Ok.
Check the Klyros Lore thread, i posted some basics of Klyros Past (how they left their homeworld. One important thing
about klyros atheism: they are not denied Gods existence - Gods are common/obvious thing for PlaneShift universe (as magic), everybody knows that they exist and they can rule the world, BUT... So, Klyron know that Gods exist, but they don't want to obey no one of them because of klyros exaggerated Pride. They can easily choose to die then to knock under...
Don't sure with that demon-assassin... Why he don't completeв his task? How he supposed to wipe out Klyros race: by simple phisical annihilation (fire magic, demons force, etc) - then demon get enormous magic-physics skills, strained for demon (or i'm mistaken?); or he suppose to send on klyros plague, pestilence, persuade other Yliakim race to drive out klyros for their non-human looking/traditions - then demon get artful mind, middle magic skill, clever secret manner of acting - this match demon's "assassin" mission, but don,t allow this demon to make those "Magic fist"...
Or may be firstly he supposed to make this "Shadow War" with klyros race, but then he was revealed by some Klyros and other race heros--> there was a famous Great Battle where many of klyroses die for their Freedome and Future of Klyros nation, Demon skittled away all of his furioku (

)--->Eklato bay was the place of Battle, Floating Island was the result of demon's and klyros simultaneous magic stikes... So, Demon-Assassin was defeated and klyron avouched their rights for living in Yliakim...
...i'm crying, somebody give me a hankie... 