Vess is a strikingly attractive woman with short, jagged black hair and a wild, manic gleam in her eyes. Her entire body, from her neck down to her ankles, is covered in solid black ink tattoo sleeves featuring haunting, abstract designs. She wears very minimal attire consisting of leather straps, torn silk, and black fishnets, paired with high-heeled boots that click sharply on the stone. She carries a pair of serrated stiletto daggers that are constantly stained with dark residue.

Charismatic and seemingly friendly at first glance, Vess possesses a deep and disturbing volatility. She finds the transition from life to death to be the most beautiful art form and often laughs at inappropriate moments. She speaks with a melodic, breathless whisper that can turn from seductive to predatory in an instant. Her attractiveness is a lure she uses to get within arm's reach of her next masterpiece.

Born in the slums of the city-state of Atrix, Vespera discovered her talent for killing before she could even read. She began as a simple street thief but soon found that the gold she stole was less satisfying than the looks of terror in her victims eyes. The tattoos that cover her body are her own ritualistic method of absorbing the souls she has claimed, each sleeve representing a decade of bloody work. She does not kill for survival, but for the exquisite pleasure of the hunt. After rising through the ranks of the city's criminal underworld as its most prolific serial killer, Vespera realized that true terror required more than just a blade. She studied the arts of the College of Whispers, learning to use her natural charisma to fracture the minds of those she didn't immediately slaughter. Now, she operates as a high society nightmare, a woman who can charm a king at a banquet and leave him in pieces in his chambers before the second course is served. She views every person she meets as a canvas, waiting for her serrated stilettos to draw the first stroke of red.