A humanoid race from the Gamma Quadrant, the Jem'Hadar are the military arm of the Dominion and one of the most powerful military forces in the galaxy. They were genetically-engineered to serve as warriors for the Dominion and were feared by races in and around Dominion space as the brutal face of Dominion oppression. They were engineered to be loyal to the Founders, are directly supervised and led by the Vorta, and are kept in check by a programmed addiction to the drug ketracel-white.