The daughter of the president of Taylor Toy Company, Samantha Taylor, Madison lives a life of wealth and is watched over by a team of female bodyguards. She has access to a variety of prototype technological gadgets from her mother's company, and supplies Sakura and Keroberos with different communication devices throughout the series. She is depicted as being mature, kindhearted, intelligent, and regularly speaking using more formal verb conjugations and expressions than normally seen in elementary students. She is a talented singer, and is shown performing in various school events. In the anime, her musical ability causes her to be targeted by both the Voice and Song cards.
When she learns of Sakura's new role as a Cardcaptor, she insists that Sakura must wear "special outfits" and begins providing Sakura with the various costumes she wears during her captures as well as accompanying her on missions to record the events with her video camera. She encourages Sakura's love of Li, and later becomes Li Showron's confidante and ally when he falls in love with Sakura.
- Madison is very similar to Bubbles from the Powerpuff Girls and likes her hobbies to video and film her friends air actions.