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** The EvilDoppelganger lookalike of Twilight Sparkle in "The Mean 6" gives a very creepy one when she is overpowering Chrysalis. The Fluttershy clone also has a good one when insulting the forest animals, as does Rarity's clone when hoarding from the real Applejack and Rainbow Dash.
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** [[TheDreaded Alastor]] has one of these [[PerpetualSmiler all the time]] because he sees smiling as a show of power and dominance, meaning anyone who frowns in his field of vision he will consider weak regardless of their objective strength. His NightmareFace makes it even more hellaciously creepy than it usually is.
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** [[TheDreaded [[Characters/HazbinHotelAlastor Alastor]] has one of these [[PerpetualSmiler all the time]] because he sees smiling as a show of power and dominance, meaning anyone who frowns in his field of vision he will consider weak regardless of their objective strength. His NightmareFace makes it even more hellaciously creepy than it usually is.
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Not enough context (ZCE); Missed that there was an example already, but it didn't explain how the trope applied, only claimed that it did.
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* [[BadPowersGoodPeople Raven]] from ''WesternAnimation/TeenTitans2003'' dons one of these in "Nevermore", when her emotions and power go out of control.
* In ''WesternAnimation/TeenTitans2003'', episode "Nevermore", Raven's inner demon surfaces against Doctor Light, and she shows a toothy and lopsided smile along with glowing eyes which promise nothing but pain and fear.
* In ''WesternAnimation/TeenTitans2003'', episode "Nevermore", Raven's inner demon surfaces against Doctor Light, and she shows a toothy and lopsided smile along with glowing eyes which promise nothing but pain and fear.
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Crosswicking
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* In ''WesternAnimation/TeenTitans2003'', episode "Nevermore", Raven's inner demon surfaces against Doctor Light, and she shows a toothy and lopsided smile along with glowing eyes which promise nothing but pain and fear.
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* ''WesternAnimation/HazbinHotel'': [[TheDreaded Alastor]] has one of these [[PerpetualSmiler all the time]] because he sees smiling as a show of power and dominance, meaning anyone who frowns in his field of vision he will consider weak regardless of their objective strength. His NightmareFace makes it even more hellaciously creepy than it usually is.
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* ''WesternAnimation/HazbinHotel'': ''WesternAnimation/HazbinHotel''
** [[TheDreaded Alastor]] has one of these [[PerpetualSmiler all the time]] because he sees smiling as a show of power and dominance, meaning anyone who frowns in his field of vision he will consider weak regardless of their objective strength. His NightmareFace makes it even more hellaciously creepy than it usuallyis.is.
** The inhabitants of Cannibal Town can actually be quite friendly and smile a lot... but it's still sharp-toothed cannibals smiling at you with all the teeth. Much as with Alastor, it would be hard to draw a line for when it's ''not'' a Slasher Smile.
** [[TheDreaded Alastor]] has one of these [[PerpetualSmiler all the time]] because he sees smiling as a show of power and dominance, meaning anyone who frowns in his field of vision he will consider weak regardless of their objective strength. His NightmareFace makes it even more hellaciously creepy than it usually
** The inhabitants of Cannibal Town can actually be quite friendly and smile a lot... but it's still sharp-toothed cannibals smiling at you with all the teeth. Much as with Alastor, it would be hard to draw a line for when it's ''not'' a Slasher Smile.
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** In "Waiting", [=SpongeBob=] mails in for a free prize for a box of Kelpo cereal. He waits for it at the mailbox for an impossibly long time because he wants to see the mailman deliver it. He finally gets it, and it turns out to be a toy. Patrick, his idiot starfish friend, "breaks" it (Squidward arrives later on and says it's ''supposed'' to do that). Spongebob just has a frozen smile on his face as he looks down at it. The smile stays on the entire following conversation:
-->'''[=SpongeBob=] & Patrick:''' It's beautiful. (Patrick touches it and its springs pop out)\\
-->'''[=SpongeBob=] & Patrick:''' It's beautiful. (Patrick touches it and its springs pop out)\\
to:
** In "Waiting", [=SpongeBob=] mails in for a free prize for a box of Kelpo cereal. He waits for it at the mailbox for an impossibly long time because he wants to see the mailman deliver it. He finally gets it, and it turns out to be a toy. Patrick, his idiot starfish friend, "breaks" it (Squidward arrives later on and says it's ''supposed'' to do that). Spongebob [=SpongeBob=] just has [[BrokenSmile a frozen smile on his face face]] as he looks down at it. The smile stays on the entire following conversation:
-->'''[=SpongeBob=] --->'''[=SpongeBob=] & Patrick:''' It's beautiful. (Patrick touches it and its springs pop out)\\
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'''[=SpongeBob=]:''' (face shifts to fury) YOU! YOU RUINED MY FREE TOY!!!
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'''[=SpongeBob=]:''' (face shifts to fury) YOU! [[YouExclamation YOU!]] YOU RUINED MY FREE TOY!!!
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* Minor ''WesternAnimation/{{Freakazoid}}'' character Emmitt Nervend is most notable for his large, mirthless rictus grin.
