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An elephant who features in ''Literature/HortonHearsAWho'', ''Literature/HortonHatchesTheEgg'', and ''Horton and the Kwuggerbug''.

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An elephant who features in ''Literature/HortonHearsAWho'', ''Literature/HortonHatchesTheEgg'', and ''Horton "[[Literature/HortonAndTheKwuggerbugAndMoreLostStories Horton and the Kwuggerbug''.Kwuggerbug]]".

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The boy from ''Literature/McElligotsPool'', ''Literature/AndToThinkThatISawItOnMulberryStreet'', and "[[HortonAndTheKwuggerbugAndMoreLostStories Marco Comes Late]]".

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The boy from ''Literature/McElligotsPool'', ''Literature/AndToThinkThatISawItOnMulberryStreet'', and "[[HortonAndTheKwuggerbugAndMoreLostStories "[[Literature/HortonAndTheKwuggerbugAndMoreLostStories Marco Comes Late]]".

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The boy from ''Literature/McElligotsPool'', ''Literature/AndToThinkThatISawItOnMulberryStreet'', and ''Literature/MarcoArrivesLate''.

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The boy from ''Literature/McElligotsPool'', ''Literature/AndToThinkThatISawItOnMulberryStreet'', and ''Literature/MarcoArrivesLate''."[[HortonAndTheKwuggerbugAndMoreLostStories Marco Comes Late]]".

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The boy from ''McElliot's Pool'', ''And to Think That I Saw it on Mulberry Street'', and ''Marco Arrives Late''.

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The boy from ''McElliot's Pool'', ''And to Think That I Saw it on Mulberry Street'', ''Literature/McElligotsPool'', ''Literature/AndToThinkThatISawItOnMulberryStreet'', and ''Marco Arrives Late''.''Literature/MarcoArrivesLate''.
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** This is inverted in the original ''How the Grinch Stole Christmas'' book, where the Grinch is a Who like his neighbors and not part of a different species; whereas most Whos are cheerful, kind, sociable, and optimistic, the Grinch is a grumpy, antisocial loner who feels so alienated from his own kind that he tries to ruin their holiday.

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** This is inverted in the original ''How the Grinch Stole Christmas'' book, where the Grinch is a Who like his neighbors and not part of a different species; whereas most Whos are cheerful, kind, sociable, friendly, and optimistic, the Grinch is a grumpy, antisocial loner who feels so alienated from his own kind that he tries to ruin their holiday.

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* AdaptationSpeciesChange: In the original book version of ''How the Grinch Stole Christmas'', the Grinch was a Who like everyone else, and only his [[RedEyesTakeWarning red eyes]] and bad-tempered disposition distinguished him from other Whos. The animated version gave him green fur that has been a staple of his character ever since, effectively retconning him into belonging to a different race altogether; "Grinch" went from a personal moniker to the name of his species, and FantasticRacism is sometimes implied to have played a role in his outlook on life.



* AdaptationalSpeciesChange: In the original book version of ''How the Grinch Stole Christmas'', the Grinch was a Who like everyone else, and only his [[RedEyesTakeWarning red eyes]] and bad-tempered disposition distinguished him from other Whos. The animated version gave him green fur that has been a staple of his character ever since, effectively retconning him into belonging to a different race altogether; "Grinch" went from a personal moniker to the name of his species, and FantasticRacism is sometimes implied to have played a role in his outlook on life.

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* AdaptationalSpeciesChange: In the original book version of ''How the Grinch Stole Christmas'', the Grinch was a Who like everyone else, and only his [[RedEyesTakeWarning red eyes]] and bad-tempered disposition distinguished him from other Whos. The animated version gave him green fur that has been a staple of his character ever since, effectively retconning him into belonging to a different race altogether; "Grinch" went from a personal moniker to the name of his species, and FantasticRacism is sometimes implied to have played a role in his outlook on life.



* MySpeciesDothProtestTooMuch: Zigzagged. "The Hoobub and the Grinch" and ''The Grinch Grinches the Cat in the Hat'' imply that Grinches are all mean and when he stops being mean after ''How the Grinch Stole Christmas'', he was an exception, but ''The Grinch Grinches the Cat in the Hat'' also implies that [[GoodParents his mother was nice]].

