Lady is a carefree individual who works as a nurse at the local dentist but resents children. Recovering from her childhood abandonment issues, she establishes a strong connection with Aoyama and his quirks as the story progresses, revealing her ability to transform inanimate objects into Penguins during the day and Bats at night. She also has a habit of singing/humming her self-made nursery rhymes whenever she performs a monotonous task.