i think thats all right but u forgot 2 say that rin loves to kill len a lot lol -.-

Miku-san to me is just like you said and well...she likes leek, Kaito is a gentle, idiotic person who has a fetish for ice cream (his 'Ice ga Meruto', 'Ice cream, come!' and cover of 'Ice cream no uta' is evidence enough), Meiko-san is the type of person who often drinks alcoholic beverages (in short, she's an alcholic) and can be violent at times (mostly with Kaito around, poor guy), Gakupo likes to flirt with the ladies, loves the eggplant very much as Kaito loves his ice cream and Miku loves the vegetable leek and provides great advice but for some reason he can't solve his own, Luka-san seems like a cool woman with a few words, Rin-chan...not sure but I think she's a sharp kid and is often up for mischief, Len...all I could think is the guy is a shota and often teams up with his sister for the sake of pure mischief, Gumi...is gumi, Yuki-chan is a cute and lovable kid while Kiyoteru-sensei is...sensei.

I think that kaito is one of those guys who jokes around a lot but when it comes to something important he is dead serious. And then Rin is a girl that can be shy at times but when she's with people she really knows she's wild and carefree. and then miku is really energetic and an optimist. then meiko's an alcholholic. and then my favoririte, Len, is really nice and over protective brother but at the same time a romantic.

Hahaha sexy. XD

I am nice and always looking after Rin. I also serve as a doormat at times, mostly to my sis. Gentle, a little...and I pretend I don't care at times when I really do love all the Vocaloids and would do anything for any of them. I have one rule-don't call me shota. I will get taller when I'm older! You'll see! My sister, Rin, is really sweet and tries to be innocent, even though she has anger issues. She's a tad lazy and makes me do all the work...but we love each other. Nobody really knows this, but she's on the Internet or playing video games ALL the time at home. Kaito is...an idiot. Meiko picks on him a lot. She's a total drunkard who is very rough on everyone. (mostly Kaito) I barely talk to Gackpo! But from when I do, I have figured out that he...fantasizes about all the girls...especially Luka. She's real mature and smart. You can learn a lot from Luka. I don't really talk to Gumi. I'm not sure how she acts, but Miku says she's really eccentric and talks a ton. Ah, Miku. She's adorable and so...sweet. Miku is REALLY nice. Trust me. Sorry I put so much on myself. If you want to talk to my sister, she's on here too.

In my opinion Miku is a very absent minded baka,Kaito's that wierd emo guy who loves ice cream and rainbows(but he still acts depressed),Rin is really sweet and innocent(but kind of selfish),Len is the smart shota boy who has some very dumb moments at times,Meiko is a tsundere towards everyone when she's drunk and loves to party,Gakupo seems like one of those guys who constantly flirt with girls no matter all the time,Luka...is also flirty and likes to be left alone,Gumi is like Miku and Rin mixed together. That's what I think about some of the vocaloids I guess...

I don't know XD but if they were real i will hangout with them !!!! ahahahhaha..... WHAT THE IS THAT LEN AND KAITO?! HEY LEN AND KAITO I WANNA SEE MIKU, RIN, MEIKO,LUKA ALL OF THEM MY 2 BEST FRIENDS AND ME WERE ADDICTED TO VOCALOID AND WE REALLY WANTED TO WATCH VOCALOID CONCERT SHIS AHHHAHAHAHA XD WAIT LEN IS NOT SHOTA ?! VOCALOID IS THE BEST!. im going to die of happiness or maybe my 2 best friends too if we saw vocaloids in real life AND IF SOMEBODY SAID THEY ARE FAKE OR SING HORRIBLE I WILL KILL THEM IN FEW SECONDS HAHHHAHAHAHA. KIDDING

Well, for my opinion, i'd say that:
Miku Hatsune: A gentle singer who sings for her fans
Len Kagamine: A twin brother (which he's not Rin's twin brother) who plays around
Rin Kagamine: A twin sister (not Len's twin sister) who uses Road Roller when getting mad
Luka Megurine: A princess who sorta finds her own ways
Kaito: My enemy...ANYWAYS, a man who uses "Naked Scarf Pose"
Meiko Sakine: A woman who gets drunk when it comes to drinking Sake (rice wine)
Akita Neru: A girl who loves Len Kagamine...and uses her phone...
Haku Yowane: A silent lady with a silent look
Gakupo Kamui: A samurai in which i thought he was a prince from somewhere in the japan era
Gumi: A girl who likes being a Vocaloid

