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* YouGotSpunk: Luna actually likes Dexter's contrary nature... but at the same time warns him not to underestimate her.

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* YouGotSpunk: YouGotGuts: Luna actually likes Dexter's contrary nature... but at the same time warns him not to underestimate her.
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* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].

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* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].machine]].
* YouGotSpunk: Luna actually likes Dexter's contrary nature... but at the same time warns him not to underestimate her.
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* PragmaticVillainy: [[spoiler: The changelings don't go after the Elements of Harmony because they would lose their only defense against dangers like Sombra and Discord]].
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** Twilight

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** Twilight Dexter, when observes the sun revolves around Equestria. He starts banging his head against a monitor, until Quadraplex restrains him.
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* MamaBear: Quadraplex, the AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator, to Dexter's horror. When Dexter tries to [[spoiler: detonate his ion blaster to prevent Princess Luna tracking him down]], she captures Dexter himself to try and force him to agree to be more careful about himself.

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* MamaBear: Quadraplex, the AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator, to Dexter's horror. When Dexter tries to [[spoiler: detonate his ion blaster to prevent Princess Luna tracking him down]], she captures Dexter himself to try and force him to agree to be more careful about himself. She later restrains him and injects him with an anti-psychotic drug after he goes into a fit when he realizes that Equestria's sun doesn't work like Earth's.

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** Holo!Dexter invokes this, deliberately channelling the personality of [[Series/{{Dexter}} a certain other Dexter]] to help intimidate a captive changeling.

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** Holo!Dexter invokes this, deliberately channelling the personality of [[Series/{{Dexter}} a certain other Dexter]] to help intimidate [[spoiler: a captive changeling.changeling]].



* SanitySlippage: Twilight, after Dexter's solved Clover's Conundrum. She spends ''nine hours'' examining it, sending letters to and from an important professor, and teleporting about the library. She calms down after Rarity dumps buckets of water on her head... only to see Rarity accidentally erased the blackboard in the process. Then she remembers that Dexter was the one who wrote it, and waits for him anxiously at Pinkie's surprise party

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* SanitySlippage: SanitySlippage:
**
Twilight, after Dexter's solved Clover's Conundrum. She spends ''nine hours'' examining it, sending letters to and from an important professor, and teleporting about the library. She calms down after Rarity dumps buckets of water on her head... only to see Rarity accidentally erased the blackboard in the process. Then she remembers that Dexter was the one who wrote it, and waits for him anxiously at Pinkie's surprise partyparty. And the morning after the changeling attack, Twilight slips back into her manic phase when asking about the Conundrum.
** Twilight

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* AchievementsInIgnorance:
** Despite not knowing anything about magic -- or even believing it ''exists'' at the time -- Dexter manages to complete a famously unsolved mathemagical equation called "Clover's Conundrum".
** Even as he completely disbelieves that Celestia and Luna are solar body-manipulating immortals, Dexter inadvertently proves by scientific reasoning that Luna must be the magically/physically ''stronger'' of the sisters, since she controls both the moon and the stars. Much to Luna's pleasure, implying that this is actually ''true''.



* AmusingInjuries: Dexter's torment at the hands of Dee Dee come across as funny to the observer. To the ponies, who here about it from Dexter, [[OhCrap not so much]].

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** After finding out that Equestria really is a geocentric system, Dexter suffers a mild psychotic break and temporarily starts insisting he's in a dream again.
* AlternativeCharacterInterpretation: InUniverse. Ponies who hear about her think Dee Dee is a psychopath. Dexter is adamant that she's not evil, just an '''idiot'''.
* AmusingInjuries: Dexter's torment at the hands of Dee Dee come across as funny to the observer. To the ponies, who here hear about it from Dexter, [[OhCrap not so much]].



* CoolAndUnusualPunishment: Rarity inflicts this upon Dexter for playing a role in blowing up Carousel Boutique: Make him wear one of the hats he destroyed, and then introducing him to [[GenkiGirl Pinkie]] [[NoSenseOfPersonalSpace Pie]].
** After he inadvertently uses the word "procreation" in front of the Cutie Mark Crusaders, she instructs them to catch him and play dress-up by phrasing it in terms of getting their Cutie Marks.
* DomesticAbuse: Applejack, at the least, has suspicions that this is what Dexter's homelife involves, since his parents show no signs of coming to get him[[note]]she doesn't know they're on the wrong side of a wormhole[[/note]] and, to her blatant horror, her status as the [[LivingLieDetector Element of Honesty]] means she knows every word Dexter says about what his sister has done to him is true.

