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[[caption-width-right:350:Luka, Rin, Len and Miku... [[LoadsAndLoadsOfCharacters we couldn't fit them all in if we tried.]][[note]]And, trust us, we ''did''.[[/note]]]]

Vocaloids (from the words "vocal" and "android") are music synthesizing programs based on real human voice samples and technology created by the Yamaha Corporation. Think SyntheticVoiceActor meets AutoTune. There are currently [[LoadsAndLoadsOfCharacters 63]] vocaloids (Rin and Len count as one product instead of two, as do anon & kanon and ZOLA PROJECT); and fans have created personalities for each character based on official art (some don't even have official ''character design'') and voice. Fans have also created characters based on official releases, such as Neru Akita and Haku Yowane.

To use a Vocaloid, one simply has to type in the lyrics of the song of their choosing as well as the melody for said song, although a great deal of fine-tuning is usually necessary to have the result sound natural. Vocaloids have become so popular that an official unofficial manga adaptation, ''Manga/HatsuneMix'', was created, telling the trials and tribulations of the Crypton-produced Vocaloid family: Meiko, Kaito, Miku Hatsune, Rin and Len Kagamine, and Luka Megurine.

''Vocaloid'' took major steps to becoming SeriousBusiness[[note]]On the Internet, anyway. Even with it extending into the real world, Vocaloid is still a niche thing, even to Japanese who identify as {{Otaku}}, with several of them not even knowing there are more Vocaloids than Miku Hatsune[[/note]]. Flagship character Miku Hatsune has become a fully-fledged VirtualCelebrity, with an album featuring her work (composed by synthesizer band ''Supercell'') nearly topping the Japanese music charts at No.2, and Miku herself putting on a ''live concert'' at Animelo Summer Live 2009. (Her "live" performances involve the same tech used for the {{Music/Gorillaz}}' live shows and the [[TupacShakur 2Pac]] hologram from Coachella 2012.) In the 2010 Concert, Rin, Len, and Luka made debuts with [[http://www.youtube.com/watch?v=CS-mPtF7yDY&feature=related even better renderings]].

Toyota also began an ad campaign for their 2011-model Corolla, [[CharacterCelebrityEndorsement starring]] [[http://www.youtube.com/watch?v=E15PE7iGT0U Miku herself]]; it was subsequently revealed that Toyota sponsored Miku's first overseas appearance -- a live concert in Los Angeles at Anime Expo 2011.

Vocaloid has proven itself a media juggernaut, capable of kickstarting whole multimedia projects. For example, ''Music/BlackRockShooter'', ''Franchise/KagerouProject'', and ''Franchise/MikaguraSchoolSuite'' all started as Vocaloid songs and expanded into light novels, manga, anime, and in the case of BRS, [[VideoGame/BlackRockShooterTheGame her own spinoff video game.]] Other popular songs also got multimedia adaptations, such as [[http://rin-kokoro.com/musical ''Kokoro"]] and "Cantarella", which both got musicals, and the ''Franchise/EvilliousChronicles'', best recognized by its flagship song "Daughter of Evil", also got a ScreenToStageAdaptation and a manga. "Sakura Rain" even got a live-action [[TheMovie movie]]!

Miku had yet another overseas concert in Singapore during the [[http://www.animefestival.asia/hatsune_miku.html Anime Festival Asia 2011]] on November 11, 2011. Kaito and Meiko made additional appearances during 2012's Miku Party concert. Miku has also opened for Music/LadyGaga [[http://www.animenewsnetwork.com/interest/2014-04-16/hatsune-miku-to-open-for-lady-gaga as a part of her [=ArtRave=] tour]], performing at no less than 16 different venues.

The producers Music/{{Cosmo}}, Music/{{Deco27}}, Music/PutinP, and Music/{{mothy}} have their own pages, as does the band Music/{{supercell}}, the music-video-making software MikuMikuDance and Creator/{{SEGA}}'s LicensedGame VideoGame/HatsuneMikuProjectDIVA.

'''Note: The following is only for tropes related to official Vocaloid material. For tropes on songs, fanon, and other fan works, go [[FanWorks/{{Vocaloid}} here]].'''

