Quark was a male Ferengi who owned a bar at Terok Nor. He helped a number of Terran slaves escape the Klingon-Cardassian Alliance by smuggling them onto departing ships. In 2370, Quark met Kira Nerys from another universe, who wanted to return to her own universe via a transporter, offering him latinum in return. Their discussion ended abruptly when Elim Garak was arrested for assisting in helping slaves escape. Intendant Kira Nerys ordered Quark's execution.