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* CoolAndUnusualPunishment: CoolAndUnusualPunishment:
**
Rarity inflicts this upon Dexter for playing a role in blowing up Carousel Boutique: Make him wear one of the hats he destroyed, and then introducing him to [[GenkiGirl Pinkie]] [[NoSenseOfPersonalSpace Pie]].
** After he inadvertently uses the word "procreation" in front of the Cutie Mark Crusaders, she Rarity then instructs them to catch him and play dress-up by phrasing it in terms of getting their Cutie Marks.
* CreepyChild:
** Holo!Dexter invokes this, deliberately channelling the personality of [[Series/{{Dexter}} a certain other Dexter]] to help intimidate a captive changeling.
** Dexter does this to frighten Twilight Sparkle when she tries to make him solve Clover's Conundrum again.
* DomesticAbuse: Applejack, at the least, has suspicions that this is what Dexter's homelife involves, since his parents show no signs of coming to get him[[note]]she doesn't know they're on the wrong side of a wormhole[[/note]] and, to her blatant horror, her status as the [[LivingLieDetector Element of Honesty]] means she knows every word Dexter says about what his sister has done to him is true. In chapter 10, she confronts Dexter about what his sister has done to him, and notes that child support services would probably not let him go home if they believed his sister would go back to abusing him that way.



* FlatEarthAtheist: Dexter has the uncomfortable position of being a rationalistic skeptic in a world that genuinely does run on magical principles. Much to his discomfort as he keeps finding out that his "rational" assumptions are wrong and, yes, the ponies are telling the truth. His sheer level of skepticism arguably pushes him close to HollywoodAtheism, but he does make painstaking rational arguments. For example, even after being forcibly confronted with the fact that Equestria is a geocentric[[note]]sun and moon orbit the planet, rather than planet orbiting the sun[[/note]] world, he refuses to believe that the Princesses are responsible... because how could life have ever evolved over billions of years if two individuals have to physically control the sun and moon? He's still ''wrong'' in his assumptions, but his reasons for being skeptical are rational. He's just insisting on applying real-world scientific fact to a world that runs on magic.
** To put this in perspective, Dexter tells Luna ''to her '''face''''' that he doesn't believe she manipulates the sun and moon, or even that she ever became Nightmare Moon.



* GoodCopBadCop:
** Dexter ends up doing this with his hologrammatic double after he finds Quadraplex's behavior to be too intense to handle.
** Dexter invokes and discusses this with Luna as part of his attempts to disprove the "propaganda" of the Alicorn Sisters controlling the orbits of the sun and moon.
* GRatedDrug: After Dexter has a breakdown over finding out Equestria genuinely is a geocentric system, Quadriplex tries to calm him down by giving him a dose of a type two neuroleptic compound created from a plant Dexter discovered bordering the Everfree. The result is an intensely euphoric sensation... or, in layman's terms, Dexter is temporarily ''stoned out of his mind''.



* MamaBear: Quadraplex, The AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator, to Dexter's horror. When Dexter tries to [[spoiler: detonate his ion blaster to prevent Princess Luna tracking him down]], she captures Dexter himself to try and force him to agree to be more careful about himself.

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* MamaBear: Quadraplex, The the AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator, to Dexter's horror. When Dexter tries to [[spoiler: detonate his ion blaster to prevent Princess Luna tracking him down]], she captures Dexter himself to try and force him to agree to be more careful about himself.



* MythologyGag: Before rooming with the Apple family, Dexter suspiciously asks about their opinions on science, indirectly referencing an episode where he was sent to an extremely primitive farming community and almost wound up being ''burnt at the stake'' for creating a potato-powered lightbulb. He references a lot of his experiences in order to explain his actions.

