It depends on which one you mean:
Long blue hair in pigtails - Hatsune Miku
Male in blue scarf - KAITO
Girl with jewel on headband - Aoki Lapis
Kaito does not have a last name
No Teto is not a Vocaloid. I have heard before that She was made to be a prank. She is mistaken to be a Vocaloid. She sounds like a Vocaloid(y) software.
IA's male version is IO.
People are not sure if the second VOCALOID for the 1st generation was LEON or LOLA. They were both released on the same day. For VOCALOID 2nd generation, Hatsune Miku was the second VOCALOID after Sweet ANN. Lastly the VOCALOID 3rd generation, VOCALOID SeeU is the 2nd after MEW.
Yamaha created and developed the Vocaloid technology. See the Vocaloid wiki article for more details about the technology and its impact on the internet.
Piko is the name of both the Vocaloid and the voice provider, who is naturally not a Vocaloid.
if u mean the girl in the Akatsuki then its Konan.
One would assume so, They are Vocal Android's Therefore the name Vocaloid
Kaito does not have a last name
VOCALOID MEIKO does not have a last name. VOCALOIDs from the 1st generation do not have last name. Meiko Sakine is just a fanmade version of vocaloid MEIKO. So does Kaito Shion, Zatsune Miku and more.
Yes. She is a VOCALOID 2 software created by INTERNET CO. LTD. Her voice provider name is Megumi Nakajima. She has an update, native, and english voice bank in VOCALOID 3.
Dude, the so-called Miku Vocaloid isn't an anime! It's a voice synthesizer.
Her name is Hatsune Miku!
Galaco does not have an official last name.
VOCALOID 2
Yes, Ai is a vocaloid. A vocaloid 3 to be exact.
There is no VOCALOID video game, unless you're referring to MMD (Miku Miku Dance), which is completely free on VPVP.