Kattell was a Cardassian woman fabricated by the Cardassian spy Seska.

In 2371, USS Voyager's EMH discovered that Seska's blood chemistry was not consistent with that of a Bajoran. Her cover story was that she suffered from Orkett's disease as a child during the Occupation of Bajor, and that she had received a bone marrow transplant from a Cardassian woman named Kattell. (VOY: "State of Flux")