Harleep in human form is an incredibly handsome man with a tall and muscular physique. His long brown hair falls in waves to his shoulders, complimenting his attractive face with a sharp jawline and piercing brown eyes. His skin is a rich olive colour, and a pair of curved horns protrude from his forehead. In his true form, Harleep appears as a demon incubus. He becomes taller with much more muscle, having wings, horns and a prehensile demon tail.