YMMV / Demon Slayer: Kimetsu No Yaiba - Mugen Train Arc

• Complete Monster: Enmu is Lower Rank 1 and a suffering-addicted psychopath. As a human, Enmu claimed to be a doctor, falsely "curing" the dying for his own profit and prestige until being made into a demon by Muzan. Insanely worshipful of Muzan, Enmu swiftly kills to climb the ranks of the demons and even survives Muzan's purge of the Lower Ranks by impressing his master with his love of pain and death. Empowered and sent after Tanjiro, Enmu uses his powers over dream and sleep to put Tanjiro and his friends into pleasant dreams while tricking humans into entering their dreams to destroy their minds. Enmu promises to give train passengers kind dreams, but delights in twisting their dreams into horrific nightmares, and when cornered by Tanjiro opts to fuse with the train itself and try to devour all 200 passengers, gloating how he means to torment his victims before he eats them to further empower himself.
• Evil Is Cool: Akaza, Upper Moon 3. A badass demon with a Darwinist philosophy who fights with his bare hands and kills Rengoku after a flashy and explosive battle.