Issus was the Goddess of Life Eternal, Daughter of the Lesser Moon, Mother of the Nearer Moon, and the Goddess of Death. All of those titles were false, however. In reality, she is nothing more than an extremely ancient black Martian. Through complicated means she essentialy controlled the entirety of Martian religion. Because of her status she was worshipped by the First Born and the therns. She would eventually meet her end at the hands of her own followers, being literally torn apart by them.