A list of characters that appear in ''Manga/AcchiKocchi''.

!!Tsumiki Miniwa

->'''Voiced by:''' Creator/RumiOokubo

The lead female of the series who harbors a crush on Io Otonashi.
* AcademicAthlete
* TheAce: At the top of her class, insanely strong, and extremely skilled at video games.
* ActionGirl
* ACupAngst: Don't make fun of her modest bust size. Sakaki and Mayoi both learned this the hard way.
* {{Adorkable}}: Her attempts at getting Io's attention.
* AnimalMotif: If you had no idea, cats.
** CatGirl
* BadassAdorable[=/=]CuteBruiser
* CannotSpitItOut: While her affections for Io [[EveryoneCanSeeIt can be seen from a mile away]], she still has trouble confessing to him properly.
* ClingyJealousGirl: Heavily emphasized in the manga.
* TheComicallySerious: She keeps a completely straight face at all times, even during the most bizarre situations.
* DoItYourselfThemeTune: Rumi Ookubo, her voice actress, does the the ending song as well as the opening with the main cast.
* DoesNotKnowHerOwnStrength: Tsumiki can occasionally display a rather poor grasp on her superhuman strength (compared to the other characters).
* EveryoneCanSeeIt: Everyone except Io, apparently.
* ExpressiveEars: The cat ears she manifests twitch according to her mood.
* {{Expy}}: Of Konota of ''Manga/LuckyStar'', in character design if nothing else.
* HighPressureBlood: Despite trying to have a SugarAndIcePersonality, she frequently erupts with nosebleeds.
* IdiotHair: A huge, [[ExpressiveHair expressive]] one that ''curls''.
* PintSizedPowerhouse: She is ''tiny'', but, as Mayoi can testify, she is insanely strong.
* TheQuietOne: She rarely talks from her side, and usually only utters snide remarks. Her friends usually have an easy time guessing what she's thinking, though.
* RapunzelHair: Due to her height, Tsumiki's hair practically sweeps the floor.
* SingleTargetSexuality: Io.
* SproutingEars: A pair of cat ears pop up on her head quite frequently.
* StraightManAndWiseGuy: The Straight Man to Mayoi's Wise Guy.
* SuperStrength: Inexplicably, Tsumiki can lift a boulder of a snowball and hurl it with easy.
* TokenMiniMoe: While Hime is nearly as adorable, Tsumiki is by far the shortest character in the series.
* TranquilFury: Her face rarely shows the rage she feels.
* {{Tsundere}}: Flat-out stated as one. She actually manages to be ''both'' types at the same time.
* YouGottaHaveBlueHair
** MulticoloredHair: Tsumiki's hair seems to be composed of two shades of blue.

