Cave is a NPC in Hyperdimension Neptunia mk2 and the personification of the game company Cave Co. She was later released as a playable character through DLC.
A member of the Leanbox SMD (Special Missions Department), Cave is close friends with Chika and 5pb, other residents of Leanbox. People tend to think of her as a cool and stylish adult woman, but in reality she is self-conscious about the fact that her appearance doesn't translate well to cuter outfits.