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** In "Waiting", [=SpongeBob=] mails in for a free prize for a box of Kelpo cereal. He waits for it at the mailbox for an impossibly long time. He finally gets it, and it turns out to be a toy. Patrick, his idiot starfish friend, "breaks" it (Squidward arrives later on and says it's ''supposed'' to do that). Spongebob just has a frozen smile on his face as he looks down at it. The smile stays on the entire following conversation:
to:
** In "Waiting", [=SpongeBob=] mails in for a free prize for a box of Kelpo cereal. He waits for it at the mailbox for an impossibly long time.time because he wants to see the mailman deliver it. He finally gets it, and it turns out to be a toy. Patrick, his idiot starfish friend, "breaks" it (Squidward arrives later on and says it's ''supposed'' to do that). Spongebob just has a frozen smile on his face as he looks down at it. The smile stays on the entire following conversation:
'''Patrick:''' [[ThisIsGonnaSuck [=SpongeBob=]?]]\\
'''[=SpongeBob=]:''' I waited so long...\\
'''[=SpongeBob=]:''' I waited so long...\\
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'''[=SpongeBob=]:''' I waited so long...\\
'''Patrick:''' [=SpongeBob=]?\\
'''Patrick:''' [=SpongeBob=]?\\
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'''[=SpongeBob=]:''' Yes, yes I'm okay.\\
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'''[=SpongeBob=]:''' [[TranquilFury Yes, yes I'm okay.\\]]\\
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* ''WesternAnimation/TheLegendOfVoxMachina:'' [[TheGunslinger Percy's]] get more and more frightening as his RoaringRampageOfRevenge goes on, beginning to resemble a JaggedMouth [[spoiler:much like that of Orthax, the demon [[DemonicPossession possessing him]]]].
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[[caption-width-right:350:A slasher using a gun? Blasphemy!]]
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%% Caption selected per above thread. Please don't change or remove without approval from here:
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Examples of SlasherSmile in western animation.
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%% https://tvtropes.org/pmwiki/posts.php?discussion=1404492079030138900
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Examples of SlasherSmile in western animation.
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[[quoteright:350:[[WesternAnimation/FinalSpace https://static.tvtropes.org/pmwiki/pub/images/slashersmileanimation.png]]
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[[quoteright:350:[[WesternAnimation/FinalSpace https://static.tvtropes.org/pmwiki/pub/images/slashersmileanimation.png]]png]]]]
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%% Image selected per Image Pickin' thread: https://tvtropes.org/pmwiki/posts.php?discussion=17011016260.14509200
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[[quoteright:350:[[WesternAnimation/FinalSpace https://static.tvtropes.org/pmwiki/pub/images/slashersmileanimation.png]]
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%% Image selected per Image Pickin' thread: https://tvtropes.org/pmwiki/posts.php?discussion=17011016260.14509200
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[[quoteright:350:[[WesternAnimation/FinalSpace https://static.tvtropes.org/pmwiki/pub/images/slashersmileanimation.png]]
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* ''WesternAnimation/LegionOfSuperheroes'': in the episode "Cry Wolf" Timber Wolf did this [[spoiler: showing us that he was [[BrainwashedAndCrazy under the nanite's influence]]]]
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* ''WesternAnimation/LegionOfSuperheroes'': ''WesternAnimation/LegionOfSuperHeroes2006'': in the episode "Cry Wolf" Timber Wolf did this [[spoiler: showing us that he was [[BrainwashedAndCrazy under the nanite's influence]]]]
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* ''WesternAnimation/HazbinHotel'': [[TheDreaded Alastor]] has one of these [[PerpetualSmiler all the time]] because he sees smiling as a show of power and dominance, meaning anyone who frowns in his field of vision he will consider weak regardless of their objective strength. His NightmareFace makes it even more hellaciously creepy than it usually is.
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Uncanny Valley is IUEO now and the subjective version has been split; cleaning up misuse and ZCE in the process
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* In ''WesternAnimation/GravityFalls'', "Bipper" (Bill Cipher while [[DemonicPossession possessing Dipper's body]] seems to be wearing one of these at almost [[http://animating-gravity.tumblr.com/post/97246312335/why-is-bipper-smiling-like-all-the-time all times]]. Considering he's a [[EldritchAbomination psychopathic dream demon]] bent on bringing about the end of the world who delights in causing Dipper's body insufferable torture while inside it, this seems rather appropriate, despite even how unnerving it is to see a character we know well look suddenly so malevolent. The artists even went as far as to slightly change the way his teeth and gums look in order to make it especially [[UncannyValley creepy]].
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* In ''WesternAnimation/GravityFalls'', "Bipper" (Bill Cipher while [[DemonicPossession possessing Dipper's body]] seems to be wearing one of these at almost [[http://animating-gravity.tumblr.com/post/97246312335/why-is-bipper-smiling-like-all-the-time all times]]. Considering he's a [[EldritchAbomination psychopathic dream demon]] bent on bringing about the end of the world who delights in causing Dipper's body insufferable torture while inside it, this seems rather appropriate, despite even how unnerving it is to see a character we know well look suddenly so malevolent. The artists even went as far as to slightly change the way his teeth and gums look in order to make it especially [[UncannyValley creepy]].creepy.
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* Many cartoon sharks grin at their victims as they sneak up from behind. For instance, the ''WesternAnimation/FindingNemo'' promotional posters featured a blood-crazed Bruce looming over Dory and Marlin.
** Possibly an example of TruthInTelevision, or, more accurately, Urban Legend In Television. In the past, some people believed that sharks grinned and winked as they moved in for the kill. In actual fact, sharks' jaws swing down and forward to allow them to bite, and a membrane moves to cover their eyes so that they don't get damaged in the assault. [[ThreateningShark The look certainly gives the appearance of a scary grin, which may go some way to explain why sharks are such demonised predators.]] It seems unlikely that anyone being attacked by a shark would care whether it looked like it was grinning or not.
** In a similar vein: [[Literature/MobyDick "I grin at thee, thou grinning whale."]]
* ''WesternAnimation/{{Amphibia}}'':
** [[NightmareFetishist Maddie]] has several moments where she sports an unsettling ear-to-ear grin which could haunt your nightmares, although she's actually a really chill person. One of the most notable instances is the grin she gives [[spoiler:Barry]] while cackling, which is ''not'' a case of her looking more creepy that she means to be, in "[[Recap/AmphibiaS3E20SashasAngels Sasha's Angels]]".
