this is pretty stupid but

Miku Zatsune is the dark side version of Miku Hatsune.Her voice is a little deeper than Miku Hatsune and her 颜色 are Red and Black instead of Blue-Green and Black.

Zatsune Miku is an unofficial derivative of Hatsune Miku. She is considered the "Sexy version" of Miku, and is supposed to have the same voice as Hatsune,but many 粉丝 prefer her lower. Her most 流行的 personality percieved 由 粉丝 is "cute, yet punky and emo" >:3