Mysterious woman with whom Sisko fell in love, who was really a telepathic projection created by Nidell, wife of Gideon Seyetik.
Fenna is a woman Benjamin Sisko meets on the Promenade in Second Sight, his first romance since Jennifer's death. She appears and vanishes without warning, and Odo can find no record of her aboard the station.
At dinner aboard the Prometheus, Sisko meets Nidell, the wife of terraformer Gideon Seyetik, who looks exactly like Fenna but does not know him. Fenna is a telepathic projection of Nidell's unhappiness in a marriage her people cannot end, and it is killing her. When Seyetik dies reigniting a star, Fenna disappears and Nidell returns home with no memory of Sisko.