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* MySpeciesDothProtestTooMuch: MySpeciesDothProtestTooMuch:
**
Zigzagged. "The Hoobub and the Grinch" and ''The Grinch Grinches the Cat in the Hat'' imply that Grinches are all mean and when he stops being mean after ''How the Grinch Stole Christmas'', he was an exception, but ''The Grinch Grinches the Cat in the Hat'' also implies that [[GoodParents his mother was nice]].nice]].
** This is inverted in the original ''How the Grinch Stole Christmas'' book, where the Grinch is a Who like his neighbors and not part of a different species; whereas most Whos are cheerful, kind, sociable, and optimistic, the Grinch is a grumpy, antisocial loner who feels so alienated from his own kind that he tries to ruin their holiday.

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Grumpy Bear is no longer a trope. Moving examples to other tropes when applicable.


* GrumpyBear: He's a bit of a grump, whereas everyone else in Whoville is perky and happy.



* MeaningfulName: His name implies that he is a person who is [[{{Jerkass}} mean-spirited and unfriendly]], and it also describes a [[GrumpyBear grumpy person]] who is [[TheKilljoy a killjoy that spoils the pleasure of others]]. This also means that [[ExactlyWhatItSaysOnTheTin a grinch is a person who does not like other people celebrating or enjoying themselves, especially a person who does not like Christmas.]]

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* MeaningfulName: His name implies that he is a person who is [[{{Jerkass}} mean-spirited and unfriendly]], and it also describes a [[GrumpyBear grumpy person]] person who is [[TheKilljoy a killjoy that spoils the pleasure of others]]. This also means that [[ExactlyWhatItSaysOnTheTin a grinch is a person who does not like other people celebrating or enjoying themselves, especially a person who does not like Christmas.]]

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* FunPersonified: An cat that loves providing fun with everyone.

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* FunPersonified: An A cat that loves providing fun with everyone.



* {{Mascot}}: Acts as one for Dr. Seuss as a whole.

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* JerkWithAHeartOfGold: He may create messes, but he always cleans them up.
%%*
{{Mascot}}: Acts as one for Dr. Seuss as a whole.whole.
* {{Omniglot}}: Zigzagged. In the cartoon, he translates his name into French, Spanish, German, and Irish, but he also [[CloudCuckoolanguage makes up some languages]] called "Eskimo" and "boogoo-googoo", claims to be a "''*honk*'' in a ''*honk, honk, honk*''" in Scottish Gaelic and a "yodel-yodel-yodel in a yodel-ay-hee-hoo!" in Swiss, and needs help translating his name into Russian and Dutch.



* TheGrinch: [[CaptainObvious The trope namer.]] In the live-action movie, he refers to himself as 'The Grinch' when he meets [[ChildrenAreInnocent Cindy Lou Who]].

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* TheGrinch: [[CaptainObvious The trope namer.]] namer]]; he "hated Christmas, the whole Christmas season". In the live-action movie, he refers to himself as 'The Grinch' when he meets [[ChildrenAreInnocent Cindy Lou Who]].



* MeaningfulName: His name implies that he is a person who is [[{{Jerkass}} mean-spirited and unfriendly]], and it also describes a [[GrumpyBear grumpy person]] who is [[TheKilljoy a killjoy that spoils the pleasure of others]].
** This also means that [[ExactlyWhatItSaysOnTheTin a grinch is a person who does not like other people celebrating or enjoying themselves, especially a person who does not like Christmas.]]

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* MeaningfulName: His name implies that he is a person who is [[{{Jerkass}} mean-spirited and unfriendly]], and it also describes a [[GrumpyBear grumpy person]] who is [[TheKilljoy a killjoy that spoils the pleasure of others]].
**
others]]. This also means that [[ExactlyWhatItSaysOnTheTin a grinch is a person who does not like other people celebrating or enjoying themselves, especially a person who does not like Christmas.]]



* YourSizeMayVary: In ''How the Grinch Stole Christmas'', he's the size of a Who (who are microscopic), but in ''The Grinch Grinches the Cat in the Hat'', he's human-sized.



