[[folder:Main Characters]]
! Ami Onuki
->Voiced by: Creator/JaniceKawaye


A 16-year-old girl who is allegedly the older of the duo. She is depicted as a peppy, optimistic, and cute girl.

* AnimeAccentAbsence: Though to be fair, she's being voiced by Janice Kawaye (who's Japanese-American), who knows how to speak Japanese.
* AsianAirhead
* AuthorAvatar: When asked if the real Ami is anything like her cartoon counterpart, the real Yumi said "Yes, she is".
* BalloonBelly: She's shown as this in "Taffy Trouble" and "Rock N Roe".
* BerserkButton: Ami gets annoyed when Julie mistakenly calls her Arthur.
* BewareTheNiceOnes: Happens to her sometimes. One example would be in "Collect All 5!".
* CryCute: When she gets very upset.
* CurtainsMatchTheWindow
* TheCutie[=/=]{{Kawaiiko}}: Just look at her, she's just as cute as a button!
* TheDitz
* {{Expy}}: Seemingly of [[WesternAnimation/TeenTitans Starfire]]. To a lesser extent, she's also similar to [[Anime/OjamajoDoremi Doremi Harukaze]].
* FlowerInHerHair
* FriendToAllLivingThings
* GenkiGirl
* GirlishPigtails: As shown in "Team Teen".
* HandyFeet: Playing the drums, as shown in "Ami Goes Bad" and "Mean Machine".
* HeterosexualLifePartners: With Yumi.
* IdolSinger
* KiddieKid: She acts like one sometimes.
* MsFanservice: Granted, she's a child, but you should see what sexy outfits she wore in "The Amazing Kaz-Am".
* MyNaymeIs: Ami (Ah-mi) is often mispronounced as Amy (Ey-mi) in promotions and discussion.
* NeatFreak: This was even brought UpToEleven in "Neat Freak", to the point where she was obsessed with cleanliness.
* NiceGirl
* OdangoHair: She has these to complement her wavy pink hair.
* ThePollyanna: She's willing to looks on the bright side of things and finds a solution to every situation.
* RapunzelHair
* RoseHairedSweetie
* TomboyAndGirlyGirl: The Girly Girl to Yumi's Tomboy.
* ZettaiRyouiki

! Yumi Yoshimura
->Voiced by: Music/GreyDeLisle


A 16-year-old girl who is allegedly younger of the duo. She is depicted as a cynical, sarcastic punk rocker.

* {{Adorkable}}: Especially when she can talk to squirrels.
* AnimeAccentAbsence
* AuthorAvatar: Subverted; when asked if the real Yumi is anything like her cartoon counterpart the real Ami said "No, she is not".
* BalloonBelly: She's shown as this in "Taffy Trouble" and "Rock N Roe".
* BigEater: One episode had her eat a whole lot of hotdogs & [[ExtremeOmnivore several metal horse shoes]]. However, she can only eat large amounts when she's extremely bored.
* CurtainsMatchTheWindow
* CuteLittleFangs: Mostly off-screen and moreso in promotional images.
* DeadpanSnarker
* ExpressiveShirt: The skull on her t-shirt mostly shifts expression to match her own.
* {{Expy}}: Seemingly of [[WesternAnimation/TeenTitans Raven]]. Her hairstyle looks similar to [[Franchise/{{Pokemon}} James]].
* {{Goth}}: Though she is more of the "I Love MCR" than the "I Recite Deep Depressing Poetry" variety.
* GrumpyBear
* HairTriggerTemper: When she's in a bad mood.
* HeterosexualLifePartners: With Ami.
* HiddenDepths: She's able to talk to squirrels.
* IdolSinger
* ItsAllAboutMe: Sometimes she comes off like that. Episodes like "Hungry Yumi" and "Movie Madness" would be the best examples of her selfishness.
* JerkWithAHeartOfGold: She may be sarcastic, grumpy, selfish and violent at times, but she's a NiceGirl at heart and cares a lot about the people she knows (yes, this includes Kaz).
* TheLadette: As a G-rated example. She enjoys ninjas, monster trucks, car crushers, R-rated action movies, and anything else rough and tough.
* LittleMissSnarker
* MsFanservice: Same deal with Ami. Granted, she's a child, but you should see what sexy outfits she wore in "The Amazing Kaz-Am".
* [[OnlySaneMan Only Sane Girl]]: She can be this at times.
** NotSoAboveItAll: But at times, she can also act goofy and immature as Ami and Kaz are, but not to the extent as them.
* TheSnarkKnight
* PeekABangs: Sometimes, mostly during the earlier episodes.
* SkirtOverSlacks
* SuddenlyFluentInGibberish
* {{Tomboy}}
** TomboyAndGirlyGirl: The Tomboy to Ami's Girly Girl.
** TomboyWithAGirlyStreak
* VitriolicBestBuds: Yumi can be disrespectful and threatening to Kaz (and sometimes for a good reason), but despite that, she still likes him and views him either as a father figure and/or a close friend.
* YouGottaHaveBlueHair

