Ghastly's usual attire consists of a a skin-tight rubber suit, along with a pair of elbow length latex gloves, high-heeled boots, and a pair of black goggles that reveal blue eyes. She has red hair with a bun in it, and her skin is very pale. When her hair is down, it is shown to be very long. She is taller than most of the characters, such as General Skarr, who was shown to only be slightly shorter than the average adult in The Grim Adventures of Billy & Mandy.