Madam was a white she-cat of the British Shorthair breed with white fur, a pink nose, and orange eyes. She was a young member of the community of Underground cats and lived there with Francis, Eloi, and all the others.
Madam and Francis turned into lovers and she was the very first female that Francis mated with. Their meetings were centered around passion and desire and Francis learned how sharp the claws of a female can be after mating. As a result she became pregnant with Francis's first litter.
Madam, as the other cats of the community, was victim of the mysterious mass murdering. Francis was shocked to find her body and her memory remained dug deeply into his mind.
Years later Junior explores the underground cave where the cats lived and makes the disturbing discovery of the bones of Madam, with also the small bones of the unborn kits (his half-kins).