Dominion (Star Trek)

In the Star Trek universe, the Dominion is an interstellar state and military superpower from the Gamma Quadrant, composed of hundreds of dominated alien species. The Dominion is commanded by The Founders, a race of shapeshifters (or Changelings as they are often referred to), responsible for both the creation of the Dominion and all strategic decisions undertaken through its history. The Dominion is administered by the Vorta, clones specifically genetically engineered by the Founders to act as field commanders, administrators, scientists and diplomats. The Jem'Hadar, also engineered by the Founders, are the military arm of the Dominion and one of the most powerful military forces in the galaxy during the Dominion's height.

The Dominion first appeared in season 2, episode 26 "The Jem'Hadar" of the television series Star Trek: Deep Space Nine and ultimately became the primary antagonists of the series until its conclusion. The Dominion waged war on the United Federation of Planets after silently annexing Cardassia in the Alpha Quadrant. The conflict spanned several years and involved many other races including the Klingons and the Romulans.