Kate Vernon

Actor (Valerie Archer) — Voyager

Canadian-born actress, later Ellen Tigh in Battlestar Galactica, who played Valerie Archer, a member of Species 8472 living in human form, in the Voyager episode In the Flesh.

Kate Vernon is a Canadian-born actress whose credits include Falcon Crest, the film Malcolm X and the role of Ellen Tigh in Battlestar Galactica.
In the fifth-season Voyager episode In the Flesh she played Commander Valerie Archer, apparently a Starfleet officer at the Academy in San Francisco. In truth she is a member of Species 8472, altered to look human and living in a full-scale simulation of Starfleet Headquarters built to train infiltrators.
Chakotay, exploring the habitat in disguise, strikes up a romance with her, and their wary affection helps open the way to a truce between Voyager and her people.