Enmu is a major antagonist in the anime series Kimetsu no Yaiba, also known as Demon Slayer. He is a member of the Twelve Kizuki, holding the position of Lower Rank One. Known for his sadistic nature and cunning intelligence, Enmu is a demon who thrives on inflicting psychological torture on his victims, often blending dreams and reality to trap and manipulate them. He plays a pivotal role during the Mugen Train Arc, where he attempts to kill the protagonist Tanjiro and his companions while they are aboard a train.