Shiho Miyano, known as Sherry within the Black Organization, is a brilliant scientist and a pivotal character in the series Detective Conan. Initially working on the APTX 4869 drug which inadvertently shrinks Shinichi Kudo into Conan Edogawa, Shiho later rebels against the organization after her sister's murder. She takes the drug herself, reverting to a child's form and adopting the alias Ai Haibara. As Ai, she aids Conan with her scientific expertise and insider knowledge, while seeking redemption and safety from her former employers.