The Romulans in the mirror universe share similar lives to the Remans of the prime universe. They were slaves to the Reman Star Empire. A Rebellion was formed to fight back, and they at that time was aided by the Terran Resistance. When the Terran Empire rose back into power, they at first helped the Romulan rebellion, but when James O'Brien became emperor, they oppressed the Romulans and made an alliance with the Remens. With the rebellion in shambles the remnants joined the Interspecies Resistance.