!!Provides examples of:
* AdaptationExpansion: The accompanying adaptations of the songs, especially if they are in a series or ConceptAlbum. ''Franchise/KagerouProject'' and the ''Franchise/EvilliousChronicles'' are very good examples of this.
* AscendedMeme: [[{{Music/UTAU}} Teto Kasane]], Mikudayo, Takoluka, Akita Neru, and Haku Yowane. Originally, some of them were just minor memes concerning experiences within Vocaloid fandom (Haku being the result of a failed Miku experience, Neru being born from an online argument) or from fake announcements (Teto being an out and out AprilFoolsDay joke), but they have since become officially recognized by Crypton. However, none of them (barring Teto) have actual voices due to the fact that some just never came with them and others just borrowed a pitched up vocal from another Vocaloid.
* AmericanKirbyIsHardcore:
** The homepage for the [[http://notanotheranime.blogspot.com/2011/05/hatsune-miku-commercial-debut-toyota.html Miku Corolla advertising campaign]]. It seems like whoever drew her doesn't like certain ideas of cuteness... Toyota changed her appearance later, perhaps bowing to pressure from disappointed fans.
** Crypton's [[http://piapro.jp/static/?view=sf_japantown Piapro]] website held a contest for an official "American" Hatsune Miku design, and declared a [[http://exiled-artist.deviantart.com/gallery/#/d41incp winner]] (made by [[http://exiled-artist.deviantart.com Exiled Artist]]). The contest runners indicated it would be used "in a commercial basis or in projects related to Miku's next concert"; it was eventually used in the March 9, 2012 39's Giving Day concert when she performed ''[=PoPiPo=]''.
* BlankSlate: Most if not all of them, since they aren't given any backstory or much of a personality. This is to allow music producers complete freedom as to how they choose to utilise Vocaloid in their song. Fan works tend to fill in the gap wherever characterization is involved.
** Some of the Chinese Vocaloids, specifically those featured in the Vocaloid China Project, downplay this trope. Their character bios are more detailed than the regular Vocaloid's, and a few short [[OriginalVideoAnimation OVA]]-like videoes have been released featuring them.
** The ''VideoGame/HatsuneMikuProjectDiva'' series also enlists the Crypton Vocaloids in a story mode and gives them some personality, the closest anyone will get to official characterizations for those six in canon.
* BreakoutCharacter: Miku Hatsune; she was only the seventh Vocaloid ever released, and yet she gained the most popularity among the fandom. These days, you can see a significant amount of fans who know more about Miku than any other Vocaloid, and sometimes learn about the franchise from her.
* TheCameo: Miku's first anime appearance was one of these in ''Anime/SayonaraZetsubouSensei'', as one of the people auditioning to be Meru's voice. Rin, Len, Kaito, and Meiko also appear in the same episode briefly, waiting in line for the auditions, however [[LawyerFriendlyCameo their coloring is off.]] Also, thanks to SEGA [[VideoGame/HatsuneMikuProjectDiva partially owning her,]] Miku shows up in a few of their games.
* CastHerd: The fanbase tends to categorize Vocaloids by the company they exist as products under, such as Miku, Rin, Len, Luka, Meiko, and Kaito in a "Crypton group", both because it's easier to sort out the LoadsAndLoadsOfCharacters this way and because it does make a functional difference in their promotions as companies generally don't like to cross-promote with others (hence why only the Crypton Vocaloids ever appear in the VideoGame/HatsuneMikuProjectDiva games). Some of these will be split into smaller subsets as well, such as company subseries or by engine type ([=V2s=], [=V3s=], etc.). This is only in terms of listing characters, however; actual songs and other creative media will use whatever characters the producer or creator has access to or feels like using regardless of product origin.
* CatGirl:
** [=SeeU,=] the Korean Vocaloid from the V3 series, has cat ears on her headset.
** Nekomura Iroha. She has a Franchise/HelloKitty design, with a big cat helmet and little cat-eared speakers, among other things. Her surname even means "Cat Village".
* ColorCodedCharacters: Many of the earlier Japanese Vocaloids had one dominant, unique color associated with them; with the influx of new Vocaloids, this concept has largely been abandoned.
* CoverVersion:
** [[ToMakeALongStoryShort If the song you're thinking of exists, they've probably covered it.]]
** Vocaloids are a popular target for ''utaite'', or singers who cover existing songs. Some of these singers have gained international popularity through covering Vocaloid music. There are even self-covers from artists such as Reol[[note]]Also a creator and lyricist for Giga-P[[/note]] and Toru Iname[[note]]Real name for [=40mp=][[/note]] and foreign language covers like [=JubyPhonic's=] work.
* {{Crossover}}: Thanks to Hajime Katoki, Miku is now also avalaible in [[VideoGame/VirtualOn Fei-Yen]] cosplay outfit, and Fei-Yen in a Miku Hatsune ShoutOut version.
