character trait being a calm, unflappable demeanor. The movies turn her into a complete space-case who can't even tell irony or exaggeration from fact ("And she just exploded!" "*gasp!* She exploded!?").
81* ''WesternAnimation/TheJungleBook1967'':
82** In Kipling's ''Literature/TheJungleBook'', Baloo is the wise, strict but fair, teacher. Old but well respected by the wolves and Bagheera for his vast knowledge of the laws, languages, and customs of the different jungle animals. In the film, Baloo is a goofy, fun-loving, lazy, and rather irresponsible character. And more of a fun uncle/older brother figure to Mowgli than the mentor/grandfatherly figure he was in the books.
83** In the book, Kaa the python, similarly, is a wise AntiHero figure who once saves Mowgli's life in the book. In the film, he's turned into an IneffectualSympatheticVillain who repeatedly tries to eat Mowgli and fails miserably.
84* In the original ''[[Literature/TheAdventuresOfPinocchio Pinocchio]]'' book, the Fox and the Cat were two con-men on equal footing. In [[WesternAnimation/{{Pinocchio}} the Disney movie]], the Cat is the Fox's bumbling sidekick.
85* The Green Goblin/Norman Osborn from ''WesternAnimation/SpiderManIntoTheSpiderVerse'' is a far worse example than the version in ''WesternAnimation/MarvelsSpiderMan'' mentioned below. This incarnation of the Goblin is shown to be just a dumb brute instead of being an intelligent, scheming, and manipulative criminal mastermind like most versions of the character. Of course, given his size and monstrous appearance, it's entirely possible that his usage of the Goblin Formula had degenerated his mind to a degree.
86* Ben Riley aka [[Characters/MarvelComicsScarletSpider Scarlet Spider]] gets hit with in ''WesternAnimation/SpiderManAcrossTheSpiderVerse'' along with AdaptationalWimp. In the comics he’s a GeniusBruiser being a clone of Peter and incredibly skilled fighter. Here [[BrainlessBeauty he’s got more muscles than brains]], ThinkingOutLoud to what he sees around him while talking like he’s in a Liefeld comic resulting in him effortlessly falling into Gwen’s trap and being defeated. This was certainly a TakeThat from the filmmakers at ''ComicBook/TheCloneSaga'' as well as NinetiesAntiHero era in general (which are both often considered reasonable targets of mockery) but suffice to say Ben’s fans weren’t amused with the portrayal.
87* Zazu in ''WesternAnimation/TheLionKing1994'' is often the butt of slapstick and/or rendered helpless due to his small size (something he's very unhappy about), but he's also quite competent, a trusted advisor to Mufasa, and much wiser than the naive, thrill-seeking Simba. ''WesternAnimation/TheLionKing2019'' dumbs him down into a dopier and more scatterbrained character, to the point where he mistakes ''his own shadow'' for that of a predator's.
88* In Myth/NorseMythology, Odin Allfather was famed for his wisdom and cunning, having established his authority over the Nine Realms using trickery and strategic warfare, having sacrificed his eye to achieve supernatural wisdom from Mimir's well. In ''WesternAnimation/LegendsOfValhallaThor'', Odin is portrayed as a lazy lout who's grown complacent with all of the free food his worshippers give him, and ends up losing his eye out of carelessness with Mjolnir.
89* ''WesternAnimation/TheSwordInTheStone'': Downplayed -- Wart's still smart (albeit in the process of learning), but in [[Literature/TheOnceAndFutureKing the original book]], he knew how to read and write just fine. In the film, Archimedes has to teach him.
90[[/folder]]
91
92[[folder:Films -- Live-Action]]
93* ''Film/BatmanAndRobin'': Whereas the comics Bane was smart enough to come up with a plan to beat Batman, the movie Bane was barely able to speak, only engaging in HulkSpeak and saying one or two words at most when he did. Turning the GeniusBruiser into [[AdaptationalNonsapience barely sentient]] DumbMuscle is one of the many, many reasons why fans would rather [[FanonDiscontinuity pretend that movie never happened]].
94* ''Film/TheBlindSide'''s portrayal of a young Michael Oher falls under this. The film (along with, to a lesser extent, the book it was based on) portrays Oher as a DumbJock who can't succeed on his own merits even while applying himself, both on ''and'' off the field. To his credit, the real Oher took issue with this, and wrote a memoir to set the record straight.
95* ''{{Film/Carrie 1976}}'':
96** Tommy Ross is portrayed as a DumbJock, who was confirmed in a deleted scene to pass Sue's work off as his own in class. In the book, he was noted to be an AcademicAthlete, and the poem was genuinely written by him.
97** Billy Nolan was a cunning, calculating sociopath in the book; the reason Chris was with him there was because she wasn't able to manipulate him. In the film, he's a bumbling idiot whom Chris can easily make do what she wants.
98** Carrie herself in a sense. Sissy Spacek's portrayal of her is far more innocent and naive, prone to acting like a child in certain scenes and speaking out of turn. Her climactic massacre at the prom is hinted to be her losing control or going into shock - whereas the book had everything as premeditated revenge.
99* ''Franchise/ConanTheBarbarian'': In the original stories, Conan is a tactical genius who just happens to be super muscular and, well, a barbarian. In the [[{{Creator/ArnoldSchwarzenegger}} Ahnold]] movies, he's much, much dumber. This can, however, be explained. [[{{EloquentInMyNativeTongue}} The thing is, Schwarzenegger wasn't able to speak English fluently enough]] for the producers' liking at the time, and staunchly refused to [[{{SameLanguageDub}} have his dialog dubbed by someone else]] ever again after ''Film/HerculesInNewYork''. This carries over to the [[{{Film/ConanTheBarbarian2011}} reboot]] starring Creator/JasonMomoa as well, but to a lesser extent due to the fact that Momoa is a native English-speaker.
