Hatsune Miku

 is a character from the Vocaloid franchise.

Why She Rocks

 * 1) Has one of the greatest songs like "World is Mine".
 * 2) She was the first Vocaloid 2 produced.
 * 3) Her defining songs propelled her popularity.
 * 4) She is very popular in Japan.
 * 5) She is always charismatic and puts the way she is animated to good use, from the way she dances to the way she talks.