Oerson
Prior to the vaeri, Oerson was idyllic, if rather out of touch with reality, as most creatures were less than predatory, most creatures lived peacefully alongside each-other. Then the vaeri came and screwed up the place real good, it would be some centuries before the coming of the "Great Unifier", Ugeniux, forced the psychotic weirdos to get their act together and not completely destroy their planet, this period was known as "The Age of Dark Science".
Afterwards things became relatively quiet, by vaeri standards, with the most notable thing to come after being "The Great Moon Crusade" where vaeri, who had fled to the moon during the troubled times before the Unification, invaded the planet.