! Kaz Harada
->Voiced by: Creator/KeoneYoung


The duo's well-intentioned yet money-grubbing manager.

* AnimeAccentAbsence: Averted, since he has a Japanese accent.
* ButtMonkey[=/=]TheChewToy: Especially where he has to put up with Jang Keng and Tekirai.
* CowardlySidekick: Kaz fits the bill on most occasions.
* CharlieBrownBaldness: With the exception of few spots of white hair around his head.
* {{Expy}}: He's very similar to [[WesternAnimation/SpongeBobSquarePants Mr. Krabs]], because they both have greedy personalities and have a big MoneyFetish, but they mean well. The big difference is that Kaz was never quite so ''evil''.
* EyeGlasses
* FateWorseThanDeath: His self from the year 3000 hates living like a head in a jar because he doesn't have the means to scratch his nose.
* {{Greed}}
* {{Jerkass}}: Most of the time.
** JerkWithAHeartOfGold: Deep down, he cares about the girls and even viewed as a father figure to them, despite betraying them at times. He isn't really a bad guy if you think about it, not to the extent of [[WesternAnimation/SpongeBobSquarePants Mr. Krabs]], at least.
* {{Megane}}
* MiniatureSeniorCitizens
* MoneyFetish: And how!
* ObliviousToLove: In "Stupid Cupids", a younger woman named Courtney fell in love with Kaz after he got a makeover. He doesn't know the first thing about love when it comes to dating her. At the end of the episode, Courtney dumped him saying he's the worst to date. Apparently, Kaz thought [[WhatAnIdiot she was annoying]].
* PasteEater: Yumi repeatedly asks him if he ate paste. By "Cursed", he does INDEED eat paste.
* PermaStubble
* [[TheUglyGuysHotDaughter The Ugly Guy's Hot Daughters]]: Technically, Kaz isn't Ami and Yumi's father (just their manager), but acts like their father figure. The girls are pretty looking and cute compared to him.

[[folder:Recurring Characters]]
! Jang Keng and Tekirai
->Voiced by: Music/GreyDeLisle (Jang Keng), Creator/JaniceKawaye (Tekirai)


Yumi's and Ami's pet cats, respectively.

* AmbiguousGender: Jang Keng.
* ADayInTheLimelight: In a few episodes.
* BalloonBelly: In "Kaz vs Katz".
* [[BitchInSheepsClothing Bitches In Sheep's Clothing]]
* CatsAreMean: They terrorize Kaz for fun when their owners aren't around.
* MeaningfulName: Part of Tekirai's name ("teki") means "enemy" in Japanese, and she is indeed an enemy to Kaz.
* PetHeir: [[DiscussedTrope Discussed]]. In "Run Cat Run", when Kaz starts acting nice to the cats, Yumi jokes that they might have inherited a fortune and Kaz found out about that.
* SitcomArchNemesis: Again to Kaz in the two episodes that focus on them.
* SpellMyNameWithAnS: Jang Keng's name is sometimes mispelt as "Jeng Kang".