100* ''Film/TheCountOfMonteCristo2002'': In this version, Edmond Dantes [[NeverLearnedToRead never learned to read or write]], which is what makes it easy for him to get falsely incriminated over allegedly being a Bonapartist and imprisoned in Chateau d'if, and he later learns to read and write from Abbé Faria. This is unlike the original book, where Edmond was already literate and also had a working knowledge of Italian and Romaic (Modern Greek) before becoming more educated by Faria.
101* ''Film/DeathNote'':
102** In the original ''Manga/DeathNote'' anime and manga, Light Yagami is a TeenGenius who is perfectly able to manipulate practically everyone around him. By contrast, the protagonist of the Netflix version is smart, but nothing out of the ordinary, being manipulated instead by the live action counterpart of Misa, Mia.
103** This also applies to the Japanese live action adaptation of Death Note. Light, while still very intelligent in this version, is also more impulsive and makes quite a few mistakes his anime/manga counterpart wouldn't have. Such as feeding Ryuk an apple out in the open when [[AdaptationNameChange Raye Iwamatsu]] was stalking him.
104** L goes from being TheChessmaster and an eccentric BunnyEarsLawyer detective from the source to an impulsive and overly emotional teenager in the movie; with L showing his face to Light in a coffee shop and openly trying to directly goad Light into revealing himself as Kira during dinner with him. [[spoiler:He also has more openness to weaponizing the Death Note for himself, something his counterpart from the anime and manga would never consider a sound option.]]
105* ''Film/EnolaHolmes'': As in the books, this version of Mycroft Holmes has average intelligence and is said to be bitter about lacking the mental gifts of his younger brother Sherlock. In Doyle's original stories, however, Mycroft is ''smarter'' than Sherlock, to the point that he occasionally takes control of the British government.
106* Nermal in the ''Film/{{Garfield}}'' film is portrayed this way compared to in the [[ComicStrip/{{Garfield}} comic strip]]. He's just Garfield's comic relief sidekick. In contrast, his comic version is intelligent and sneaky.
107* ''Film/Frankenstein1931'', the Monster is rather infamously hit with this. In the [[Literature/{{Frankenstein}} original novel]], he was a fast-learning intellectual who's bilingual and cunning enough to frame someone for murder. In the film, he's a nearly mute brute with an intelligence equivalent to a small child and has trouble even walking right. [[AudienceColoringAdaptation The film's version is much more well-known in pop culture than the novel's]].
108* ''Franchise/{{Halloween}}'': In the original series, Michael Myers was a GeniusBruiser. In [[Film/Halloween2007 Rob Zombie's films]], he's more of a straightforward [[TheBrute brute]] with little interest in setting traps for his prey.
109* ''Film/HarryPotter'': A common criticism about the movies is how many of Ron Weasley's scenes in the book changed to turn him into a full comic relief character, and much of his expository dialogue regarding the wizarding world is simply given to Hermione instead.
110* Comicbook/TheJoker is one of the most infamous criminal masterminds in fiction, able to concoct complicated, dastardly schemes and match wits with ComicBook/{{Batman}}. ''Film/Joker2019'''s grittier, more realistic take on the character is too hampered by his mental illnesses to pull off that kind of supervillainy, and most of the havoc he wreaks comes from being in the wrong place at the wrong time.
111* In the original animated Disney version of ''WesternAnimation/SleepingBeauty'' the Three Good Fairies were a bit bumbling but fairly competent, to the point they could be easily considered the heroes of the film. By contrast, in ''Film/{{Maleficent}}'' they are totally incompetent twits who are utterly incapable of properly raising Aurora.
112* Mary Goodnight of the book ''Literature/TheManWithTheGoldenGun'' is an intelligent and competent assistant to James Bond. In the [[Film/TheManWithTheGoldenGun movie]], she's a classic DumbBlonde who makes things worse several times.
113* Franchise/MarvelCinematicUniverse:
114** ''Film/{{Guardians of the Galaxy|2014}}'' does this quite a lot for the sake of laughs. Most notably Drax the Destroyer in the comics is nowhere the near the LiteralMinded simpleton that he is in the MCU. Mantis likewise in the [[Film/GuardiansOfTheGalaxyVol2 sequel]] is equally dim and alongside Drax in the ChristmasSpecial wreak havoc with their chaotic stupidity, this is a stark contrast to the comic where Mantis is a fighting genius who impressed even Vision with her mind. Adam Warlock [[RuleOfThree in turn]] gets this as well, being a GeniusBruiser and WarriorPoet in the comics whom even Thanos respects, whilst [[Film/GuardiansOfTheGalaxyVol3 in his debut]] he’s more of a naive {{Manchild}}. Justified in Adam’s case at least since he was only just recently hatched and BornAsAnAdult so his lack of smarts is an absolute given.
115** Downplayed with ComicBook/BlackPanther, since the MCU's T'Challa is still smart enough to make some of his own gear and run Wakanda, but he's also more down to Earth, whereas the T'Challa of the comics was TheChessmaster and among the Franchise/MarvelUniverse's 10 smartest characters.
116** In the comics, The Shocker was a genius inventor who created his own gear and a pragmatic tactician who evaded capture many times. ''Film/SpiderManHomecoming'' portrayed him as a common thug who relied on the Tinkerer to make his gear [[HowDoIShotWeb and show him how to use it]]. [[spoiler:This applies to [[LegacyCharacter both Jackson Brice and Herman Schultz]], although the former is clearly the dumber of the two.]]
117** ''Film/IronMan2'' sees Justin Hammer get hit with this royally. In the film, he thinks he's a grand manipulator, but in reality, he's a KnowNothingKnowItAll and BigBadWannabe who's the patsy of Ivan Vanko -- a far cry from the comics, where he very much ''is'' TheChessmaster and a DiabolicalMastermind in his own right, having been the BigBad of both "Demon in a Bottle" (manipulating events to include framing Iron Man for murder and exploiting Tony's now-well known alcoholism) and the original "ComicBook/ArmorWars''.
