The Osprey represented a Nebulon-B2 frigate deployed by the Empire, notably by the group known as the Prophets of the Dark Side. Its initial deployment occurred when Maarek Stele, in a setup orchestrated by Admiral Harkov, requested reinforcements. A subsequent appearance took place when the Immobilizer 418 cruiser Harpago, led by Grand Admiral Zaarin, attempted to ensnare a TIE/D Defender squadron that included Darth Vader among its pilots. Darth Vader was rescued by the Osprey, and following the destruction of the Harpago, it fled into hyperspace.