In order of (more or less) their first appearance in the anime... (Will probably use a different sorting method in time.)

!!! Several characters share the following tropes:

* AnthropomorphicPersonification
* MeaningfulName
* MonsterOfTheWeek: Much of the cast doesn't appear all too often, but most of them have at least one episode per season, and have cameos in other episodes.
* NightmareFuelStationAttendant

!!! Gregory

* AnthropomorphicPersonification: It is ''very'' strongly suggested he's the physical form of (lost) desires and dreams...his hotel/world is a manifestation of chaos.
* ButtMonkey: Becomes this in ''The Bloody Karte'', though he had lots of other moments before that season.
* CollectorOfTheStrange: In the Manga, instead of souls he collects various strange objects, such as a Russian roulette chair and Hitler's dentures.
* CrustyCaretaker
* DirtyOldMan: He has a collection of porn magazines, makes a few suggestive comments to Second Guest, and in ''Bloody Karte,'' he gropes Cactus Girl.
** In the videogame he introduces the concept of book items by confiscating a dirty magazine from the current guest and running off to the Storeroom.
* EvilLaugh: Well, more of a chuckle, but still...
* FauxAffablyEvil: Oh sure, he'll say he wants to help the guests, offer them a place to stay, and calls the Guests "my friend/my dear," but he'll do it while breaking their psyches, swallowing human souls, and actively planning to feed them to his mother.
* OneWingedAngel: [[spoiler: He can become a ghost, usually in a desperate situation (the house burning down for instance).]]
* PetTheDog: He has his moments--mainly in the third and fourth seasons.
* VillainProtagonist: The third season focuses on him instead of a guest.
* YouDirtyRat

!!! The Guest
--> The Guest is the main character of the first two seasons, with everything seen from their eyes. The First Guest is a working man with a wife and son, and the Second Guest is a working woman who struggles with the decision of CareerVersusMan. In the Manga the guest is a jobless 22-year old named Tooru Takenozuka

* [[spoiler:AndThenJohnWasAZombie]]
* BadassNormal: The Second Guest deserves this for the fact that at one point she, rather than just take Gregory's BS, ''picks up an ax and chases him off with it.''
* [[spoiler: [[DownerEnding Downer]] / BittersweetEnding: Neither Guest manages to escape the hotel, and returns to stay forever. The First Guest quite likely becoming Haniwa Salaryman, and the Second Guest becomes a member of Gregory's family.]]
* TheFaceless: Except Tooru from the Manga.
* [[spoiler:FaceHeelTurn: The second guest becomes another member of Gregory's family.]]
* NoNameGiven
* PetTheDog: Both guests engage in this more than once.
* POVCam
* WhatHappenedToTheMouse:[[spoiler: Almost too literally with the second guest, after she becomes part of Gregory's family, she's never mentioned again.]]

!!! Neko Zombie
-->Once part of a family that stayed at Gregory House and cause the Rat a lot of grief, Neko Zombie was seemingly taken apart, put back together,and had his face sewn up. He's usually in his room, shackled and moaning for food.

* AdaptationalVillainy: In the Manga, Neko Zombie is not the chained-up helpful character he is from the show or games. Instead he owns a fish catching game at a festival, teleports the main character into a giant pool and chastises him about being indecisive and hesitant to pick a dream, and is just as insane as everyone else.
* CatsAreMean: Actually he's not a bad guy and genuinely wants to help guests escape if he can, but he's understandably bitter about what was done to him and so he can be snappish. Approaching him during certain times in the game, specifically when he's very hungry, will cause him to attack you. And if you had chocolate on you he takes it without giving and item in return.
* DarkAndTroubledPast: There's the body-being-sewn-up thing, of course, but there's also a hint that something else has happened to him, judging from the way he states he doesn't deserve to leave to Angel Dog.
* DontYouDarePityMe
* [[FearOfThunder Fear Of Thunder/Lightning]]: This is because it was during a thunder/lightning storm that ''someone'' stitched him up.
* HiddenDepths
* HistoricalInJoke: The name "Jack Ketch", which is on his shirt, belonged to an infamous Executioner under King Charles II.
* KillItWithFire: How he destroys the hotel and tries to kill Gregory. [[spoiler:It doesn't work because of the second guest's hesitation.]]
* RedEyesTakeWarning: Averted, though scary-looking and a little snappy, Neko Zombie is one of the few genuinely nice characters in the series.

