After the death of Hilda, Melfina travels with Gene after he promises to find her purpose, and gradually begins to develop feelings for him. Later in the series, it is revealed that she was created to navigate to the Galactic Leyline, and is the only one able to act as a medium to access its vast powers. Because of this, the pirates referred to her as the "Maiden of the Leyline". In the last episode, the part of her spirit which was created to be the Maiden of the Leyline departs from her and relocates with the Leyline itself, meaning that Melfina is no longer bound to the Leyline and her past, and is subsequently freed from a forced destiny. Afterwards, Melfina and Gene finally admit their love for each other, and she joins him in exploring space aboard the Outlaw Star.
Melfina navigates the Outlaw Star from within a cylindrical chamber on the bridge that rises from the floor and fills with a clear, liquid-like substance, supposedly to help her link with the ship. The liquid is most likely a stabling agent to help ensure that her link is static-free, and because of this she has to navigate without wearing any clothes. She covers herself with her arms across her chest in a formation resembling angel wings, and her lower area is obstructed by the chamber's outer retractable metal coverings. As part of Cartoon Network's editing, the show has her portrayed as wearing tight black shorts and a sports bra.
Voiced by: Ayako Kawasumi (Japanese), Emilie Brown (English)