An [[UTAU]]loid. Ruko is the second attempted joke character made by the VIPPERS of 2ch, to trick people into thinking she is the third Vocaloid from Crypton. She is a [[futanari|hermaphrodite]] and is able to sing as a male or a female. Officially, she is mostly male, but fans commonly regard her as a female due to her appearance.

She is tall in stature, and has black hair in [[twintails]] with blue highlights. Her eyes have red and blue [[heterochromia]], which reflects fluency in both Japanese and English. Ruko wears only one glove, on her right hand. Her outfit is a sleeveless dress shirt covered by a sleeveless dress coat, complete with detached sleeves and necktie; she wears low-cut pants which exposes a pair of black string underwear.

She is often drowsy, hence her name's phonetic reading of "Yoku neru ko". Her character items are a pillow and a cup of coffee.

h4. See also

* "Ruko wiki":http://utau.wikia.com/wiki/Ruko_Yokune
* [[Kasane Teto]]
* [[UTAU]]
欲音ルコ