118* ''Film/TheMuppetChristmasCarol'': While not stupid by any means, the Muppet version of The Ghost of Christmas Present is shown to be rather absent-minded and often forgets what he was talking about. He explains that, due to specifically embodying the present, it's difficult for him to focus on anything other than the here and now, an idea unique to this version of the story.
119* ''Film/TheNakedGun'' does this with Frank Drebin, relative to his appearances in ''Series/PoliceSquad''. In ''Police Squad'', he's generally shown to be a highly successful cop, bordering on TheAce, with his main joke being the fact that [[WorldOfWeirdness "competent policework" in the world of the series is totally ludicrous]] and yet he handles it with [[TheComicallySerious the utmost seriousness]]. In ''The Naked Gun'' and its sequels, he's shown to be more of a bumbling idiot who frequently screws up and isn't given much respect, being more of an AccidentalHero.
120* ''Film/SleepingWithTheEnemy'''s film version makes the heroine much stupider than she was in the book. In the latter, she kept her wedding ring on while the film has her flush it down the toilet (and that's one of the reasons her husband discovers she's faked her death). She keeps her wig on in Iowa, while the film has her take it off as soon as she gets there. Additionally, the circumstances surrounding how her husband discovers the swimming lessons are changed; in the book, he just bumped into a friend at the supermarket who was eventually cajoled into revealing the lessons. In the film, Laura gave her name and number, and one of the friends phones the husband to offer condolences. She's also much more tight-lipped in the book than the film.
121* King Shark from ''Film/TheSuicideSquad''. While King Shark has never been a genius in any medium he's appeared in, this one is a childish meathead who only speaks in broken HulkSpeak and has to be herded around from place to place like a small child.
122* Played for laughs in ''Film/TeamAmericaWorldPolice'' with Creator/MattDamon. While by all indications a pretty thoughtful guy in real life, the puppet of him "came out looking retarded" in the manufacturing process per Creator/TreyParkerAndMattStone's words, [[RealLifeWritesThePlot so they changed his personality to fit]]. In the film, [[PokemonSpeak he can only say his own name]].
123* ''Series/VoltesVLegacy'', the LiveActionAdaptation of ''Anime/VoltesV'' does this to Heinel and Katherine (who are named "Zardoz" and "Zandra" respectively).
124** When Zardoz leads the Voltes team straight to his trap, instead of killing them (rendering the SuperRobot without its pilots and leaving Earth without it's only protectors, therefore fulfilling his role of being a ConqueringAlienPrince), he chooses to keep them alive and spar with them....despite spending the vast majority of previous episodes trying to murder them.
125** Zardoz [[spoiler:disguises himself as a human to gather information on Camp Big Falcon]] and learns that the youngest pilot of the Voltes team, John, is a GadgeteerGenius. When he has the Voltes team in his trap, [[TheLeader Steve]] begs him to let Jon since he is just a child. Zardoz decides to have mercy and releases him, and Jon proceeds to rig the teleporter device to rescue the Voltes team. In contrast, Heinel in the original anime was [[WouldHurtAChild willing to hurt children]] and refused to show [[TheLeader Kenichi]] any mercy.
126** In the original anime, when Katherine found out that [[spoiler:Zuhl]] was TheMole, she set up a trap for him using a RobotMe of Heinel, and then tried to have him killed off with a bomb. However, when Zandra found out that Judalah is a turncoat, she gathers her soldiers but toys with for her own entertainment, which leads to Judalah escaping.
127* Downplayed in the ''Film/XMenFilmSeries''. While Wolverine is by no means stupid, the film version lacks his comic counterpart's worldliness and CunningLinguist skills. In fairness, the film version ''is'' suffering from amnesia for most of the time we see him for, and he is shown to be fluent in both French and Japanese at various points.
128[[/folder]]
129
130[[folder:Literature]]
131* ''Film/GodzillaVsKong -- The Official Movie Novelization'' has an exchange that wasn't present in the finished film: [[Characters/MonsterVerseRussellFamily Mark Russell]] and [[Characters/MonsterVerseMonarch Director Guillerman]] can't decide straight away whether they're rooting for Godzilla or Mechagodzilla. This would normally be quite reasonable, except that [[AdaptationalHeroism MonsterVerse Godzilla]] is normally exclusively heroic, whereas Mechagodzilla just ''annihilated'' several blocks of Hong Kong filled with people [[ForTheEvulz simply because he could]]. The book also confirms that Mark hasn't been the most competent father since Madison started to live with him following her mother's death, self-destructively overcompensating for his previous absence from his daughter's life by acting coddling and controlling towards her, and living in complete denial of how this is blatantly frustrating Madison and driving a wedge between them all over again; whereas the movie only suggested this was the case.
132* ''Literature/{{Maskerade}}'' which adapts/spoofs ''Literature/ThePhantomOfTheOpera'' gives this treatment to Christine to an even greater extent than the musical (see below in {{Theatre}}). While musical Christine at least got to keep her [[BeautifulSingingVoice great vocal talent]] in the latter despite losing her agency and bravery from the book, in Terry Pratchett’s version Christine lacks even her great singing voice being a InnocentlyInsensitive BrainlessBeauty who only gets by through her looks and a father pressuring the owners to get her a leading part. This was likely an intentional jab from Pratchett to highlight the shallow standards of the industry as the real protagonist Agnes Nitt has all Christine’s musical strengths from the source material but doesn’t share her beauty thus is looked down upon.
133* Nigel Bruce is notorious for depicting Watson from ''Literature/SherlockHolmes'' as a heavyset buffoon, while in the original books he was a BadassBookworm former British Army doctor. Parodied in [[http://www.harkavagrant.com/index.php?id=210 a strip]] of ''Webcomic/HarkAVagrant'', in which two different Watsons appear, one of whom really loves his jam.
