A faction of Jedi fought against a faction of Dark Jedi and Sith on the planet Kesh after crash landing there sometime after 6900 BBY. The rival groups fought one another on the world, but their actions brought untold harm to the native Keshiri species, an event that came to be know as the Great Calamity. All but one combatant, the Sith Lord Remulus Dreypa, agreed to end the hostilities for the sake of the Keshiri. For his recalcitrance, Dreypa was sealed in an oubliette. The remaining Force users merged their ranks to form the Doomed, taking it as their task to watch over the Keshiri.