Asterion Psári was the High Centurion of Ahlorsath during 1488 DR. He got the position after his father's death and winning the duel between himself and Sidon. He won by using eldritch magic gained from an otherworldy power.
 
During his reign he inprisoned and enslaved his people with the help of the creatures of the Trench of Lopok including an Aboleth. He was eventually defeated by The Bane of Dragons, during the the War on Ahlorsath where he was driven to the Trench. During his battle he tried to summon a Kraken only referenced as the King of the Trackless Depths. But was eventually brought down by his brother Sidon.