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* MythologyGag: MythologyGag:
**
Before rooming with the Apple family, Dexter suspiciously asks about their opinions on science, indirectly referencing an episode where he was sent to an extremely primitive farming community and almost wound up being ''burnt at the stake'' for creating a potato-powered lightbulb. He lightbulb.
** In fact, Dexter
references a lot of his experiences in order to explain his actions.actions.
* NotNowKiddo:
** Dexter routinely receives this treatment, as it's obvious to the natives that this "silly little foal" has absolutely no idea what he's talking about, due to his ignorance of the way their world works and stubborn refusal to accept what he's simply told about.
** Spike is reduced to yelling at the top of his voice to keep the ponies from shushing him and keeping him from telling them what he saw during the fight in the bakery.



* PoorCommunicationKills: Lampshaded. Dexter at one point mentions that the biggest reason he's evaded questioning and eventual discovery is because Luna, Twilight and Applejack aren't communicating with each other more, and thus allowing them to piece together vital information.



* TooDumbToLive: Dexter's opinion of Dee Dee, and he assures his pony audience that Dee Dee's affronts to him are caused by sheer idiocy, rather than any actual deliberate malice.

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* TooDumbToLive: TooDumbToLive:
**
Dexter's opinion of Dee Dee, and he assures his pony audience that Dee Dee's affronts to him are caused by sheer idiocy, rather than any actual deliberate malice.malice.
** Spike saw the ion cannon in action, yet the first thing he does after picking it up is pull the trigger. Fortunately it wasn't aimed at anyone so there were no casualties.
* VerbalBackspace: Spike does one quick-smart after realising he's just insulted Rarity's weight.

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* AmusingInjuries: Dexter's torment at the hands of Dee Dee come across as funny to the observer. To the ponies, who here about it from Dexter, [[OhCrap not so much]].



* MythologyGag: Before rooming with the Apple family, Dexter suspiciously asks about their opinions on science, indirectly referencing an episode where he was sent to an extremely primitive farming community and almost wound up being ''burnt at the stake'' for creating a potato-powered lightbulb.

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* MythologyGag: Before rooming with the Apple family, Dexter suspiciously asks about their opinions on science, indirectly referencing an episode where he was sent to an extremely primitive farming community and almost wound up being ''burnt at the stake'' for creating a potato-powered lightbulb. He references a lot of his experiences in order to explain his actions.
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* MamaBear: Quadraplex, The AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator. When Dexter tries to [[spoiler: detonate his ion blaster to prevent Princess Luna tracking him down]], she captures Dexter himself to try and force him to agree to be more careful about himself.

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* MamaBear: Quadraplex, The AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator.creator, to Dexter's horror. When Dexter tries to [[spoiler: detonate his ion blaster to prevent Princess Luna tracking him down]], she captures Dexter himself to try and force him to agree to be more careful about himself.

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* LaserGuidedKarma: Literally. When Diamond Tiara mocks Dexter, he builds a laser pen that [[BullyHunter sets her crown on fire]]. (Dexter just wanted to ruin the finish, and was mistaken with the true material makeup of the crown).

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* LaserGuidedKarma: Literally. When Diamond Tiara mocks Dexter, he builds a laser pen that [[BullyHunter sets her crown on fire]]. (Dexter Ironically, this was an accident rather than DisproportionateRetribution; Dexter just wanted to ruin the finish, and he didn't realise that the crown was mistaken with the true material makeup of the crown).actually a fake.



* MagicVersusScience: Zigzagged. Dexter initially doesn't believe in magic and is skeptical of it. Although he comes to accept after interacting with ponies that magic is real, he still remains skeptical about many of the claims that the ponies casually make, such as the abilities of the princesses or the pegasus ability to manually manipulate the weather. Dexter also hates the philosophy of [[AWizardDidIt "it's magic, it just works that way"]]. Despite that, he finds the subject interesting and immediately starts trying to study it himself. The two forces are clearly seperate, but can interactd in some ways -- Dexter is able to [[spoiler: teleport his ion blaster out from under spells that should have prevented any teleporting spell from working]] and build magic dampening systems.

