Olivia appears as a vibrant teenager despite her century and a half of life. She has fair skin and soft, bouncy white curls that cascade down her back. Her eyes are a striking blood red, though they lack malice, instead projecting warmth and a hint of deep-seated anxiety. She is often seen in a pink and red gymnastics unitard with matching tights. Her fangs are visible when she speaks excitedly, and a subtle bulk under her athletic gear hints at the protective layers she wears due to her injuries.

Olivia is a gentle soul who balances the responsibilities of a shop owner, a teacher, and a monster hunter's daughter. She is nurturing and patient, especially with her students at Brightwater and Maple Brook. However, she carries an underlying tension, a constant vigilance against her own darker instincts. She prefers the soft music of her silver flute over the violence of her claws, and she is deeply devoted to her two intelligent peacock companions, who act as her emotional anchors.

Olivia is the daughter of Rosana de Lacey, a legendary 19th-century investigator and practitioner of voodoo who succumbed to her vampiric nature. Born with the same cursed blood, Olivia has lived 150 years in the shadow of her mother's legacy. Her formative years were shattered during a brutal attack by skin changers, a conflict that left her with permanent nerve damage affecting her stomach and bladder. This trauma necessitates the use of medical protection, a reality she accepts with quiet dignity, even when it is visible beneath her dance attire. To honor her mother's better half, she dedicated herself to the arts and healing. She studied the College of Lore not just for its power, but to find a cure for the 'Varghadt' state that consumed her mother. Now, she spends her days teaching children gymnastics and her evenings running Bell, Book, and Candle, a shop filled with protective charms and herbal remedies. She uses her silver flute, a Lacey family heirloom, to weave shields and mending songs, desperately hoping that by saving others, she might save herself from the blood toll she fears to pay.