The IKS Ro'Kronos was a Klingon Defense Force starship in service in the 2370s. It was commanded by Ganok, son of Ganthet and Melik was its first officer. In 2375, the Ro'Kronos lead a fleet to Marcan V to replace those destroyed in a battle with the Jem'Hadar. They discovered Klag, son of M'Raq, as well as the wreckage of the IKS Pagh and a Dominion starship. Seeing the Jem'Hadar and the Vorta Klag had killed, the Ro'Kronos crew hailed Klag as the "Hero of Marcan V". (ST short story: "A Song Well Sung", KE novel: A Burning House)