In the mirror universe, the Talarian Republic was a government state located in the Alpha Quadrant. It was an enemy of the Klingon-Cardassian Alliance. In January 2377, Miles "Smiley" O'Brien, the leader of the Terran Rebellion, sent the Defiant under the command of Commander Leeta to negotiate with the Talarian Republic in an attempt to create a pact against the Alliance. Leeta was able to convince the Talarians to aid the Rebellion and Endar led his people in a battle with the Alliance at Terok Nor. (DS9 novel: The Soul Key)