Emi was a female humanoid of an unnamed species who performed oo-mox on Quark while negotiating with him for self-sealing stem bolts for her family's companies. Quark was enjoying himself so much that he tried to postpone the deal since her family would not return to the station for nine more days. He was hoping that Emi would continue to give him oo-mox.
Their negotiations were not completed when they were interrupted by the arrival of Grand Nagus Zek, who had been altered by the Prophets during a trip through the Bajoran wormhole. Emi ended up purchasing stem bolts from Zek for wholesale prices. (DS9: "Prophet Motive")