Loona is a hellhound with a wolf-like appearance. She has a pointed, doglike muzzle with sharp and pointy teeth, and a dark grey nose.

Her fur is white with grey encircling her face, grey patches on her shoulders, and long, voluminous silver hair swept to the side to reveal her dark grey ears.

Her outfit features a large, spiked black choker around her neck. Her tattered grey, off-the-shoulder crop-top is held up at the neckline by a series of crisscross spaghetti-straps.