0² resembles Zero in appearance, while also possessing angelic traits. It has a bulbous white sphere for a body and a large, dark red eye (as opposed to Zero's blood-red eye), with a black iris and a white pupil in its center (while Zero had a dark red iris with a pinprick black pupil). However, while Zero's body was completely round, the bottom of 0²'s body is slightly flat with a tiny spike or tail on the bottom. The most demonic being in the universe being made of pure darkness and suffering 