!!! Lost Doll
-->A sad-looking little girl who continuously sobs because of her lost doll. Unbeknownst to her, she actually ''is'' the doll she cries for, which manifests itself as a blue nasty face on the back of her head.

* AbhorrentAdmirer: In the Manga, she jump scares Tooru, only to find him cute, [[{{Glomp}} hug him hard]], and freak him out.
* CharacterizationMarchesOn: The first two season, her story has no conclusion and she never finds out where her doll is, [[spoiler: In "The Last Train" she finds out the truth about herself via TalkingToThemself, and in "The Bloody Karte" she seems to be co-existing with her evil side in the last episode.]]
* CreepyChild
* CreepyDoll
* DramaticIrony: One side will always pitifully look for her doll, unaware that she is the doll.
* [[spoiler: NotQuiteDead: Cutting her strings seems to only be a temporary measure, as she appears in all the seasons.]]
* PowerFloats: For some reason when she switches to her evil side.[[spoiler: Its because she's suspended and controlled by some unknown force with string.]]
* SuperpoweredEvilSide: Implied in ''The Last Train''
* TheWoobie: When she's not screaming about her dollie, anyway.
* WeaksauceWeakness:[[spoiler: cutting the strings that make her fly seemingly kills her.]]

!!! Hell's Chef
--> A dangerously prideful chef of the house who makes tasty (but dangerous, and dubiously made) cuisine. He seems to be constantly angry, and kills those who mess with or insult his dishes.
* BerserkButton: '''NO SMOKING!'''
* BunnyEarsLawyer: For all his questionable methods and angry tendencies, his food is usually portrayed as tasting REALLY good. In the Manga, for example Tooru is initially not confident in the food, but states it delicious, to which Hell's Chef goes on a lecture about how taste and presentation are two different things, and requests that Tooru eat a Mushroom in his salad, which is revealed to cause paralysis.
* {{BFS}}
* LethalChef: Twice over, in fact! He can kill you with the ingredients that he uses, or if pissed off, cleave you with his knife.
* {{Pride}}: cannot receive criticism, and only ever eats his own cooking.
* WeaksauceWeakness: Gusts of air will blow out the flame on his head, causing him to stop moving.

!!! Catherine
--> A lizard woman who loves to draw blood with an over-sized syringe. Catharine is a lonely woman who desires someone to love, but her fascination with drawing blood, coupled with somewhat of a temper, makes everyone uncomfortable around her.

* DeadlyDoctor
* DoesThisRemindYouOfAnything: When she slowly draws blood, she moans suggestively; and her draining Gregory in season two of his blood, with him pleeing her to stop is reminiscent of a rape.
* TheDragon: seems to be this to Gregory normally.
* GirlWithPsychoWeapon
* IfICantHaveYou: Has shades of this in ''The Bloody Karte,'' such as when [[spoiler:she kills Haniwa Salaryman after he announces his wife wants to get back together with him.]]
* {{Yandere}}

!!! Mummy Dog
--> A young puppy with an axe lodged in his head, not that he knows its there. Wide-eyed and na´ve, Mummy Dog is extremely cheerful towards everyone.

* AdaptationalVillainy: administers a poison pill to you should you get caught by him after stealing his soul in ''soul collector''
* ChildrenAreInnocent: One of the only residents who isn't consciously malicious.
* FailedASpotCheck: Has an ax in his head, which he doesn't seem to acknowledge. He knows he has head-aches, but thinks he just inherited them from his dad.
* GenerationXerox: aside from the axe and clothes, he looks exactly like Mummy Papa.
* ObliviouslyEvil: in the videogame.

!!! Mummy Papa
--> Father of Mummy Dog, Mummy Papa has a sword in his head, is just like his son. Easygoing and calm

* ButtMonkey: slightly, but it's there. In Bloody Karte, for instance, he's stabbed in the head by Musha Dokuro because he was in a wall behind a painting the ghost attacked with a spear. there's no explanation.
* AdaptationalVillainy: in the game.
* FailedASpotCheck: Has an Arabian sword in his head...like his son, he doesn't know it's there. Despite constant splitting headaches.
* ObliviouslyEvil: His horror show in Soul Collector is him giving you a poison pill in the hopes that it will make you feel better.

