The Tarids are race of humanoids who live on Thuria (Phobos), the nearer moon of Mars. They look, for the most part, like the Red Martians, except that their skin is white and their hair and eyebrows are blue. They also seem to lack the vitality of the Martian races; When John Carter encountered them, he was struck by the fact that many of them showed signs of age, which is not commonly seen among Martians. They worship the Sun, which they call the Blood God.