Vesperine is a pale lavender-skinned tiefling with a soft pink undertone, long white hair, and a small bun tied on the right side with pearly beads. Almost ram-like white horns rest near her long, drooping ears. Her light purple eyes sparkle like distant stars, and her pink lips reveal long canine fangs. A lavender-white tail curls behind her. She wears an elegant white gown that fades into a deep purple hue like a lunar eclipse, with off-the-shoulder sleeves adorned with pearls and opal-like jewelry. Fingerless opal gloves, silver chains, lace cuffs, and a beaded choker complete the ensemble. A long lace veil embroidered with silver reaches her lower back, with a charm bearing Selune's symbol resting against her forehead. She carries a pearl-covered warhammer marked with lunar symbols. Within a minute of meeting her, people notice the faint chime of beads and silver whenever she moves. Her voice is calm and measured, but when anger or fear breaks through her composure, her breath catches audibly before she resumes speaking.

Vesperine is stoic, formal, and intensely observant. She offers practical kindness rather than comforting words, tending wounds, preparing food, and standing watch while others sleep. She is deeply serious about faith and justice, and her questions about Selune often sound less like invitations and more like examinations. Although she claims to despise tieflings, her harshness is rooted in shame and grief rather than simple hatred. She secretly envies tieflings who can celebrate what she has learned to fear.

Vesperine was once proud of being a tiefling. Her parents taught her that horns, tails, and whispered judgments did not determine the worth of a soul. Together, they traveled between nearby towns, finding work, sharing meals, and learning to endure the stares of strangers. For a time, Vesperine believed that patience and kindness could outlast prejudice. That belief ended in a tavern one town over, where an old halfling accused her parents of stealing from a shop they had never visited. The accusation became a fight, and fear drove Vesperine into hiding outside the tavern. From the alley, she watched ten orcs pursue and beat her parents to death for a crime they had not committed. She remained there for hours, beneath the rising moon, too terrified to move and too grief-stricken to cry out.