Sharia al-Shamsi, Scourge of the underdark

Sharia al-Shamsi is orcish warrior from Vath. After looking for his missing sister for years he finally found a lead which led him and a couple of other adventurers to the lair of an aboleth. While there fighting cultists and the monsters on the island he eventually met Krelzoam an ancient aboleth and slew him. In the aftermath of the fight he found the remains of his sister realizing she was a sacrifice and left for the underdark and founded the sunshields an organization devoted to ridding the world of aberrations.