History Main / AccentsArentHereditary

* ''WesternAnimation/FamilyGuy'''s Peter and Lois Griffin both speak with thick, Rhode Island accents, but none of their children do: Meg and Chris sound like they're from [[ValleyGirl Southern]] [[SurferDude California]] while Stewie sounds like he's from [[EvilBrit Westminster]]. Even when he finally outs himself as a FakeBrit, the trope still applies, as his accent is no different from his siblings.

* In ''WesternAnimation/{{Animaniacs}}'', Wakko Warner has an English accent (Liverpool) while his siblings have General American accents.

* ''WesternAnimation/FamilyGuy'''s Peter and Lois Griffin both speak with thick, Rhode Island accents, but none of their children do: the eldest use regular American accents, and the youngest is, of all things, an EvilBrit. Even when he finally outs himself as a FakeBrit, the trope still applies, as his accent is no different from his siblings.

* In ''Series/Shadowhunters'', character Izzy is played by actress Emeraude Toubia, who is the daughter of a Mexican mother and a Lebanese-American father. Because of this, the character speaks with a very noticeable accent not shared by any other members of her on-screen family.

* ''WesternAnimation/HowToTrainYourDragon'': The parental generation of Vikings all have Scottish accents[[note]]which would be weird by itself were they not in the area of the genuinely Viking-populated Scottish Hebrides[[/note]], but their children (including the protagonist) all have American accents.

* Webby of ''WesternAnimation/DuckTales2017'' speaks with an American accent, but was raised by her British grandmother in the mansion of a Scottish trillionaire and has admitted that she never heard an American accent until she was seven.

A sub-trope of UnexplainedAccent.

* Star in ''WesternAnimation/StarVsTheForcesOfEvil'' has a general American accent, even though [[AliensOfLondon her parents]] both speak with English accents.

* In ''Series/StarTrekTheNextGeneration'', Deanna Troi has a heavy Eastern-European accent. Her mother has a more American accent.

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* ''WebVideo/TheOatsSeries'': Older Pig speaks with an American accent while Younger Pig (and just about everyone else they know) speaks with a British accent.

* ''Series/{{Roseanne}}'': The titular character and her husband Dan speak have a southern accent, but this doesn't apply to their three children.

* Numbuh One and his dad from ''WesternAnimation/CodenameKidsNextDoor'' have British accents, but his grandfather and uncle have American accents.
* Webby of ''WesternAnimation/DuckTales2017'' speaks with an American accent, but was raised by her British grandmother in the mansion of a Scottish trillionaire and has admitted that she never heard an American accent until she was seven.

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* Children on the autistic spectrum sometimes speak with foreign accents.

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* ''WesternAnimation/HowToTrainYourDragon'': The parental generation of Vikings all have Scottish accents[[note]]which would be weird by itself were they not in the area of the genuinely Viking-populated Scottish Hebrides[[/note]], but their children (including the protagonist) all have North American accents.

* Sheldon Cooper from ''Series/TheBigBangTheory'' affects an East-Atlantic accent despite being from Texas, while the rest of his family have Texan drawls (although he does slip from time to time). This extends to the spin-off ''Series/YoungSheldon'', where he's nine years old. Narration from the pilot episode of that series explains that he chose to change his accent to sound smarter.

* Webby of ''WesternAnimation/DuckTales2017'' was raised by a British grandmother in the mansion of a Scottish trillionaire, and has admitted that she never heard an American accent until she was seven. Despite all this, her normal accent is American.

* In ''Film/ChittyChittyBangBang'' Caracatus' father and children have English accents, but he has an American one. Of course this is because Dick Van Dyke's attempt at an English accent in Mary Poppins failed to go over well and they didn't want to repeat it, but it does raise questions.

* ''WesternAnimation/VoltronLegendaryDefender'': In a flashback, Keith's father is seen. He speaks with a heavy southern accent, but his son doesn't have one. This spawned the theory that Keith is Texan, and since his father has [[NoNameGiven yet to receive an official name]], gave him the FanNickname "Texas Kogane".

* In an odd twist, the titular character of ''Film/KingArthurLegendOfTheSword'' has a curious dialectal affectation that stands out compared to the rest of his [[FamilyOfChoice found family]] despite living in Londinium all his life due to [[Creator/CharlieHunnam Charlie Hunnam's]] natural accent becoming muddled after extensive dialect training for American roles.