* AdaptationalIntelligence: In the book, he was somewhat dim-witted and was bouncing a yoyo despite his world being under threat and didn't get it together until he was told, but in the movie, he recognises the danger and builds a complicated noise-making device.
* AdaptationalSkill: In the movie, he shows the ability to invent machines and play music.
* DissonantSerenity: In the book, he is simply standing there bouncing a yoyo while his world is under threat.



* NamedByTheAdaptation: Downplayed. In the book he has NoFullNameGiven, but in the movie, his last name is [=McDodd=].



* NoFullNameGiven: In the book, his last name is unspoken, though in the movie, it's "[=McDodd=]".



* RelatedInTheAdaptation: In the movie, he and the Mayor are father and son.



[[quoteright:225:https://static.tvtropes.org/pmwiki/pub/images/6eb0536ce951e07a6386534e01eefbb6.jpg]]



* AdaptationalHairstyleChange: She wears her hair down in the book and in most adaptations, but in the movie, she has pigtails.
* CharacterExaggeration: In the book, she's a bit concerned about what her mother would say if she saw the cat's antics, but in the movie, she's a straight-up control freak.
* NamedByTheAdaptation: Downplayed. She's given a last name (Walden) in the movie.
* NoFullNameGiven: In the book, and in most adaptations, her last name isn't revealed.



[[quoteright:225:https://static.tvtropes.org/pmwiki/pub/images/images_008.png]]



* AdaptedOut: In ''The Cat in the Hat Knows a Lot About That'', he is absent and replaced by Nick, Sally’s best friend and neighbor.



* AdaptedOut / ChuckCunninghamSyndrome: In ''The Cat in the Hat Knows a Lot About That'', he is absent and replaced by Nick, Sally’s best friend and neighbor.


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* NamedByTheAdaptation: His name is Conrad Walden in the movie.


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* PinkMeansFeminine: The Cat in the Hat's daughter wears pink, and she's the only girl of the bunch.


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[[/folder]]

[[folder:The Fish]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/character_fish_cat_in_the_hat.png]]
[[caption-width-right:350:No, no! Make that cat go away! Tell that cat in the hat you do ''not'' want to play!]]
The grumpy, talking pet fish of Sally and her brother, who appeared in ''The Cat in the Hat'' and ''WesternAnimation/TheCatInTheHatKnowsALotAboutThat''.
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* AlliterativeName: In the cartoon, his name is Carlos K. Krinklebine.
* IDontThinkThatsSuchAGoodIdea: He's often telling the cat that his actions are inadvisable, when he's not outright telling him to leave.
* NamedByTheAdaptation: He's unnamed in the book and most adaptations, but in the adaptation, he's named Carlos K. Krinklebine.
* NoNameGiven: In most iterations, he's unnamed.
* TalkingAnimal: He can talk but is otherwise not anthropomorphic.
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Outnumbered Sibiling is no longer a trope. Zero Context Examples and examples that do fit existing tropes will be deleted.


* OutnumberedSibling: In the book at least, he's the only boy in a family with ''ninety-six'' sisters!
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[[foldercontrol]]
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YMMV


* NoNameGiven: In the book, he is unnamed, but in the movie, [[NamedByTheAdaptation his name is Conrad]]. [[FanNickname Some sources give his name as “Dick” or “Tommy” in the Living Books game]].

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* NoNameGiven: In the book, he is unnamed, but in the movie, [[NamedByTheAdaptation his name is Conrad]]. [[FanNickname Some sources give his name as “Dick” or “Tommy” in the Living Books game]].
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* AdaptationalComicRelief: Of the AdaptationalPersonalityChange category. In the ''How the Grinch Stole Christmas'' book and animated short, he was serious-minded, antipathetic, resentful, and a scheming Who that happily and cunningly attempts at ruining Christmas. But in the live-action movie, he's an [[EvilIsHammy hammy,]] LaughablyEvil {{anti villain}} who is sociopathic.

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* AdaptationalComicRelief: Of the AdaptationalPersonalityChange AdaptationPersonalityChange category. In the ''How the Grinch Stole Christmas'' book and animated short, he was serious-minded, antipathetic, resentful, and a scheming Who that happily and cunningly attempts at ruining Christmas. But in the live-action movie, he's an [[EvilIsHammy hammy,]] LaughablyEvil {{anti villain}} who is sociopathic.
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* BreakoutCharacter: The success of his book has made him this for Dr. Seuss as a whole, going on to make numerous appearances in other books beyond his own and become the mascot of the Dr. Seuss brand.


