Zero Two is a pivotal character in the anime series Darling in the Franxx. She is a mysterious and alluring pilot with distinctive red horns and fangs, who is known as the 'Partner Killer.' Zero Two is a hybrid human-Klaxosaur, making her both feared and misunderstood by others. Her main role in the series is as the co-pilot of the Franxx robot Strelizia, alongside her partner Hiro. Throughout the series, Zero Two's complex personality and her quest for humanity and love form the emotional core of the story.