Shiala is an asari commando, a powerful biotic and former follower of Matriarch Benezia. Commander Shepard's team encounters her on Feros. Shiala was an acolyte of Matriarch Benezia for nearly two centuries, respecting her wisdom and biotic ability. Along with many of Benezia's followers, Shiala accompanied the matriarch aboard Sovereign as Benezia tried to guide Saren Arterius down a gentler path. When Benezia failed and became indoctrinated, Shiala also became one of Saren's thralls.