!Mirumo (Mirmo)
->Voiced by: Creator/EtsukoKozakura (JP), Richard Nicholls (EN)

The prince of the Muglox world and Kaede's partner.

* ArrangedMarriage: To Rirumu.
* DubNameChange
* JerkWithAHeartOfGold
* TrademarkFavoriteFood: Chocolate.

!Rirumu (Rima)
->Voiced by: Mayuko Omimura (JP), Loretta Jafelice (EN)

Mirumo's fiancee, of whom he is terrified of. Setsu's partner.

* ArrangedMarriage: To Mirumo.
* DoesNotKnowHerOwnStrength: To Mirumo's chagrin.
* DoggedNiceGirl: To Mirumo.
* DubNameChange
* LethalChef
* LoveFreak
* TrademarkFavoriteFood: Cream puff.
* ShipperOnDeck: She chose Setsu as her partner because she knew of Kaede's crush on him.
* {{Tsundere}}: Type B.
* [[YouGottaHaveBlueHair You Gotta Have Green Hair]]

!Yashichi (Yatch)
->Voiced by: Yukiji (JP), Eric Myers (EN)

Mirumo's rival, a wannabe-ninja. Azumi's partner.

* BigBrotherMentor: To his partners, Sasuke and Hanzo
* ButtMonkey: and borderline [[TheChewToy Chew Toy]], as it's part of his popularity ; the other part being the open kindness he shows to his disciples Sasuke and Hanzo, and the hidden one to other characters.
* DubNameChange
* HeroicSacrifice: [[spoiler: tries to use a forbidden magic that will have him TakenForGranite forever, so that Azumi can get a single wish of whatever she wants, hoping she'll wish to get a boyfriend. [[CrowningMomentOfHeartwarming Learning this, Azumi, moved, wishes for Yashichi to turn back to normal instead.]]]]
* HighlyVisibleNinja: Arguably.
* PantyThief
* PunchClockVillain: He may be Mirumo's rival, but he's basically under orders : when not in mission, he gets along rather well with other characters.
* SarcasticDevotee: To Azumi.
* TheRival: Of Mirumo
* TrademarkFavoriteFood: Karinto.

!Murumo (Mulo)
->Voiced by: Creator/RieKugimiya (JP), Emma Tate (EN)

Kaoru's partner and Mirumo's little brother.

* DeliberatelyCuteChild: He knows he's adorable, and he knows he can use it to get what he wants.
* TrademarkFavoriteFood: Marshmallows.

->Voiced by: Kurumi Mamiya (JP), Creator/JenniferHale (EN)

Koichi's partner, who has a crush on Murumo.

* NiceHat: One of the reasons she has a fanbase.
* {{Tsundere}}


Ryo's partner and one of Mirumo's classmates in the anime.

* DemotedToExtra: Ryo never appeared in the anime, and therefore Moon is just another one of Mirumo's classmates
* TheQuietOne
* TheStoic: Most of the time.
** NotSoStoic: He can actually smile, but doesn't because it comes off more as a leer.

!Kaede Minami (Katie Minami)
->Voiced by: Creator/MaiNakahara (JP), TabithaStGermain (EN)

* AccidentalKiss: [[spoiler: With Sumita.]]
* BettyAndVeronica: The Betty to Azumi's Veronica.
* DoggedNiceGirl: To Yuki.
* DubNameChange
* DudeMagnet: Kaoru and Koichi are both in love with her. Setsu eventually realizes he loves her too.
* ExtraordinarilyEmpoweredGirl
* GirlishPigtails
* NiceGirl: She's sweet and friendly to everyone.
* SavvyGuyEnergeticGirl: Energetic Girl to Setsu's Savvy Guy.

!!Setsu Yuuki (Dylan Yuuki)
->Voiced by: Yukitoshi Tokumoto (JP), SamuelVincent (EN)

* BettyAndVeronica: The Archie to Kaede's Betty and Azumi's Veronica.
* CuteBookworm: Well, many girls find him cute, especially Kaede and Azumi.
* DubNameChange
* OnlySaneMan: Easily the sanest of the main characters, humans or not.
* TheQuietOne: Usually quiet and silent, especially at the beginning.
* PickyEater: Does not like green peppers (though it's more like he's afraid of them).
* SavvyGuyEnergeticGirl: Savvy Guy to Kaede's Energetic Girl.

!Azumi Hidaka
->Voiced by: Hitomi (JP), Larissa Wolcott (EN)

* BettyAndVeronica: The Veronica to Kaede's Betty.
* CharacterExaggeration: Arguably in the anime where she appears to have close to no other character outside liking Setsu and being Kaede's rival.
* ClingyJealousGirl: [[spoiler: But finally admits defeat and let her love go when Kaede and Setsu become an OfficialCouple.]]
* HairTriggerTemper: Tends to be aggressive and short-tempered, especially when Kaede is around Setsu.
* JerkWithAHeartOfGold
* NoblewomansLaugh: Sometimes.
* RapunzelHair: A beautiful girl with very long black hair.
* TheRival: Kaede's for Setsu's affections.
* SpoiledBrat

!Kaoru Matsutake (Kyle Matsutake)
->Voiced by: Creator/SoichiroHoshi (JP), Creator/BlakeShepard (EN)

* ChickMagnet: Attracts an army of women. He ain't pleased.
* DubNameChange
* HopelessSuitor: To Kaede.
* [[ThePresidentsDaughter The President's Son]]: The Matsutake family owns a ridiculously large number of businesses, which come in handy a lot of times.
* StalkerWithACrush: To Kaede.

!Koichi Sumita
->Voiced by: Tetsuharu Ohta (JP), Braden Hunt (EN)

* AccidentalKiss: [[spoiler: With Kaede.]]
* NiceGuy
* ShrinkingViolet: He's a very shy person.

!Ryo Sanada

A tomboy who is partners with Moon.

* ChuckCunninghamSyndrome: In the anime.
* LadyLooksLikeADude
* TheRival: To Kaede, for Setsu [[spoiler: after Azumi stops pursuing him in the manga.]]

[[folder:Other Humans]]

!Etsumi Kido

!Mr. Tsuchida


!Momo Umezono


!Momiji Minami
[[folder:Mirumo's Friends and Classmates]]










[[folder: The Fairy Ninjas]]

[[folder:Warumo Gang]]

!The whole gang in general

* GoldfishPoopGang
* NumericalThemeNaming: Ichirou (1), Jirou (2), Saburou (3), Shirou (4), and Gorou (5)






[[folder:Other Villains]]



[[folder:Gaia Tribe]]





[[folder:Manga Only Characters]]
!Ryo Sanada

A tomboy who is partners with Moon.

* ChuckCunninghamSyndrome: In the anime.
* LadyLooksLikeADude
* TheRival: To Kaede, for Setsu [[spoiler: after Azumi stops pursuing him in the manga.]]
* Tomboy