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* {{Mascot}}: Acts as one for Dr. Seuss as a whole.
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* ThePersonWithTheClothing: His name is not revealed, it's just "The Cat in the Hat".

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* ThePersonWithTheClothing: PersonWithTheClothing: His name is not revealed, it's just "The Cat in the Hat".
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* TookALevelInKindness: While he does still retain a bit of a mischievous streak, he becomes a far more pleasant and less troublemaking individual after his original books.
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* AccessoryWearingCartoonAnimal: Wears only a bow tie and a cat.

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* AccessoryWearingCartoonAnimal: Wears only a bow tie and a cat.hat.
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minor edits


* AdaptationPersonalityChange: He's more goofy in the movie.
* CloudCuckooLander: In the movie, he's notably goofy and likes to play silly games.

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* AdaptationPersonalityChange: He's more goofy goofier in the movie.
* CloudCuckooLander: {{Cloudcuckoolander}}: In the movie, he's notably goofy and [[FunPersonified likes to play silly games.]]
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minor edits


* MeaningfulName: His name implies that he is a person who is [[{{Jerkass}} mean-spirited and unfriendly]], and it also describes a [[GrumpyBear grumpy person]] who is a {{killjoy}} that spoils the pleasure of others.

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* MeaningfulName: His name implies that he is a person who is [[{{Jerkass}} mean-spirited and unfriendly]], and it also describes a [[GrumpyBear grumpy person]] who is [[TheKilljoy a {{killjoy}} killjoy that spoils the pleasure of others.others]].
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minor edit


* AdaptationalComicRelief: In the ''How the Grinch Stole Christmas'' book and animated short, he was serious-minded, antipathetic, resentful, and a scheming Who that happily and cunningly attempts at ruining Christmas. But in the live-action movie, he's an [[EvilIsHammy hammy,]] LaughablyEvil {{anti villain}}.

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* AdaptationalComicRelief: Of the AdaptationalPersonalityChange category. In the ''How the Grinch Stole Christmas'' book and animated short, he was serious-minded, antipathetic, resentful, and a scheming Who that happily and cunningly attempts at ruining Christmas. But in the live-action movie, he's an [[EvilIsHammy hammy,]] LaughablyEvil {{anti villain}}.villain}} who is sociopathic.

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Perhaps Dr. Seuss's most famous character, the Cat in the Hat is an anthropomorphic cat who wears a candy-striped hat and is a real goofball, liking to cause chaos but always cleaning up afterwards. He features in ''Literature/TheCatInTheHat'', ''Literature/TheCatInTheHatComesBack'', ''Literature/ICanReadWithMyEyesShut'', ''WesternAnimation/TheGrinchGrinchesTheCatInTheHat'', ''WesternAnimation/TheCatInTheHatKnowsALotAboutThat'', and ''Literature/ICanLick30TigersToday''.

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Perhaps Dr. Seuss's most famous character, the Cat in the Hat is an anthropomorphic cat who wears a candy-striped hat and is a [[{{Cloudcuckoolander}} real goofball, goofball]], liking to cause chaos but always cleaning up afterwards. He features in ''Literature/TheCatInTheHat'', ''Literature/TheCatInTheHatComesBack'', ''Literature/ICanReadWithMyEyesShut'', ''WesternAnimation/TheGrinchGrinchesTheCatInTheHat'', ''WesternAnimation/TheCatInTheHatKnowsALotAboutThat'', and ''Literature/ICanLick30TigersToday''.



* FunPersonified: An cat that loves providing fun with everyone.



[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/grinch_from_dr_seuss_illustration.jpg]]
[[caption-width-right:350:With this coat, and this hat! I'll look just like Saint Nick.]]



* AdaptationalComicRelief: In the ''How the Grinch Stole Christmas'' book and animated short, he was serious-minded, antipathetic, resentful, and a scheming Who that happily and cunningly attempts at ruining Christmas. But in the live-action movie, he's an [[EvilIsHammy hammy,]] LaughablyEvil {{anti villain}}.



