->''"Would you like a room?"''

''Gregory Horror Show'' is a CGI {{anime}} series produced by Naomi Iwata of Milky Cartoon. [[MindScrew What can be agreed on]] is that it takes place in some sort of purgatory world which includes a HellHotel. The creator of this world is an old anthropomorphic mouse, Gregory, who also owns and runs the hotel, "Gregory House." ([[Series/{{House}} No, not that one.]]) There are three seasons, a fourth half-season on the [=DVDs=] as a side series, a UsefulNotes/PlayStation2 game, and a manga.

The first two seasons take place in Gregory House, and take place from the perspective of the season's protagonist, known as the "Guest." The season then shows what happens to him/her after finding themselves lost and finding the hotel, checking in, and eventually trying to escape back into reality and away from the AxCrazy locals. The [=PS2=] game makes use of these seasons as a base, as it has the player control a Guest trying to escape.

The third season features no Guest character, but instead follows Gregory as he takes a ride on a sentient train to who-knows-where and comes across many familiar faces along the way. This season is a [[LighterAndSofter little lighter with a noticeable increase in comedic tone]].

The sub-season focuses on one of the more recurring characters, Catherine, as she works as a nurse in a hospital and [[CareerVersusMan engages in self-deliberation about what she wants in life]].

The manga, ''Gregory Horror Show: Another World'', was created by another author and many details of the setting are so different from the anime aside from the ArtShift to the point where it seems like a [[GaidenGame Gaiden Manga]] (although given [[YourMindMakesItReal the nature of Gregory's world]], it seems appropriate). Our guest has a name this time, Tooru Takenozuka, a 22-year-old freeter (a.k.a. {{NEET}}) who takes a room at the only apartment complex that will take him, Gregory House, while DesperatelyLookingForAPurposeInLife.

On July 3rd, 2015, Naomi Iwata's website went up, including [[http://www.iwatanaomi.com/character/gregory.html a page]] of a possible new season called ''Mystery Holiday''. Details are scarce, but it seems to include a major ArtShift and a focus on more child-oriented problems and worries, as opposed to the more adult problems of the first two Guests.

The series has a minor cult following.

Not to be confused with the ''[[Film/TheRockyHorrorPictureShow Rocky Horror Show]]''.

!!This series provides examples of:

* AbusiveParents: Gregory Mama is both emotionally abusive (can't go a single conversation without insulting Gregory) and physically abusive (she tends hit him in the head with her staff). She's also the only character Gregory is actually afraid of, and in ''The Second Guest,'' [[KickTheSonOfABitch he briefly considers letting her die.]]
* AdultFear: The little girl Lost Doll who suddenly becomes violent when picked up, the Judgement Boy who forces you to choose between love and money in a quick second, the child Mummy Dog having an ''axe stuck in his head'' and yet not realizing it, and if you want to count pets, the story of Neko Zombie.
* AfterlifeExpress: The Last Train.
* AlwaysNight: In its full three series, it is never day. In the video game, you could go outside at 3:00 PM and it would look the same as night, and in the sub-series ''The Bloody Karte'', which featured some periods of twilight, but still no daylight.
** Once or twice we get a scene that seems to take place in the daylight, but those turn out to either be illusions or possibly just another quirk of the hotel.
* AnthropomorphicPersonification: Each of the guests supposedly embodies a universal fear. Some of the more obvious are Hell's Chef ([[{{Pride}} fear of criticism]]) and Judgment Boy ([[SadisticChoice fear of consequences.]])
* ArtEvolution: In the first season, while they did squash and stretch, the shapes that made up the characters' bodies (torso and legs) didn't bend, making them all seem stiff. From ''Second Guest'' onward, the characters were able to fully bend and twist like actual bodies could, making them much more life-like.
* ArtShift: Combined with DeliberatelyMonochrome, [[spoiler:the real world is portrayed in black-and-white live-action.]]
** ''Mystery Holiday'' seems likely to have one, including some characters getting redesigns.
* AxCrazy: In the anime, damn near everyone in the hotel (and if they aren't, they're not quite there). Enforced in the Game where taking the bottled soul of a guest causes them to chase you and attack you to get it back.
* TheBadGuyWins: [[spoiler: It doesn't matter how hard the Guests try to escape, how much they want to return home...Gregory ''will always'' get their souls.]]
* BerserkButton: Cigarettes dull taste buds. Hell's Chef does not take the sight of the little white things well.
-->"NO SMOKING! '''''NO SMOKING!!''' Cigarettes are the enemies of CUISINE!''"
* {{BFS}}: Hell's Chef's knife. It easily cleaves through elephant bone.
* [[BittersweetEnding Bittersweet]] / DownerEnding: Both for the first two series and the game.
** First series: [[spoiler:The Guest manages to, with Death's help, escape Gregory House and return to reality. However, then he sees the world as gray and returns, becoming Haniwa Salaryman, who would appear at least once in every season thereafter.]]
** ''The Second Guest'': [[spoiler:Neko Zombie goes fire-kamikaze to destroy Gregory's world, and tells the Second Guest to throw herself into the flames to complete the process. She doesn't, and the hotel quickly resurrects itself, with the Second Guest becoming a member of Gregory's family.]]
** In the game, [[spoiler:Neko Zombie burns the hotel down like before. The PlayerCharacter escapes back to reality, but then returns for good immediately after.]]
%%* BlackComedy
* BlatantLies: "Those stairs get me every time."
* BossSubtitles: In the [=PS2=] game, each resident gets one during their introduction video. Same with the manga.
* BrattyHalfPint: James
* CallAHitPointASmeerp: The [=PS2=] game's health bar is a measure of ''mental'' health. When it runs out, you go insane.
* CantTakeCriticism: Perceived or real, Hell's Chef does not react well to having his cooking criticized. A rude pig patron in "The Last Train" made that fatal mistake.
* CareerVersusMan: Catherine has a few struggles with this in ''The Bloody Karte''. It comes to a peak in episode 11. Also, the root of all the Second Guest's problems.
* CatchPhrase: The Judgment Boys have one after their [[SadisticChoice Judgment Game]]. "It was your choice, (and) now you have to live with it."
* ConMan: Public Phone.
-->''"This phone does not accept small change."''
* CoolTrain: The Last Train. Gregory calls it "Ambition."
* CountingSheep: Sleepy Sheep ''tries'' to do this, but he winds up exhausting himself and falling asleep himself.
* CreepyChild: James fits this trope, at least until it becomes apparent that he's just a bored kid in a remote hotel.
