A Kamaitachi who appears in Saishinban GeGeGe no Kitaro and the 1985 anime.

* Archenemy: Has one in the form of the Karasu-Tengu who sealed his powers away.

* Really700: Has lived in Japan since the Meiji restoration.

* SparedByTheAdaption: He does not get eaten Yakanzuru in the 2018 anime, instead he retreats while swearing his revenge.

[[folder:Vampire Elite]]
->'''Voiced by:''' Kosaku Sugiura (1968), Shirou Sano (1996), Tarou Ishida (2007), Creator/RyuseiNakao (2018)

A vampire guitarist who lures his prey with his beautiful serenade.

* EvenEvilHasLovedOnes: He is given a sister in the 1996 anime, a vampire bat named Tina. He loves his sister dearly, [[spoiler: so much so that his goal was to turn her into a vampire as well.]]
* KillItWithFire: Several adaptations depict his death this way, usually burning within a building.
* MindControlMusic: Using his guitar he can mind-control anyone he wishes.
* OnlyKnownByTheirNickname:[[spoiler: Subverted. He is usually known as Vampire Elite, however his real name is Johnny.]]
* SparedByTheAdaptation:[[spoiler: In the 1996 anime, he survives the fire but is reduced back to his vampire bat form.]]

[[folder:La Seine]]
->'''Voiced by:''' Creator/KenjiUtsumi (1968), Creator/NobuoTobita (2018)

A noble vampire who is accompanied by a human named Mammoth.

* AdaptationDyeJob: Normally depicted with dark hair (presumably black), the 2018 anime makes him a blond.
* AgeLift: Is a child in the 2018 anime.
* BlackEyesOfEvil: The 2018 anime gives him black sclerae and he is ''very'' dangerous.
* DiesDifferentlyInAdaptation: [[spoiler:In the 2018 anime, where he and Mammoth managed to escape the burning room, he is finished off by Rei using the fire from the cabin with the use of a fire yokai's power.]]
* KillItWithFire: Is killed by fire in all adaptations he appears in. [[spoiler: Even in his appearance in the 2018 anime, where he escapes the burning cabin, he's quickly finished off by Rei using the powers of a fire yokai.]]
* YouDontLookLikeYou: His appearance in the 2018 anime is drastically different, looking like a child with wild messy blonde hair instead of his usual elegant adult appearance.

!!Chinese Yokai
[[folder:Gahi]]
->'''Voiced by:''' Creator/NaokoMatsui (2007), Creator/HikaruMidorikawa (2018)

A giant floating head yokai from China, normally serves under Qi. Can assume a human form from the 2007 anime onward.

* AdaptationDyeJob: Has blonde hair in the 1985 anime, purple hair in the 2007 anime and light blue hair in the 2018 anime.
* AmbiguousGender: In the 1985 anime, because they didn't assume a human form it's unknown whether they were male or female.
* AnimeChineseGirl: Took this as her human form in the 2007 anime.
* BeautyEqualsGoodness: Averted in the 2018 anime, Gahi at first appear to be this being a nice handsome man who has a girl named Yuna falling into a relationship with him, but his true colors show by the end.
* EvilIsSexy: Both the 2007 and the 2018 anime Gahi uses their human form to seduce people:
** The former doing so to the South Asian Five to aid her in defeating Kitaro.
** The latter to Yuna into helping him collect people for him to eat their souls.
* FlyingFace: The true form of Gahi is a a giant floating head with long flowing hair and a mouth blocked by its large tongue.
* GenderFlip: A female in the 2007 anime, while a male in the 2018 anime.
* LightIsNotGood: The Gahi from the 2018 anime has light blue hair and wears a white Changshan but tricks a girl into helping him consume human souls.
* LongHairedPrettyBoy: In the 2018 anime, Gahi's human form resembles this.
* PointyEars: Has these in the 2018 anime to indicate he's a yokai.
* RedEyesTakeWarning: Gahi has red eyes in both his true and human forms and planned on consuming the souls of humans.
* SealedEvilInACan: In the 2018 anime, Gahi was sealed within a scroll kept by Sunakake-Babaa.
* SoulEating: In the 2018 anime at least.

[[folder:Yasha]]
->'''Voiced by:''' Kosaku Sugiura (1968), Ryuuji Saikachi (1985), Creator/KoichiHashimoto (1996), Creator/RyuzaburoOtomo (2007)

A yokai guitarist who uses his beautiful serenades to lure victims.