134[[/folder]]
135
136[[folder:Live-Action TV]]
137* In ''Series/{{Cadfael}}'', a plot point in "The Devil's Novice" is condensed by making the involved characters either hubristic or stupid. The dead man, Peter Clemence, is identified by his fancy jewelry, and it's revealed that Tristan, Roswitha (Rosanna in the show) and Janyn were involved in the murder and cover-up when Roswitha's bridesmaid quietly pins Clemence's large cloak-pin to Roswitha--in the excitement of the wedding, they don't notice until Cadfael and the other investigators point it out. In the show, Rosanna ''chooses'' to wear it, even though it's just as big and distinctive as it's described in the book.
138* ''Series/GameOfThrones'':
139** In the books, Sansa Stark can spout historical and literary trivia and identify Renly Baratheon and Barristan Selmy purely by SherlockScan, but in the show, she literally thinks "shift" is a vulgar word for dung. She also remains oblivious to subtle character clues like Loras Tyrell's chivalrous disinterest and Littlefinger's [[StepfordSmiler Stepford Smile]] instead of sensing them after a single conversation, and she trusts her mysterious new maid Shae "even though she tells me not to" rather than assuming she's a spy (which is true of her maids in the novels).
140** Arya Stark is a lot more [[AttackAttackAttack heedless]] and prone to RevengeBeforeReason than in the books, where she prefers to avoid confrontations and only fight when she has no other choice. For instance, in "Mhysa", she attacks a man-at-arms for [[spoiler:bragging about desecrating her brother Robb's body]] without any heed to his comrades, which simply doesn't happen in the books, and in "Two Swords" she's intent on confronting several soldiers at an inn despite the Hound's protests, while in the books it's the Hound who rushes into the inn despite ''Arya's'' protests and she only loses control on the last man standing at the end of the fight.
141** Robb Stark is made more brash and impulsive due to the show's changes to his marriage. In the books, he marries Jeyne Westerling to save her from being DefiledForever by their one-night stand, fully knowing it's a terrible move but choosing [[HonorBeforeReason Jeyne's honour]] anyway. The televised version sees him marry Talisa Maegyr, who faces no such dilemma, because he can't control his [[RagingStiffie raging]]... [[LastSecondWordSwap love]] [[MarryForLove for her]] and refuses to hear what a stupid move it is. He also brings his entire court to [[spoiler:the Twins for the Red Wedding]] in the show, resulting in [[spoiler:all of them being either killed or captured]]. Granted, he doesn't foresee [[spoiler:the Freys' betrayal]] in the novels either, but he does recognize the foolishness of keeping all his eggs in one basket and therefore leaves his wife at Riverrun with the Blackfish rather than bringing her with him.
142** Stannis Baratheon needs to be told of the Lannister incest by Ned Stark and schooled on the Dance of the Dragons by his own daughter Shireen in the show. In the books, he's the first to raise suspicions of incest and co-investigates with Jon Arryn, and he knows enough history to specifically include a faction leader of the Dance in a list of historical traitors. He's also initially very cynical of Melisandre and her religion in the books but dives right into fundamentalism in the show, and his military tactics always seem to boil down to [[AttackAttackAttack direct assaults]].
143** Mace Tyrell isn't the sharpest knife in the drawer in the books either but he's far from the clueless oaf depicted in the show. For instance, his feasting at Storm's End is implied to have been a psychological weapon against Stannis's starving garrison and he personally commands the right wing of the army in the Battle of the Blackwater, which are things that are very hard to imagine him doing in the show.
144** Roose Bolton, for all his political and psychological savvy, can't seem to see what a viper his son Ramsay is and openly rebels against the Lannisters [[MissingStepsPlan before he's ready]] by marrying Ramsay to Sansa (which is [[InformedAttribute never actually shown]] to win him any support among other Northerners), leaving Littlefinger free to descend on them with an army. Contrast this with the books, where Roose keeps Ramsay on a short leash by controlling his goons and ''strengthens'' his ties to the Lannisters by acquiring an imposter Stark bride from them, which brings half the North at least begrudgingly to his side and provides him thousands of reinforcements from the south. In addition, the book version of Roose ''doesn't'' constantly antagonize his psychologically unstable son by threatening to take away his inheritance. In fact, he's creepily at peace with the fact that Ramsay will eventually kill any heirs Roose and his new wife Fat Walda Frey produce since Roose himself is too old to raise new sons to manhood and "boy lords are the bane of any House."
145** The show portrays the Sand Snakes as DumbMuscle whose main pursuits are bickering and trying to kill people, and even when they try to get involved in diplomacy they're just insulted and told to "let the grown women speak." In the books, they're still stubborn and hotheaded but only Obara could even be ''accused'' of not also being cunning and politically aware, and Prince Doran Martell even tasks Nymeria and Tyene with infiltrating the Small Council and the Faith Militant for him. Tyene Sand, although still a MasterPoisoner in the show, displays none of the cunning she does in the books, where she suggests invoking Dorne's gender-neutral inheritance laws to crown Myrcella Baratheon (who is engaged to Doran's son Trystane) as a rival to Myrcella's brother Tommen, the Lannister-supported PuppetKing of the Seven Kingdoms, in an attempt to lure the Lannisters into an unwise attack on their almost-impregnable ThirstyDesert kingdom. Instead she comes across as merely a petulant PsychopathicWomanchild who still calls her mother "Mama."
146** Hand in hand with other deviations, Jon Snow makes more mistakes or just doesn't get to be as clever as in the novels, particularly in his leadership which--unlike TheStrategist of the novels--mostly amounts to being a FrontlineGeneral in numerous battles and skirmishes, many of which are [[FailureHero likely or even unequivocal defeats]] until TheCavalry bails him out. He also often neglects important administration or delegates it to his entourage, whereas in the books he's something of a BadassBureaucrat PenPushingPresident who competently institutes major logistical reforms, has greenhouses built, and frequently negotiates treaties, alliances and loans in a cunning manner. Some fans chalk this divergence all up to not spending enough time being mentored by Qhorin Halfhand in Season 2. However, Book Jon possessed a useful working knowledge of Westerosi history and culture from the start due to his noble education at Winterfell and was noted by [[TheSmartGuy Tyrion Lannister himself]] as a good reader of people and situations, traits not really demonstrated in the show, nor does Show Jon provide Stannis with key advice like his book counterpart did.