** CreepyDoll: Lost Doll.
* DeadlyDoctor: Catherine
* DeliberatelyMonochrome: [[spoiler:Reality for the First Guest in the final episode of the original series.]]
* DoesThisRemindYouOfAnything: Catherine gets what can only be described as "orgasmic pleasure" from blood-drawing...and the episode of ''The Second Guest'' when she draws blood from Gregory, ignoring his pleas for her to stop, carries quite a few rape undertones.
* DontFearTheReaper: [[TheGrimReaper Death]] is one of the only characters that's clearly friendly to the protagonists of the series.
* DrowningMySorrows: Inverted. The guest in the second season tries to do this, but Gregory's cocktail makes her memories become ''clearer'' instead.
* DysfunctionJunction: The hotel attracts a bizarre slew of guests, each with their own obsession and delusions.
* ElectricBoogaloo: Starting in the second season, each season and the Catherine side series had a subtitle. In order: ''The Second Guest'', ''The Last Train'', and ''The Bloody Karte''.
** The manga is subtitled ''Another World''.
* EscapeFromTheCrazyPlace: Every human Guest somehow lost their way in life, then ended up at the Gregory House after walking through fog. Their stories revolve around trying to get away from the hotel before they go stark raving mad.
* EvilChef: Hell's Chef, of course. Perhaps what best cements this are his attempt at murdering The Second Guest for smoking and killing/serving a pig customer that complained about his steak.
* EvilLaugh: A few of the characters. Gregory himself has a trademark evil chuckle; it usually indicates when he's not telling the entire truth.
* ExactlyWhatItSaysOnTheTin: [[MindScrew One of the only solid parts of the show]] is that the majority of the resident's names are quite appropriate. For example, [[TheGunslinger Cactus Gunman]] is a cactus with a gun.
* FateWorseThanDeath: [[spoiler:The final fate of the guests from the first two series.]]
* FestivalEpisode: Neko Zombie's chapter in ''Another World'', complete with GoldfishScoopingGame.
* FlorenceNightingaleEffect: Woe to those that fall victim to this when it happens to [[DeadlyDoctor Catherine]]. The most notable example is with Cactus Gunman in ''The Bloody Karte''.
* FreakyFridayFlip: James and Gregory for an episode and a half in ''The Second Guest''. Gregory Mama is not amused with "Gregory's" antics.
* FrozenFace: Due to the art style, there are quite a few characters who fit this, the eyes being the only thing that moves on their face. [[AvertedTrope This is averted in the manga.]]
* GainaxEnding: To season three - [[spoiler:the season is implied to be a prequel and Gregory prepares to bring the train to Gregory House only for it to be revealed... that it was all a toy being played with by James! But there really were people on it anyway. Including Gregory. Who is playing with the train in the train.]]
* GirlWithPsychoWeapon: Catherine, who has a freaking huge syringe. And she ''loves'' drawing blood with it.
* GhostButler: The front doors are almost always locked when the character tries to escape through them directly.
* {{Golem}}: When Neko Zombie [[KillItWithFire sets the whole hotel on fire]], we see that Hell's Chef is made entirely of candle wax. Logic ([[MindScrew for what it counts in this series]]) suggests this.
* GratuitousSpanish: The Cactus siblings, to go with their wild west theme.
* TheGunslinger: Cactus Gunman. He'd probably be good at it if he could ever hit a target in front of his face.
* HellHotel: Gregory House.
* HotelHellion: James causes much trouble for ''everyone'' in the hotel, but especially his "Grandpa" Gregory.
* ImpactSilhouette: Gregory Mama's door has a Gregory-shaped hole (poorly patched up) in the second half of the second series.
* JawDrop: Catherine has a few in ''The Bloody Karte''. Since she's a lizard, her jaw even detaches as well.
* KillItWithFire: At the end of ''The Second Guest'' (as well as the end of the [=PS2=] game), Neko Zombie sets the whole hotel ablaze in the hopes of finally destroying Gregory's world. Unfortunately for him, the Second Guest's lesson [[DownerEnding remained unlearned]].
* LargeHam: Judgment Boy. '''[=JUDGEMENNTTTTTTTTTTTTT!!!!=]'''
** Also their boss, Judgment Boy Gold.
* LoadsAndLoadsOfCharacters: There are at least two dozen residents in Gregory's world, if not the hotel itself.
* MindScrew: Not just for the viewer, but Gregory runs into a few of these during ''Last Train''. [[PsychologicalHorror This is where most of]] [[SurrealHorror the horror comes from]].
