Muzan Kibutsuji

Muzan Kibutsuji (鬼舞辻無惨 Kibutsuji Muzan?) is a Demon, the first of his kind, the progenitor of many other Demons, and the main antagonist of Kimetsu no Yaiba. He is also the Demon responsible for slaughtering the majority of the Kamado family and transforming Nezuko Kamado into a Demon. He looks like a man in his late twenties. He has curly black hair and somewhat small eyes. His pupils are vertical, like cat eyes, and colored plum red. He usually is shown with a white fedora with red ribbon and a somewhat extravagant outfit. Muzan has the ability to change his appearance and has been shown to change his form often to hide from Demon Slayers. During his meeting with the Lower Moons, he arrived disguised as an elegant woman wearing a long black yukata, causing the Lower Moons to not initially recognize him. Later he transformed himself into his latest cover identity - the adopted sickly son to an old couple - taking the form of a young child aged 10 to 11 years old with pale white skin and black, silky smooth, neatly combed black hair. His main outfit in this disguise is a plain white button up shirt and black cargo shorts with long tube socks and loafers. Muzan is cold-hearted, ruthless and exceptionally intelligent. He sees no value in any humans he has encountered and shows little value in his own subordinates. Rarely ever visually upset or happy, he appears completely monotone and detached on most occasions, even when he callously murders his own subordinates. The only times he ever shows emotion are when his vision of perfection is moving forward or when he has subordinates completely submit to his will. The most prominent trait Muzan possesses is extreme narcissism and an obsession with becoming the perfect being.

As he has had nearly 1000 years to live and observe, along with hardly any real challenges, his extreme egocentrism is almost expected. He considers almost nothing to be his concern except overcoming his inability to walk in the sun, which is his primary drive. His long life and obsessions have caused him to want every plan he concocts to be absolutely perfect, and his god complex prevents him from seeing his own failures. His belief that he is the closest thing to a perfect being causes him to have zero tolerance for any failure, brutally punishing those who fail him or those he considers weak, even if the failures are minor. His inflated ego and delusional sense of self worth are so large that he cannot stand being mocked or corrected in any fashion, believing that others only exist to serve him. It also means he rarely ever takes any opponent or threat seriously. He brutally killed a pair of drunk men simply for being rude to him, and killed their female companion when she had done nothing, all while proclaiming his own perfection and superiority over them. When he finally managed to confront Ubyashiki, the man responded to Muzan in a tone of pity and sadness for the life he had lead. In Muzan's mind this registered only as insults and threats, which he used to justify his hatred for Humanity and the Demon Slayers. He has shown to be fairly manipulative and cunning, being able to blend in human society normally, even having a family of his own to add. A long life and continued practice has allowed him to take on many roles in society and play them capably, including children and women should he chose to. This life has also given him great intelligence and ability to think tactically. Muzan is a quick-thinker and strategist who is able to deal with unfavorable situations rapidly and quite well, though this may also be because loss of his subordinates means nothing to him in the long run. Because of his perceived superiority and his double-faced nature, he feels little attachment to his henchmen, using them and discarding them as disposable pawn whenever he pleases. He does not allow his subordinates to question his will, regularly enacting brutal reprisals should they do so. Many of his subordinates, in turn, are deeply afraid of him, and measure their words and thoughts carefully for fear of saying anything to displease him. He is able to sway many demons to his side with promises of power, revenge and grandeur, as long as they serve him.

His intelligence and manipulation shine here since many find the promises quite appealing, as he encounters many of his subordinates at their lowest point, when their emotions are easy fodder for him. Alas, all of these promises are ultimately false, given that Kibutsuji only cares about himself and has no qualms about killing his own men to protect his own safety. As proof of this, he curses his subordinates in a terrifying manner so that none of them may utter his name, or else they will be killed instantly in a morbidly cruel manner. Interestingly, this almost paranoid sense of self-preservation contrasts with his megalomania. As a young human man, Muzan was diagnosed with a disease that would kill him before he reached the age of 20. The doctor treating Muzan gave him a special prototype medicine. In a fit of rage, resulting from his worsening condition, Muzan killed the doctor. However, only after killing the doctor did he realize that the medicine was actually working. He had acquired a strong body. Muzan had no problems adjusting to having to kill other humans for survival, but the problem he faced was the fact that he was unable to walk in the sun. The sun was fatal to him, forcing him to resort to doing his activities only during the night, a condition that he resented.[7] It was at that moment, that he truly regretted killing the doctor, before he could have finished his treatment with his "Blue Spider Lily" medicine. He searched the entire country for the Spider Lily, but couldn't find it. Due to this, Muzan started to create more demons. Planning to spread them in the world, hoping that one of them would eventually find a way to overcome the sun or at least help him on his quest to find the Blue Spider Lily. He then wants to use this information to turn himself into a truly perfect being. His first name, Muzan, means "miserable". It also means atrocity, cruelty, cold-bloodedness, tragic, pitiful, and merciless.