AND INCLUDING:
Teto Kasane: A chimera who needs french breads each and every day
Mikuo Hatsune: A boy version of Miku Hatsune
Ted Kasane: Teto's older brother
Akaito: Either a cousin of Kaito, or a girl version of him
Gakuko: Either a sister of Gakupo, or a girl version of him
SeeU: A girl that looks like a young princess who is lost
Defoko: teto's friend that uses a rocket launcher or rpg
Lily: an adult version of Akita Neru
Neru Akita: Same as Akita Neru, but there's no difference here...
Gumo: A boy version of Gumi
IA: a vocaloid 3 singer who looks like a simple girl

Len:A young BOY that loves bananas and the lady's but a bit shy at times (also my fav <3) that's all I'm saying for now

miku: A girl that is happy most of the time but if you make her mad that's the end of you (she'll kill you with her leek) rin: I think she's mean to her brother len but loves him a lot

Well, I don't really make personalities for vocaloids but I'll give my interpretations.
Miku is innocent, sweet, the typical ideal girl. She's usually oblivious to serious issues or she's probably just an optimist. She can be really emotional sometimes, judgine from her append voices, ranging from depressed to light-hearted.

ohey headcanons I HAVE A LOT OF THOSE.

General: they all turn into their box art when they're asleep. meaning yes, leon and lola are giant lips, miriam is a chest with hair and the vys are their respective items.

LOLA: A young African woman with braids. She's about 18. She wants to be world renowned, but she just doesn't have the image or voice that everyone loves. She doesn't mind though. She acts as a bit of a mother to SONiKA, despite being only a couple of years older than her. She despises her state during sleep because it means that the only person she'd ever have a chance of sleeping with is LEON, and she finds him annoying.

LEON: Similar appearance to LOLA, but more masculine. He's 19. He sometimes tricks his brain into thinking he's asleep and smothering everybody.

MIRIAM: For some reason, I've always thought of her as a nun? That's really all I have though.

MEIKO: The most modest of every Vocaloid. She never leaves her room without shoes and socks, jeans and a shirt that completely hides her cleavage. She doesn't like performing/acting because she has to wear things other than these. Generally kind to everyone, but never hesitates to call someone out on anything they're not allowed to do. 19 years old.

KAITO: Quiet as fuck. He usually answers questions with one or two words, and is a firm believer in 'actions speak louder than words.' The others often find it really annoying. He's 16.

Sweet Ann: The oldest English Vocaloid, 34. Likes to think of herself as a free spirit and won't take bullshit from anyone.

Miku: She's really quiet and shy around anyone she doesn't know. Whenever she leaves her house, she puts on a wig to not be noticed, even if she's just getting mail or something. When she's only around friends, she can be very demanding and does anything to get her way. She thinks that being really popular makes her more important than the others. Despite having a healthy girl image, she usually pigs out when she's by herself. Her favourite food is KFC.

Prima: She used to not have a very large vocal range, but after practice, she was able to reach her dream, to become an opera singer. She likes to pretend technology isn't too far along or anything and imagine herself as a popular singer in the '60s or so. She's 28.

and i shall post more later. i have interesting kagamine, gakupo and gumi headcanons and i would post them now but am tired.

MEIKO: She's really the alcoholic type. You know...the one absolutely loves getting drunk and using drugs.
KAITO: Kaito is very childish and playful. He's like a kid that loves to eat Ice Cream 24/7.
Miku: As my favorite, she is very sweet and gentle, although sometimes used as the bad guy in some music videos.
Rin & Len: They are very sweet together. It's like that ALMOST every music video that involves them has both of them together. The one thing that I don't like is that they share the same vocalist.

