Yume Kowaine is Bakaloid. Her real name is Kowai Yumene but for some reasons she changed her name.
On her belt there are notes. Unlike other vocaloids she don't have nor headset, nor detached sleeves because originally she isn't vocaloid (singing android).
Yume Kowaine is anti-social robot.
Yume Kowaine is a robot made by aliens to represent other aliens human being. She's programmed to act like a normal human and have emotions.
But for some unknown reason she was sent to planet Earth and her system got reset. That's why she don't remember how aliens looks a like.
Later she was found by another fanloid - Kirei Akumune. She was made by humans and lives in the same house as other -'loids (Voyakiloids, Vocaloids, Utauloids, Boukaloids, Fanloids etc). And they became best friends. Together they made Zero Yumeon.
- Probably only android made by aliens