->Voiced by: Creator/SandyFox

A six-year-old psycho girl who is obsessed with Ami and Yumi.

* ADayInTheLimelight: "Junior Tapeworm".
* BigBad: In "Kaznapped".
* TheCatCameBack: She reappears again in "Fan Clubs" after her first appearance in "Dis-Harmony".
* {{Catchphrase}}: "I'm your number one fan!"
* GenkiGirl
* GirlyBruiser: In "Junior Tapeworm".
* LoonyFan: Definitely.
* YouAllLookFamiliar: Many clones of her appear as minor enemies in the online game ''Puffy Treasure Island.''

->Voiced by: Creator/KeoneYoung


Kaz's adopted puppy who eats cat food.

* BigEater: Especially cat food.
* EyeGlasses: Just like his owner, Kaz.
* PreciousPuppy: Kaz seems to adore him very much.
* UncattyResemblance: Bears a strong resemblance to his owner, that this has resulted others mistaking him for Kaz.

!The Talent Suckers
->Voiced by: Nathan Carlson (Vladimir and Mitch), Creator/CoreyBurton (Nicolai)

A vampire rock trio from Slovakia that "sucks" people's talents.

* ADayInTheLimelight: "Talent Suckers Return" and "A Grave Mistake".
* DarkIsNotEvil
* EpicFail: In "Talent Suckers Return", they give such a lousy show, the guy who hired them insists they should pay him instead of the other way around.
* FreudianTrio: Nicolai is the Id; Mitch is the Ego and Vlad is the superego.
* FriendlyEnemy: With Ami and Yumi, in later episodes.
* NoCelebritiesWereHarmed: Vlad and Nicolai's voices were based off of Bela Lugosi and Peter Lorre, respectively.
* OurVampiresAreDifferent: Instead of sucking blood from people, they "suck" talent.
* TheQuietOne: Mitch.
* WorkOffTheDebt: Their plot in "Talent Suckers Return".

[[folder:Minor Characters]]

->Voiced by: Creator/LaraJillMiller


A 16-year-old girl who was a former band member and was also Yumi's friend.

* AnimeAccentAbsence: Just like Ami and Yumi, she lacks a Japanese accent.
* BitchInSheepsClothing: Definitely. She was nice to Yumi while purposely torturing Ami. All this happened until she plotted her revenge to get rid of both of them and became the star of the band.
* CompanionCube: She treats her keytar as a sentient being.
* CurtainsMatchTheWindow
* EvilAllAlong
* HiddenDepths: Shown to drive the tour bus and can even lift the girls and all of their instruments with only ''one finger''.
* IdolSinger: She used to be part of the band until Ami kicked her out.
* IJustWantToBeSpecial: The truth is that she just wanted to be loved like Ami and Yumi and get the same attention as them. It isn't never explained how the audience did not notice her that much.
* [[ManipulativeBastard Manipulative Bitch]]
* RememberTheNewGuy
* RunningGag: Mistakenly calling Ami her wrong name, Arthur.
* TheStrategist[=/=]TeenGenius
* TomboyishPonytail
* TomboyishVoice: She has one when she's being insane.
* TownGirls: The neither to Yumi's butch and Ami's femme.
* TroubledButCute
* WhosLaughingNow: "Look at them, keyboard guitar! So much for Puffy Arthur Yumi!"
* [[YouGottaHaveBlueHair You Gotta Have Green Hair]]

!King Chad
->Voiced by: Katie Leigh

Ami and Yumi's former crush in "In The Cards".

