The Exret

They are a xenophobic people who will kill all those who attempt contact. In one episode, they attempt to kill Letva in her attempt to see her family. The Exert people are told lies about other civilizations, by their government, and thus they are plunged into a pit of solitude. The crew, with the help from the P.U.A. (Planetary United Alliance) free Exra 3 from its government.