!!! Judgment Boy
--> A strange-looking puppet/scale-like character who wanders about the hotel on a mounted track in the ceiling, He forces those he meets to answer his questions, usually involving a moral dilemma, and almost always chooses the more terrible answer, regardless of the individuals answer.

* AdaptationalHeroism: in the videogame, while not being overtly heroic, he doesn't foist a question on the player character like he does in the show (preferring instead that they have something with them for the judgment to happen), and is way more liable to drop the dollar sign if you answer his question correctly, giving you his soul as a prize.
* CatchPhrase: "Do you know / Who I am? / They call me / Judgment Boy!"
** In the video game, it's changed to "~Do you know my naaaaame?~"
** "JUDGMENT now!"
* EnsembleDarkhorse
* InsaneTrollLogic: Perhaps not outright ''insane'' logic, but the scenarios he presents and the consequences of the choices made don't necessarily have to happen the way he tells them. Then again, in most cases he's reminding the guests of things that already happened.
* LargeHam
* SadisticChoice: His purpose to to present these to the Guest. ''Hopefully'' they're just hypothetical.
** Averted for the game, where his questions are on the characters you've met.

!!! Cactus Gunman
--> A cactus cowboy who is always looking for a duel, but is actually very cowardly when danger presents itself. despite being armed with weapons, he almost always misses his mark, no matter how close he is to the target.

* AloofBigBrother: At least to his sister...
* AbhorrentAdmirer: for the Second Guest.
* ATeamFiring: He ''very'' seldom hits what he aims at.
** And he ''almost always'' hits Gregory.
* TheGunslinger
* {{Yandere}}: for the Second Guest.

!!! TV Fish
--> A ghost fish with a TV head that swims through the walls of the house while playing a strange tune, its screen can display various images, such as memories and surveillance footage.

* NoGoodDeedGoesUnpunished: Continuously shows the second Guest footage of Gregory's conversation with his Mother, which while helpful, makes her mad enough to hit it.
* TheVoiceless

!!!Public Phone
--> A red phone with feet that lays in public, tricking people into paying him lots of money to use, only to run off once his ruse is found out.

* ConArtist
* LaserGuidedKarma: Impersonates Gregory Mama to steal money from Gregory, only to incite her wrath for impersonating her.

!!! Prompters
--> mysterious darkly dressed characters that do various odd jobs around Gregory House.

* AllThereInTheManual: Twin stage hands who aren't talking to each other.
* TheFaceless
* TheVoiceless
* WhyDoYouKeepChangingJobs: assuming they're all the same two characters.

!!! Gregory Mama
--> Gregory's mother who he grabs souls for to keep up her youthful appearance. However she is actually just as unsightly as her son, who she abuses constantly. She is a powerful sorceress, that combined with her HairTriggerTemper and insatiable desire for souls, make her terrifying when upset.

* AbusiveParents
* EvilMatriarch
* VainSorceress: Subverted in that she's not beautiful at all, she just ''considers'' herself beautiful.
* WickedWitch
* YouDirtyRat

!!! Clock Master & My Son
--> A time controlling father and son who fix clocks in Gregory House.

* TheAlcoholic: Clock Master drinks a lot at the bar due to his problems controlling time due to his old age.
* CatchPhrase: "TIME IS MONEY!!"
* OnlySaneMan: while initially a little bit rude to the first guest, They eventually do agree to at least try and help him out of Gregory House, and in the game, Clock Master is really civil until he finds out you stole My Son's screwdriver.
* PapaWolf: When Clock Master finds you stole something from My Son, he goes absolutely nuts and chases you though the halls until [[spoiler: He strains his time control powers too much]].
* TimeMaster
* TooDumbToLive: Clock Master eats poisonous peanuts in ''The Last Train'', and eats them again in the same episode at the very end because he liked the taste.
* WhatTheHellHero: To get their soul, you basically have to steal from My Son, make his father fly into a rage and make him throw himself out so he doesn't come when My Son yells for him to get you, and extort the soul out of My Son so he can fix his dad.


