A clumsy nurse who spends her time working at a hospital in Planeptune, if she's not out on an adventure. She's very good friends with IF and Neptune. Compa has a knack for cooking and completing other household duties, so she often comes to the Basilicom to cook meals and help out. She was the first to call Neptune "Nep-Nep". In order to make Neptune eat with a smile, Compa always ends up coddling her.