Vesper has skin the color of deep sea foam and long, dark hair that drifts around her head as if submerged in water. Her eyes are entirely black, lacking iris or pupil, and shadows seem to cling to her movements, making her silhouette appear blurry and shifting.

She is composed and notoriously difficult to rattle. Vesper speaks with a slow, rhythmic cadence that suggests a mind focused on the currents beneath the surface. She values efficiency over morality and finds comfort in the quiet dark.

Vesper was born in a coastal city where the veil between the Shadowfell and the Material Plane is unusually thin. Abandoned as an infant, she was raised by a crew of deep sea smugglers who realized her innate ability to meld with the shadows of the hold. She spent years moving illegal reagents through the darkest docks, her magic maturing alongside her criminal expertise. Eventually, a shipment gone wrong forced her to vanish into the night. Now she wanders as a freelance specialist, selling her unique blend of maritime resilience and shadowy sorcery to the highest bidder. She cares little for the law, having seen how easily it is bent by those with the coin to do so.