Yienek was a Romulan and member of the military during the Earth-Romulan War. In the year 2157, Yienek served as the helmsman aboard the IRW Raon when it engaged the Earth starship Enterprise near Galorndon Core. After their starship was severely damaged, Commander Chulak ordered Yienek to set the Raon om a ramming course towards the planet. Yienek and everyone else aboard the Raon was killed when the vessel struck the planet. (ENT - The Romulan War novel: To Brave the Storm)