Hatsune Miku
Hatsune Miku was the first Vocaloid developed by Crypton Future Media after they handled the release of the Yamaha vocal Meiko and Kaito. The name of "Hatsune Miku" was conceived soon after the Vocaloid 2 announcements, when an English and Japanese vocal were developed for the character. The intended design was delayed and later used for Megurine Luka instead. Miku was intended to be the first of a series of Vocaloids called the ""Character Vocal Series"", which included Kagamine Rin/Len and Megurine Luka. Each had a particular concept and vocal direction.
Vocaloid 2
VY1 was developed under the codename of "Mizki" as a professional Japanese female vocal with no mascot, designed to fulfill any role and head any Yamaha Vocaloid product. It was released on September 1, 2010 by Bplats and designed to act as a "Standard" vocal of noted quality for the Vocaloid software. It was released on September 1, 2010. It handled samples differently to previous Japanese vocaloids. It sold with a standard and a "deluxe" version, the deluxe version came with a CD called ""feat.VY1"". The CD featured various songs and producer made content and was designed to display the creative freedom that VY1 brought. This was due to it having no official set mascot, leaving her appearance, age and even gender be up to the producer.