I diverged.
Raajit was a sorcerer/ess (it was never made clear) on Earth, who travelled to Athas in the early Middle Ages, taking with them several villages to begin populating Athas. Their goal was to work on and complete the Godhead ritual in peace and quiet. Humans originally worked in relative harmony with the planet’s inhabitants, the Thri-Kreen, though there were farmer vs hunter/gatherer conflicts. When Raajit eventually came to the conclusion that they could not use Thri-Kreen to power their ritual, they had no more use for them. Champions were created and the Thri-Kreen were driven off the Tablelands (for the most part) to allow for more rapid human expansion. (My version of the Cleansing Wars). During the wars, Raajit and the Champions created variants of humanity to fulfill particular roles in the conflict - Elves, Dwarves, Gith, Giants, Hoblytan. Some hundred or more years later, Raajit was ready to attempt Godhood, but the Champions, realising that this meant the death of most of Humanity to ‘feed’ the ritual, rebelled and Raajit was defeated / imprisoned - this battle was the event that ‘defiled’ Athas and turned it into the desert it is now. (My version of end of the Green Age). The Champions / Dragon Kings as they now were, fragmented and settled in their cities to deal with the devastation of the planet - and many promptly began work to replicate the godhood ritual for themselves.
My players, spaceship borne travelers from the ‘modern world’ arrived and were promptly comprehensively turned over by Nibenay. It took them four (real time!) years before they felt strong enough to try Athas again…When they arrived, Hamanu had already destroyed Yaramuke, Kaud-ma had failed an attempt at Godhood, Dregoth had been foiled in his attempt (and was now a Lich), Kalak was holed up wounded in the Ziggurat. Andropinis had returned and ruled Balic Raam had Alalech-re and … and Raajit was still trying to get free. There is still a massive bounty for any captured / killed offworlders, and the planet is protected by a deadly magical / psionic barrier. The players always have to go ‘disguised’ and the use of any ‘technology’ attracts the sort of attention that ends with Dragon Kings / Templars poking your corpse.
I run a heroic type campaign so, over the years (I’ve been running for over 30 years now) players have been involved in taking down Dregoth (with Hamanu’s help), finishing off Kalak (he was wounded…) and being around when Hamanu and Nibenay were forced to ally to deal with the return of a rather vengeful Raajit.
Despite my playing fast and loose with canon, I have used / integrated a massive amount of material from this site and would like to record my gratitude to all those who have built it into the fabulous resource it is today. In my ‘scenario’ the age of the Dragon Kings is coming to an end and they aren’t all happy about it, though some, Hamanu, for example, recognises that their time is ending. But if and when it does, out in the wider world, there are Thri-Kreen Khanates who remember the slaughter of the Cleansing Wars, and there are still many millions of them, out on the plains…