Nejiyanagi Yuko is a supporting character in the anime series Heybot! She is designed to resemble a horror character, with a frightening appearance that parodies Yamamura Sadako from the Ring series. She has long black hair that covers one eye, green eyes, and usually wears a white dress. She is often depicted with sharp teeth and wears a green screw as a necklace, tying her to the show's screw-based theme. In the story, she is the partner of Kowa Kowat Natsuo. Her role within the series is that of a horror-themed character who appears in the comedy-driven, surreal world of Heybot! No detailed information about her personality traits, motivations, personal development, or notable abilities is available in accessible records. She functions as a recurring supporting figure, contributing to the show's parody of horror tropes within its larger joke-centered narrative.