The Dominion was a millennia-old interstellar state in the Gamma Quadrant consisting of the Founders, Vorta and Jem’Hadar joined by the Cardassians, Breen, and other species in the Alpha Quadrant. This highly technologically inclined group was found and ruled by the Founders, a group of Changeling shape-shifters. The desires fo the Founders were carried out by the genetically engineered Vorta acting as commanders and diplomats for the Dominion. The Jem’Hadar, forced into drug-induced servitude with Ketracel-white, acted as the soldiers and workers for the Dominion.