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* MagicVersusScience: Zigzagged. Dexter initially doesn't believe in magic and is skeptical of it. Although he comes to accept after interacting with ponies that magic is real, he still remains skeptical about many of the claims that the ponies casually make, such as the abilities of the princesses or the pegasus ability to manually manipulate the weather. Dexter also hates the philosophy of [[AWizardDidIt "it's magic, it just works that way"]]. Despite that, he finds the subject interesting and immediately starts trying to study it himself. The two forces are clearly seperate, separate, but can interactd interact in some ways -- Dexter is able to [[spoiler: teleport his ion blaster out from under spells that should have prevented any teleporting spell from working]] and build magic dampening systems.


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* MythologyGag: Before rooming with the Apple family, Dexter suspiciously asks about their opinions on science, indirectly referencing an episode where he was sent to an extremely primitive farming community and almost wound up being ''burnt at the stake'' for creating a potato-powered lightbulb.

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* ChekhovsGun:
** The diagnostic machine [[spoiler: is able to identify ponies as being Changelings. The machine makes Dexter a target of the Changelings, and a subject of interest among the Princesses]].
** Dexter's laser pen, which he built to torment Diamond Tiara, [[spoiler: helps him defeat a changeling that was a disguised as Cheerilee]].



* LaserGuidedKarma: Literally. When Diamond Tiara mocks Dexter, he builds a laser pen that sets her crown on fire. (Dexter just wanted to ruin the finish, and was mistaken with the true material makeup of the crown).

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* LaserGuidedKarma: Literally. When Diamond Tiara mocks Dexter, he builds a laser pen that [[BullyHunter sets her crown on fire.fire]]. (Dexter just wanted to ruin the finish, and was mistaken with the true material makeup of the crown).
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* GenreSavvy: After Dexter stole the blueprints to his diagnostic machine, Luna puts tracking devices on the more advanced items Dexter left behind, in case they are stolen by this super-fast colt.
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He did not recognize any of the stars, leading him to believe he\'s at the very least in another GALAXY.


** Dexter later gets one when he sees the Milky Way Galaxy, when his distance from home and his family sinks in.

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** Dexter later gets one when he sees fails to see the Milky Way Galaxy, when his distance from home and his family sinks in.in, as he would have to be at the very least in a different galaxy.
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* {{Expy}}: InUniverse, Dexter considers Pinkie Pie, with her [[NoSenseOfPersonalSpace extroverted]] and [[GenkiGirl excitable behavior]], to be one for [[AnnoyingYoungerSibling Dee Dee]]. This fills him with enormous amounts of grief.

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* {{Expy}}: InUniverse, Dexter considers Pinkie Pie, with her [[NoSenseOfPersonalSpace extroverted]] and [[GenkiGirl excitable behavior]], her pink color, and blue eyes, to be one for [[AnnoyingYoungerSibling Dee Dee]]. This fills him with enormous amounts of grief.grief, and he actually calls her Dee Dee on instinct
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* PhysicalGod: Implied in regards to the alicorns. Most notably, Princess Luna is capable of actually perceiving and attempting to interact with Dexter when he is moving at 64 times normal speed (although he's still fast enough she can't make out his precise features or quite catch him) and effortlessly shrugs off warding spells she warned would lead most ordinary people in a coma for a month at best.
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* MagicVersusScience: Zigzagged. Dexter initially doesn't believe in magic and is skeptical of it. Although he comes to accept after interacting with ponies that magic is real, he still remains skeptical about many of the claims that the ponies casually make, such as the abilities of the princesses or the pegasus ability to manually manipulate the weather. Dexter also hates the philosophy of [[AWizardDidIt "it's magic, it just works that way"]]. Despite that, he finds the subject interesting and immediately starts trying to study it himself. The two forces are clearly seperate, but can interactd in some ways -- Dexter is able to [[spoiler: teleport his ion blaster out from under spells that should have prevented any teleporting spell from working]] and build magic dampening systems.

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* ArsonMurderAndJaywalking: Dexter comments in chapter 9 that Dee Dee's list of offenses against him include beating him up, setting him on fire, exposing him to toxic fumes, throwing him off of high places, destroying his possessions, zapping him with electricity, stealing his lunch money, intentionally exposing him to germs, detonating a bomb in his bedroom whilst he was sleeping, and causing him to get an A- mark in school.