** [[BloodKnight General Yunan]] may be funny and silly, but when she intends to kill and her blood starts rushing, she looks like [[https://static.wikia.nocookie.net/amphibiapedia/images/a/ac/Toadcatcher_%28189%29.png/revision/latest/scale-to-width-down/1000?cb=20200806195026 this]].
** [[spoiler:Andrias]] smiles quite ''unsettlingly'' during and after the build-up to his reveal that he was EvilAllAlong, in "[[Recap/AmphibiaS2E36TrueColors True Colors]]".
** Though it's not quite a GlasgowGrin, the Cloak-bot grins ''a lot'', most notably when it's getting close to killing Anne and it lets out an unsettling laugh to go with it.
** [[spoiler:Darcy]] has quite a few intimidating grins while they possess a human body, including a truly ''psychotic'' ear-to-ear grin after they [[spoiler:cut off Grime's arm]].
* In ''WesternAnimation/AvatarTheLastAirbender'', Azula's iconic PsychoticSmirk [[SanitySlippage gradually morphs into one of these over the course of the last few episodes of the series.]]
** Her father, Fire Lord Ozai, also sports one in the finale when he's attempting to burn down the entire Earth Kingdom.
** [[CuteBruiser Toph]]'s first sign of emotion in the series after winning the Earth Rumble tournament is to [[https://c2.staticflickr.com/4/3660/3280963704_94fcb87cd3.jpg grin]] like the boss she is.
** Sokka has a [[http://static.fjcdn.com/pictures/Sokka_2d6392_841964.jpg truly epic one]], when he trying to sneak up on Aang [[TrainingMontage during training]] which has long since become meme-bait.
* The [[PsychoForHire Grim Reaper]] in ''WesternAnimation/TheAvengersEarthsMightiestHeroes'' flashes one of these whenever he's about to fight someone. (Or whenever he's beaten them.)
* Can you believe the titular duo from ''WesternAnimation/BeavisAndButthead'' can pull of one? Well, they ''both'' can and it's downright terrifying when they do. Just check out one [[https://i.pinimg.com/236x/68/68/3b/68683b8685ae317dd56ab3d2dadabeda--the-movie.jpg here]].
* [[EvilCounterpart Kevin 11]] did this ''very'' often in the original ''WesternAnimation/{{Ben 10}}''. He stopped doing this after [[HeelFaceTurn reforming]] in ''[[WesternAnimation/Ben10AlienForce Alien Force]]''... [[spoiler:Then starts doing it again in Season 1 of ''[[WesternAnimation/Ben10UltimateAlien Ultimate Alien]]'' after being turned insane again.]]
* The twin kittens in ''WesternAnimation/BestEd'' give these all the time, the only time they DROP their smile is at Buddy the Squirrel, who gives an OhCrap moment whenever they do.
* [[spoiler:William Dunbar]], of all people in '' WesternAnimation/CodeLyoko'' displays this while in Lyoko while [[spoiler:possessed by XANA after the ending of the third season.]] This is helped by the fact that he is given a {{BFS}} to use as a weapon while backed up by Monsters.
* ''WesternAnimation/CodenameKidsNextDoor'': The [[CreepyChild Delightful Children]] alternate between giving slasher smiles, psychotic smirks, or just [[DissonantSerenity smiling calmly]]. And yes, it's creepy.
* Fred in the ''WesternAnimation/CourageTheCowardlyDog'' episode "Freaky Fred" wears one of these almost constantly. And speaks in prose in a delicious voice. Ironically, despite being one of the most genuinely and memorably disturbing characters in the series he's [[VillainyFreeVillain actually not such a bad fellow]]... provided you don't get locked in a room with him and his shaver, of course.
* Wayne Cramp of ''WesternAnimation/TheCrampTwins'' has this as a default expression.
* ''WesternAnimation/DannyPhantom'' villain [[FutureMeScaresMe Dark Danny]] does this quite frequently -- it's part of his charm. [[ArchEnemy Vlad Plasmius]] also gives us one from time to time when he's feeling especially deranged, but he mostly sticks to his PsychoticSmirk.
* ''WesternAnimation/{{Daria}}'''s non-canon pilot has [[TheSnarkKnight Daria]]'s [[http://www.dariawiki.org/wiki/images/thumb/1/1a/Daria%27s_smile.png/200px-Daria%27s_smile.png famous smirk]] as she performs a BatmanGambit to get petty revenge on [[DumbJock Kevin]]. {{Averted}} in the show proper, where Daria ([[CharacterizationMarchesOn now much calmer and deadpan]]) is instead prone to the occasional MonaLisaSmile.
* ''WesternAnimation/EdEddNEddy'': [[spoiler: Eddy's Older Brother]] gives a particularly creepy one [[https://static.tvtropes.org/pmwiki/pub/images/ow_3006.JPG of these]] in TheMovie.
** In a more comedic example, [[StalkerWithACrush The Kanker Sisters]] were prone to these too.
** So was [[EnfantTerrible Sarah]].
** And Eddy whenever he's cooking up a scam.
** Kevin too, right before he'd beat up one of the Eds.
* Mr. Crocker from ''WesternAnimation/TheFairlyOddParents'' is an expert in these kinds of smiles. That grin is made even funnier when it shatters. Complete with a sound of breaking glass.
* Near the end of an episode of ''WesternAnimation/FamilyGuy'', [[spoiler:New Brian actually does give this when he tells Stewie of him using Rupert the Teddy Bear for his pleasure]], giving out the evilest slasher smile he ever gave.
** Stewie gives one in "A Very Special Family Guy Freakin' Christmas" when he gets his picture taken with Santa.
** In "Road to the Multiverse", Bunny!Tom Tucker has one of these before he and the rest of the Disneyfied characters beat up Mort.