* AmbiguousSituation: In the book, it's unknown why he hates Christmas and the narrator suggests three possibilities: his head isn't screwed on properly, his heart is too sizes too small (which they believe to be the likeliest reason) or his shoes are too tight. "The Hoobub and the Grinch" and ''The Grinch Grinches the Cat in the Hat'' suggest that it's simply a species thing, whereas the live-action movie implies that it's because he had problems in his youth.

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* AmbiguousSituation: In the book, it's unknown why he hates Christmas and the narrator suggests three possibilities: his head isn't screwed on properly, his heart is too two sizes too small (which they believe to be the likeliest reason) or his shoes are too tight. "The Hoobub and the Grinch" and ''The Grinch Grinches the Cat in the Hat'' suggest that it's simply a species thing, whereas the live-action movie implies that it's because he had problems in his youth.



* TheGrinch: [[CaptainObvious The trope namer.]] In the live-action movie, he refers to himself as 'The Grinch' when he meets [[ChildrenAreInnocent Cindy Lou Who]].



* MeaningfulName: His name implies that he is a person who is [[{{Jerkass}} mean-spirited and unfriendly]], and it also describes a [[GrumpyBear grumpy person]] who is a {{killjoy}} that spoils the pleasure of others.
** This also means that [[ExactlyWhatItSaysOnTheTin a grinch is a person who does not like other people celebrating or enjoying themselves, especially a person who does not like Christmas.]]



* RedemptionPromotion: He was an ordinary person as a grump when trying to steal Christmas and ruin the Whos' lives. But when his heart grew three sizes, he found the compassion gave him [[SuperStrength the strength of ten Grinches plus two]].

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* RedemptionPromotion: He was an ordinary person as a grump when trying to steal Christmas and ruin the Whos' lives. But when his heart grew three sizes, he found the compassion gave him [[SuperStrength the strength of ten Grinches plus two]].two,]] showing a HeelFaceTurn.
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[[folder: Sally's brother]]

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[[folder: Sally's brother]]brother/Conrad]]



* AdaptedOut: In ''The Cat in the Hat Knows a Lot About That'', he doesn't feature.

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* AdaptedOut: AdaptedOut / ChuckCunninghamSyndrome: In ''The Cat in the Hat Knows a Lot About That'', he doesn't feature.is absent and replaced by Nick, Sally’s best friend and neighbor.



* NoNameGiven: In the book, he isn't named, but in the movie, [[NamedByTheAdaptation his name is Conrad]].

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* NoNameGiven: In the book, he isn't named, is unnamed, but in the movie, [[NamedByTheAdaptation his name is Conrad]].Conrad]]. [[FanNickname Some sources give his name as “Dick” or “Tommy” in the Living Books game]].
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* NoNameGiven: In the book, he isn't named, but in the movie, [[NamedByTheAdaptationn his name is Conrad]].

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* NoNameGiven: In the book, he isn't named, but in the movie, [[NamedByTheAdaptationn [[NamedByTheAdaptation his name is Conrad]].
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* GoodEyesEvilEyes: As a grouch with his heart too small, the Grinch's eyes have red irises and yellow sciera. When his heart grows and he makes his HeelFaceTurn, his sciera turns white and his irises blue.


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* RedemptionPromotion: He was an ordinary person as a grump when trying to steal Christmas and ruin the Whos' lives. But when his heart grew three sizes, he found the compassion gave him [[SuperStrength the strength of ten Grinches plus two]].
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* HonorableElephant: Even when he really should have realized he was being taken advantage of.
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* NoNameGiven: In the book, he isn't named, but in the movie, his name is Conrad.

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* NoNameGiven: In the book, he isn't named, but in the movie, [[NamedByTheAdaptationn his name is Conrad.Conrad]].

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* AdaptationBackstoryChange: In the book, nobody knows why the Grinch hates Christmas, but in the live-action movie, it's because the mayor of Whoville gave him a shaver for Christmas to make fun of him shaving his fur to impress his crush.


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* AdaptationalBackstoryChange: In the book, nobody knows why the Grinch hates Christmas, but in the live-action movie, it's because the mayor of Whoville gave him a shaver for Christmas to make fun of him shaving his fur to impress his crush.
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These are recurring characters in the books by Creator/DrSeuss. For characters belonging to a specific book, look at the TV Tropes pages for the particular book.

