Compa is a major supporting character in the Hyperdimension Neptunia franchise. She is a nurse-in-training with an easygoing personality and marches to the beat of her own drum. She is skilled at cooking, and while she can be a little naive, her bedside manner is soothing and well-rehearsed. Compa is a very kind and caring girl who takes her dream of becoming a nurse very seriously. She will always try her best to make sure that everyone is healthy and will never leave an injured person alone to suffer. She can be somewhat of a ditz at times and also very clumsy as well, but all in all she cares for everyone no matter the situation. She is also surprisingly good at math. Her name is a reference to the company Compile Heart, producer of the Neptunia games.
Compa appears in All Star Smashers as an assist character for Neptune, appearing to provide an explanation for her Down-B, Do Your Best!