* {{Expy}}: He resembles King Bob from ''Westernanimation/{{Recess}}''.
* JerkWithAHeartOfJerk: He dumped Ami (despite winning a duel between her and Yumi) at the end of "In The Cards" just so he can be her in a game called Stu-Pi-Doh!.
* NerdsAreSexy
* YourCheatingHeart: Cheated on Janice to date Ami and Yumi when they were a lot like her in one episode.
* YouthfulFreckles

->Voiced by: Creator/RobPaulsen

Ami and Yumi's childhood friend from Camp Youwannasushi, who wants to be a superhero like his favorite comic book hero, Mangbee Man.


* {{Adorkable}}
* {{Cloudcuckoolander}}: "Here's my card...oh wait. Stand back! I'll give you the card in lightning speed! NGINGINGINGING!"
* IdenticalStranger: As a little kid, he looks quite similar to Mac from ''[[WesternAnimation/FostersHomeForImaginaryFriends Foster's Home for Imaginary Friends]]''.
* ImpliedLoveInterest: Has one on Yumi.
* KidHero[=/=]TheHero
* NiceGuy
* NiceHat
* OriginsEpisode: The episode "Secret Origin" reveals the origin of his superhero obsession.
* PluckyComicRelief
* ThirdPersonPerson: Most of the time, he is this.

->Voiced by: Will Ryan


Ami and Yumi's former bodyguard and friend.

* TheBigGuy
** HugeGuyTinyGirl: The Huge Guy to Ami and Yumi's Tiny Girl.
** BigGuyLittleGuy: The Big Guy to Kaz's Little Guy.
* {{Catchphrase}}: "Unquote."
* DumbBlonde
* TheKlutz
* HulkSpeak
* LawfulStupid


A girl King Chad dates in "Janice Jealous".

* EmotionlessGirl
* MeanCharacterNiceActor: Okay, maybe she isn't mean, but WordOfGod mentions that her voice actor (which has the same name, i.e. Janice Kawaye) is much nicer than her character.

!Eldwin Blair
->Voiced by: Nathan Carlson

A sinister land developer who usually tries to tear down beloved places for his own selfish needs.
* ArcVillain: Of Save the Farm and Arbor Day.
* {{Gonk}}
* ItsAllAboutMe
* RichBastard
* TheReveal: [[spoiler: In Kaznapped, he is a disguise made by Harmony.]]

!Personal. Automated. Lookout.
->Voiced by: Nathan Carlson

* AIIsACrapshoot: His flawed programming on how to neutralize people other than Yumi.
* AntagonisticOffspring: He referred to Yumi as "The Creator".
* BackFromTheDead: In The Genie and the Amp, for reasons unknown.
* FaceHeelTurn: Once he realized he shot Yumi, he became corrupt.
* KillAllHumans: His purpose after his flaw was noticed.
* KilledOffForReal: In The Genie and the Amp.
* LoveMakesYouEvil: His protection for Yumi eventually makes him corrupt once he shot Yumi.
* SplitPersonality: He has one between his natural and corrupted state.
* WouldHitAGirl: He tried to shoot at Yumi multiple times.

!Koi Fish
->Voiced by: Nathan Carlson

* TheNoseless: He is a fish.
* SpiritAdvisor: He was used by the girls to answer their questions.

!Knoble Knight
->Voiced by: Creator/CoreyBurton

Ami's favorite manga hero, who is a majestic knight.

* GreenEyes: Or green eyes with no pupils.
* KnightInShiningArmor: A literal example.
* TheRival: To Decibel Destroyer, [[spoiler: before they team up.]]

!Decibel Destroyer
->Voiced by: Nathan Carlson

Yumi's favorite manga hero, who is a robotic amplifier.

* TheRival: To Knoble Knight, [[spoiler: before they team up.]]

!Mister Master
->Voiced by:

The villain who is against both Knoble Knight and Decibel Destroyer. He also longs for his PHD.

* ArchEnemy: To both Knoble Knight and Decibel Destroyer.
* EvilOldFolks