(coexisting on another dimensional plane)
Quark was a male Ferengi and the owner of a bar on Terok Nor. A somewhat subdued individual, Quark bravely helped a number of Terrans escape from the control of the Klingon-Cardassian Alliance by smuggling them onto departing ships.
In 2370, he heard about the arrival of two people from another universe, including another Kira Nerys. Kira came to him wanting to procure some time with a transporter in order to return to her universe, while informing him of his counterpart. The discussion was interrupted by Elim Garak, however, when his role in the attempted escape of a Human slave was discovered and he was arrested immediately. Despite giving up other conspirators and making a personal plea to Intendant Kira Nerys, she ordered his immediate execution, but for it to be a "quick death" and for him not to suffer. (DS9: "Crossover")