[[folder:Aria Company]]

'''Akari Mizunashi'''

-->'''Voiced by:''' Erino Hazuki (Japanese), Creator/VeronicaTaylor (English)

The main character. An immigrant from Japan, Manhome who comes to Aqua to become an undine. Normally shown as a very cheerful person. [[WeirdnessMagnet Has a strange tendency to draw supernatural phenomena to her.]]
* CatchPhrase:
** She frequently pronounces "hai!" as "hahi!".
** She also tends to go "Ehhhh?" a lot, especially in response to Aika's own admonishing CatchPhrase. Aika immediately knows something is wrong when Akira doesn't respond with that.
** In one episode/chapter, Aika claims Akari tends to get distracted and say "Ah, suteki!" which means "oh, it's wonderful," or more contextually, "Ooh, that's neat!" but this isn't really shown in practice, though.
* CloudCuckooLander
* DoesNotLikeShoes: Even though she has galoshes, Akari prefers to go barefoot when she's wading through the waterlogged streets, mostly because she enjoys the cold sensation of the water and the stone paving under her feet. Should one galosh slip off in the water, she's more inclined to pull the other one off and leave them off.
* FriendToAllLivingThings: Not only does she befriend nearly every human she meets, but several animals and even a snow bug as well. She even feels sorry for some chocolate candies that won't get eaten because they got dropped onto the ground! Cranked {{up to eleven}}, even her gondola (in the form of an elderly man) put an umbrella over her, and if you believe her idea of who Cait Sith is, the entire spirit world of Aqua looks after her. In short, friend to all living things, and many NON-living things to boot.
* GenkiGirl
* LoveFreak: Probably everyone's trait, but it's especially apparent with Akari.
* RapunzelHair: Her "sideburns" get so long by the epilogue that she's able to loop them back around into a ponytail! How she doesn't catch her oar in those loops is anyone's guess.
* RomanticTwoGirlFriendship: Her relationship with Alicia certainly has elements of this, which culminates in the ''Arietta'' {{OVA}}.
* RoseHairedSweetie: The poster girl of the trope. Her pink hair matches perfectly with her cheerful, sweet and naive personality.
* SheIsAllGrownUp: In the anime she's the only one out of her and her two friends that's shown after reaching adulthood. In the manga she's the last one to be shown.
* ShipTease: With Akatsuki, but also [[RomanticTwoGirlFriendship with Alicia]], so much that Alicia's unexpected [[spoiler:[[LastMinuteHookup marriage]]]] outraged quite a few {{yuri fan}}s.
* TearfulSmile: When Alicia "disappeared" after she told Akari she [[spoiler:planned to retire.]]
* WeirdnessMagnet:
* WideEyedIdealist:
* YouGottaHaveBlueHair: Her hair is pink.

'''Alicia Florence'''

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

One of the three Water Fairies, Akari's tutor. Current manager of ARIA Company. She's known by the title "Snow White", and is currently the most popular undine in the city.
* ButNowIMustGo: [[spoiler:After Akari becomes a prima, she suddenly reveals that she'll leave Aria Company.]]
* CatchPhrase: "Ara ara" ("well well"), usually followed by a giggle, emphasizing her easy-going nature. They note she'd more likely say that than scold someone. They're right.
* LastMinuteHookup: Gets married in the last chapter/episode with little/no foreshadowing.
* OneeSama: So very much.
* RapunzelHair
* RomanticTwoGirlFriendship: With Akari
* ShipTease: With Akari, most prominently in the ''Arietta'' {{OVA}}.
* StealthHiBye: Does this a from time to time, though it usually happens in the later chapters rather than the earlier ones.
* {{Troll}}: As expect of this show, it is played ''very'' lightly and not malicious at all, but she has her moments.

'''Akino Ametsuchi'''

-->'''Voiced by:''' Yoshiko Matsuo

Better known as Grandma. Legendary Undine and the founder of ARIA Company. Originally she's from Himeya Company, but break off after meeting with President Aria. Currently lives in countryside.
* AlliterativeName: '''A'''kino '''A'''metsuchi.
* IWasQuiteALooker: [[http://www.mangafox.com/manga/aria/v09/c045.5/3.html She aged]] [[http://www.mangafox.com/manga/aria/v09/c045.5/4.html very badly]], [[http://www.mangafox.com/manga/aria/v09/c045.5/8.html to say]] [[http://www.mangafox.com/manga/aria/v09/c045.5/17.html the least]].
* MiniatureSeniorCitizens: Shrunk considerably between her working as an undine and now.

