Loona is a tall, anthropomorphic gray hellhound known for her sharp tongue, sarcastic humor, and emotionally guarded personality. As the adopted daughter of Blitzo, she works as the receptionist for I.M.P., handling clients while often appearing bored or annoyed. Despite her cold and abrasive exterior, Loona occasionally reveals a softer, more caring side, especially toward those she trusts. She struggles with vulnerability and expressing affection, likely shaped by a difficult past before being adopted. Physically, she has gray and white fur, long hair with darker accents, red eyes, and a lean, wolf-like build. Her usual outfit consists of a black crop top, fingerless gloves, shorts, and a spiked collar, giving her a punk-inspired style. Confident, independent, and fiercely protective when it matters, Loona has become one of the most recognizable and popular characters in the series.