* ''WesternAnimation/FinalSpace'': Grinning from ear-to-ear with a malevolent look in one's eyes and brows is a telltale sign of DemonicPossession by Invictus. [[spoiler:Invictus' little [[TheAntichrist Antichrist]]]] the Lord Commander himself sports a grin that would ''almost'' make Invictus proud when he's doing something really nasty or devious.
* In ''WesternAnimation/GravityFalls'', "Bipper" (Bill Cipher while [[DemonicPossession possessing Dipper's body]] seems to be wearing one of these at almost [[http://animating-gravity.tumblr.com/post/97246312335/why-is-bipper-smiling-like-all-the-time all times]]. Considering he's a [[EldritchAbomination psychopathic dream demon]] bent on bringing about the end of the world who delights in causing Dipper's body insufferable torture while inside it, this seems rather appropriate, despite even how unnerving it is to see a character we know well look suddenly so malevolent. The artists even went as far as to slightly change the way his teeth and gums look in order to make it especially [[UncannyValley creepy]].
* ''WesternAnimation/HowTheGrinchStoleChristmas'': The Grinch smiles in a sinister fashion when he gets his "wonderful, ''awful'' idea" to impersonate Santa Claus and steal Christmas.
* ''WesternAnimation/InvaderZim'' typically dons one of these before unleashing {{doom|yDoomsOfDoom}} on the PunyEarthlings, more-likely-than-not followed by an EvilLaugh.
* ''WesternAnimation/Invincible2021'': When the [[Characters/Invincible2021Supervillains Sequids]] gain a focal host for their HiveMind in the form of [[spoiler:one of the astronauts sent to Mars]], said host has a Slasher Smile whilst directing the Sequids to overwhelm the Martian race.
* ''WesternAnimation/JimmyTwoShoes'': Heloise, being [[AxCrazy Heloise]], is prone to these. It's strangely adorable on her.
* Mr. Cat from ''WesternAnimation/{{Kaeloo}}'' does this quite often, usually before [[ChainsawGood using a chainsaw]] on [[NighInvulnerable Quack Quack]].
* WesternAnimation/KimPossible herself [[https://cdn.kpfanworld.com/caps/std/Image2426.jpg flashes one]] to Drakken in ''WesternAnimation/KimPossibleMovieSoTheDrama'' before [[PunchedAcrossTheRoom punching him in the face so hard he flies across the room]], which is also the first time she directly hits him in the series. She also has a tendency to flash [[PsychoticSmirk Psychotic Smirks]]. Considering the fact that she's the ''good guy'', it's rather unsettling.
* ''WesternAnimation/LegionOfSuperheroes'': in the episode "Cry Wolf" Timber Wolf did this [[spoiler: showing us that he was [[BrainwashedAndCrazy under the nanite's influence]]]]
** In his debut episode, his [[EvilutionaryBiologist father]] also demonstrated this as he was going through his VillainousBreakdown while [[TheDogBitesBack he released his mutated animals to go after the Legion.]]
* Combined with ''WesternAnimation/TheLooneyTunesShow'' song "We Are in Love", [[http://images3.wikia.nocookie.net/__cb20110717204245/looneytunesshow/images/1/1c/Snapshot20110717155807.png it might be hard]] [[http://images1.wikia.nocookie.net/__cb20110717204238/looneytunesshow/images/4/43/Snapshot20110717155804.png to look at Lola the same way anymore]].
* ''WesternAnimation/TheLoudHouse'': Lola makes several smiles when she plans revenge on her sisters for slighting her in their fake stories about making her mad.
* On ''WesternAnimation/{{Madeline}}'', Pepito gets a few in the "Bad Bat Hat" song. Pepito being the wearer of said hat and the song being about him being a naughty boy.
* Vendetta from ''WesternAnimation/MakingFiends'' has shown one out of aggression and frustration in the episode Super Evil.
* Psycho, aka "Smiley," TheDragon from ''WesternAnimation/MaxSteel''.
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' examples:
** Pinkie Pie gives us an [[https://www.youtube.com/watch?v=B5RWk171beU absolutely terrifying example]] in "Party of One".
** Later on in Season 2's "Lesson Zero", Twilight Sparkle's SanitySlippage results in a rapidly-worsening succession of disturbing [[TheUnsmile Unsmiles]]. [[http://s3.amazonaws.com/kym-assets/photos/images/original/000/186/252/71479%20-%20Cutie_Mark_Crusaders%20Sweetie_Belle%20animated%20apple_bloom%20cmc%20hi_girls%20insane%20scootaloo%20twilight_sparkle.gif?1318691772 Taken out of context]], these can result in some ''severe'' horror. [[https://www.youtube.com/watch?v=EAkSwmhp2sg This]] is probably the most famous "smile" she gives.
** Discord from Season 2 also gives a nice one when he pretty much {{Force Choke}}s the mane cast.
** Then there's Princess Cadence [[spoiler:Actually an impostor]] in "A Canterlot Wedding, Part 1" when she [[spoiler:imprisons Twilight Sparkle.]]
** Trixie gives a nice one in the beginning of "[[Recap/MyLittlePonyFriendshipIsMagicS3E5MagicDuel Magic Duel]]".
** In "Just for Sidekicks", Spike warns the Cutie Mark Crusaders not to leave the train in the Crystal Empire. In response, they each get one before subjecting him to TickleTorture.
** Rarity gives a [[StealthPun pretty]] good one in [[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]] when she shows off her new dress line she made while under the influence of the eponymous spell.
** From the Season 8 finale after her true nature is revealed, [[spoiler:[[FaceOfAnAngelMindOfADemon Cozy Glow]]]] sports these ''a lot'', especially when she is imprisoned in [[DraggedOffToHell Tartarus]]. The last of these mentioned even provides the image for the episode's recap page.
