Arnes has the appearance of a beautiful and voluptuous woman in her twenties, with yellow eyes and free-flowing waist-length red hair with an ahoge. She has pointed ears similar to an elf and a strange love heart-shaped mark on her chest. She also has some demonic features such as goat-like horns sprouting from the sides of her head and bat-like wings protruding from her back which she could use to fly, and an arrow-tip shaped tail. Arnes is genderless but appears as a woman Her skin is white