[[folder: The Cat in the Hat]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/04seuss1_articlelarge.jpg]]
[[caption-width-right:350:Look at me, look at me, look at me now! It is fun to be on TV Tropes, but you have to know how.]]
Perhaps Dr. Seuss's most famous character, the Cat in the Hat is an anthropomorphic cat who wears a candy-striped hat and is a real goofball, liking to cause chaos but always cleaning up afterwards. He features in ''Literature/TheCatInTheHat'', ''Literature/TheCatInTheHatComesBack'', ''Literature/ICanReadWithMyEyesShut'', ''WesternAnimation/TheGrinchGrinchesTheCatInTheHat'', ''WesternAnimation/TheCatInTheHatKnowsALotAboutThat'', and ''Literature/ICanLick30TigersToday''.
----
* AbandonedCatchphrase: In ''The Cat in the Hat'', he says, "Look at me now" and "I'll show you another great trick that I know" a lot, but in later books, he doesn't say them.
* AccessoryWearingCartoonAnimal: Wears only a bow tie and a cat.
* AnimalsNotToScale: A human-sized (six feet tall according to ''VideoGame/LivingBooks'' and the live-action film) cat.
* {{Bookworm}}: "I Can Read with My Eyes Shut" reveals that he loves to read.
* CloudCuckoolander: He's very goofy. This is the guy whose idea of fun is eating cake in the tub and balancing a goldfish bowl.
* FunnyAnimal: An anthropomorphic cat.
* FurryReminder:
** In the live-action movie, he [[HairballHumor coughs up a hairball]].
** In ''WesternAnimation/TheCatInTheHatKnowsALotAboutThat'', the episode on big cats reveals that he can walk silently just like a normal cat.
---> ''In spite of my hat, I am a cat''.
** In his Living Book, he says, "Meow" at one point.
* ThePersonWithTheClothing: His name is not revealed, it's just "The Cat in the Hat".
* RaceNameBasis: When people are addressing him, they usually just call him "Cat".
[[/folder]]

[[folder: The Grinch]]
Another famous character, who features in ''Literature/HowTheGrinchStoleChristmas'', "The Hoobub and the Grinch", and ''The Grinch Grinches the Cat in the Hat''.
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* AdaptationBackstoryChange: In the book, nobody knows why the Grinch hates Christmas, but in the live-action movie, it's because the mayor of Whoville gave him a shaver for Christmas to make fun of him shaving his fur to impress his crush.
* AdaptationDyeJob: In the first ''How the Grinch Stole Christmas'' book, his fur is black and white, but later copies and all other stories with him in them have it green.
* AmbiguousSituation: In the book, it's unknown why he hates Christmas and the narrator suggests three possibilities: his head isn't screwed on properly, his heart is too sizes too small (which they believe to be the likeliest reason) or his shoes are too tight. "The Hoobub and the Grinch" and ''The Grinch Grinches the Cat in the Hat'' suggest that it's simply a species thing, whereas the live-action movie implies that it's because he had problems in his youth.
* ADogNamedDog: According to "The Hoobub and the Grinch", Grinch is his species.
* GrumpyBear: He's a bit of a grump, whereas everyone else in Whoville is perky and happy.
* HeelFaceTurn: He starts out bad and wanting the Whos to suffer, but then he turns good when the Whos are happy and gives their presents back.
* JerkWithAHeartOfGold: In ''The Grinch Grinches the Cat in the Hat'', he's a nice guy deep down but acts rude because that's what Grinches do.
* MySpeciesDothProtestTooMuch: Zigzagged. "The Hoobub and the Grinch" and ''The Grinch Grinches the Cat in the Hat'' imply that Grinches are all mean and when he stops being mean after ''How the Grinch Stole Christmas'', he was an exception, but ''The Grinch Grinches the Cat in the Hat'' also implies that [[GoodParents his mother was nice]].
[[/folder]]

