Atlas is a minor supporting character in the Goddess Girls series that goes to MOA. Although in Greek mythology, he is a titan, in the books he is a godboy.
Not much is known about Atlas' appearance, except that he has bulging muscles, since's he's the school's champion weigth-lifter.
He is often seen with Ares, possibly hinting that he, too, is a bit of a bully. The books don't really explore his personality, but he takes pride in his strength and is good friends with Ares.