Retribution existed as a Star Destroyer of the Imperial-class.
This vessel was assigned to the Qeimet fleet, acting as a central hub for the TIE bombers belonging to Scimitar assault wing. During the time of the Hook Nebula campaign, the Retribution was primarily used to support the TIE bombers, enabling them to complete their main objectives.
Sometime after the Battle of Endor, Retribution was discovered to be under the control of Moff Lobax Resuun from the Tamarin sector. It became a key part of his personal fleet and acted as Resuun's command center. The governor was able to freely traverse the sector due to having a Star Destroyer as his base.