!!! Frog Fortune-Teller
--> An old frog woman who has a habit of appearing and disappearing at will to tell passerby their futures, sometimes for a price, sometimes for free.

* CoolOldLady: She seems generally kind, if a tad mysterious, and tells predictions to the First and Second Guest involving their predicaments. Compare that to when she made predictions for Gregory (who was too cynical to heed her) and Catharine (who she extorted, and didn't tell the entire fortune to).
* FortuneTeller
* SavePoint: in the PS2 game.
* YouCantFightFate: "Never try to argue with fate..."
* VerbalTic: In the video game she lets out a low "ribbit" after every sentence, it's even in the save game text boxes.

!!! Toilet Baby
--> A strange character that is a baby with a toilet paper dispenser for a head, usually riding on a toilet. Likes to flush him/herself down and drag others who try to help in with it.

* AmbiguousGender: Until Gregory talks about it, you'd have no idea if Toilet Baby is a girl or a boy.
* WoundedGazelleGambit: Does this to drag people into its toilet.
* TheCameo: Appears in ''The Second Guest'' for a few seconds behind Gregory.

!!! Roulette Boy
--> A red-skinned boy with a board game spinner on his head. He's always literally drooling in anticipation for another game, yelling at people to spin his spinner. Though his game tends to have traps on unlucky spaces, he really is just an overtly playful kid and is a good sport when he loses.

* AmazingTechnicolorPopulation: Has red skin.
* AnthropomorphicPersonification: He may represent the uncertainty in/fear of the future and where its going, As in ''The Last Train'' he disappears once Gregory reveals he does know where he's going, and in ''Another World'' his game revolves around Tooru's age and what will happen in his future.
* CatchPhrase: "SPIN ME!" as well as "HURRY UP AND SPIN ME!"
** MostAnnoyingSound
* CasinoPark: what his room turns into when players have what he needs for them to play.
* GracefulLoser: When you win, he gladly hands over his soul to you. It seems that afterwards, he just wants you to play again for his horror show, and you're just EXTREMELY unlucky.
* RealityWarper: He can make doors appear and disappear, drops anvils out of nowhere, cause explosions, and transport the players into a CasinoPark. Its much more prevalent in the Manga and "The Last Train".

!!! Speed Mouse & Mutant Ducks
--> A pair of ducks who run the Speed Mouse, a hapazard roller coaster in some unspecified location of the house.

* NoOSHACompliance
* TotallyRadical: In the English dub, one of them has a light amount of this kind of dialog.

!!! Mirror Man
--> a creature hidden behind the glass of a mirror its in. It lives in a mysterious mirror room under the house, and seems to have nothing else to do than show people their true selves.

* CoolCrown
* MagicMirror
* MirrorMonster: Somewhat literally, as his eye can be seen behind the glass of the mirror and bleeds when its broken
* TheMirrorShowsYourTrueSelf: He claims he does, but it's hard to say if it's true.
** It's subtly hinted that it isn't, as the word "false" is written right above his casing.
* OnlySaneMan: To a degree, he reveals to the Guest that he lacks "substance" [[spoiler: that is his soul]] but is rather mean spirited when he shows the guest his "true self".
* RedEyesTakeWarning: Has a single red eye that shows itself once the First Guest Breaks his glass.

!!! Kinko and Inko
-->A female toucan/parrot and a male safe in a secret room hidden in the Mirror room of the house. They protect something inside Inko.

* {{Engrish}}: "Secret N'''o'''mber."
* HeterosexualLifePartners
* OnlySaneMan: Both of them are actually pretty nice to the first guest. Inko even [[spoiler: kept the first guest's soul safe until he found him again.]]
* RedAlert: Kinko's job is to raise an alarm once someone gets close to Inko. However she is liable to stop once She recognizes the first guest as Inko's friend.
* SimpletonVoice: Inko
* TrueCompanions: Even Though, she'd like other people to talk to, Kinko admits that being with Inko, is better than being alone.
* WhatHappenedToTheMouse: Never seen after season one, despite contributing a big part to the first season.


!!! Angel/Devil Dog
--> Two sides of the same character, Angel Dog is the friendly side, offering aid and guidance, but as her more devious Devil Dog persona, she often explains to people other than who she's guiding specific details about her methods of guidance.

