サカナちゃん

The island's "North Maiden". Nicknamed "Fish Girl" by Head, she is locked in a cage at his room since her seal was broken, allowing the order to take control of most of the island's Cybodies. It is there that she sings the main fighting song for Star Driver, Monochrome. Throughout the episodes, she also tells the story of Sam the Squid-Piercer.
In episode 7, after completing the story of Sam the Squid-Piercer, Reiji releases her from her bird cage, and she is allowed to leave the island due to her maiden seal having been broken. Reiji has stated that it hurts his heart to let her go, while she also stated that she loves Reiji. It is unknown how she fell into the Crux's hands in the first place, allowing them to break her seal although it has been hinted that she did it willingly. In the credits of the movie she is credited with her real name, Hyou Matsuri (ヒョウ・マツリ).