No. VOCALOIDs are not couples. VOCALOIDs do not have to deal with anime or couples. It's only a singing program.
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.
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.
IA's male version is IO.
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.
Oliver the Vocaloid does not have an official last name.
For the pictures I suggest you use something like... I don't know... Google images? If you wikipedia 'Vocaloid' it shows all of the vocaloids which have been released.
One would assume so, They are Vocal Android's Therefore the name Vocaloid
Yes, all vocaloid programs are compatible with English Computers.
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!
VOCALOID 2
Yes, Ai is a vocaloid. A vocaloid 3 to be exact.