* CurtainsMatchTheWindow: Several Vocaloids have this going on; namely Kaito (blue), Miku, Sonika, Miki, Kiyoteru and Ryuto.
* DigitalPiracyIsEvil: MAIKA lists this as one reason why [[https://www.youtube.com/watch?v=z_oj_KzpRho she'll quit singing.]]
* [[invoked]]FollowTheLeader: The [=UTAUloids=], the MACNE series, the Voiceroids, and the [=CeVIO=] Creative Studio due to hardware incompatibility with certain operating systems (as is the case for ALYS), and some general criticisms about certain voices.
* GenreRoulette: They've toyed with damn near every genre of music known to man, the only genres they HAVEN'T toyed with would be [[DoomMetal Drone Metal, Stoner Metal,]] and FunkMetal.
* HalfIdenticalTwins: Other than Rin and Len occasionally being played as these (a surprisingly rarer occurence than their appearances would suggest, as most works that do consider them twins don't necessitate that their faces look exactly alike), the song "[[https://youtu.be/Zi9cK-lI190 Not a Dream, Not a Lie, a Happy Scene Before My Eyes]]" employs this (both twins are portrayed by Miku, but one of them is explicitly referred to as male). The twins in the story are mentioned to look like "peas in a pod" and pull a TwinSwitch without anyone noticing. This somehow manages to make more sense than [[BigLippedAlligatorMoment the rest of the song]].
* IdiotHair: IA, Miki, and Piko all have one. Piko's is especially notable in that [[http://images1.wikia.nocookie.net/__cb20110427080453/vocaloid/images/4/46/Illu_Vocaloid_Utatane_Piko-bust.png it's even shaped like a P]] to reflect his name.
* ImprobablyFemaleCast: A quick look at the wiki shows that the total number of female voice banks is over ''three times'' the number of male voice banks.
* KaleidoscopeHair: According to Sonika's Twitter (which is run by Zero-G), her green hair is able to turn red.
* KayfabeMusic: At live concerts, the band is real enough, but the lead "singer" is a projected image (and not really a singer at all).
* LeftHandedMirror: Len and Rin Kagamine, opposite-gender mirrors of each other or HalfIdenticalTwins (depending on who you ask). This trope is most evident in Fanon works involving these two, as their official characterizations are virtually nonexistent.
* LicensedGame: The ''[[VideoGame/HatsuneMikuProjectDIVA Project DIVA]]'' series from SEGA casts the Crypton Vocaloids, some of the most popular Vocaloids( Miku, Rin, Len, Luka, MEIKO, and KAITO)[[note]][[TheCameo Guest starring Teto, Haku, Neru, Mikudayo, and Tako Luka]][[/note]] into a popular RhythmGame franchise. Its sister franchise ''Project mirai'' also includes GUMI, and other, non-Crypton Vocaloids also have their own games, such as ''Megpoid the Music#'' for GUMI's standalone title, as well as ''IA/VT COLORFUL'' for IA.
* LiteralSplitPersonality: Len and Rin Kagamine, according to one interpretation. When asked whether they were meant to be siblings or lovers, a representative of the company responded with a ShrugOfGod and described them (metaphorically or literally) as "a single soul split between two bodies".
* LoadsAndLoadsOfCharacters: There's quite a few already and the number is only growing. And that's not even getting into the fanmades and genderbends. Note that this number increases ''exponentially''. In 2010, the number of Japanese Vocaloids could be counted on both hands, and the number total were still easy to keep track of and to recite without issue. By the time 2012 arrived, the number had almost tripled.
* LoadsAndLoadsOfLoading: The PSP version of Project DIVA games are plagued with this, not surprising since most UMD-based PSP games have long loading times. Especially if you have the [=DLC=]s installed, as it needs to check the license every time the list of DLC items are loaded.
* LyricalDissonance: Some of the nightmare fuel songs like "The path to eternal happiness I found it" can be misleading. [[LyricalDissonance/{{Vocaloid}} Comes with its own page.]]
* MeaningfulName: Most official and fan characters. For example, the 'Hatsu' of Hatsune (Miku's surname) means first; she was the first Japanese [=Vocaloid2=] character and first of Crypton's "Character Vocal Series". The 'Kagami' part of Kagamine (Rin and Len's surname) means 'mirror'; Crypton once described them as mirror images instead of being twins, although they [[FlipFlopOfGod backtracked]] on that. The 'Meguri' of Megurine (Luka's surname) means circulating/revolving; a reference to her bilingual capabilities. Furthermore, the 'ne' at the end of Kagamine, Hatsune, and Megurine means 'sound'. Akita Neru means 'I'm tired; going to sleep' and Haku Yowane means 'weak-willed words'. In fact, the name "Akita Neru" was coined ''because'' of the troll who created her using the phrase ''akita, neru'' ('I give up; going to sleep'), as a reaction of frustration about the difficulty of using the VOCALOID software.