* AdaptationDyeJob: Depicted with light-colored hair in the manga and 1968 anime, navy in the 1985 anime, blue in the 1996 anime, green in the 2007 and Hakaba anime and white hair in the 2018 anime.
* BadSanta: In the 2018 anime he possesses people wearing Santa costumes to lure children so he could drain their life force.
* BlackEyesOfEvil: Has black sclerae in the 2007 anime. Not him per se in the 2018 anime, but his hosts gain completely black eyes.
* KillItWithFire: Is killed this way in the 1968 anime.
* MindControlMusic: In the 2007 anime, he was able to mind control an entire crowd into becoming his minions.
* PuppeteerParasite: The 2018 anime gives him more control over his human host unlike past series.
* PrehensileHair: Being made out of hair he is able to entangle his target with his own body.
* RedEyesTakeWarning: His eyes glow red in the 2018 anime.
* SoulEating: His usual modus operandi.
* WouldHurtAChild: His victims in the 1996 and 2018 anime all consists of young children.

!!Other Foreign Yokai
[[folder:Pii and Monroe]]
->'''Pii is voiced by:''' Taimei Suzuki (1971), Hiroshi Otake (1985), Creator/YusakuYara (1996), Creator/{{Chafurin}} (2007), Creator/TakumiYamazaki (2018)
->'''Monroe is voiced by:''' Keiko Yamamoto (1971), Mariko Mukai (1985), Creator/AsakoDodo (1996), Yoko Kawanami (2007), Kyoko Irokawa (2018)

A vampire couple from South Asia.

* VoiceChangling: In the 2007 anime he can perfectly imitate the voices of others.

* AdaptationPersonalityChange: Depending on the series, certain characters are either already good despite originally portrayed as antagonistic or started of bad but reformed later on.

* MeaningfulName: Nearly every yokai's name correlates to what they are, what they do or where they live.

* OurGhostsAreDifferent: Yurei are a class of yokai, born from deceased humans.

* RaceNameBasis: Tends to happen when only an individual of a race, if there are others shown, is the focus. Most prominently are the Yokai of large groups such as Tsurube-Bi, Kijimuna or Bake-Garasu.

* SingleSpecimenSpecies: ZigZagged, depending on the yokai and adaptation, there may only be one individual of a species or an entire race of them. Usual aversions are the Kappas, Kitsune, Tanuki and Tsukumogami.

* LongNeck: Usually appears as a normal woman, she can stretch her neck to a impressive length.

A yokai who eat filth off from the ceilings.

Nurikabe's wife and children that appear in the 2007 anime.

A mountain spirit who echoes people yelling " hello" in the mountain.

A yokai who shouts his name as way to scare humans.

A Yuki-Onna who gets in a relationship with a human boy named Shun.

A yokai haunting the girls bathroom in Mana's school who is friends with Neko-Musume.

* FriendlyGhost: She's friends with the Neko-Musume and the others and doesn't harm the humans of the school she haunts. She also helps evacuate the humans during the Nanashi incident.

* BarefootPoverty: As a poverty spirit, Binbōgami resembles a vagabond with MessyHair, dirty clothes and barefeet.

* JerkassHasAPoint: He's kind of grouchy and brings poverty to the people he haunts, however he point out that money can get over ones head, making them greedy.

* DemolitionsExpert: His primary job in his first appearance was bombing train stations and public areas with disguised bombs, all hand made. He was definitely not the type to lose his cool during this, lest he give his game away.

** His reappearance in the 2018 anime has him bomb a politician car cause he refuses to accept a bribe.

* DrivenToSuicide: [[spoiler: In the finale of the 2018 anime, after all his plans are foiled, rather than live in atonement for his actions and for all the humans and yokai killed, he instead takes his own life by blowing himself up.]]

* EvilOldFolks: Even for a Yokai, he's pretty long lived.

* ElementNumberFive: His seals he places on Mana are based off of the five elements of Wu Xing: Fire, Wood, Earth, Metal and Water.

* GeometricMagic: He can summon yokai with upside down pentagrams.

* WoobieDestroyerOfWorlds: [[spoiler:His parents were a human and a yokai who were killed because their races condemned their MalignedMixedMarriage. Nanashi wasn't even allowed to be born and receive a name from his parents, was never given any love and his spirit was corrupted by the negative emotions of both human and yokai. He turns Mana into a vessel of malice to give himself the form and power to destroy the world. Nezumi Otoko and Mana can understand Nanashi is suffering because neither humans or yokai ever accepted him and thinks the world would be better off without either of them.]]