* WesternAnimation/ThePenguinsOfMadagascar: [[OnlySaneMan Maurice]] flashes one after [[ItMakesSenseInContext knocking out King Julien with a rolling pin]] in the episode [[OutOfCharacterMoment "Kingdom Come."]]
* ''WesternAnimation/PhineasAndFerb'': Candace flashes these ''a lot'', mostly when she's in busting mode and gets Mom to come out just before the big idea's disappearance. Doofenshmirtz also flashes these as well.
* ''WesternAnimation/ThePowerpuffGirls''
** Buttercup [[http://powerpuffgirls.wikia.com/wiki/File:Buttercup_smiling_kindly.JPG gets]] [[http://powerpuffgirls.wikia.com/wiki/File:Buttercup_giving_off_a_confy_smile.JPG a]] [[http://powerpuffgirls.wikia.com/wiki/File:Vlcsnap-2015-09-04-20h53m59s153.png few]] in "Moral Decay". Also Blossom gives a rather sinister grin during the ending towards Buttercup.
** [[{{Satan}} Him]] is a master at doing this.
* ''WesternAnimation/ReBoot'''s Hexadecimal had many masks with different emotions, with which she expressed herself, but her Slasher Smile mask is arguably the most (in)famous of all. Scarcely an episode went by without her using it at least once, and she always insisted on sticking her face right up against the camera when she used it.
** In the Season 2 finale Megabyte gives one to Bob before [[spoiler: launching him into a web portal.]]
* During his mental breakdowns Ren of ''WesternAnimation/TheRenAndStimpyShow'' would often sport one of these.
* Angelica of ''WesternAnimation/{{Rugrats}}'' would sometimes indulge in one of these.
* In ''WesternAnimation/TheSpectacularSpiderMan'', Green Goblin possesses one that is quite creepy combined with his EvilLaugh and [[EvilHasABadSenseOfHumor Sadistic One-Liners]].
* ''WesternAnimation/SpongeBobSquarePants'':
** In "Waiting", [=SpongeBob=] mails in for a free prize for a box of Kelpo cereal. He waits for it at the mailbox for an impossibly long time. He finally gets it, and it turns out to be a toy. Patrick, his idiot starfish friend, "breaks" it (Squidward arrives later on and says it's ''supposed'' to do that). Spongebob just has a frozen smile on his face as he looks down at it. The smile stays on the entire following conversation:
-->'''[=SpongeBob=] & Patrick:''' It's beautiful. (Patrick touches it and its springs pop out)\\
'''Patrick:''' [=SpongeBob=]?\\
'''[=SpongeBob=]:''' I waited so long...\\
'''Patrick:''' [=SpongeBob=]?\\
'''[=SpongeBob=]:''' And you broke it...\\
'''Patrick:''' You okay, buddy?\\
'''[=SpongeBob=]:''' Yes, yes I'm okay.\\
'''Patrick:''' (sighs) For a sec, I...\\
'''[=SpongeBob=]:''' (face shifts to fury) YOU! YOU RUINED MY FREE TOY!!!
** Also, "I'VE BEEN WAITING FOR YOU, PATRICK!!"
** In "I Heart Dancing", Squidward has one when [=SpongeBob=] is about to pass out.
** In his own episode, Bubble Bass shows off a particularly [[https://spongebob.fandom.com/wiki/File:Moving_Bubble_Bass_028.png nasty one]] when he got the idea to have Spongebob and Patrick do all of his moving for him.
* Jasper of WesternAnimation/StevenUniverse gives of an especially [[http://i.ytimg.com/vi/QTtk44_5lCQ/maxresdefault.jpg menacing]] smile when [[FusionDance fusing]] with Lapis.
* ''WesternAnimation/StormHawks'': Most if not all of the villains are fond of making wide, malevolent grins.
* In ''WesternAnimation/TangledTheSeries'', The "Enchanted Girl"/[[spoiler: Zhan Tiri]] wears these smiles quite often.
* [[BadPowersGoodPeople Raven]] from ''WesternAnimation/TeenTitans2003'' dons one of these in "Nevermore", when her emotions and power go out of control.
* Duncan from ''WesternAnimation/TotalDrama'' shows these from time to time. More so in the second season.
** [[spoiler: Mike's SplitPersonality Mal]] is also fond of giving them in the fifth season.
** [[BigBad The Ice Dancers]] both give one in [[spoiler:the last episode]].
* Try to name someone in ''WesternAnimation/TheVentureBrothers'' who '''hasn't''' done one yet.
* ''WesternAnimation/{{Wakfu}}'': [[spoiler:[[Characters/{{Wakfu}} Qilby]]]] is prone to grinning like a ''total psycho'' a lot after he merges with the Eliacube.
* ''WesternAnimation/XiaolinShowdown'': Omi sports a lot of malicious grins when he's converted to the Heylin side and becomes a BloodKnight CreepyChild.
* PlayedForLaughs on ''WesternAnimation/YoungJustice2010'' when Green Beetle allows Megan to read his mind and puts on an ''epically'' intimidating grin while explaining it's important they all trust each other. He's new to human customs and thought all smiles were friendly.
-->'''Green Beetle:''' ''[{{Beat}}]'' Does my smile displease? Is this ''not'' how humans convey friendship and put each other at ease?
** Possibly an example of TruthInTelevision, or, more accurately, Urban Legend In Television. In the past, some people believed that sharks grinned and winked as they moved in for the kill. In actual fact, sharks' jaws swing down and forward to allow them to bite, and a membrane moves to cover their eyes so that they don't get damaged in the assault. [[ThreateningShark The look certainly gives the appearance of a scary grin, which may go some way to explain why sharks are such demonised predators.]] It seems unlikely that anyone being attacked by a shark would care whether it looked like it was grinning or not.