* SplitPersonality

!!! Dead Body
--> Corpses that lie in the graveyard surrounding Gregory House, due to their decomposition, they are usually in need of new bodies to survive.

* TrademarkFavoriteFood: Alcohol
* WeaksauceWeakness: Water and wind.

!!! Judgment Boy Gold
--> Boss of the Judgement Boys, Judgement Boy Gold trains new recruits so that they can pass their own judgments on others.

* LargeAndInCharge: The leader of the Judgment Boys, he's ''much'' bigger than they are.
* [[LargeHam LargER Ham]]

!!! Death
--> The grim reaper, who aids lost souls and those who have become prisoners of Gregory House. A very nice individual, He aids the Guests, and even Gregory at one point.

* BrooklynRage: Not full of rage mind you, but speaks in a joisey accent in the videogame
* DontFearTheReaper: One of the only two characters (besides Neko Zombie in the PS2 game) who's genuinely kind to the Guest.
* TheGrimReaper
* NiceGuy: He's even nice to ''Gregory'' who has caused all of this trouble and chaos.
* TheOtherDarrin: In the English dub he was apparently played by one man, but had three different voices and personalities: one at the end of the first season who was very no-nonsense (understandable, given the situation) and outright told the guest that he might not be happy going home, one for the rest of the series who was calmer and gentler, and one in the game who was much more upbeat and had a very noticeable Brooklyn accent.
* TookALevelInJerkass: though it was a light level. In the video game he seems less patient and a little rough towards the player character than in the cartoon.

!!! Stephen Haniwa Salaryman
--> A Clay statue salary man who is completely wrapped up in his work. Needless to say, he's not all to happy with his life

* [[spoiler:AndThenJohnWasAZombie]]: Canon ''very'' heavily suggests [[spoiler:that he is what the First Guest has become.]]
* EmptyShell: What the monotony of his job has turned him into.
* TheEeyore: A very justified example given what has happened to him and how much he works. Its much more prevalent in ''The Bloody Karte''
* OneSceneWonder: The only time he's given focus on in the second season is a quick handing of his business card to the Second Guest in the first episode.
* {{Salaryman}}: [[MeaningfulName It's in his name]] [[ExactlyWhatItSaysOnTheTin for a reason, you know]].

!!! James
--> Gregory's grandson, a clever, and sometimes nasty, kid who love to entertain himself by playing pranks on others ''especially'' his Grandpa.
* BrattyHalfPint
* CreepyChild: A bit.
* HotelHellion
* KarmaHoudini
* YouDirtyRat

!!! Sleepy Sheep
--> A sheep who tries to help others sleep through the counting sheep method, only to tire himself out and snooze. Has the ability to dream others pasts and dream

* AnxietyDreams: the kicker? They are YOUR dreams...
* CountingSheep: He tries.
* TalkingInYourSleep

!!! Bonsai Kabuki
--> A kabuki stage performer with a Bonsai plant in a pot for a head. Has a third eye on his forehead he uses to show people their desires.

* CovertPervert
* OnlySaneMan: Though his shtick is rather strange (and intrusive) He is actually a rather nice guy. In the Manga, he's the one who makes Tooru confront his feelings about the girl that recently moved into Gregory House for example.
* PowerPerversionPotential: exploits the hell out of his ability by looking at others desires, such as with Gregory.
* ThirdEye: Looking into it reveals your fantasies to both you... AND him.

!!! Cactus Girl
--> Cactus Gunman's Sister, much more talented at the cowboy business, she never-the-less looks up to her brother, though even she has her limits with him.

* ActionGirl
* MurderTheHypotenuse: In ''The Second Guest,'' she 's furious at the female guest for rejecting her brother, and believes Gregory to be her boyfriend...so she threatens to kill him if the guest doesn't date her brother.

!!! Trap Mouse
--> A mechanical mouse who's ears form a very unnerving set of jaws on his head. He's used by Gregory to go after the Second Guest, but ends up attacking Gregory Mama because of James.

* ClockworkCreature
* {{Cloudcuckoolander}}: In the Manga.
* TheDreaded: Gregory is outright ''scared'' when James is revealed to have what lures Mouse Trap to them. Similarly once James sees it, he flat-out obeys his Grandpa and runs off while its busy devouring Gregory Mama.
* TrackingDevice: How it finds its target; it is shaped like a gem encrusted brooch or buckle.

