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In the Ultra Dimension, Compa first appears as an infant. Compared with the impudent IF and the dumb-but-energetic Peashy, she is a good girl who doesn't require a lot of care. From childhood till adulthood she continues to insist that “Nep-Nep's all I need!” When she grows up she enrolls in a nursing school. She also helps out around the Basilicom. On top of her own responsibilities, she cooks for Neptune if she is hungry, or will even act as a human pillow for Plutia when she is tired.
Compa has long light congo-pink hair with matching congo-pink eyes. She wears a tan-white wool sweater top with and matching arm warmers and boots, but with fuzzy balls at the top. Compa also wears a red plaid skirt, a black choker with a small heart on it, black-brown knee-socks with light pink heart cut frills, and often carries a black hip purse, and heart shaped buttons. Like her headband, both her purse and the heart on the choker has Compile Heart's noticeable C logo.
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.
Main Article: Compa/Ultra Dimension/Relationships
Hyperdimension Neptunia Victory
The Ultra Dimension Compa is first introduced as a baby who was taken in by Planeptune's Basilicom due to kidnappings being done by the Seven Sages.
The game shows Compa as a baby to a young child and then an older teen due to many years having passed during Neptune's stay in the Ultra Dimension. As a child she is kidnapped by Arfoire so that they could attempt to make her a CPU using the CPU Memory.
However, when Neptune and her friends catch up to Arfoire, she is left in the care of Pirachu who ends up letting her go anyway and seemingly falling for her again even in Ultradimension. In the True End of the game, Compa is shown drowning in the sea of dolls made by Plutia of all her friends.
Hyperdimension Neptunia Re;Birth3: V Generation
Main Article: Compa/Ultra Dimension/Gameplay
Main Article: Compa/Ultra Dimension/Quotes