147* ''Series/TheLordOfTheRingsTheRingsOfPower'': In the lore, Galadriel was suspicious of Annatar, who was Sauron in disguise, pretty much the second she met him. Here, she develops feelings for Halbrand, an equivalent identity forged by Sauron, and only finds out who he really is after coming upon evidence that he lied about his identity. What's worse is that even after finding this out, she decides to keep it a secret out of shame, even though Sauron knows that the Elves are going to forge the Rings of Power.
148* In ''Series/TheMuppetShow'' (1976), the Swedish Chef, while clumsy and a little scatterbrained, is still a competent chef, whose sketches' humour is usually derived from the bizarre ways he cooks (often involving large weapons), the food itself fighting back (typically when it's a live animal), or something completely out of left field happening (such as when he discovered he had a coffee pot growing out of his head). In ''Series/MuppetsNow'' (2020), the Swedish Chef cannot handle a single thing correctly in the kitchen, and usually just makes a mess while the guest star (a real-life celebrity chef) demonstrates a recipe. In one episode, he can't even make rice properly without both a rice cooker and his kitchen aid Beverly supervising him.
149* Happens a few times in ''Franchise/PowerRangers'', which adapts Japan's ''Franchise/SuperSentai'' series, and it tends to overlap with DemotedToExtra:
150** Consider America's ''[[Series/PowerRangersTimeForce Time Force]]'' vs. Japan's ''[[Series/MiraiSentaiTimeranger Timeranger]]''. In ''Timeranger'', futuristic crime lord Don Dolnero is the BigBad, at least at first. In ''Time Force'', Dolnero is renamed Gluto, and he's the hapless comical minion of the mutant terrorist [[CanonForeigner Ransik]].
151** In Japan's ''[[Series/ZyudenSentaiKyoryuger Kyoryuger]]'', the BigBad is a [[NotZilla reptilian beast]] called Deboth, who later evolves into a smarter [[BishonenLine human-shaped form]]. America's ''[[Series/PowerRangersDinoCharge Dino Charge]]'' replaces him with Sledge, an evil alien {{bounty hunter}} with different motives. Deboth's bestial form is repackaged as Greenzilla, Sledge's ultimate weapon.
152* ''Literature/{{Persuasion}}'': The original book versus ITV's made-for-TV movie adaptation:
153** Mary Musgrove of the book is a self-absorbed, whiny woman constantly seeking attention, mostly by playing sick. She's certainly not the sharpest tool in the box, but nothing in the book suggests that her intelligence is below average. In the 2007 movie, she's absolutely, utterly idiotic and behaves like a lunatic, always twitching and jerking about, unable to read other people, speaking with a nasal voice and laughing and whining all the time and manages to embarrass herself at every opportunity.
154** Charles Musgrove is a fairly intelligent and friendly chap in the book. In the 2007 adaptation, he's a stupid, ditzy guy who doesn't seem to realize how embarrassing his wife is and behaves like a dimwit. For instance, unlike in the book, he doesn't seem to realize that his wife only pretends to be ill.
155* Jessica Wakefield in the television adaptation of ''Literature/SweetValleyHigh''. While her academic performance tended to vary in the books Jessica was almost always depicted as smart, sometimes extremely so. The TV version ranges from being cunning but BookDumb to being a BrainlessBeauty whose stupidity causes any scheme she embarks on to implode.
156* ''Literature/TheWorstWitch'''s 1998 series.
157** Agatha Cackle becomes far more StupidEvil in the series (admittedly this is due to AdaptationExpansion giving her more screentime than the half a chapter she had in the book) and prone to evil gloating - which allows others to either figure out her evil plans or surprise her.
158** Miss Bat becomes a CloudCuckooLander in the series, as opposed to her stern and strict persona in the books. She even flirts with being a MisplacedKindergartenTeacher.
159* In the live-action drama based on ''Manga/YamadaKunAndTheSevenWitches'', Ryu Yamada's inability to grasp complicated concepts reaches new heights. In the drama, he generally cannot understand ''any'' of his friends' observations without long explanations, the most noteworthy example being when Shiraishi has to use five minutes of an episode to explain to him how his copy power works, and whose powers he has copied. In the manga, the same conversation only takes a few panels, and Yamada immediately grasps what's going on once Shiraishi mentions that ''she'' is the one with the body-swap power.
160[[/folder]]
161
162[[folder:Theatre]]
163* ''Theatre/ThePhantomOfTheOpera'': Christine would get hit with this like a ton of bricks in Andrew Loyd Webber’s version of the story. In Gaston Leroux‘s original novel Christine certainly has naive traits but she’s still pretty damn intelligent, has a great deal of pluck and understands the danger she’s in after the Phantom reveals himself to her. The musical version of Christine is firmly TheIngenue and is completely susceptible to the Phantom’s mind games, genuinely believing he is supernatural for most of the musical unlike the novel.
164* ''Theatre/{{Hamilton}}'': In "Hurricane", Hamilton decides to write the Reynolds Pamphlet out of paranoia that his enemies would reveal his secret, but in real life it was for a far more sensible reason. By the time the pamphlet was published, the speculation charges mentioned in "We Know" had made their way to journalists and were publicly released, with said journalists openly accusing Hamilton of financial crimes. Thus, Hamilton released the pamphlet hoping that by admitting to the affair but denying the financial crimes he would be considered trustworthy and the charges would be forgotten (it actually worked too, but his reputation never fully recovered). In short, the historical corruption charges were already public, so his release of the pamphlet made more sense, while the theatrical corruption charges see Hamilton try to get out ahead of them and come out looking worse off for it.
165* ''Theatre/WesterosAnAmericanMusical'': In the original story, Bronn could be suprisingly smart for a low-born sellsword. His parody version is a fairly minor character whose vocabulary is reduced to PokemonSpeak, which makes it hard to portray him anywhere near as smart as his canon counterpart.