!!! Hell's Taxi
--> A living taxi that only ever goes to Gregory House

* TheTaxi
* ObliviouslyEvil: It really is just doing its, job, and doesn't see the harm in going back to Gregory House.

!!! Poor Conductor
--> A pompous, but sad, character with a record player for a head. He pretends that the music on the record is his own original work and forces those he thinks are "ignorant" of his musical genius to be transported onto the record to be killed by the record player's needle.

* ButtMonkey: [[AssholeVictim Though it isn't entirely undeserved...]]
* DreadfulMusician: Its not so much that the music he plays is bad, his actual singing voice is terribly annoying. This of course prompts the Dead Bodies in the graveyard to chuck bottles and garbage at him.
* RealityWarper: Can teleport those who listen to the record he plays into one of its groves to be killed by the needle.
* RedEyesTakeWarning

!!! Umbaba
--> A weird creature wearing a tribal mask and cloak. He is used by Gregory in an attempt to get the second guest's soul.

* EarWorm: InUniverse. His song is so catchy, anyone that hears it starts dancing along... which eventually jars the dancer's soul right of their body.
* GoneHorriblyRight: James' interference accidentally gets him and his grandpa's souls jarred out of their bodies, along with the second guest.

!!! Mono Eye Wizard
--> A leader of a cult which tries to make contact with the lord of the world, ignorant to the fact that Gregory is in fact that lord. As his name suggests, he only has a single eye

* AnAxeToGrind: Though he doesn't seem to use it, The Second Guest ''certainly'' does after watching Gregory just standing idly by while they almost burn her body.
* NotSoHarmlessVillain: True his rituals are completely ineffective and are stated to be for fun by Death, but he very nearly entrapped the second guest in Gregory House by burning her body out of frustration.
* TearsOfBlood: when frustrated or upset.

!!! Street Vendor
--> A kid who sells various foods to passengers of the lost train. Though, some of what he sells can be called into question.

* HonestJohnsDealership: On and off, some of his products are iffy (the genetically enhanced peanuts for example) but others can be good (like the chicken he sells at Chicken Farm).

!!! Pig Gentleman
--> A snobby critic on the train who complains about the Evil Chef's cooking.

* AssholeVictim
* BeCarefulWhatYouWishFor: "I want you to serve me the most tender meat you have available!"
* JerkAss: He gets what's coming to him, though...
* LetsMeetTheMeat

!!! Mummy Mama
--> Mummy Dog's mom and Mummy Papa's Wife, who only appeared for a split second at the end of the episode she appears in.

* FailedASpotCheck: she has a ''plant'' that grows from ''her head''. Though the website implies that the reason she doesn't notice this is that the plant is draining her intelligence.

!!! Musha Dokuro
--> An undead samurai warrior who takes in anyone as his lord. though he switches side just as easily if he's beaten.

* HeelFaceRevolvingDoor: His loyalty can change around in a heartbeat, depending on who beats him in a fight.

!!! Fat Chicken
--> A passenger on the Last Train who is ExactlyWhatItSaysOnTheTin.

* BigEater: No one could possibly eat that many boxed lunches- oh, wait.
* LetsMeetTheMeat
* NiceGuy: He genuinely wants to make people happy, but is too naive to think about how his job would do that.
* TooDumbToLive: Who would think just eating and sitting around when you're a chicken, going to a place called ''Chicken Farm'' is a good idea?

!!! Bone Head
--> A skeletal traveler looking for the bones of a legendary dragon that his wife died trying to find.

* AdventurerArchaeologist: Implied to be one, in search for the fossils of the Rainbow Dragon.
* DemBones
* TooDumbToLive: Is far too focused on getting the fossils, and ignores the risk of going into a mine on the brink of collapse.
* TragicKeepsake: wears a locket that the spirit of his wife uses to lead him to the fossils [[spoiler: which leads to his death.]]

!!! Egypetit
--> A living sarcophagus holding the body of the lord of darkness.

!!! Dr. Fritz

* ButtMonkey: ''Hooo'' boy.
--> (after Catherine [[BulletProofHumanShield uses him to block a bullet]]) "Why? Why always me?"