* TheMirrorShowsYourTrueSelf: Or does it really?
* NoNameGiven: Neither of the Guests have their name revealed--official material and fans just [[EveryoneCallsHimBarkeep call them "Guest."]] Averted with the manga's guest, Tooru Takenozuka.
* NotSoDifferent: In the game, the Guest is described as the only [[OnlySaneMan sane one]] at the hotel. But he/she is wholly focused on collecting souls to the detriment of the other guests, and will not stop until they're driven insane. Everyone else has some obsessive goal that they put over other people. The only difference the Guest has from the other residents is that he/she doesn't adhere to a schedule.
* OffscreenTeleportation: Gregory can do this.
* OneWingedAngel: At the end of the first season and the [=PS2=] game, [[spoiler:Gregory becomes a huge ghost and chases you, trying to keep you from escaping to reality.]]
* PetTheDog: Shockingly enough, Gregory has a few of these moments in the third season, such as with Lost Doll and Sleepy Sheep.
* PlotCoupon: The souls in ''Soul Collector''.
* PrecisionFStrike: Gregory has a couple of these in ''The last Train.''
-->''"Ugh, damn it!"''
* {{Pride}}: Supposedly the bane of Hell's Chef; he refuses to eat anyone else's cooking and he kills anyone who insults his even slightly.
* PurelyAestheticGender: In the [=PS2=] game, you control either a young boy or a young girl. The only thing that's different ([[CaptainObvious besides your appearance]]) is Cactus Gunman's horror show: shooting you if you're a boy, smacking you with a rose bouquet if you're a girl.
* RageAgainstTheReflection: Happens with the First Guest in Night 17. He finds that the Mirror of Truth shows Gregory as his true self. He punches Mirror of Truth. A little bit later into the same episode, he punches out another mirror when Gregory is surrounding him.
* ReptilesAreAbhorrent: Catherine.
* RousingSpeech: Gregory delivers one to the train in ''The Last Train'' when it draws the short end of [[SadisticChoice Judgment Boy's game]].
-->'''Greogry:''' You say you don't ''want'' to lead the passengers into the depths of despair? Well I say don't do it! Why should you let someone else decide your destination? [[CrowningMomentOfAwesome There's only one direction: the future! Don't hesitate! Proceed straight ahead!]]
* SadisticChoice: Thankfully, all of Judgment Boy's are hypothetical. Maybe.
* {{Salaryman}}: Haniwa [[ExactlyWhatItSaysOnTheTin Salaryman]].
* SanitySlippage: The hotel can only be found by people who have started to slip already. Prolonged exposure to the hotel results in even ''more'' of this. [[spoiler:By the end of the first two series, both Guests have officially gone off the deep end.]]
** The videogame uses a sanity meter in place of a regular health bar. It slowly but constantly decreases just by being inside the Hotel, although sleeping in your bed completely refills it.
* SchrodingersButterfly: Referenced in episode 21 of ''Last Train''. When Gregory finds himself in a landscape that's apparently [[TimeStandsStill frozen in time]], he finds out the scene is an illusion when he touches a frozen bird and it dissolves into dust.
* SingleStrokeBattle: Between Hell's Chef and Musha Dokuro in ''Last Train''.
* SoulPoweredEngine: Literally enough, the engine of the Last Train. Apparently after wandering enough, lost souls become pure energy.
* SuperpoweredEvilSide: ''Last Train'' seems to suggest that this applies to Lost Doll.
-->'''"Katie":''' I'm inside your body, inside your mind! I am your ''darkness,'' little girl!
%%* SurrealHorror
* SurvivalHorror: The [=PS2=] game, created by Creator/{{Capcom}}.
* TermsOfEndangerment: Gregory calls the First Guest "my friend," and the Second Guest "my dear."
** In the [=PS2=] game, Gregory Mama briefly calls the player-character "Dearie."
* TitleDrop: In Volume 1, Night 10
* VillainProtagonist: Gregory, especially in the third series.
** Catherine in ''The Bloody Karte'' season.
* VillainsOutShopping: The third season follows Gregory as he takes a vacation.
* WeaksauceWeakness: Hell's Chef becomes immobile if the flame on his hat is blown out.
* WhiteVoidRoom: Gregory runs into one of these near the end of ''Last Train''.
* YouCanAlwaysTellALiar: Gregory's not the most honest guy anyway, but you ''know'' he's only telling part of the truth when he starts chuckling.
* YourMindMakesItReal: The hotel is a manifestation of the viewpoint guest's longing for excitement.
''See ya on the next trip!''