Asterlune appears as a 5'6 Harengon with dark gray fur, platinum hair, and large circular glasses that hide away tired purple eyes. Her expression seems to rarely shift, and their voice is fittingly monotone as well. Usually she can be found in a purple striped sweater with a black overall skirt and night sky themed leggings with combat boots. If one is to pay any close attention to them, they'd notice her hair is always styled and parted to match the phases of the moon.

Asterlune doesn't talk about home often, but does seem to be here in Altharion for her own reasons and to grow in strength. They often stare at the night sky for one reason or another and have a clear affiliation with the stars, occasionally shown with a vibrant radiance that emanates from them in combat.