Almost nothing is known of Xelaya. According to Lieutenant Alara Kitan, the gravitational pull is many times "the planetary average," which gives Xelayans super-human strength in Earth-like environments.
Xelayans tend to be peace-loving: they regard the military as an unfortunate necessity and Humans as brutish. Therefore, despite their tremendous physical gifts, few Xelayans join the military.
The Xelayan people identify sweetened gupsela with depression.
Alara Kitan has a framed picture of Xelaya above her desk, likely as a reminder of her homeworld.