Those are mine. I only reached until Rin & Len.

copy + paste from cerudays' question because lazy

"meiko: she's a very modest person and makes sure to always be completely covered, even in the house. she tries her best to stay as healthy as she can, but she only uses exercising equipment to exercise.

miku: she's extremely shy, and actually wears a wig off-stage so she's never recognized. if anyone talks to her in public, she won't be able to talk, just make small noises. because of this, she speaks japanese sign language fluently.

rin: len's younger sister; they're not twins. just born around a similar time. she's rather soft-spoken, but only in public. at home, she's the loudest of everyone. most of her jokes involve teasing len, usually saying he's in love with someone or about crossdressing because she's just an ass to him like that. also is a complete tsundere when it comes to miki AHAHAaha.

len: easily the most corrupted of them all. he's often pretty hyper, mean, respectful and he swears a lot (trust me, it's possible to be like all of those at once), but there's just times when he stops everything and thinks "what am i doing with my life, why am i here, let me go get a knife." this can only be stopped by him listening to music, watching tv, playing video games or being around others. he talks to himself a lot and is madly in love with whoever you want because i ship him with everyone (same can be said for rin, it's just i have a huge love for the miki/rin ship), but will never admit it. ever.

gakupo: he's pretty quiet most of the time, but if you get him talking he won't shut up. his sense of humour is almost as sexual is len's (who, by the way, uses that humour more than any other kind of talking).

gumi: same sort of humour as the previous two, it's just that hers' is more guy/guy oriented because she's just like that. and then more fancy stuff im too lazy to explain because i seem to start being an idiot in the early afternoon AND GUESS WHAT THE TIME IS

alternate rin/len headcanon: teen lovers because face it that's just adorable."

btw it's night time right now so i don't have the energy to expand gumi's part

Hatsune Miku: A girl with a high pitched voice that is featured in most Vocaloid2 songs. Green>Blue vocaloid.
Len Kagamine: The youngest guy there, with not that many songs. (I'm still searching!) Yellow vocaloid.
Rin Kagamine: The scary sister that likes to injure people. Yellow vocaloid.
Kaito: The guy that loves ice-cream. Blue vocaloid.
Meiko: The woman that has been seen as a murderer and has featured in some songs. Red vocaloid.
Luka: A girl that was said to have attention away from Miku, Miku said this, "you get attention from your chest!" Pink vocaloid.
Teto Kasane: A young girl with a highly robotic voice. Pink vocaloid.
Neru Akita: A girl that is constantly using her phone... Yellow vocaloid.
Haku: For me: A mystery woman. White vocaloid.
Gapuko: He looks like a darn samurai! Purple vocaloid.

Did I already post here?

These are just my opinions, and how I look at them.

Miku: A fun-loving girl who loves to sing but has a very high-pitched voice, she has a lot of friends. (The other Vocaloids.)
Rin: The hyper and somewhat violent and aggressive one who loves to talk and is usually happy.
Len: Almost completely Rin's polar opposite, he's mellow and somewhat shy, but friendly once you get to know him.
Kaito: Nice, but can be a goodie-two-shoes at times, loves ice cream.
Meiko: The violent alchoholic, 'nuff said.
Gumi: The motherly type, she's friendly and caring and will listen to any concerns you might have.
Teto: A sweet girl, but she doesn't really get the best of grades (Kasane Territory PV is how I look at her that way.) She dreams of being a Vocaloid but probably won't ever be (Again, Kasane Territory.).
Luka: Mysterious and shy; hopeless romantic.
Neru: Cell phone addict. 'Nuff said.

Not putting Gakupo because... Well... I don't like Gakupo. *Shot*

im gonna scare everyone here by saying that my luka is a crazy drunk and my meiko is really really shy
because thats how my headcanon works

For me:
Miku: a gentle girl who is addict in LEEKS...
Len: a cute SHOTA , likes eating bananas and always dies in their song -_-
Rin:a childish girl that who ever make her mad will get her ROAD ROLLER and roll it to you.....
Luka:quiet,gentle anddddd....
Meiko:likes drinking alcohol.....
Kaito:a 23 year old boy who sings for his love for ice cream....
Gakupo:A CRAZY SAMURAI.......
Oliver:an innocent boy : ) shy and quiet and has a bird named james..
Mayu:Y-A-N-D-E-R-E YESS!!!! She always have her axe...CREEPY..
Neru:a cellphone addict girl and loves Len alot...
Tei:a Yandere too and always stalk len.....
that's all : ) or if you are not content THEIR PERSONALITY IS BASED ON THEIR SONGS.....
i hate myself nowww... :3