History:
Distant Past
At some point in the planet's distant past, it was blasted out of its original star system by the supernova which then led to the creation of the Omarion Nebula. Although it no longer had a fixed orbit, the planet stayed within the confines of the nebula.

Eventually the Founders came across this seemingly dead planet in an otherwise unimportant nebula after having experienced years of persecution from other races. It was from this world that the Founders sought to impose order on the Gamma Quadrant and launched attacks on other planets, bringing them under the control of the Dominion. In their efforts to subjugate other worlds, the Founders would create two races of servants, the Jem'Hadar who acted as the soldiers of their empire, and the Vorta who oversaw the Jem'Hadar. While expanding their empire, the Founders also sent out infants of their kind across the galaxy. The infants were intended to gather information about other planets and cultures before being drawn back to the nebula and their homeworld.

24th Century
The planet within the Omarion Nebula would remain the home of the Founders until 2371 when the Cardassian Obsidian Order and Romulan Tal Shiar discovered its location and sent a fleet of cloaked ships to bombard its surface. It was hoped the attack would destablize the Dominion; however, the Founders learned of the offensive and had already abandoned the planet by the time the fleet arrived.

Geography
Having experienced the shockwave of a supernova, almost nothing was to remain of the planet's original biosphere when it was cast adrift in space. Over time, most of the surface water evaporated, leaving a dry desolate landscape. Where they could, the Founders did attempt to keep some water on the planet's surface although it remained in insufficient quantities to produce lakes or seas.

While cold and lacking in water, the planet was able to support flora and primitve fauna. In various locations there was a water reclamation plant, an air circulation plant, and several heat exchangers which all worked together to sustain the planet and any life upon it. The water and heat engineering works drew upon subterranean sources. Thirty percent of the planet's crust was destroyed by weapons fire from warships operated by the Cardassian Obsidian Order and the Romulan Tal Shiar in 2371, during the Battle of the Omarion Nebula. The Founders had previously evacuated the planet, and deliberately allowed the attack so as to ambush the two intelligence agencies and render them incapable of resisting the planned conquest of their respective empires.

Second Founders' homeworld
The new Founders' homeworld was also located in the Gamma Quadrant, though its exact coordinates were kept secret. In 2372, the Great Link appeared to cover much of the surface of this planet, leaving very little landmass. The Defiant was guided by the Jem'Hadar to this planet in 2372 when Odo was compelled to return to the Link to face judgment for killing another Changeling. Odo again returned to the planet after the end of the Dominion War in order to cure the morphogenic virus infecting the Link and convince them that the solids were no longer a threat to them.

The Founders new homeworld was situated within Dominion space, almost as distant as possible from the Bajoran wormhole, about six-thousand light-years from the Omarion Nebula.

In 2372 the Founders secretly infected Odo with a terrible illness which would necessitate Odo's return to the Great Link where the Founders intended to put him on trial for his killing of another Changeling the previous year. The USS Defiant entered the Gamma Quadrant to take Odo to the Founders and put out a hail requesting Dominion assistance. A Jem'Hadar escort arrived and a Founder and several Jem'Hadar beamed aboard the Defiant and attached a device to the starship's helm to prevent it recording the route to the homeworld, and thus preventing the Alpha Quadrant races attempting another attack on the planet. The Jem'Hadar Amat'igan piloted the Defiant for the journey to and from the planet.

Once the Defiant arrived at the planet a small group beamed down to the planet and Odo was taken into the Great Link. There Odo was cured, judged, and punished, the Founders effected him from the Link as a solid, he could no longer shape shift. Unknown to the Founders or Odo at the time Odo's contact with the Great Link infected the founders with a morphogenic virus engineered by Section 31 to kill the Changelings.

Following the Dominion War Odo returned to the new homeworld to cure his people of the morphogenic virus and live with them. He was joined by Kira Nerys who beamed down to the planet to give him a final farewell as he joined the Link.

The Link was generally unreceptive to Odo's ideas of bringing more peace to the Dominion. Odo remained an outsider and spent much of his time in solid form on a rocky island beside the link. He received verbal communications from Laas when the Link made decisions. In December of 2376 the great Link learned their creator god, the Progenitor, had been killed. Feeling guilty and directionless, the Founders rose up from their new homeworld and fled out into space, seeking solitude. This left just Odo and Laas on the now barren planet, and in control of the Dominion.