History SlasherSmile / AnimeAndManga

** Aisha Clanclan is usually found either smiling [[CatSmile a mischievous smile]] or a genuine smile, due to being a bit of a GenkiGirl. But when she gets an excuse to fight with the full power of a Ctarl-Ctarl, such as when she realizes her opponent in an MMA fight [[spoiler:is also a Ctarl-Ctarl in disguise]], [[https://i.pinimg.com/originals/dd/da/88/ddda88ed9b7b85e61c9218a6eb321c1f.gif her smile]] becomes considerably more malicious.

** [[MagnificentBastard Lelouch]] right after he successfully orders a collective suicide with his handy-dandy new [[HypnoticEyes geass]]. Being [[DespairEventHorizon only]] [[RoyallyScrewedUp semi]]-[[EvilLaugh crazy]], he otherwise reserves it only for special occasions (such as having just added another few digits to his kill count).

* ''Manga/DeathNote'': [[spoiler:As L dies,]] before he [[spoiler:closes his eyes]] he sees Light looking at him with one of these. [[spoiler:Higuchi, too,]] after getting the Shinigami Eyes. One look at that creepy face and death will follow, without the Death Note.

** Main protagonist Hibiki has been known to sport a "rage face" that entails her face (if not her entire body) becoming an entirely black void that sports a crazed grin and [[RedEyesTakeWarning soulless glowing red eyes]]. This occurs because of her Gear overtaking her given how rather than merely possessing it like the other Symphogear users, its fragments were lodged into and have proceeded to merge with her body.

* Hibiki Tachibana from ''Anime/{{Symphogear}}'' has been known to sport a "rage face" that consists of her face becoming a black void that sports a crazed grin and [[RedEyesTakeWarning soulless glowing red eyes]].
* Frequently sported by Viral from ''Anime/TengenToppaGurrenLagann''.
** Which is fitting, given that [[SharkMan he's part shark.]]

** Lord Genome in Episode 15 sports one while he is beating the shit out of a mecha ''with his bare hands''.

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* ''Anime/KillLaKill:'' [[TheDragon Nui]] [[CuteAndPsycho Harime]] is [[FauxAffablyEvil constantly smiling and giggling]] as she makes fun out of screwing around with [[TheHero Ryuko]] [[HotBlooded Matoi]]. But then Ryuko finally shows her up in Episode 22 and [[AnArmAndALeg permanently chops Nui's arms off]] with the recovered halves of the [[ShearMenace Rending Scissors]], nullifying Nui's HealingFactor and leaving her... [[JustForPun "armless".]] The moment it sinks in to Nui that Ryuko is actually going to ''kill'' her (and Ryuko has every right to, since [[YouKilledMyFather Nui murdered Ryuko's father]]), [[VillainousBreakdown Nui completely loses it, dropping her cutesy-poo facade]] and flashing a terrifying "this trope" while [[MadnessMantra ranting on about how much she hates Ryuko]]. Since her breakdown sticks for the rest of the show until her death, she is usually seen afterwards either grinning sadistically if not screaming in rage.

** [[VillainWithGoodPublicity Griffith]] the true villain of Berserk prefers the PsychoticSmirk than anything else.

* ''Manga/MyHeroAcademia'': [[PsychopathicManchild Tomura Shigaraki's]] face is usually hidden by a disembodied hand covering it. However, when that hand is off and he shows his face, he's capable of making [[https://pbs.twimg.com/media/CVbnGs3U8AAvO6F.jpg some pants-crappingly creepy smiles]].

* ''Anime/CyberpunkEdgerunners'': Maine flashes ''[[NightmareFace one of the most pants-shittingly terrifying ones imaginable]]'', with a haunting, bug-eyed gaze to boot, which he delivers to the Trauma Team battle medic who was unlucky enough to be the first to enter the scene to secure the patient while he's going full tilt into Cyberpsychosis.