'''Ai Aino'''

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

Originally an anime-only character, Ai is Akari's customer in the first episode of the anime (in place of an old man in the equivalent manga story), and serves as the character that Akari corresponds with (in place of her unknown readers in the manga). Gets CanonImmigrant treatment in the last chapter of the manga.
* AlliterativeName: '''Ai'''no '''Ai'''
* CanonImmigrant
* CheerfulChild
* HairDecorations: A big, red ribbon.
* LastEpisodeNewCharacter: In the manga.
* SheIsAllGrownUp: While she doesn't appear to physically grow during the 6 earth years that the series covers, that changes in the epilogue and the ''Avvenire'' OVA's.
* WeirdnessMagnet: Appears to be following in Akari's footsteps of attracting the supernatural to her, [[LampshadeHanging lampshaded]] by her companions.

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

Grandma's apprentice before Alicia. Left the company after Alicia became Prima. Currently has a family.

'''President Aria Pokoteng'''

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

ARIA Company's president. Can be considered as a [[BSideComics B Side]] main character. A Martian cat that Akino met, and with whom she founded ARIA Company.
* CatSmile
* TheLoad: Even his focus episode is based around how much he gets in the way.
* ReallySevenHundredYearsOld: Stays with the company for 20 years and he doesn't look any different at all.
* RidiculouslyCuteCritter


[[folder:Himeya Company]]

'''Aika S. Granzchesta'''

-->'''Voiced by:''' Creator/ChiwaSaito (Japanese), Creator/JessicaCalvello (English)

Daughter of the owner of Himeya and its heir. Akari's first friend on Aqua. Has a crush on Alicia and later Al.
* GirlishPigtails
* HairDecorations
* ImportantHaircut: [[spoiler:She used to have long hair, as she wanted to be like Alicia. However, it got burned, and she had to cut it short. At the same time, she realised it was better she was her own person, though she still looks up at Alicia as a role model]].
* JerkWithAHeartOfGold: Though a very light version.
* MadLibsCatchPhrase: She often says something like "__________ is/are not allowed!". Most commonly, "Embarrassing remarks are not allowed!", or in the original Japanese, "Hazukashii serifu kinshi!", often several times an episode.
* MeaningfulName: Grantchester is a village upriver of Cambridge, England, and a popular destination for summer punting trips.
* MoodSwinger: Aika can swing between [[GenkiGirl energetic]], [[TheStraightMan down-to-earth]], lovestruck and crybaby pretty convincingly.
* StalkerWithACrush: In the beginning of the series, she exhibits this toward Alicia.
* YouGottaHaveBlueHair
* ZettaiRyouiki: Only once in the {{anime}}.

'''Akira E. Ferrari'''

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

One of the three Water Fairies, Aika's tutor. She's known by the title of "Crimson Rose" for her conversation skill with customers. Tomboyish enough that she can be considered as TheLadette (especially with Akatsuki mistaking her as a boy when they're children).
* AloofDarkHairedGirl: She is tall, beautiful, has a number of admirers, [[EvenTheGirlsWantHer mostly female]], and behaves in a composed lady-like manner. In front of customers, anyway.
* BadassNormal
* CantHoldHerLiquor
* CatchPhrase: She often shouts "Suwa!" when the Undines practicing make a mistake.
* CurtainsMatchTheWindow
* DrillSergeantNasty: Accused of being one, but she's really not ''that'' bad... maybe.
* HardWorkHardlyWorks: Averted. The only reason she's able to be one of the Water Fairies is because she works really hard. As she said, she has no notable talents like her friends Alicia or Athena have, so hard work is all she can do to make up for it.
* TheLadette: Except the drinking part -- she can barely hold liquor, especially compared to Alicia, who can hold massive amounts.
* RapunzelHair

'''Ayumi K. Jasmine'''
-->'''Voiced by:''' Creator/RyokoShiraishi

One of the trainees that Akari met when she works at Traghetto. Quite a cheerful person.
* IJustWantToBeNormal: Well, more normal. She doesn't even want to be a Prima at all.

'''President Hime M. Granzchesta'''
-->'''Voiced by:''' Creator/KaoriMizuhashi

Himeya's president. A cat from Manhome. Quite aloof. President Aria has a crush on her.
* {{Tsundere}}


[[folder:Orange Planet]]

'''Alice Carroll'''

-->'''Voiced by:''' Creator/RyoHirohashi (Japanese), Tarrah Tisch-Wallace (English)

