The Brothers of Light was the name given to an ancient group of non-corporeal beings who predated both the Organians and the Metrons. They had evolved from physical beings, but had long forgotten their original forms and names. These lifeforms exiled a group of their fellow beings, called the dithparu or "Night Spirits", to the Well of Souls on an unnamed planet over 6000 years prior to the 24th century, deeming them to be "evil, darkness, the night side of their own souls." (TLE novel: Well of Souls)