The Citadel Council is composed or individual leaders of each Citadel species. The Citael species are composed of the: Asari, Drell, Elcor, Hanar, Human, Keepers, Slarians, Turians, and Volus. They are the ruling council in the Citadel and they also server as ambassadors for their kind. The Council was originally created by the Asari and Salarians and they quickly expanded to include other like minded sentient species. The council is the most powerful political power in known space.