** In a similar vein: [[Literature/MobyDick "I grin at thee, thou grinning whale."]]
* ''WesternAnimation/{{Amphibia}}'':
** [[NightmareFetishist Maddie]] has several moments where she sports an unsettling ear-to-ear grin which could haunt your nightmares, although she's actually a really chill person. One of the most notable instances is the grin she gives [[spoiler:Barry]] while cackling, which is ''not'' a case of her looking more creepy that she means to be, in "[[Recap/AmphibiaS3E20SashasAngels Sasha's Angels]]".
** [[BloodKnight General Yunan]] may be funny and silly, but when she intends to kill and her blood starts rushing, she looks like [[https://static.wikia.nocookie.net/amphibiapedia/images/a/ac/Toadcatcher_%28189%29.png/revision/latest/scale-to-width-down/1000?cb=20200806195026 this]].
** [[spoiler:Andrias]] smiles quite ''unsettlingly'' during and after the build-up to his reveal that he was EvilAllAlong, in "[[Recap/AmphibiaS2E36TrueColors True Colors]]".
** Though it's not quite a GlasgowGrin, the Cloak-bot grins ''a lot'', most notably when it's getting close to killing Anne and it lets out an unsettling laugh to go with it.
** [[spoiler:Darcy]] has quite a few intimidating grins while they possess a human body, including a truly ''psychotic'' ear-to-ear grin after they [[spoiler:cut off Grime's arm]].
* In ''WesternAnimation/AvatarTheLastAirbender'', Azula's iconic PsychoticSmirk [[SanitySlippage gradually morphs into one of these over the course of the last few episodes of the series.]]
** Her father, Fire Lord Ozai, also sports one in the finale when he's attempting to burn down the entire Earth Kingdom.
** [[CuteBruiser Toph]]'s first sign of emotion in the series after winning the Earth Rumble tournament is to [[https://c2.staticflickr.com/4/3660/3280963704_94fcb87cd3.jpg grin]] like the boss she is.
** Sokka has a [[http://static.fjcdn.com/pictures/Sokka_2d6392_841964.jpg truly epic one]], when he trying to sneak up on Aang [[TrainingMontage during training]] which has long since become meme-bait.
* The [[PsychoForHire Grim Reaper]] in ''WesternAnimation/TheAvengersEarthsMightiestHeroes'' flashes one of these whenever he's about to fight someone. (Or whenever he's beaten them.)
* Can you believe the titular duo from ''WesternAnimation/BeavisAndButthead'' can pull of one? Well, they ''both'' can and it's downright terrifying when they do. Just check out one [[https://i.pinimg.com/236x/68/68/3b/68683b8685ae317dd56ab3d2dadabeda--the-movie.jpg here]].
* [[EvilCounterpart Kevin 11]] did this ''very'' often in the original ''WesternAnimation/{{Ben 10}}''. He stopped doing this after [[HeelFaceTurn reforming]] in ''[[WesternAnimation/Ben10AlienForce Alien Force]]''... [[spoiler:Then starts doing it again in Season 1 of ''[[WesternAnimation/Ben10UltimateAlien Ultimate Alien]]'' after being turned insane again.]]
* The twin kittens in ''WesternAnimation/BestEd'' give these all the time, the only time they DROP their smile is at Buddy the Squirrel, who gives an OhCrap moment whenever they do.
* [[spoiler:William Dunbar]], of all people in '' WesternAnimation/CodeLyoko'' displays this while in Lyoko while [[spoiler:possessed by XANA after the ending of the third season.]] This is helped by the fact that he is given a {{BFS}} to use as a weapon while backed up by Monsters.
* ''WesternAnimation/CodenameKidsNextDoor'': The [[CreepyChild Delightful Children]] alternate between giving slasher smiles, psychotic smirks, or just [[DissonantSerenity smiling calmly]]. And yes, it's creepy.
* Fred in the ''WesternAnimation/CourageTheCowardlyDog'' episode "Freaky Fred" wears one of these almost constantly. And speaks in prose in a delicious voice. Ironically, despite being one of the most genuinely and memorably disturbing characters in the series he's [[VillainyFreeVillain actually not such a bad fellow]]... provided you don't get locked in a room with him and his shaver, of course.
* Wayne Cramp of ''WesternAnimation/TheCrampTwins'' has this as a default expression.
* ''WesternAnimation/DannyPhantom'' villain [[FutureMeScaresMe Dark Danny]] does this quite frequently -- it's part of his charm. [[ArchEnemy Vlad Plasmius]] also gives us one from time to time when he's feeling especially deranged, but he mostly sticks to his PsychoticSmirk.
* ''WesternAnimation/{{Daria}}'''s non-canon pilot has [[TheSnarkKnight Daria]]'s [[http://www.dariawiki.org/wiki/images/thumb/1/1a/Daria%27s_smile.png/200px-Daria%27s_smile.png famous smirk]] as she performs a BatmanGambit to get petty revenge on [[DumbJock Kevin]]. {{Averted}} in the show proper, where Daria ([[CharacterizationMarchesOn now much calmer and deadpan]]) is instead prone to the occasional MonaLisaSmile.
* ''WesternAnimation/EdEddNEddy'': [[spoiler: Eddy's Older Brother]] gives a particularly creepy one [[https://static.tvtropes.org/pmwiki/pub/images/ow_3006.JPG of these]] in TheMovie.
** In a more comedic example, [[StalkerWithACrush The Kanker Sisters]] were prone to these too.
** So was [[EnfantTerrible Sarah]].
** And Eddy whenever he's cooking up a scam.
** Kevin too, right before he'd beat up one of the Eds.
* Mr. Crocker from ''WesternAnimation/TheFairlyOddParents'' is an expert in these kinds of smiles. That grin is made even funnier when it shatters. Complete with a sound of breaking glass.
