Vorta

The Vorta are a humanoid species originating in the Gamma Quadrant. They were genetically engineered by the Founders to act in administrative, scientific and diplomatic capacities within the Dominion. The Vorta are also primarily charged with overseeing the Jem'Hadar soldiers, and the distribution of Ketracel-white.

Both before and during the Dominion War, the crew of Deep Space 9 had dealings with several Vorta. Most notable of these was Weyoun, who represented the Dominion during the period of Cardassian occupation in 2374. (, et. al)