Standing just over 5 ft. tall and weighing about 120 pounds, Wren's size-to-strength ratio more than lives up to her namesake. Her light brown hair is dyed with frosted tips, worn at shoulder length with short bangs over her forehead.

She wears a practical sleeveless bodysuit with capri length pant legs, though you wouldn't know that by looking at her thanks to the matching boots she wears that climb to calf height. Her hands are protected by a pair of fingerless gloves, the palms of which are inscribed with matching stitching reminiscent of ancient runes.

She wears a long, loose jacket over the bodysuit, which covers her arms and reaches down to her knees. It doesn't look designed for warmth, and cannot be clasped shut, lacking buttons or zippers entirely down the front.

There is a spot on the left sleeve of her jacket that is cleaner than the rest of it, with traces of stitching alluding to a patch that has been torn off.