Hiro, also known as Code:016, is the main protagonist of the anime series Darling in the Franxx. Once a prodigy, Hiro loses his ability to pilot Franxx mecha, causing him to feel isolated and purposeless until he meets Zero Two. Their partnership rekindles his resolve, and together they face numerous challenges. Hiro is known for his intelligence, kindness, and determination, playing a pivotal role in the story's emotional and thematic development, ultimately shaping the fate of humanity.