Nepgear is a recurring character in the Neptunia video game series, and the main protagonist of. "I'm Planeptune's CPU Candidate! Nepgear!" Nepgear (ネプギア Nepugia) is the human form of Purple Nepgear (images) · Nepgear (fanart) · Nepgear (textures) · Nepgear (costumes). Nepgear is the CPU Candidate of Planeptune and Purple Heart's younger sister. In stark contrast.