** Lily's voicebank was sampled from the singer Yuri Masuda. "Yuri" means "lily" in Japanese and similarly, Gakupo, voiced by Gackt (pronounced Gakuto) and Gumi, voiced by Me''gumi'' Nakajima. Utatane Piko, voiced by Nico singer [[ExactlyWhatItSaysOnTheTin Piko]].
* MoeAnthropomorphism: One of the main reasons why Vocaloids are so popular.
* MultinationalTeam: A group of over 45 vocal banks, all with vocals from across the globe. So far, there are English, Spanish, Japanese, Chinese, Korean, Taiwanese, and many more, with some being able to be used on two languages.
* OneMarioLimit: A visual variant. Any other character with big twintails of a similar color will be confused with Miku. This created problems when Stardust's original design was revealed, with many fans accusing her of stealing Miku's design.
* OppositesThemeNaming: Rin and Len Kagamine. Their names are a pun on the words "right" and "left", respectively.
* PhenotypeStereotype: Sweet Ann and Oliver, according to their box art. Len and Rin are a subversion, as they are Japanese.
* RapunzelHair: Miku, and to a lesser extent Luka, Galaco, Iroha, Mew, Haku and Neru. Fanartists tend to draw it ''even longer'', to the point of it being longer than the character is tall.
** IA's hair is so long that ''it goes down to her ankles''.
* SiblingYinYang: Between Len and Rin. This is somewhat emphasized in the Append artwork; Rin's outfit is mainly light with some darker elements, while Len's is mainly dark with some lighter elements. And the [[http://weekly.ascii.jp/elem/000/000/029/29482/1_cs1e1_x584.jpg boxart.]]
* ThemeNaming: A good number of the Japanese Vocaloids have the character 'ne' (sound) in their surnames, such as Miku, Len and Rin, and Luka.
* ThemeTwinNaming: Rin and Len are puns on "R" (right) and "L" (left). Ultimately played with, as official descriptions state that they're not exactly twins. anon and kanon are a straighter example though.
* TheVoiceless: In Project Diva F, DLC characters Yowane Haku, Akita Neru, and Kasane Teto are not given voices when in the interactive mode. They do sing, however, which is odd. Curiously enough, Haku and Neru, who were adopted as "official" characters by Crypton, do not actually have official voices, which leads to Miku and Rin users downpitching the vocals to give them some semblance of a vocal identity.
* ToTheTuneOf: The ''Music X Study Project'', which takes twenty popular Vocaloid songs and injects them with a constant flow of education, using self-covers from the songs' original artists to teach middle-to-high school students about subjects from Japanese history to chemistry. Behold, Rerulili's [[https://www.youtube.com/watch?v=Av0M4VB4RVc "Joumon Explosion Girl"]], a version of the popular "Brain Fluid Explosion Girl" with all of the lyrics replaced with historically-accurate references to the Jomon period of prehistoric Japan.
* UnknownRival: Hatsune gets this in the form of [[{{Music/UTAU}} Utau's]] own BreakoutCharacter, Sukone Tei.
* VocalDissonance: Nekomura Iroha has a surprisingly deep and mature voice, which constrasts greatly with her cutesy Hello Kitty design.
** CYBER DIVA surprised many by how nasal her voice is.
** flower and Fukase's voices are rather androgynous-sounding in tone despite their character design clearly being female and male respectively.
* WolverinePublicity: Miku is something of an internet sensation, and a lot of people would like her to feature in their own properties, not just as a virtual voice actor but as herself-- even a minimal role will do, as long as they get to display her prominently in their advertising. {{Creator/SEGA}} is particularly guilty of this; ''VideoGame/SeventhDragon 2020'' featured a Hatsune Miku Type-2020 and had her do the theme song, ''[[VideoGame/SuperRobotWars Super Robot Wars UX]]'' basically turned [[VideoGame/VirtualOn Fei-Yen]] into Hatsune Miku and made her voiced by Creator/SakiFujita, ''{{VideoGame/Yakuza}} 5'' included a Miku outfit and a statue of her, ''VideoGame/PhantasyStarOnline2'' held a Miku/Luka concert and featured Miku outfits and Mikudayo... the list goes on and on.
* YouGottaHaveBlueHair: Kaito, Gakupo, Miku, Luka, Gumi, Sonika, Miki, Iroha and Gachapoid's [[MoeAnthropomorphism human form]].
* {{Yandere}}: Happens every now and then, with the most common of which that have yandere (or yandere-ish) songs being [[{{Pride}} Hatsune Miku]] and [[{{Lust}} Len Kagamine]]. Ironically enough, an actual {{Yandere}} known as [[{{Music/UTAU}} Sukone Tei]] has her life involve two Vocaloids, [[OhCrap Usually to]] [[AbhorrentAdmirer the disdain]] [[DontAskJustRun of the Vocaloids]].
* ZettaiRyouiki: Hatsune Miku and, subsequently many other female Vocaloids.