Mary Cochran  

, メアリー・コクラン

Mary is an American fashionista who moved from San Francisco to Japan in pursuit of fame. Despite being foreign, she struggles with understanding Japanese customs, particularly those related to the entertainment industry. She values being treated like a noblewoman and craves attention. However, despite her success, she still feels lonely and often calls out for her mother when asleep. Mary enjoys eating high-quality foods. In Cinderella Girls Theater skits, Mary portrays herself as an adult actress who seeks to be the center of attention and viewed as a mature woman. She believes she is the cutest and sexiest among her friends, tries to act more grown up than she actually is, and claims to be more popular than most idols. However, these actions often backfire on her. Although aware that she hasn't hit puberty yet, Mary is still upset about her bust size compared to other idols like Satomi Sakakibara. She appears to have a close friendship with Yui Ohtsuki and sees Risa Matoba as a mentor. Additionally, Honami Nishikawa and Hitomi Niwa share a mother-daughter relationship.