166[[/folder]]
167
168[[folder:Video Games]]
169* Throgg in ''TabletopGame/{{Warhammer}}'', particularly in the ''End Times'', is a highly eloquent, philosophical and well-spoken servant of Chaos. In ''VideoGame/TotalWarWarhammer'' he is intelligent... for a troll, speaking in broken English, frequently talking about eating his enemies and being quite dumber. The description of some of his skills do hint that the intelligence might still be there, but voice-wise, it doesn't really show up.
170[[/folder]]
171
172[[folder:Web Animation]]
173* ''WebAnimation/FreedomToons'': The way that Dave Rubin is portrayed is basically [=FreedomToons=]'s answer to ''Film/TeamAmericaWorldPolice'''s Matt Damon. The only barely coherent phrase he can utter is "I agree with that".
174* ''[[WebAnimation/Supermarioglitchy4sSuperMario64Bloopers SMG4]]'':
175** It's probably safe to say that most of the ''[[Franchise/SuperMarioBros Mario]]'' cast was hit by this, but none more so than Mario himself. Canon Mario is intelligent enough to qualify for a doctorate and can come up with a cunning plan when needed. The [=SMG4=] take on Mario can't even count and probably qualifies as having brain damage.
176** Steve from ''VideoGame/{{Minecraft}}'' also qualifies, as he is even stupider than Mario.
177** "[=SMG4's=] Origins" ends up explaining just why everyone has room temperature IQ. We see the world as it was before the first blooper and it shows the cast much closer to their canon counterparts until [[spoiler:the Guardian Pod that [=SMG4=] came in and acted as TheCorruption, which caused the populace to lose intelligence and sanity. When Mario took a hit from it at point-blank range, we see him transform into the cross-eyed, big mustached, gaping mouth version he appears as in the videos.]]
178[[/folder]]
179
180[[folder:Web Videos]]
181* While Ron wasn't exactly the most BookSmart of the trio in ''Franchise/HarryPotter'', he was born and raised in a Wizarding Family and was the most intuitively familiar with Wizarding customs of the trio. In ''WebVideo/WelcomeBackPotter'', he's a {{Fratbro}} that does whatever Jarry says and comes across as a total ditz.
182[[/folder]]
183
184[[folder:Western Animation]]
185* ''WesternAnimation/TheAddamsFamily1992'' made Pugsley Addams significantly dumber than he was in previous continuities, in contrast to being a boy genius in [[Series/TheAddamsFamily the 1960's live-action television show]] and [[WesternAnimation/TheAddamsFamily2019 2019 MGM animated film]] and having average intelligence in [[Film/TheAddamsFamily the live-action films by Orion and Paramount]].
186* While he was still able to threaten a scientist into building him a suit to contain his powers, Mr. Freeze's counterpart in ''WesternAnimation/TheBatman'' isn't a scientist like most other incarnations.
187* ''WesternAnimation/{{Bunnicula}}'': In the books, Harold is the smart one out of the three pets, having to put up with the scatterbrained Chester and the hare-brained title lapin. But in the TV series, Harold is often portrayed as being impossibly stupid in comparison to the now-competent Chester and Bunn.
188* Chase Devineaux in the Franchise/CarmenSandiego [[VideoGame/CarmenSandiegoWordDetective Word Detective]] and [[VideoGame/CarmenSandiegoMathDetective Math Detective]] games was one of Carmen's former partners, and whom she considers a WorthyOpponent as he gives you instructions on accomplishing your goals. In the ''WesternAnimation/CarmenSandiego'' Netflix series, Chase tends to grab the IdiotBall more than once, and Carmen easily outruns him. He also seems to have little knowledge of history and geography, making him less capable of seeing the big picture of Carmen's plans and his obsession with capturing her makes him blind to the times where she is not the enemy.
189* In ''WesternAnimation/ClerksTheAnimatedSeries'', Randal is much dumber than he was in the original film (and also more self-assured).
190* ''WesternAnimation/{{Curbside}}'', an unsuccessful pilot revolving around an AnimatedAnthology starring revamped versions of Creator/{{Terrytoons}} characters, gave this treatment to Muskie Muskrat from ''WesternAnimation/TheDeputyDawgShow''. Rather than a clever trickster who regularly outwitted Deputy Dawg, he is made Deputy Dawg's bumbling sidekick who caused him grief unintentionally through his idiocy.
191* ''WesternAnimation/TheCupheadShow'': In the [[VideoGame/{{Cuphead}} game]] Cuphead could do some dumb things due to being impulsive and greedy, but otherwise seemed fairly average in intellgence, while in the show he's a borderline IdiotHero to the extent that [[TooDumbToLive it's a miracle he hasn't killed himself yet]].
192* Franchise/DCAnimatedUniverse:
193** ''WesternAnimation/BatmanTheAnimatedSeries'':
194*** The series's take on Hugo Strange is far less clever as a manipulator or as an inventor than his PsychoPsychologist and MadScientist comics counterpart.
195*** While not a complete idiot like in ''Film/BatmanAndRobin'', ComicBook/{{Bane}} still isn't as smart as his comics counterpart, who's a strategist on par with Batman and even figured out Bruce was Batman.
196** ''WesternAnimation/JusticeLeague'' reimagines Dr. Destiny as a petty criminal who got his powers via volunteering for experiments with a device called the "Materioptikon". In the comics, Dr. Destiny was a MadScientist and, while ''ComicBook/TheSandman1989'' revealed that the power source was Morpheus's dreamstone, the Materioptikon was something that he built himself.
197* ''WesternAnimation/DCSuperheroGirls2019'':
198** Supergirl is more of an impulsive DumbMuscle than her mainline comics incarnation, being shown to do poorly in the field of academics and preferring to beat enemies with her fists instead of thinking over a strategy.
