Aison was a Third Age nation which shared borders with Remon in the northwest and Yamato in the northeast after the Cataclysm. Its capital was Myridia, and its human lands were ruled by High Prophet Xerathas d'Zarnagon in its last years. After a millennium-long peace, the kingdom was initially conquered by the Yamato Empire until the Grey Cult took over in the aftermath of the Cataclysm and turned it into a theocracy centered around the Godslayer. Since then the cult tried to unite the continent and the lands of the former kingdom by both diplomacy and force. The Catastrophe that ushered in the Fourth Age ended Aison which was split by magical forces. Its successor states are as of now unknown.