* {{Expy}}: In-universe, Dexter considers Pinkie Pie, with her [[NoSenseOfPersonalSpace extroverted]] and [[GenkiGirl excitable behavior]], to be one for [[AnnoyingYoungerSibling Dee Dee]]. This fills him with enormous amounts of grief.

to:

** After he inadvertently uses the word "procreation" in front of the Cutie Mark Crusaders, she instructs them to catch him and play dress-up by phrasing it in terms of getting their Cutie Marks.
* DomesticAbuse: Applejack, at the least, has suspicions that this is what Dexter's homelife involves, since his parents show no signs of coming to get him[[note]]she doesn't know they're on the wrong side of a wormhole[[/note]] and, to her blatant horror, her status as the [[LivingLieDetector Element of Honesty]] means she knows every word Dexter says about what his sister has done to him is true.
* {{Expy}}: In-universe, InUniverse, Dexter considers Pinkie Pie, with her [[NoSenseOfPersonalSpace extroverted]] and [[GenkiGirl excitable behavior]], to be one for [[AnnoyingYoungerSibling Dee Dee]]. This fills him with enormous amounts of grief.grief.
* FantasticRacism: Tribalism is apparently a very real and serious problem in Equestria. In chapter 9, Pinkie Pie mentions that unicorns have pretty much dominated all scientific fields for decades and so nobody really believes/trusts in scientific proofs established by non-unicorns. This is why she knows pi to over 50000 digits, as a result of studying old earth pony scholars, when Twilight mentions that unicorns have only been able to calculate the first 400 digits of pi. Dexter finds this fact to be absurd.



* GeniusDitz: Pinkie Pie. She is able to calculate the last 9 of ''50001'' digits of pie, can calculate the amount of time between when she felt her Pinkie Sense and when she met Dexter, and can interpret Dexter's [[SesquipedalianLoquaciousness complex language]] to realize he insulted her.

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* GeniusDitz: Pinkie Pie. She is able to calculate the last 9 of ''50001'' digits of pie, pi, can calculate the amount of time between when she felt her Pinkie Sense and when she met Dexter, and can interpret Dexter's [[SesquipedalianLoquaciousness complex language]] to realize he insulted her.



** JerkWithAHeartOfGold: Underneath is angry exterior, he does deeply miss his family, even Dee Dee, and breaks down crying when he realizes they are literally a galaxy away. He also [[spoiler: risks exposing his scientific genius to give a letter to the Royal Guard so they can rescue Cheerilee after she is captured by the Changelings]].

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** JerkWithAHeartOfGold: Underneath is his angry exterior, he has quite a few redeeming features. He does deeply miss his family, even Dee Dee, and breaks down crying when he realizes they are literally a galaxy away. He also [[spoiler: risks exposing his scientific genius to give a letter to the Royal Guard so they can rescue Cheerilee after she is captured by the Changelings]]. He is adamant about stopping his computer from [[spoiler: torturing a captive changeling]], and after her interrogation is finished, he's so disturbed by her intensity he orders her to perform a diagnostic exam on her ethical programming. It's implied he wants to keep the ponies of Equestria from hurting themselves with his technology because he'd feel guilty if that happened. In chapter 9, he chews his computer out for not taking the potential presence of infants into account when he has to sedate a building full of ponies. When he inadvertently convinces some ponies that his sister is a psychopath, he spends an hour trying to convince them that isn't the case and she's not malicious at all, merely a moron.



* MamaBear: Quadraplex, The AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator.

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* MamaBear: Quadraplex, The AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator. When Dexter tries to [[spoiler: detonate his ion blaster to prevent Princess Luna tracking him down]], she captures Dexter himself to try and force him to agree to be more careful about himself.



* MistakenForRacist: Dexter is accused of being prejudiced when he calls unicorn language and magic stupid. He merely disbelieves the latter, and finds the former to be dumb.

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* MistakenForRacist: Dexter is accused of being prejudiced when he calls unicorn language and magic stupid. He merely disbelieves the latter, and finds the former to be dumb. Soon after, he gets a dressing down from Twilight and Applejack over more inadvertently tribalist dialogue.
* PetTheDog: In chapter 9, Dexter realises that Pinkie Pie does not share Dee Dee's sheer aggravating stupidity and makes a sincere effort at apologising to her for the way he's treated her.