199** This continuity's Barry Allen is considerably stupider than normal, as "[=#BackInAFlash=]" has him unable to understand Batgirl's verbose explanation on how he can use his super speed to travel through time, while "[=#ScrambledEggs=]" has him break his and Carter Hall's [[EggSitting assigned egg]] by putting it under Carter's rear under the flawed logic that Carter's alter ego being Hawkman and birds typically hatching eggs means that putting the egg under his keister is the best means of keeping the egg safe.
200* ''WesternAnimation/DuckTales2017''
201** In [[ComicBook/DisneyDucksComicUniverse the comics]] and [[WesternAnimation/DuckTales1987 original series]], Dewey was just as smart as his brothers, the latter indicating at times that Dewey was slightly more intelligent than Huey and Louie. Here, he's by far the dumbest of the triplets, having little to no sense of caution, and is heavily implied to have suffered brain damage from being dropped as an egg. Despite this, he still shows some moments of intellect during adventures from time to time.
202** In ''WesternAnimation/DarkwingDuck'' Steelbeak was one of Darkwing’s smarter enemies, being able to get the upper hand on him on several occasions and often didn’t fall for his disguises and traps, and was competent enough to command a small army. Here, he is a complete idiot who can’t do anything he is commanded to right, messes up easy tasks, and works as a henchman rather than being a boss. That said, WordOfGod explains that he just recently joined F.O.W.L. and will grow more dangerous in his subsequent appearances. [[spoiler:And sure enough, in the series finale he [[DumbassNoMore uses the Intelliray on himself to become smarter]] and becomes a DiabolicalMastermind as in the original show.]]
203** This is also the case for Flintheart Glomgold. In the comics and original series, he was a clever schemer. In this show, he is a complete moron to the point he called for tails when flipping a TwoHeadedCoin and actually believed Scrooge died from a disease made up by ''Glomgold himself''.
204** It gets [[ZigZaggingTrope zig-zagged]] from time to time with Launchpad [=McQuack=], DependingOnTheWriter. Many an episode depicts him as a little on the dim side compared to the laid-back version seen in the original, sometimes showcasing him as being unable to [[CannotTellFictionFromReality discern a movie from real life]]. Other times, he just a very enthusiastic pilot who happens to show a lot of HiddenDepths. That being said, every depiction holds no bars when it comes to his infamous [[CaptainCrash tendencies to crashing anything, including himself!]]
205* ''WesternAnimation/HarleyQuinn2019''
206** The show's version of Bane is not the GeniusBruiser of the comics or ''Film/TheDarkKnightRises'' (despite his voice mimicking the latter), but rather a big nerd who likes smoothies, magic tricks, and stand-up comedy, with a very [[HairTriggerTemper short fuse]] and an obsession with StuffBlowingUp. He's not as dumb as his iteration from ''Film/BatmanAndRobin'' though, and he shown to be [[BewareTheSillyOnes incredibly dangerous when he needs to be]], and [[HiddenDepths surprisingly well adjusted compared to his fellow villains]], making him one of the few villains in Gotham that Harley actually likes.
207** Clayface is also hit with this. The original version was no genius by any stretch of the imagination, but he at least was clever enough to hide himself in plain sight until the situation called for it. This Clayface, however, is so meticulously obsessed with being an actor that he often blows his cover or makes crucial mistakes to stay in character, to the point that others are easily able to pick up on his duplicity. That being said, he does get a little smarter in Season 2.
208* ''WesternAnimation/TheLooneyTunesShow'':
209** WesternAnimation/DaffyDuck in the original shorts was more gullible and a bit naive than anything else but he was portrayed as intelligent when it suited him. In ''WesternAnimation/TheLooneyTunesShow'', he is portrayed as a total dumbass who can't do anything right.
210** Lola Bunny, although she doesn't get many lines, seems reasonably intelligent in ''Film/SpaceJam''. In ''The Looney Tunes Show'', she's a total {{Cloudcuckoolander}}. It's somewhat inverted with ''[[WesternAnimation/WabbitALooneyTunesProduction New Looney Tunes]]'', where she is more competent again but still fairly crazy.
211** Cecil Turtle gets this along with AdaptationalJerkass and [[AdaptationalVillainy Villainy]] in ''WesternAnimation/TheLooneyTunesShow''. Cecil in the original shorts was one of the few characters to ever beat Bugs Bunny by outwitting him. He was also one of the few to see through Bugs's [[PaperThinDisguise obvious disguise]] but plays along in order to [[FlawExploitation exploit Bugs's bruised ego]] and trick him into putting himself at a disadvantage. Cecil here, as a result of being the one to antagonize Bugs first, ends up on the receiving end of Bugs's [[KarmicTrickster karmic trickery]], falling for Bugs's disguises and being played like a fiddle. In his second appearance when he has Bugs and Porky at gunpoint, Bugs exploits his ego by [[JustBetweenYouAndMe making him share the details of his crimes]] and tricking him into siting back on Daffy's broken recliner, knocking himself out.
212* While by no means dumb, ComicBook/NormanOsborn in ''WesternAnimation/MarvelsSpiderMan'' gets blindsided by his arrogance more often than in other incarnations, such as [[spoiler:failing to realize Otto Octavius was going to betray him as soon as he told Otto that he owns Otto's tech]].
213* ''WesternAnimation/MyAdventuresWithSuperman'':
214** The titular character gets hit with a [[DownplayedTrope downplayed]] case of this trope. He's nowhere near an idiot and overall fairly intelligent, but unlike his comic counterpart, he's absolutely ''terrible'' at keeping his secret identity under wraps, regularly displaying his powers in obvious ways and then [[BadLiar coming up with unconvincing lies]] to try and cover it up. Lois is quickly able to deduce that Clark is Superman partly because of this, [[spoiler:while Jimmy is revealed to have known about Clark's superpowered status for years because he kept accidentally breaking things and coming up with unbelievable excuses]].
