Yifay was a Brunali woman living in the 24th century. She was the wife of Leucon and mother of Icheb. Yifay consented to having her unborn son genetically altered to produce anti-Borg pathogens. In 2375, when Icheb was still a child, Yifay and Leucon sent him to the Borg in order to infect them with the pathogen. In this manner, Yifay and her husband hoped to stem the tide of Borg invasions that were devastating their world. Yifay was played by Tracey Ellis.