[[folder: Horton]]
[[quoteright:200:https://static.tvtropes.org/pmwiki/pub/images/horton.gif]]
An elephant who features in ''Literature/HortonHearsAWho'', ''Literature/HortonHatchesTheEgg'', and ''Horton and the Kwuggerbug''.
----
* AdaptationPersonalityChange: He's more goofy in the movie.
* CloudCuckooLander: In the movie, he's notably goofy and likes to play silly games.
* MadLibsCatchphrase: In ''Horton Hatches the Egg'' and the movie version of ''Horton Hears a Who'', his catchphrase is "I meant what I said and I said what I meant, and [fill in the blank] 100%" (usually "an elephant's faithful").
* NiceGuy: He is very civil and is never mean to anyone, [[TurnTheOtherCheek even if they were mean to him]].
* TalkingAnimal: He can talk, but he walks on all fours and acts like a normal elephant.
* UndyingLoyalty: He'll do whatever he can to do the right thing, even if it means pain or misery or SleepDeprivation for him, because "an elephant's faithful one hundred percent". TruthInTelevision as according to animal experts, elephants really are faithful.
[[/folder]]

[[folder: Jojo]]
The son of the Mayor of Whoville, who appears in ''Horton Hears a Who'' and his name is seen written on a present in ''How the Grinch Stole Christmas''.
----
* AdaptationalAngstUpgrade: In the book, he seems contented, but in the movie, he doesn't want to speak to his dad because he doesn't want to be mayor.
* AdaptationalDyeJob: In the book, his clothes are blue, but in the movie, they're black and grey.
* GadgeteerGenius: In the movie, he creates an elaborate noise-making machine.
* {{Neologism}}: His word to make everyone hear the Whos is "yopp".
* OddNameOut: In the movie at least, he's the only one of his parents' children who doesn't have a name beginning with H (he's also the oldest and the only boy, so he sticks out like a sore thumb).
* OutnumberedSibling: In the book at least, he's the only boy in a family with ''ninety-six'' sisters!
[[/folder]]

[[folder: Sally]]
Sally is the sister of the narrator in ''The Cat in the Hat'' and ''The Cat in the Hat Comes Back''.
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[[/folder]]

[[folder: Sally's brother]]
The narrator in ''The Cat in the Hat'' and ''The Cat in the Hat Comes Back''.
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* AdaptationPersonalityChange: In the book, he seems pretty responsible and concerned about what his and Sally's mother would do or say if she finds out about the cat's antics. In the movie, however, he's a daredevil and a rule-breaker.
* AdaptedOut: In ''The Cat in the Hat Knows a Lot About That'', he doesn't feature.
* CloudCuckoolander: In the movie, he likes to ''slide downstairs''.
* {{Narrator}}: He narrates both ''The Cat in the Hat'' and ''The Cat in the Hat Comes Back''.
* NoNameGiven: In the book, he isn't named, but in the movie, his name is Conrad.
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[[folder: Other Cats in Hats]]
Several smaller hatted cats have appeared, all black and white like ''The'' Cat in the Hat. Two of them (a boy and a girl) are his children, while 26 of them are named "Little Cat [Letter]" after the letters of the alphabet and live under the hats of the previous one (like Little Cat Z lives under Little Cat Y's hat and so on.)
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* AccessoryWearingCartoonAnimal: They all wear hats.
* AmbiguouslyAbsentParent: The mother of the Cat in the Hat's children is never alluded to.
* AnimalsNotToScale: Little Cat A is cat-sized, but all the other alphabet cats are smaller than regular cats, and the Cat in the Hat's children are the size of human children.
* FunnyAnimal: All anthropomorphic cats.
* MsImagination: In the story "The Glunk Who Got Thunk", the Cat in the Hat's daughter thinks up very unusual creatures. Trouble is, whatever she imagines comes to life...
* UnusualPetsForUnusualPeople: In Little Cat Z's head, he keeps a weird creature named Voom. Considering Little Cat Z is an anthropomorphic cat who is too small to see, he's certainly an unusual person.
[[/folder]]

[[folder: Marco]]
The boy from ''McElliot's Pool'', ''And to Think That I Saw it on Mulberry Street'', and ''Marco Arrives Late''.
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* MrImagination: He likes thinking up very creative lies, like he was late for school because a bird laid an egg on his head and he was waiting for it to hatch, or he saw a parade on Mulberry Street.
[[/folder]]

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