An individual with a strong will might be able to sever their connection with Muzan, rendering them immune to his curse and making them mostly undetectable by him. However, Muzan's control over his progeny is not omnipotent. All demons pledge obedience to Muzan, who uses fear and manipulation to maintain loyalty. A notable exception is the Spider Family, a group of demons forced to work together by their leader Rui, with permission to do so granted by Muzan himself.ĭemons are all, for the most part, connected to their progenitor, Muzan Kibutsuji. Even more, some demons blend into human society as a way to hide from persecutors and also to have a much easier access to prey.ĭemons for the most part work in solitude not bothering to group up and are instead shown to be highly territorial and fight over both prey and potential hunting grounds.

As a result, demons tend to live in secrecy with the population at large being ignorant to their existence. They are an organization trained to destroy them through a multitude of well refined techniques and tools developed across centuries to exterminate them. The Demon Slayers are the central adversary to the demon race. The rarest blood type is known as Marechi eating a single human with this blood type provides a demon with roughly the same nutrition as eating one hundred ordinary humans. Different human blood types have different levels of nutrition for demons: the rarer the blood type, the greater the nutrition. Once demons consume enough humans, they can develop Blood Demon Arts, an array of supernatural powers and techniques which are unique to each demon. All demons do regain their memories moments before they die, which possibly means that demons also have their lives flash before their eyes before they turn into complete ash.ĭemons are also known to mutate and grow stronger over time as they consume more humans, allowing them to grow into more monstrous forms and improve their physical and regenerative abilities among other attributes. Certain members of the Twelve Kizuki also retain their human memories such as Rui (though he eventually lost his memories later on), Kaigaku, Kyogai, Doma, and Kokushibo. However, there are a few demons who have completely retained their human emotions and memories, such as Nezuko Kamado, Tamayo and Yushiro. While they do still retain their original personality, most times it becomes a darker version of what it used to be, often corrupted by their core beliefs and their past.

Practically all demons possess a murderous instinct to kill and devour humans, and have lost most of their memories from their human life. Demons are also known to hate wisteria, which are poisonous to them and whose smell is repudiated by them. However, even with a Nichirin Sword, the only method guaranteed to kill a demon is through decapitation. Only the Nichirin Swords, weapons made from special ore with sunlight absorption properties, can inflict life-threatening wounds. Demons have an abnormally powerful physical constitution and potent regenerative abilities, making them immune to normal weaponry and granting them the ability to heal from any wound with ease, even re-growing their head.

They are also nocturnal as they are weak to sunlight, though they also stay up during the day as they don't require sleep. A group of demons attacking a Demon Slayer.ĭemons are a carnivorous, vampire-like species whose primary diet is humans.

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