Neptune, also known as Purple Heart, is the protagonist in the anime series Choujigen Game Neptune. She is a carefree and energetic goddess who loves to play around, often acting without thinking. Despite her playful nature, Neptune is fiercely protective of her friends and the world of Gamindustri. As a CPU, she possesses immense power and transforms into her more mature and serious Purple Heart form to combat threats. Her journey involves overcoming challenges, forging alliances, and striving for peace among the CPU nations.