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In the mirror universe, Merdan was a Cardassian gul in the Klingon-Cardassian Alliance. In 2295, he commanded a fleet that attempted to subjugate the Andorians as part of the conquest of the Terran Republic. The Andorians resisted subjugation, and Merdan's fleet had to obliterate most of the planet. (TOS novel: The Sorrows of Empire)