RED previously stylized as Red, is a young tomboyish girl whose goal is to find wives for herself. She represents the company Red Entertainment.
- RED's name was emphasized in capitals.
- RED is the only playable character in Hypedimension Neptunia that does not appear in Hyperdimension Neptunia mk2. However, she reappears after a long absence in its remake, Hyperdimension Neptunia Re;Birth2.
- One of the name of her events, "LEFT 4 RED," is a reference to Left 4 Dead.
- RED's attacks are puns and references to yoyo techniques.