Quori

Forty thousand years ago, the quori opened the gates between Dal Quor, the Region of Dreams, and nearly overran the world of Eberron. It was only through the intervention of dragons, who provided arcane technologies to the giants of Xen'drik, that the plane of Dal Quor was shunted away from its rotation so that it could never again become coterminous with the material plane.
The quori are no longer completely cut off from Eberron, however. About 1,800 years ago (−802 YK), a rebel group of 67 quori escaped Dal Quor and merged with the bodies of willing human monks of the nation of Adar on the continent of Sarlona, a continent considered to be the cradle of humanity. These quori/human mergings became a true-breeding race known as the Kalashtar.
Three centuries later, other members of the quori who had darker plans began to invade Eberron through the dreams of its people. Finding humans far more susceptible to their powers, the quori assaulted the minds of the peoples of the twelve nations of Sarlona. The quori manipulated the humans to bring about wars and instability, and even directed their breeding in order to craft the perfect vessels to hold their spirits.
After another two hundred years, they had perfected their breeding methods and powers of psychic manipulation such that they could enter the world through these vessels despite their home plane's remoteness. Predominantly human with some elf and fiend ancestry blended in, these so-called "empty vessels" are inhabited and controlled at will by quori hosts. Known as the Inspired, they strive to reopen the portals to Dal Quor under the auspices of an organization known as the Dreaming Dark.

Type

Secret, Government