Akiko Tani (谷晶子, Tani Akiko; English TV "Michelle") is the daughter of an unnamed company president. She has been planned a kidnapping with her butler Asō, because her father was always on work which meant that they couldn't spend time with each other, but it turned out wrong, when she got kidnapped again and this time seriously. She had later been saved by Conan and Ran and got back by her father and tells him why she did that. His father then promised her they would go on vacation together.
Her name "谷晶子" can be translated as "Valley Crystal Child".