Loona is a tall, anthropomorphic hellhound from the animated series Helluva Boss. She has a striking wolf-like appearance with white and gray fur, sharp canine features, and expressive red eyes that often convey annoyance, sarcasm, or boredom. Her long, shaggy silver-gray hair partially covers one side of her face, giving her a rebellious and edgy look.

In this royal-inspired design, Loona is portrayed as a dark queen or gothic princess. She wears a black dress with a fitted corset-style bodice, a layered skirt, and thigh-high stockings that emphasize her confident, commanding presence. A jeweled crown sits atop her head, suggesting authority and status, while spiked accessories around her neck, arms, and wrists maintain the punk-inspired aesthetic that fits her personality.