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.
Megurine Luka
Despite the inclusion of English, Megurine Luka was not aimed at a worldwide audience, instead focused primarily at Japanese producers. In 2010, Luka was ranked as the 3rd most popular Vocaloid product Crypton has sold. In October 2013, Luka's Vocaloid 2 software disappeared off the top 10 products charts as the Hatsune Miku V3 and its bundle package disrupted the chart rankings. Luka had already fallen to 6th place during the 2013 period as a result of the KAITO V3 release, but this was the first time Luka had disappeared from the charts. After the charts began to settle down again, Luka began to occupy the same spot on the charts that the Vocaloid 1 KAITO package previously occupied (6th-8th place), putting the popularity of the product on par with the older product. After the MEIKO V3 release, Luka became the only member of the Vocaloid 2 Character Vocal Series vocals to have a product on the charts, leaving her in 5th place. However, Vocaloid 2 vocals were mostly absent from the rankings in April 2014. By mid-2014, both she and the Vocaloid 2 Kagamine Rin\Len package no longer held constant places in the rankings and were constantly on and off Crypton Future Media sales charts. In March 2015, the Megurine Luka V4x package got the no.1 spot for the sales of all digital instruments on Big Fish Audio. Soon after the V4x package release, she grabbed the Crypton top sales rankings and remained there for April 2015. On May 1, the site updated to reveal the package now in 3rd place behind Hatsune Miku V3.