Kei was a Yevethan female, the first mate of Nil Spaar, and the darna of his family. Her birth-cask produced two nitakka—males—and one marasi—female—but eventually succumbed to the gray death. Spaar kept a breedery alcove at the royal palaces in Giat Nor empty in her honor and to assuage her jealousy of his many other mates. Kei accompanied her mate to Coruscant aboard the Aramadia, and was last heard of aboard the Pride of Yevetha.