* Near the end of an episode of ''WesternAnimation/FamilyGuy'', [[spoiler:New Brian actually does give this when he tells Stewie of him using Rupert the Teddy Bear for his pleasure]], giving out the evilest slasher smile he ever gave.
** Stewie gives one in "A Very Special Family Guy Freakin' Christmas" when he gets his picture taken with Santa.
** In "Road to the Multiverse", Bunny!Tom Tucker has one of these before he and the rest of the Disneyfied characters beat up Mort.
* ''WesternAnimation/FinalSpace'': Grinning from ear-to-ear with a malevolent look in one's eyes and brows is a telltale sign of DemonicPossession by Invictus. [[spoiler:Invictus' little [[TheAntichrist Antichrist]]]] the Lord Commander himself sports a grin that would ''almost'' make Invictus proud when he's doing something really nasty or devious.
* In ''WesternAnimation/GravityFalls'', "Bipper" (Bill Cipher while [[DemonicPossession possessing Dipper's body]] seems to be wearing one of these at almost [[http://animating-gravity.tumblr.com/post/97246312335/why-is-bipper-smiling-like-all-the-time all times]]. Considering he's a [[EldritchAbomination psychopathic dream demon]] bent on bringing about the end of the world who delights in causing Dipper's body insufferable torture while inside it, this seems rather appropriate, despite even how unnerving it is to see a character we know well look suddenly so malevolent. The artists even went as far as to slightly change the way his teeth and gums look in order to make it especially [[UncannyValley creepy]].
* ''WesternAnimation/HowTheGrinchStoleChristmas'': The Grinch smiles in a sinister fashion when he gets his "wonderful, ''awful'' idea" to impersonate Santa Claus and steal Christmas.
* ''WesternAnimation/InvaderZim'' typically dons one of these before unleashing {{doom|yDoomsOfDoom}} on the PunyEarthlings, more-likely-than-not followed by an EvilLaugh.
* ''WesternAnimation/Invincible2021'': When the [[Characters/Invincible2021Supervillains Sequids]] gain a focal host for their HiveMind in the form of [[spoiler:one of the astronauts sent to Mars]], said host has a Slasher Smile whilst directing the Sequids to overwhelm the Martian race.
* ''WesternAnimation/JimmyTwoShoes'': Heloise, being [[AxCrazy Heloise]], is prone to these. It's strangely adorable on her.
* Mr. Cat from ''WesternAnimation/{{Kaeloo}}'' does this quite often, usually before [[ChainsawGood using a chainsaw]] on [[NighInvulnerable Quack Quack]].
* WesternAnimation/KimPossible herself [[https://cdn.kpfanworld.com/caps/std/Image2426.jpg flashes one]] to Drakken in ''WesternAnimation/KimPossibleMovieSoTheDrama'' before [[PunchedAcrossTheRoom punching him in the face so hard he flies across the room]], which is also the first time she directly hits him in the series. She also has a tendency to flash [[PsychoticSmirk Psychotic Smirks]]. Considering the fact that she's the ''good guy'', it's rather unsettling.
* ''WesternAnimation/LegionOfSuperheroes'': in the episode "Cry Wolf" Timber Wolf did this [[spoiler: showing us that he was [[BrainwashedAndCrazy under the nanite's influence]]]]
** In his debut episode, his [[EvilutionaryBiologist father]] also demonstrated this as he was going through his VillainousBreakdown while [[TheDogBitesBack he released his mutated animals to go after the Legion.]]
* Combined with ''WesternAnimation/TheLooneyTunesShow'' song "We Are in Love", [[http://images3.wikia.nocookie.net/__cb20110717204245/looneytunesshow/images/1/1c/Snapshot20110717155807.png it might be hard]] [[http://images1.wikia.nocookie.net/__cb20110717204238/looneytunesshow/images/4/43/Snapshot20110717155804.png to look at Lola the same way anymore]].
* ''WesternAnimation/TheLoudHouse'': Lola makes several smiles when she plans revenge on her sisters for slighting her in their fake stories about making her mad.
* On ''WesternAnimation/{{Madeline}}'', Pepito gets a few in the "Bad Bat Hat" song. Pepito being the wearer of said hat and the song being about him being a naughty boy.
* Vendetta from ''WesternAnimation/MakingFiends'' has shown one out of aggression and frustration in the episode Super Evil.
* Psycho, aka "Smiley," TheDragon from ''WesternAnimation/MaxSteel''.
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' examples:
** Pinkie Pie gives us an [[https://www.youtube.com/watch?v=B5RWk171beU absolutely terrifying example]] in "Party of One".
** Later on in Season 2's "Lesson Zero", Twilight Sparkle's SanitySlippage results in a rapidly-worsening succession of disturbing [[TheUnsmile Unsmiles]]. [[http://s3.amazonaws.com/kym-assets/photos/images/original/000/186/252/71479%20-%20Cutie_Mark_Crusaders%20Sweetie_Belle%20animated%20apple_bloom%20cmc%20hi_girls%20insane%20scootaloo%20twilight_sparkle.gif?1318691772 Taken out of context]], these can result in some ''severe'' horror. [[https://www.youtube.com/watch?v=EAkSwmhp2sg This]] is probably the most famous "smile" she gives.
** Discord from Season 2 also gives a nice one when he pretty much {{Force Choke}}s the mane cast.
** Then there's Princess Cadence [[spoiler:Actually an impostor]] in "A Canterlot Wedding, Part 1" when she [[spoiler:imprisons Twilight Sparkle.]]
** Trixie gives a nice one in the beginning of "[[Recap/MyLittlePonyFriendshipIsMagicS3E5MagicDuel Magic Duel]]".
** In "Just for Sidekicks", Spike warns the Cutie Mark Crusaders not to leave the train in the Crystal Empire. In response, they each get one before subjecting him to TickleTorture.
