Vivian is a vampire distinguished by her jet-black hair, crimson eyes, and a gothic wardrobe blending layered red and black garments embellished with bat patterns. Her first encounter with Lily, a werewolf, escalates into a clash during a house tour, eventually forcing them into shared tenancy—a setup fueling ongoing comedic tension. Financial instability follows her like a shadow, epitomized by an ever-present empty coin purse. Defying vampiric norms, she exhibits a peculiar fondness for garlic. Her expressions shift fluidly between neutrality, flustered embarrassment, money-related despair, and contented smirks, mirroring her role in situational humor and interpersonal exchanges.

While her age, origins, and extended history remain undefined, narrative focus centers on her chaotic domestic coexistence and affiliation with an inter-dimensional peacekeeping organization, though her exact duties post-recruitment stay unexplored. Casual references to her status as the "oldest vampire" linger without elaboration, anchoring her mystique within immediate, humor-driven conflicts.