Yelgrun

Yelgrun 2
Yelgrun 2 was a Vorta overseer in the service of the Dominion in 2374. He was sent to negotiate with a group of Ferengi for the safe return of Ishka, the paramour of Grand Nagus Zek, in exchange for Keevan, a Vorta who had been captured by Starfleet several months earlier. Though outwardly affable, Yelgrun was also casually threatening when things didn't go his way.

He agreed to meet Quark and his team on the abandoned Empok Nor, but he brought along an entire platoon of Jem'Hadar guards as protection against the six Ferengi. He quickly got annoyed by the Ferengi's attempts to stall, however. Nevertheless, he agreed to send all of his Jem'Hadar (save two guards) away from the station as a gesture of goodwill (and to even the score to keep the Dominion from getting the drop on the Ferengi).

The Ferengi had ideas other than a simple prisoner exchange, however. Yelgrun was tricked into releasing Ishka, and the two Jem'Hadar guards protecting him were killed. Yelgrun himself was captured and taken back to Deep Space 9 to be handed over to Starfleet. (DS9: "The Magnificent Ferengi")