A trainee for Orange Planet. Is considered to be a prodigy because of her gondola skills despite the fact she is still in middle school when she is recruited. A real DeadpanSnarker.
* AliceAllusion
* CatchPhrase: She likes to prepend "dekkai" ("huge") to things. This can be translated as "really" or "quite" in most cases.
* ChildProdigy: Nearly flawless rowing skills even when still a ''pair''. [[spoiler:She also becomes a Prima before her seniors Akari and Aika.]]
* DefrostingIceQueen: She starts out as this, but mellows out very quickly.
* GrumpyBear
* InnocentProdigy: Although hidden under her antisocial personality and her status as a prodigy, she's still shown to have an adorably childlike naivety at times.
* LittleMissSnarker
* SelfImposedChallenge: She likes to go home from school in various creative ways, such as kicking a rock along the path or only walking on shadows. These often cross into JustAKid territory.
* ShipTease: With Woody (only in the manga).
* ShoutOut: [[WordOfGod Is]] to Creator/LewisCarroll and ''Literature/AliceInWonderland''
* SugarAndIcePersonality: Quite antisocial on the surface.
* WiseBeyondTheirYears: Although even with that, she's still 14 and it shows.
* ZettaiRyouiki: In her school uniform.

'''Athena Glory'''

-->'''Voiced by:''' Creator/TomokoKawakami (Japanese), Michele Knotz (English)

One of the three Water Fairies, Alice's tutor. She's known by the title of "Siren" for her beautiful singing voice. Very clumsy (but see below).
* AmbiguouslyBrown
* CloudCuckooLander: Even more so than Akari.
* CuteClumsyGirl
* GeniusDitz / ObfuscatingStupidity: Is actually capable of not making mistakes, but usually doesn't bother when she's not on the job because it's "too tiring".
* MeaningfulName
* RapunzelHair: While she alone of the three Water Fairies has short hair, in the DistantFinale she grows it out.

'''Atora Monteverdi'''
-->'''Voiced by:''' Creator/HoukoKuwashima

One of the trainees that Akari met when she works at Traghetto.

'''Anzu Yumeno'''
-->'''Voiced by:''' Creator/KanaAsumi

One of the trainees that Akari met when she works at Traghetto. Very shy.
* {{Determinator}}: Has failed the Prima exam several times, but hasn't given up yet.

'''President Maa'''
-->'''Voiced by:''' Creator/AkenoWatanabe

Orange Planet's president. Originally found as a stray by Alice, who picks [[YourTomcatIsPregnant her]] up to take care of. Has a habit of biting President Aria's belly.
* YourTomcatIsPregnant: Was thought by Alice to be a male cat until the vet reveals this fact. Without the pregnancy, though.


[[folder:Other characters]]

'''Akatsuki Izumo'''

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

He works in one of the floating islands as a Salamander, controlling weather on the planet. Has a crush on Alicia (who claims to assume instead it's on Akari). Akari's first customer.
* {{Bishounen}}
* ShipTease: with Akari
* StalkerWithACrush: Mild version, mind you.

'''Ayanokohji Udo the 51st'''
-->'''Voiced by:''' Creator/YujiUeda

Better known as Woody, he works as Sylph, an airbike courier delivering goods in a city without streets. Has quite a bad sense of direction.
* NoSenseOfDirection: His first appearence have him lost a map and need Akari's help to navigate the city.
* {{Transplant}}: It's either this or he's descendant from Ayanokohji Udo from Amano's earlier work ''RomanClub'' considering that they have same name, look, and even personality.

'''Albert Pitt'''
-->'''Voiced by:''' Creator/AkenoWatanabe

Working as a Gnome, people who works in gravity control system underground. Aika has a crush on him. [[OlderThanTheyLook Older than he looks]].
* DontExplainTheJoke: He always does when he makes an-
* {{Expy}}: It's almost impossible to not compare his appearance with Literature/HarryPotter.
* OlderThanTheyLook: Looks like a cute little boy, even though he's 18.
* {{Pun}}: He often makes "old man" jokes with these. They're so old (and originally from Manhome) that he has to explain them every time.
* SoapOperaRapidAgingSyndrome: The only logical explanation for him growing at least a foot taller at the end of the final episode but before the timeskip epilogue.
* StealthHiBye: Happens every now and then.

'''Anno Namihei'''
-->'''Voiced by:''' Motomu Kiyokawa

Better known as Mr. Postman, as Akari calls him. Works for the Neo-Venizia post office and gives Akari first trip in gondola. His name is not revealed until near the end of the series.
* EveryoneCallsHimBarkeep: An {{Omake}} lampshades this, with everyone calling him not by his name, even though he has a nametag.
* EyesAlwaysShut: The only time he opens them is when Akari narrowly avoids crashing, seen [[http://www.mangafox.com/manga/aqua/v01/c001/30.html here]].

'''Cait Sith'''

Mysterious MegaNeko that appears throughout the work, especially when the supernatural is involved, to Akari especially. Is the King of the Cats of Neo-Venezia, named after the king of the cats of Scottish folklore, and it is strongly suggested he is a guardian spirit of Aqua.
* BigDamnHeroes: [[spoiler:Saves Akari from the ghost.]]
* MegaNeko