!!Io Otonashi
->'''Voiced by:''' Creator/NobuhikoOkamoto

The leading male of the series. Is [[ChasteHero unaware of]] [[ObliviousToLove Tsumiki's feelings]] toward him.
* AcademicAthlete
* TheAce: About on equal footing as Tsumiki. He's pretty much good at everything he touches.
* BlindWithoutThem: Io cannot see without his glasses very well and needs to be close to others to make them out.
* BerserkButton: In the manga, when Sakaki says something stupid (normally perverted things). All-around hates mosquitoes.
* ChasteHero: In a series where cute things are happening left and right, Io just ''blushing'' is considered an oddity.
* ChekhovsSkill: His pen twirling schtick later allows him to [[SpinToDeflectStuff deflect snowballs]].
* CluelessChickMagnet: The reason for his ChasteHero status.
** IDidntMeanToTurnYouOn
* FriendToAllLivingThings: But not mosquitoes.
* TheHeart: To his confusion, everyone in the group looks up to and loves him.
* HeavySleeper: Io once slept through Tsumiki fondling his head rather loudly.
* HouseHusband: The man can cook, which is often in an EngagingConversation. He can also sew.
* IdiotHair
* ImprobableAimingSkills: He uses sticks to catch fish in the first cabin episode, thinking it's impossible. Cue the fishes floating dead in the water. He also took out mosquitoes with a toothpick.
* IncorruptiblePurePureness: Part of his ParodySue shtick, Io is spotlessly clean.
* LikeBrotherAndSister[=/=]PlatonicLifePartners: How Io views Miiko.
* LockedOutOfTheLoop: Which is very unsuprising, since ''everyone'' knows Tsumiki's in love with him, and he never notices at all. Especially when people are being subtle about it
* {{Megane}}: Combine that with StoicSpectacles.
* NerdsAreSexy
* NotSoAboveItAll: Io will frequently get caught up in whatever competition Sakaki starts, assuming they aren't on the same side.
* ObliviousToLove: More emphasized in Chapter 4 when he doesn't know what Miiko is talking about when she specifically says being an "Ally to a maiden in love". But finally seems to have caught on, during the end of Episode 11.
* ParodySue: Io's particular character trait is being irresistible to girls (and [[ObliviousToLove clueless about it]]) and incredibly competent in everything the cast has to do (except technology which is Mayoi's field) but it's usually (and [[TropesAreTools effectively]]) PlayedForLaughs against Sakaki failing miserably.
* RedOniBlueOni: The blue to Sakaki's red.
* [[SexySantaDress Sexy Santa Suit]]: The ladies sure didn't mind Io in a Santa suit during Episode 10.
* SpiritedCompetitor: Io loves a good challenge.
* TheStoic: He's this in the anime, full-blown.
** NotSoStoic: Anytime he [[OoCIsSeriousBusiness shows any emotion is noted]]. More common in the manga.
* SupremeChef
* TouchOfDeath: Despite Sakaki's IronButtMonkey status, Io can disable him with a light tap. However, this may be due to MinorInjuryOverreaction by the former.
* UnwantedHarem: Since he's completely ObliviousToLove in this regard, he wouldn't notice. And Tsumiki goes ClingyJealousGirl mode when girls are thinking about him, touching him, or considering going out with him.

!!Mayoi Katase
->'''Voiced by:''' Creator/HitomiNabatame

The MadScientist of the group.
* ActionGirl: But not to Tsumiki's level.
* AmusingInjuries: Mayoi gets a lot of abuse, not that she doesn't deserve it.
** TheChewToy: Full throttle.
* BerserkButton: Don't mention her weight.
* BirdsOfAFeather: She is suggested to get along well with Sakaki because of their similarly mischievous natures.
* BlindingBangs
* BunnyEarsLawyer: Has a field of technology, even making a snowball cannon and maker.
* CloudCuckoolander: Mayoi seems to prioritize having fun over anything logical or practical. This often gets her in trouble with Tsumiki.
* CrazyPrepared: She tends to have some kind of invention for every occasion, most of them end up being completely useless.
* TheGadfly: Most of what comes out of her mouth is deliberately trying to provoke a reaction out of someone, usually Tsumiki.
* GadgeteerGenius: She's very good with machinery and even constructs a few gizmos.
* GenkiGirl: She's always upbeat and positive, in stark contrast to Tsumiki.
* [[spoiler:HiddenBuxom]]
* HotBlooded
* IronButtMonkey: Mayoi had a ''frisbee thrown at her neck'' and manages to recover. As well as her face at the receiving end of a wall.
* LabcoatOfScienceAndMedicine: She's always wearing one.
* LargeHam
* LethalChef
* MadScientist
* PerpetualSmiler
** CatSmile
* ShipperOnDeck: Ships Tsumiki and Io.
* SpiritedCompetitor
* StraightManAndWiseGuy: The Wise Guy to Tsumiki's Straight Man.
* VerbalTic: Despite the strength of Tsumiki's [[AnimalMotif cat traits]], in the anime ''Mayoi'' is the one who meows in every other sentence.

!!Sakaki Inui
->'''Voiced by:''' Creator/ShintaroAsanuma

Io's best friend. In stark contrast to Io, Sakaki is upbeat and can be rather perverted.
* AlwaysSecondBest: Sakaki's dynamic with Io. He's the only character who actively tries to one-up the resident ParodyStu and they're actually shown to be evenly matched whenever Sakaki isn't getting horribly maimed.
* AmusingInjuries: At least once per scene.
** TheChewToy: Painful things kind of just happen to him all the time.
* BestServedCold: In Episode 12, Sakaki finally gets his revenge on Mayoi for the frog chocolate incident.
* BirdsOfAFeather: He is suggested to along well with Mayoi because of their similarly mischievous natures.
* BromanticFoil: To Io.
* BrownBagMask: Episode 10.
* CloudCuckoolander: His thought process is rather strange.
* CluelessChickMagnet: Not at the same level as Io, but it's there in the manga.
* HotBlooded: He screams wildly even when he's playing video games.
* IronButtMonkey: Sakaki can take a considerable amount of punishment and be fine the next scene (or page).
* {{Metaphorgotten}}: Prone to making nonsensical metaphors/analogies.
* RedOniBlueOni: The red to Io's blue.
* SpiritedCompetitor: Loves competing against Io, and actually puts up a good fight most of the time.