** Rarity gives a [[StealthPun pretty]] good one in [[Recap/MyLittlePonyFriendshipIsMagicS4E23InspirationManifestation Inspiration Manifestation]] when she shows off her new dress line she made while under the influence of the eponymous spell.
** From the Season 8 finale after her true nature is revealed, [[spoiler:[[FaceOfAnAngelMindOfADemon Cozy Glow]]]] sports these ''a lot'', especially when she is imprisoned in [[DraggedOffToHell Tartarus]]. The last of these mentioned even provides the image for the episode's recap page.
* WesternAnimation/ThePenguinsOfMadagascar: [[OnlySaneMan Maurice]] flashes one after [[ItMakesSenseInContext knocking out King Julien with a rolling pin]] in the episode [[OutOfCharacterMoment "Kingdom Come."]]
* ''WesternAnimation/PhineasAndFerb'': Candace flashes these ''a lot'', mostly when she's in busting mode and gets Mom to come out just before the big idea's disappearance. Doofenshmirtz also flashes these as well.
* ''WesternAnimation/ThePowerpuffGirls''
** Buttercup [[http://powerpuffgirls.wikia.com/wiki/File:Buttercup_smiling_kindly.JPG gets]] [[http://powerpuffgirls.wikia.com/wiki/File:Buttercup_giving_off_a_confy_smile.JPG a]] [[http://powerpuffgirls.wikia.com/wiki/File:Vlcsnap-2015-09-04-20h53m59s153.png few]] in "Moral Decay". Also Blossom gives a rather sinister grin during the ending towards Buttercup.
** [[{{Satan}} Him]] is a master at doing this.
* ''WesternAnimation/ReBoot'''s Hexadecimal had many masks with different emotions, with which she expressed herself, but her Slasher Smile mask is arguably the most (in)famous of all. Scarcely an episode went by without her using it at least once, and she always insisted on sticking her face right up against the camera when she used it.
** In the Season 2 finale Megabyte gives one to Bob before [[spoiler: launching him into a web portal.]]
* During his mental breakdowns Ren of ''WesternAnimation/TheRenAndStimpyShow'' would often sport one of these.
* Angelica of ''WesternAnimation/{{Rugrats}}'' would sometimes indulge in one of these.
* In ''WesternAnimation/TheSpectacularSpiderMan'', Green Goblin possesses one that is quite creepy combined with his EvilLaugh and [[EvilHasABadSenseOfHumor Sadistic One-Liners]].
* ''WesternAnimation/SpongeBobSquarePants'':
** In "Waiting", [=SpongeBob=] mails in for a free prize for a box of Kelpo cereal. He waits for it at the mailbox for an impossibly long time. He finally gets it, and it turns out to be a toy. Patrick, his idiot starfish friend, "breaks" it (Squidward arrives later on and says it's ''supposed'' to do that). Spongebob just has a frozen smile on his face as he looks down at it. The smile stays on the entire following conversation:
-->'''[=SpongeBob=] & Patrick:''' It's beautiful. (Patrick touches it and its springs pop out)\\
'''Patrick:''' [=SpongeBob=]?\\
'''[=SpongeBob=]:''' I waited so long...\\
'''Patrick:''' [=SpongeBob=]?\\
'''[=SpongeBob=]:''' And you broke it...\\
'''Patrick:''' You okay, buddy?\\
'''[=SpongeBob=]:''' Yes, yes I'm okay.\\
'''Patrick:''' (sighs) For a sec, I...\\
'''[=SpongeBob=]:''' (face shifts to fury) YOU! YOU RUINED MY FREE TOY!!!
** Also, "I'VE BEEN WAITING FOR YOU, PATRICK!!"
** In "I Heart Dancing", Squidward has one when [=SpongeBob=] is about to pass out.
** In his own episode, Bubble Bass shows off a particularly [[https://spongebob.fandom.com/wiki/File:Moving_Bubble_Bass_028.png nasty one]] when he got the idea to have Spongebob and Patrick do all of his moving for him.
* Jasper of WesternAnimation/StevenUniverse gives of an especially [[http://i.ytimg.com/vi/QTtk44_5lCQ/maxresdefault.jpg menacing]] smile when [[FusionDance fusing]] with Lapis.
* ''WesternAnimation/StormHawks'': Most if not all of the villains are fond of making wide, malevolent grins.
* In ''WesternAnimation/TangledTheSeries'', The "Enchanted Girl"/[[spoiler: Zhan Tiri]] wears these smiles quite often.
* [[BadPowersGoodPeople Raven]] from ''WesternAnimation/TeenTitans2003'' dons one of these in "Nevermore", when her emotions and power go out of control.
* Duncan from ''WesternAnimation/TotalDrama'' shows these from time to time. More so in the second season.
** [[spoiler: Mike's SplitPersonality Mal]] is also fond of giving them in the fifth season.
** [[BigBad The Ice Dancers]] both give one in [[spoiler:the last episode]].
* Try to name someone in ''WesternAnimation/TheVentureBrothers'' who '''hasn't''' done one yet.
* ''WesternAnimation/{{Wakfu}}'': [[spoiler:[[Characters/{{Wakfu}} Qilby]]]] is prone to grinning like a ''total psycho'' a lot after he merges with the Eliacube.
* ''WesternAnimation/XiaolinShowdown'': Omi sports a lot of malicious grins when he's converted to the Heylin side and becomes a BloodKnight CreepyChild.
* PlayedForLaughs on ''WesternAnimation/YoungJustice2010'' when Green Beetle allows Megan to read his mind and puts on an ''epically'' intimidating grin while explaining it's important they all trust each other. He's new to human customs and thought all smiles were friendly.
-->'''Green Beetle:''' ''[{{Beat}}]'' Does my smile displease? Is this ''not'' how humans convey friendship and put each other at ease?