* SkewedPriorities: After reciting the litany of offenses that Dee Dee has made against him, Dexter initially believes that their horror comes from her causing him to get a less than ultra-perfect grade. In his defense, his next assumption is that it's the "blew him up with a bomb" thing... whereupon he assures them that the bomb had no shrapnel, so he was just slammed into a wall instead of being perforated or blown to bits.



* TheWorldIsNotReady: One of the reason's Dexter hides his genius is because he feels the ponies are too backward to use it properly.

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* TheWorldIsNotReady: One of the reason's reasons Dexter hides his genius is because he feels the ponies are too backward to use it properly.properly.
* TooDumbToLive: Dexter's opinion of Dee Dee, and he assures his pony audience that Dee Dee's affronts to him are caused by sheer idiocy, rather than any actual deliberate malice.

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[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/9abedca2e439170c816bd9f4649601e1.png]]


''Dexter's Lab: Equestria'' is a {{Crossover}} {{Fanfic}} between ''WesternAnimation/DextersLaboratory'' and ''WesternAnimation/MyLittlePonyFriendshipIsMagic''. It was written by [[http://www.fimfiction.net/user/RenegadeAlias Renegade Alias]] and can be found [[http://www.fimfiction.net/story/189736/dexters-lab-equestria here]].



Dexter's Lab: Equestria was written by [[http://www.fimfiction.net/user/RenegadeAlias Renegade Alias]] and can be found [[http://www.fimfiction.net/story/189736/dexters-lab-equestria here]].

!! Tropes Are:

to:

Dexter's Lab: Equestria was written by [[http://www.fimfiction.net/user/RenegadeAlias Renegade Alias]] and can be found [[http://www.fimfiction.net/story/189736/dexters-lab-equestria here]].


!! Tropes Are:Tropes:
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* StuffBlowingUp: Dexter decides to perform a chemistry experiment with the CMC, and end up destroying Carousel Boutique. Rarity is [[{{Understatement}} not amused]]. And Twilight will not let Dexter anywhere near her lab.

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* CoolAndUnusualPunishment: Rarity inflicts this upon Dexter for playing a role in blowing up Carousel Boutique: Make him wear one of the hats he destroyed, and then introducing him to [[GenkiGirl Pinkie]] [[NoSenseOfPersonalSpace Pie]].



* {{Jerkass}}: Dexter is as antisocial and egotistical as per canon, but it really stands out among the residents of Ponyville. Highlights include insulting Equestrian history, and calling Pinkie Pie stupid.

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* {{Jerkass}}: Dexter is as antisocial and egotistical as per canon, but it really stands out among the residents of Ponyville.[[SugarBowl Ponyville]]. Highlights include insulting Equestrian history, and calling Pinkie Pie stupid.



* LivingLieDetector: Applejack, being an Element of Harmony, is able to detect lies, which makes it difficult for Dexter to hide his scientific brilliance. [[spoiler: Even more so are Changelings, based off their ability to sense emotional responses. The changeling posing as Cheerilee not only knows Dexter is lying about the machine, but is able to determine based of his biological response to her presence, that he not a pony]].

to:

* LaserGuidedKarma: Literally. When Diamond Tiara mocks Dexter, he builds a laser pen that sets her crown on fire. (Dexter just wanted to ruin the finish, and was mistaken with the true material makeup of the crown).
** Dexter too undergoes this when he acts too much like a jerk.
* LivingLieDetector: Applejack, being an Element of Harmony, is able to detect lies, which makes it difficult for Dexter to hide his scientific brilliance.brilliance and forcing him to speak in a way that makes him [[MetaphoricallyTrue technically]] correct. [[spoiler: Even more so are Changelings, based off their ability to sense emotional responses. The changeling posing as Cheerilee not only knows Dexter is lying about the machine, but is able to determine based of his biological response to her presence, that he not a pony]].



* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].
* TheVoiceless: Twilight renders Rarity this in her zeal to analyze Dexter's answer to Clover's Conundrum after Rarity tried to calm her down. Rarity splashes cold water all over the place.

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* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].
* TheVoiceless: Twilight renders Rarity this in her zeal to analyze Dexter's answer to Clover's Conundrum after Rarity tried to calm her down. Rarity splashes cold water all over the place.place.
* TheWorldIsNotReady: One of the reason's Dexter hides his genius is because he feels the ponies are too backward to use it properly.
* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].

