Aath-saa resemble snakes with small arms. They average just over ten feet long.
The aath-saa worlds were united under a powerful dynastic empire that had been in decline and suffering growing desent when the Alliance was founded.
Political movements among the citizenry forced the imperial government to join the Alliance so that it would have to abide by the Alliance Charter. Though the family dynasties remain important, gradually they lost much of their absolute authority as the aath-saa worlds became more democratic.