Holon is a central character in the anime series 'Real Drive.' She is an android who serves as the assistant and companion to Masamichi Haru, a seasoned diver in the cybernetic world known as the Metal. As an advanced AI with a human-like appearance, Holon provides emotional and technical support during the dives. Her character explores themes of artificial intelligence, human-machine relationships, and the nature of consciousness. Throughout the series, Holon demonstrates loyalty, adaptability, and a quest for understanding her own identity as she aids Haru in solving mysteries within the Metal.