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* ChildProdigy: Dexter. Even without revealing the full extent of his scientific abilities, his interest in science rivals that of ''Twilight'', and is able to solve an Equestrian concept that has baffled even the greatest minds in Equestrian mathematics.

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* ChildProdigy: Dexter. Even without revealing the full extent of his scientific abilities, his interest in science rivals that of ''Twilight'', and is able to solve an Equestrian concept called "Clover's Conundrum" that has baffled even the greatest minds in Equestrian mathematics.



* SanitySlippage: Twilight, after Dexter's solved Clover's Conundrum. She spends ''nine hours'' examining it, sending letters to and from an important professor, and teleporting about the library. She calms down after Rarity dumps buckets of water on her head... only to see Rarity accidentally erased the blackboard in the process. Then she remembers that Dexter was the one who wrote it, and waits for him anxiously at Pinkie's surprise party



* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].

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* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].machine]].
* TheVoiceless: Twilight renders Rarity this in her zeal to analyze Dexter's answer to Clover's Conundrum after Rarity tried to calm her down. Rarity splashes cold water all over the place.

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* ChildProdigy: Dexter. Even without revealing his scientific abilities, his interest in science rivals that of ''Twilight'', and is able to solve an Equestrian concept that has baffled even the greatest minds in Equestrian mathematics.

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* ChildProdigy: Dexter. Even without revealing the full extent of his scientific abilities, his interest in science rivals that of ''Twilight'', and is able to solve an Equestrian concept that has baffled even the greatest minds in Equestrian mathematics.



* LivingLieDetector: Applejack, being an Element of Harmony, which makes it difficult for Dexter to hide his scientific brilliance. [[spoiler: Even more so are Changelings, based off their ability to understand emotional responses. The changeling posing as Cheerilee not only knows Dexter is lying about the machine, but is able to determine based of his biological response to her presence, that he not a pony]].
* SpannerInTheWorks: Dexter builds a diagnostic machine that [[spoiler: detects a changeling in Ponyville's hospital, uncovering a Changeling plot to infiltrate all levels of Equestrian society]].

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* InsufferableGenius[=/=]KnowNothingKnowItAll: Dexter comes across as this with his dismissal of things that Equestria regards as common knowledge. Cheerilee ''does'' recognize his brilliance at math and science, but by academic standards recognize him as fairly average, considering his lack of basic magical and historical expertise. This annoys Dexter to no end.
* LivingLieDetector: Applejack, being an Element of Harmony, is able to detect lies, which makes it difficult for Dexter to hide his scientific brilliance. [[spoiler: Even more so are Changelings, based off their ability to understand sense emotional responses. The changeling posing as Cheerilee not only knows Dexter is lying about the machine, but is able to determine based of his biological response to her presence, that he not a pony]].
* MamaBear: Quadraplex, The AI Dexter built, had no qualms about [[spoiler: torturing the changeling]] that tried to hurt her creator.
** Luna herself is ''furious'' when [[spoiler: she learns Cheerilee was kidnapped by a Changeling, meaning they are targeting foals]].
* MistakenForRacist: Dexter is accused of being prejudiced when he calls unicorn language and magic stupid. He merely disbelieves the latter, and finds the former to be dumb.
* SpannerInTheWorks: Dexter builds a diagnostic machine that [[spoiler: detects a changeling in Ponyville's hospital, and he ends up uncovering a Changeling plot to infiltrate all levels of Equestrian society]].society]].
* StupidestThingIveEverHeard: Dexter's response to the whole Canterlot Wedding story, [[InsufferableGenius actually to a lot of things]] [[spoiler: until a changeling itself targets him over his diagnostic machine]].
* WouldHurtAChild: [[spoiler: The changeling posing as Cheerilee was willing to hurt Dexter to find out what he knew about the diagnostic machine]].
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* HeroicBSOD: Pinkie gets one when Dexter insults her. It lasts like... five seconds, before her hopes for Dexter being her friend are rekindled.
** Dexter later gets one when he sees the Milky Way Galaxy, when his distance from home and his family sinks in.

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* AllJustADream: Dexter, when he first arrives in Equestria, believes he is just dreaming or simply hallucinating. He eventually jerry-rigs a diagnostic machine just to prove he is hallucinating. [[HilarityEnsues It calls him dense]].



