A slender and rather muscular Arrancar of medium height and melancholic appearance. He has unkempt black hair of medium length, pale white skin, a black upper lip, very thick eyebrows, and green eyes with a slit-like pupil like a cat's. Part of his bangs fall between his eyes. Green lines emanate from the bottom of his eyes, as if he is crying. His expression almost never changes, he is always frowning. Ulquiorra is very cold, soulless, impassive, or even standing aside. 