* AdaptationalBackstoryChange: In the original manga it was said to not be a yokai at all, but a lifeform from deep underground that evolved completely differently from surface dwellers. Other series went with the simpler explanation of it being a yokai, though the 1996 version pulled a left field and claimed it was a space alien.

* RequiredSecondaryPowers: Averted. Unfortunately it is not immune to its own vampire tree seeds, as is the case in the 1968 anime where it is stopped by its seeds when they were planted in it.

* BlowYouAway: His main power, he is able to inhale air to grow larger.

* WeaksauceWeakness: If a human rolls over and chants "Miage-Nyudo, I've see through you", Miage-Nyudo disappears. Mana got him with this twice. The limitation of a human needing to say this is not needed in the 1996 anime, as Kitaro was able to do this after defeating him.

* {{Cephalothorax}}: Tantanbo is giant head that stomps on people.

A yokai woman with a mouth on the back of her head and a pair of snakes as part of her hair, another member of the ylkai castle trio.

* AdaptationDyeJob: Usually portrayed with dark hair colors, such as black (1968 anime), dark blue (1985 & 1996 anime) and violet (2007 anime). However, she has white hair in the 2018 anime.

The last member of the yokai castle trio, can turn his arms into sickles.

* AscendedExtra: Usually restricted to just the being a member of the Yokai Castle trio, the 2007 anime gives him the role of becoming a recurring antagonist under Nurarihyon's group.

* AdaptationDyeJob: Has purple skin in the 1985 anime, normal skin in the 1996 anime and blue skin in the 2018 anime.

* {{Cephalothorax}}: A large human head in the middle of wheel.
* TakenForGranite: He has the power to turn others into diamonds with his breath, [[RequiredSecondaryPowers unfortunately he himself is not immune to this]].

* BroughtDownToBadass:[[spoiler: After Medama-Oyaji breaks the Bell of Dream Control, she's unable to bring people into the Dream World. She's still a yokai however, and her smile at the end of her episode implies she has more up her sleeve...]]
* CanonForeigner: Is exclusive to the 2018 anime.

* RideTheRainbow: An additional use of the bell is to create a rainbow bridge which leads to the Dream World.

!!Seven School Mysteries
[[folder:In General]]

Mischievous yokai who haunts schools and prank humans.

* BeastWithAHumanFace: The Jinmenken that roams the connecting corridors is this.
* LivingStatue: The weeping statue, the laughing anatomical model and the running Kinjiro Ninomiya statues are these.
* ThePianoPlayer: The picture of Beethoven coming out to play the piano.
* NoHistoricalFiguresWereHarmed: Two of the mysterious are this, the portrait of Beethoven and the Kinjiro Ninomiya Statue.
* TheSevenMysteries
* TearsOfBlood: The weeping statue that cries blood in the art room.

[[folder:Hanako-san]]
->'''Voiced by:''' Creator/AyaneSakura (2018)

A yokai haunting the girls bathroom in Mana's school who is friends with Neko-Musume.

* CuteGhostGirl: She looks really cute for a haunting ghost.
* EeriePaleSkinnedBrunette: Fitting since she's a ghost.
* FriendlyGhost: She's friends with the Neko-Musume and the others and doesn't harm the humans of the school she haunts. She also helps evacuate the humans during the Nanashi incident.
* HitodamaLight: Has a pair floating around her constantly.
* PromotionToOpeningTitles: Starting in Episode 50, she along with other Yokai allies to the Kitaro family appears in the intro, invisibly waiting at the train station with Mana.
* ShrinkingViolet: She seems kind of shy. When Medama Oyaji calls her cute, she blushes as though she was embarrassed.

[[folder:Yosuke-kun]]
->'''Voiced by:''' Creator/HisayoshiSuganuma (2018)

Another yokai haunting in Mana's school; stalked Hanako-san before he was defeated by Neko-Musume.

* JerkassHasAPoint: He's kinda grouchy and brings poverty to the people he haunts, however he point out that money can get over ones head, making them greedy.

** Subverted in the fact silver did affect him first time he appeared in the sixth anime, however in his second appearance, since it was a full moon, he was able to no-sell the bullets.

* WouldHurtAChild: His victims in the 2018 anime all consists of young children.

* MixAndMatchCritters: Pii has a long reptillian body, bird feet, a mane and a human hand.