* GadgeteerGenius: Dexter, as in canon. In a technologically backward society, is a able to build a complex diagnostic machine decades ahead of anything Equestria's ever built, a laser pen, and using salvaged parts from a junkyard, is able to construct a lab, complete with an AI computer. But like canon, he hides it from the ponies around him.

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* GadgeteerGenius: Dexter, as in canon. In a technologically backward society, society like Equestria, he is a able to build a complex diagnostic machine decades ahead of anything Equestria's ever built, a laser pen, and using salvaged parts from a junkyard, is able to construct a lab, complete with an AI computer. But like canon, he hides it from the ponies those around him.
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* GadgeteerGenius: Dexter, as in canon. In a technologically backward society, is a able to build a complex diagnostic machine decades ahead of anything Equestria's ever built, a laser pen, and using salvaged parts from a junkyard, is able to construct a lab, complete with an AI computer. But like canon, he hides it from the ponies around him.

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* SpannerInTheWorks: Dexter's diagnostic machine

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* LivingLieDetector: Applejack, being an Element of Harmony, which makes it difficult for Dexter to hide his scientific brilliance. [[spoiler: Even more so are Changelings, based off their ability to understand emotional responses. The changeling posing as Cheerilee not only knows Dexter is lying about the machine, but is able to determine based of his biological response to her presence, that he not a pony]].
* SpannerInTheWorks: Dexter's Dexter builds a diagnostic machinemachine that [[spoiler: detects a changeling in Ponyville's hospital, uncovering a Changeling plot to infiltrate all levels of Equestrian society]].
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** JerkWithAHeartAGold: Underneath is angry exterior, he does deeply miss his family, even Dee Dee, and breaks down crying when he realizes they are literally a galaxy away. He also [[spoiler: risks exposing his scientific genius to give a letter to the Royal Guard so they can rescue Cheerilee after she is captured by the Changelings]].

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** JerkWithAHeartAGold: JerkWithAHeartOfGold: Underneath is angry exterior, he does deeply miss his family, even Dee Dee, and breaks down crying when he realizes they are literally a galaxy away. He also [[spoiler: risks exposing his scientific genius to give a letter to the Royal Guard so they can rescue Cheerilee after she is captured by the Changelings]].
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Dexter is a boy super-genius with a disdain for anything girlish and no desire for friendship. After an mishap in his lab, he get stuck in Equestria. How will he cope with the over-friendly ponies, and the girlish everything?

Dexter's Lab: Equestria was written by [[http://www.fimfiction.net/user/RenegadeAlias Renegade Alias]] and can be found [[http://www.fimfiction.net/story/189736/dexters-lab-equestria here]].

!! Tropes Are:
* BadassBookworm: Dexter, who puts his skills to use against [[spoiler: the Changelings]].
* ChildProdigy: Dexter. Even without revealing his scientific abilities, his interest in science rivals that of ''Twilight'', and is able to solve an Equestrian concept that has baffled even the greatest minds in Equestrian mathematics.
* {{Expy}}: In-universe, Dexter considers Pinkie Pie, with her [[NoSenseOfPersonalSpace extroverted]] and [[GenkiGirl excitable behavior]], to be one for [[AnnoyingYoungerSibling Dee Dee]]. This fills him with enormous amounts of grief.
* GeniusDitz: Pinkie Pie. She is able to calculate the last 9 of ''50001'' digits of pie, can calculate the amount of time between when she felt her Pinkie Sense and when she met Dexter, and can interpret Dexter's [[SesquipedalianLoquaciousness complex language]] to realize he insulted her.
* {{Jerkass}}: Dexter is as antisocial and egotistical as per canon, but it really stands out among the residents of Ponyville. Highlights include insulting Equestrian history, and calling Pinkie Pie stupid.
** JerkWithAHeartAGold: Underneath is angry exterior, he does deeply miss his family, even Dee Dee, and breaks down crying when he realizes they are literally a galaxy away. He also [[spoiler: risks exposing his scientific genius to give a letter to the Royal Guard so they can rescue Cheerilee after she is captured by the Changelings]].
* SpannerInTheWorks: Dexter's diagnostic machine

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