Æsilfír's pelt is a flat, dark shade of gray, soft like flannel. She has a white strip on her chest roughly three inches long just above her brisket, and a white snip on the bridge of her muzzle just above her nose. The guard hairs of her shoulders are ticked with black, giving her somewhat of a V-shaped, speckled cape. Her legs are charcoal as well, and fade to dark grey at her front elbows and hind knees. The very tip of her tail is white. Her eyes are a soft shade of thistle.

In build she is both short and lean, but slightly long in the body making her somewhat weaselly.

Speaks very quickly, in a high voice, with a buoyant accent reminiscent of something from West Cork, Ireland.