!!Hime Haruno
->'''Voiced by:''' Creator/KaoriFukuhara

One of the female leads of the group. And the only one who isn't an ActionGirl.
* AudienceSurrogate: Hime's behavior is meant to be identical to the series' target audience's: sheer adoration of everything cute, but perhaps with a little less blood.
* BerserkButton: Don't ever tease her about her weight.
* ChekhovsGunman: One of their games in the manga involves a doll held by her team. Naturally, she gets captured by Sakaki and Mayoi's team. But, she's the reason why Io's team wins in Chapter 41.
* CuteClumsyGirl: Hime kind of falls down a lot, doesn't she?
* CutenessOverload: Frequently suffers nosebleeds when she witnesses something adorable.
* TheDitz: It's so bad that she outright admits and accepts it.
* TheEveryman: If you disregard the fact that she has [[OverdrawnAtTheBloodBank more erythrocyte reserves than a blood bank]], Hime is the closest thing this show has to a normal person.
* ForgetfulJones: She is capable of remembering that it will rain, but will forget to bring an umbrella every time.
* GracefulInTheirElement: A disaster on land. A natural on ice rinks.
* HairDecorations: What appears to be bows.
* HighPressureBlood: Has erupted more {{Nosebleed}}s than Tsumiki, and that's saying something.
** She actually gets a nosebleed so powerful that it propels her like a jet while she's ice skating.
* TheLoad: Acknowledges her role as this depending on games the group plays. She ends up being a valuable player in Mayoi and Sakaki's "Capture the Doll" game.
* [[NiceGuy Nice Girl]]: She's the only one who is always concerned by all the slapstick Sakaki and Mayoi get.
* PurityPersonified: Hime does not have a mean bone in her body, and is the most innocent of the friends.
* RunningGag: Passing out from blood loss.
* WeightWoe: Rather insecure about her weight.

!!Kana Miyama
->'''Voiced by:''' Creator/HiromiKonno

One of the few friends the group interacts within the story
* CloudCuckoolander: Quite blatantly air-headed. She seriously thought squirting onion juice into someone's eyes wouldn't hurt them.
* GenkiGirl: Usually her default mode.
* MadeOfIron: She effectively plows through a wooden trap made by Mayoi.
* [[YouGottaHaveBlueHair You Gotta Have Green Hair]]
** MulticoloredHair: It's composed of two shades of green.
* [[ThoseTwoGuys Those Two Girls]]: With Saki.

!!Saki Sakimori
->'''Voiced by:''' Creator/NatsumiTakamori

* AlliterativeName
* AnimeHair: A portion of her hair forms vaguely cat ear-like shapes.
* TheGadfly: Enjoys teasing her friends for fun, especially Kyouya.
* [[ThoseTwoGuys Those Two Girls]]: With Kana.

!!Kyouya Saibara
->'''Voiced by:''' Creator/TsubasaYonaga

* ButtMonkey: Tends to be bullied by Saki.
* PhraseCatcher: Some variation of "You're creepy" from Saki.
* SatelliteCharacter: To Saki. Most of his tropes tend to revolve around her.
* ShipTease: It's suggested Kyouya has a crush on Saki, though he adamantly denies it.
* {{Tsundere}}: A very mild Type B. He's usually a swell guy until anything involving Saki is involved.

!!Kikue Sakuragawa
->'''Voiced by:''' Creator/JunkoIwao

* ChristmasCake: Still looking for a boyfriend.
* MulticoloredHair: Silver with shades of purple.
* SenseiChan

!!Miiko Inui
->'''Voiced by:''' Creator/YukoMinaguchi

Sakaki's older sister who owns a cake store, the Hatch Potch.
* CoolBigSis
* EyesAlwaysShut
* LikeBrotherAndSister[=/=]PlatonicLifePartners: How Io views her
* ShipperOnDeck: Her line towards Tsumiki calling herself an "ally to a maiden in love" suggests this.
* YamatoNadeshiko: A textbook example.