Ress is one of the Martian colonists who crash-landed on Earth some 250 million years ago. Clever and attractive, she sees others (including her sister, Kellin) only as pawns for her to use in her schemes and has no qualms about shedding their blood. She is often openly manipulative, "People bend better," she once told Petara, "when they know you're trying to bend 'em." Dangerous with a soft facade, she apparently strangled both her parents to death.
Her name has no meaning, but she calculated its soft simple sound to be the most appealing to her pawns.
At the time of the landing, Ress was 9 in Martian years (in the range of 16-18 in Earth years).