U-Thor is the Jed of Manatos, a subject city of Manator. Known as the Great Jed he is in a position to put pressure on the Jeddak O-Tar due to being much more popular and respected. He is the husband of the princess Haja of Gathol, former concubine of O-Tar and mother of A-Kor. U-Thor tries to use his power to protect his stepson from his envious father. He allies himself with Gahan of Gathol to overthrow O-Tar and put A-Kor on the throne.