Nepgear, also known as Purple Sister, is one of the protagonists in Hyperdimension Neptunia: The Animation. She acts as the CPU Candidate of the nation Planeptune and is also the younger sister of Neptune. She is different from her sister in the sense of her being more studious and diligent, where as Neptune is lazy. People could often mistake her for the oldest based on Nepgear's older appearance in terms of human forms. However, when both are transformed, it is obvious Neptune is the oldest. Also unlike her sister, Nepgear's personality doesn't really change between forms.