|Birthplace||Under the sea|
|Race||Human, likely a fish|
|Hobby||Looking for friends|
|First Appearance||pop'n music 9 CS|
Tetra is one of the CS characters from Pop'n Music 9.
A fish girl who is living alone in the bottom of the deep sea. Though the bottom of the sea is cold, broad, and dark, she continues to sing a song while looking for a fellow. It's good to meet the fellow sometime.
Tetra appears with peachy skin and pale turquoise eyes. Tetra's hair is orange, but was formed into a curved and strange style, because of her ocean tendencies. She wears a knee-length frock with a pair of thick straps on the back and green/blue tints around.
Tetra is a Latin word, translated to "four".
- Tetra's birthdate is identical to Yun's.