Mad Cool is out of Mad About You (Indian Ridge), who won three races from 15 starts, including the Gr.3 Gladness S. and the Listed Garnet Stakes, and was placed four times at Group 1 level in Ireland and France. He is her seventh foal, and all seven have won. His half-siblings include A Ma Chere (Kodiac), third in the Gr.3 Silver Flash S., Soul Seeker (Oasis Dream), winner of eight 5f handicaps in Britain, and the winning gelding Partisan Hero (Muhaarar).

Second dam Irresistible Jewel (Danehill) won the Gr.2 Ribblesdale S. and the Gr.3 Blandford S. and was placed in the Gr.1 Prix de l'Opera. She has produced four other winners, among them Princess Highway (Street Cry), also a winner of the Gr.2 Ribblesdale S. and third in the Gr.1 Irish Oaks, and Royal Diamond (King's Best), winner of the Gr.1 Irish St. Leger.

The third dam In Anticipation (Sadler's Wells) won twice and produced seven other winners, headed by the Listed winner Diamond Trim (Highest Honor), dam of the dual Group 3 winner Profound Beauty, and the sire Legal Jousting (Indian Ridge), twice placed at Group 3 level.

Mad About You also has the unraced three-year-old filly Campari Soda (Showcasing) and visited Sioux Nation in 2023.