ISS Gryphon

In the mirror universe, the ISS Gryphon (NCC-94996) was a Terran Empire starship, a  escort in Imperial Starfleet service in the 25th century. 

History
In the year 2409, the Gryphon was part of a flotilla assembled by Captain $𝜇$ in the Badlands. When an Allied ship from the primary universe entered the mirror universe through an interdimensional portal, the Gryphon the other ships engaged it but were defeated. That forced Leeta to intercede but her ship, the, was forced to retreat. The Allied ship proceeded on its course to $𝜇$ unhindered. 

Following the end of the Iconian War in both universes, the Gryphon participated in Admiral Leeta's invasion of primary universe and was part of the fleet attacking Deep Space 9. The Alpha Quadrant Alliance defeated the Terrans and forced their fleet, and $𝜇$, back through an interdimensional portal into their own universe.