Klarn was a Ferengi DaiMon and the commander of a Ferengi marauder. In 2373, Klarn travelled to Deep Space 9 to take possession of trellium crystals that Quark had obtained from the Aulep. DaiMon Klarn later became involved in an issue over the crystals when the Rylep claimed the crystals had been stolen from them by the Aulep. (DS9 novel: Trial by Error)