After neutralizing Tamayo's drug, Muzan's hair turns white and he grows sharp-toothed mouths on his limbs. Dark-red masses grow from his body, remnants of ancient scars by Yoriichi. Cold-hearted and ruthless, Muzan evades capture for centuries. In battle, his nigh-absolute regeneration and deadly arm and back whips, lined with teeth, make him the strongest demon. Muzan further increases the number of whips he uses by growing 8 whips in total, with 4 on each thigh, to strike his opponent.