(coexisting on another dimensional plane)
In the mirror universe Arthur Rosslyn was a Terran male. Arthur Rosslyn in the mirror universe was the complete opposite of his prime universe counterpart. In this universe, Rosslyn is kind, brave, noble and compassionate. He was one of a small group of Terrans, along with Jamar Jackson, who belived his people should of formed a Federation-like Galactic Commonwealth of Planets instead of reforming the Terran Empire. This faction had support from Emperor Miles O'Brien until he was killed by his son James.