Thane is a mysterious drell assassin who is terminally ill from a disease known as Kepral's Syndrome, which is exclusive to drell due to their physiology. While a coldblooded killer, Thane possesses a conscience that struggles against his own profession. Shepard may recruit him on the asari-dominated world of Ilium for the suicide mission in "Mass Effect 2". At the time of his recruitment, Thane states he has nothing left to lose, and he hopes to right many wrongs he has found in the galaxy before his death. Thane Krios is a possible romantic interest for a female Shepard.