Ysanne Fell was a Human female who lived in the 22nd century. In 2164, she represented Alpha Centauri at the ambassadorial conference on Babel Station regarding Rigel's and Vega IX's admission into the United Federation of Planets. Fell was a dedicated Planetarist, believing that a centralized government would destroy the autonomy and culture of the worlds in the Federation. (ENT - Rise of the Federation novel: Tower of Babel)