Hatsune Miku

Hatsune Miku (Japanese: 初音ミク), sometimes referred to as Miku Hatsune, is a humanoid persona voiced by a singing synthesizer application developed by Crypton Future Media. Hatsune Miku is a 16-year-old girl with long, turquoise twintails. She uses Yamaha Corporation's Vocaloid 2, Vocaloid 3 and Vocaloid 4 singing synthesizing technologies. She also uses Crypton Future Media's Piapro Studio, a singing synthesizer VSTi Plugin. She was the second Vocaloid sold using the Vocaloid 2 engine (the first being the English Vocaloid Sweet Ann), and the first Japanese Vocaloid to use the Japanese version of the Vocaloid 2 engine. Her voice is modeled from Japanese voice actress Saki Fujita. Hatsune Miku has performed at her concerts onstage as an animated projection hologram.

Characteristics
During Miku's development, Crypton decided to take a different approach from that used by the other Vocaloid sound bank publishers. It was decided that to make the product successful not only would a highly appealing voice need to be developed, but that the voice needed an image. She was originally aimed only at professional producers; the amateur and otaku market had not fully formed yet, and so were not initially considered.[48]

The task for coming up with Miku's image went to the manga artist Kei Garō. When Kei designed Miku, his only direction was that she was an android and what her color scheme (based on Yamaha's synthesizer's signature turquoise color) was. The design on Miku's skirt and boots are based on synthesizer software colors and the bars represent the actual bars within the program's user interface. Miku was originally intended to have a different hairstyle, but Kei stuck to pigtails or bunches after trying them out. Crypton then officially created and posted Miku's personal data sheet. However, this only contained her 'physical' and technical traits; Crypton did not provide much information about Miku's personality, which has allowed song/music video creators and fans to choose the traits that they think suit her best.