215** In the comics, Heat Wave invented all of his own tech and has never had any problems with maintaining them. This show's version of the character, meanwhile, not only didn't invent her tech, but also doesn't seem particularly good as maintaining them, with them constantly malfunctioning throughout her debut episode.
216* ''Franchise/ScoobyDoo'':
217** Fred in the original series was the smartest member of the gang right next to Velma, if somewhat [[TheGenericGuy generic]], but many adaptations, most notably ''WesternAnimation/APupNamedScoobyDoo'', ''WesternAnimation/WhatsNewScoobyDoo'', and ''WesternAnimation/{{Velma}}'', turn him into a {{Cloudcuckoolander}} (with the latter in particular making him into a [[AdaptationalWealth wealthy]] {{Manchild}}). He also started out this way in ''WesternAnimation/ScoobyDooMysteryIncorporated'' (even taking his fondness for traps even further), but in that show's second season he TookALevelInBadass and got a lot more competent, while ''WesternAnimation/BeCoolScoobyDoo'' sticks closer to his initial portrayal, though he is [[AdaptationalJerkass far more harsher in that show]].
218** Speaking of ''Be Cool, Scooby-Doo!'', Daphne is turned into an airhead who lacks common sense, though she is still competent.
219* While the 1965 version of Morocco Mole from ''WesternAnimation/SecretSquirrel'' was a BumblingSidekick, in the 90's revival, ''Super Secret Secret Squirrel'', he's outright TooDumbToLive.
220* Happens in-universe in ''WesternAnimation/TheSimpsons'' episode "Homer to the Max". The character Homer Simpson in the ShowWithinAShow ''Police Cops'' starts out as a smart badass hero in the pilot episode, only to be replaced with a BumblingSidekick in the series proper, much to Homer's (the real one's) dismay.
221* ''Franchise/SonicTheHedgehog'':
222** In the original games, Sonic was an excellent combatant and could impart great insight in general to others on occasion. He was also pretty sharp-witted, with official sources stating that [[TheSmartGirl Rouge]] sees him as the one guy [[ManipulativeBitch she]] can't outsmart. Contrary to this, [[WesternAnimation/SonicTheHedgehogSatAM SatAM]] and its [[ComicBook/SonicTheHedgehogArchieComics tie-in comic]] made him rather ignorant and BookDumb (game!Sonic was established to enjoy reading books on rainy days), as well as much more reckless, immature and full of himself, usually so that he would play the role of the [[RightWayWrongWayPair ever-wrong]] [[RedOniBlueOni Red Oni]] to [[StandardizedLeader Sally's]] [[RightWayWrongWayPair always-right]] [[RedOniBlueOni Blue Oni]].
223** Similarly, Tails was a [[ChildProdigy kid]] GadgeteerGenius in the games. The 90s western cartoons and comics ignored this side of him, turning him into a more stereotypically immature KidSidekick and TagalongKid. [=SatAM=] notably had [[CanonForeigner Canon Foreigners]] Rotor and later Sally play the role of Gadgeteer Genius instead, with Tails being DemotedToExtra as a result.
224** ''WesternAnimation/SonicBoom'':
225*** In the original games, Knuckles was merely SuperGullible and poor at dealing with people, having lived in isolation for most of his life. He was still able to perform such feats as translating ancient runes. Here, he's little more than DumbMuscle; he's [[NeverLearnedToRead illiterate]], it takes him a few seconds to ''understand left from right'' and he can't even count.
226*** [[BigBad Dr. Eggman.]] While his game counterpart was also a comical character, he was more of a NotSoHarmlessVillain, capable of concocting good plans and being a real threat. This incarnation is more of an IneffectualSympatheticVillain who tends to come up with ridiculous plans that rarely pose a major threat.
227** ''WesternAnimation/SonicPrime'': In contrast to his video game counterpart, this series' incarnation of Sonic makes numerous mistakes with disastrous consequences (the entire premise gets started because he accidentally destroyed the Prism Shard despite his friends' warnings) and is much less smart, often requiring others such as Shadow to ring him in. Not helping matters is that the producers of ''Prime'' have stated that the series is canon to the games; the latest one to have come out during the show's production, ''VideoGame/SonicFrontiers'', had Sonic at arguably his most empathetic and most competent.
228* ''WesternAnimation/SpiderManTheAnimatedSeries'': In the comics, the Hobie Brown version of the [[Characters/SpiderManSupportingCharacters Prowler]] was a GadgeteerGenius and made his suit himself. In the series, Hobie has no such skills and has to turn to ComicBook/TheKingpin's men to get his suit.
229* ''WesternAnimation/TakAndThePowerOfJuju2007'' made Tak noticeably dumber than he was in [[VideoGame/TakAndThePowerOfJuju the]] [[VideoGame/Tak2TheStaffOfDreams video]] [[VideoGame/TakTheGreatJujuChallenge games]].
230* ''Franchise/TeenageMutantNinjaTurtles''
231** The 1987 series Turtles and Shredder from ''WesternAnimation/TurtlesForever'' are portrayed as reckless, immature, pizza obsessed idiots and a clownish buffoon respectively. In ''WesternAnimation/TeenageMutantNinjaTurtles1987'', the Turtles were a lot more careful in their actions and while they didn't think things through from time to time, they weren't as dumb and incompetent as the film made them out to be, Leonardo and Donatello took most situations seriously, and Shredder though having comical moments here and there could be a major threat and was a competent fighter who usually got the better of the turtles in hand to hand combat.
232** While Michelangelo has been depicted as the most laid-back and even bumbling member of the turtles before, his [[WesternAnimation/TeenageMutantNinjaTurtles2012 2012]] counterpart is a complete idiot. From nearly getting the Turtles killed by Shredder because he wasted all their smoke bombs previously for the most trivial of reasons, to nearly getting himself killed by pouring experimental goo of Donatello's on himself that was clearly labeled as toxic and dangerous. The episode "Journey to the Center of Mikey's Mind" even revealed he never mentally matured past the age of six.
233[[/folder]]

Top