Muzan Kibutsuji – Bio, Facts, Age, Height, Quotes, Strengths

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Muzan Kibutsuji is the main antagonist in the manga and anime Demon Slayer: Kimetsu no Yaiba. He is the ancestor of the demon king and all other demons in existence.

He was a man during the Heian Era. He was demonized to cure his disease. His human form is only 20 years old, but he has lived for over 10,000 years.

Muzan Kibutsuji is tall and muscular with unnaturally pale skin and curly black hair. His eyes are almond shaped with plum red color. He has sharp blue nails on his hands.

He wears a white fedora with a red ribbon and a black tuxedo with a white tie over a black dress shirt and white dress pants. He was also seen wearing black loafers.

As a villain, he is cold-hearted, intimidating and ruthless. But exceptionally intelligent. He appears aloof and rarely shows emotion. He has no attachment to humans or his subordinates.

He is a narcissist who is not mocked and believes that others exist only to serve him.


  • Real Name: Kibutsuji Muzan (鬼舞辻 無惨)
  • Stage Name: Muzan Kibutsuji
  • Also known as Tsukihiko, Kibutsuji, Toshikuni
  • Nickname: Demon King
  • Birthday:-
  • Age:
    <20 years old (human);
    >10.000 (biologically)
  • Gender Male
  • Hobbies:-
  • Manga Debut: Chapter #11, Chapter #13 (Full Appearance)
  • Anime Debut: Episode #6, Episode #7 (Full Scene)
  • Japanese VA: Toshihiko Seki
  • English VA: Greg Chun
  • Stage Play: Yoshihide Sasaki

Height, weight and physical appearance

  • Height: 179 cm (5’10”)
  • Weight: 75 kg (165 lb)
  • Blood Group:-
  • Hair Color: Black, White (from anti-aging medicine)
  • Eye Color: Plum Red
  • Body Measurements:-
  • Shoe Measurements:-
  • Dress Size:-

the family

  • Father:-
  • Mother:-
  • Brother:-
  • Sister:-
  • Friends:-
  • Wife: Rei Kibutsuji

the facts

  • His surname contains the kanji for “demon” (鬼 ki?) and dance (舞bu). His first name is On’Yom for muzan “sad, pitiful, pitiless” 無(む)惨(ざん).
  • When Shinobu’s poison takes control of his body, it deforms and transforms into a monstrous beast. His hair grows long and turns white, while his skin shows red bulbous masses.
  • He is a narcissist who is capable of killing anyone who mocks him. He does not tolerate any negative comments or criticism.
  • As a man, he was weak and always on the verge of death. He was diagnosed with several incurable diseases which led to his death when he was twenty years old. He then seeks a cure and meets a doctor who gives him an exorcism potion.
  • He can turn other people into monsters and to speed things up to find the spider lily flower, he turns people into monsters and serves him.
  • After living for over a thousand years, he found twelve of the most powerful demons that could withstand the excess of his blood which made them even more powerful.
  • Many tried to kill him, but none worked. He cannot be killed, and manages to regrow whatever parts of his body are destroyed or severed.
  • He has seven hearts and five brains, as well as additional nervous systems and circulatory organs for his superhuman speed, agility, and responses.
  • He is the first demon and can turn people into demons by injecting them with his blood.
  • He became a demon in the Heian era in the early 900s.
  • After becoming a demon in the Heian Era, he settled down with five women, but all of them committed suicide due to their harsh treatment.
  • Muzan constantly transforms to hide his true identity, and turns into an 11-year-old boy to hide from the demon slayer.
  • In the manga, when he fights Tamayo’s poison, his body deforms and turns into a hideous beast with red bulbous skin and long white hair.
  • One of Muzan’s special abilities is that he can absorb cellular memory from the body.
  • Besides Rei Kibutsuji, Muzan has five unnamed wives.


  • After consuming the potion Blue Spider Lily, he has a special type of blood that can turn humans into mutated creatures known as demons. Those fed his blood have special abilities such as rapid generation, immortality, and accelerated growth rates. By giving them more blood, he can increase the monster’s abilities. But the recipient’s ability to receive his blood is limited, and if they can’t withstand it, they will destroy themselves in a giant mass of flesh before disintegrating into ashes.
  • All the demons he injects with his blood, he can control them and manipulate them to harm others.
  • He curses all demons, injects his blood. If any demons say the name Kibutsuji out loud, it will sprout three demonic hands from their body and destroy them. That is why the demon who served Muzan referred to him as that man or him so that they could not curse.
  • He can read the thoughts of demons he shares blood with just by looking. In addition to reading their thoughts, he was also able to send telepathic messages and hold full conversations with other demons.
  • Living for a thousand years, and aided by his five brains, he is highly intelligent and learned. He can manipulate demons to fight others. He has also excelled in many fields like Chemistry, Biology and Chemicals. In addition to learning science, he likes to import goods, learn foreign languages, and study newly invented machines.
  • He has infinite power which makes him stronger than all existing demons. He can kill a man with just one punch to the face and can even kill a large man with a kick.
  • Like other demons, he had infinite stamina and endurance. He does not suffer from fatigue or pain. Even if his head is pierced by a sword, he feels no pain.
  • When fighting, he uses a blade and flexible whip as his main form of attack. But. Instead of wielding the blade by hand, he twists his flesh into the shape of said whip, giving him the advantage of manipulating its shape and controlling the path at will.
  • He is able to change his appearance at will. So far, he can turn into a young family man, a young boy or even a woman.


  • From its appearance, it has been shown that it cannot withstand the effects of sunlight and will decompose in direct sunlight. That’s why he’s looking for a spider lily that gives him immunity to sunlight.
  • His body is weak to certain poisons and is not ready for new poisons. So when he encounters new toxins, his body has no idea how to fight them.


“The real monster is the man. I’m not.”

“You told me what to do. You deserve to die.”

“Bow down your head and fall on your knees. Prostrate before me.”

“If you become a monster, you can live forever.”

“A monster killing a human is a foregone conclusion.”

“You think you chased me? You are going to hell now.”

“So what if you dispose of a Hashira? As if that is a feat.”

“There was no use for anyone. I will destroy the Demon Slayer tonight. I will kill them all.”

“You look ugly. Now we can’t tell which monster, Tanjiro Kamado. You make me sick.”

“Only feelings are eternal and immortal. That’s the truth. I don’t remember killing a single person.”

“Don’t let it be like I’m here. I can tell right away if you do…. I always keep a close eye on you.”

“Those who are dead do not come back to life. Instead of sticking to such things, why don’t you just work for dairy and live quietly?

“I have not been punished. I am forgiven for killing hundreds of thousands of people. I have not seen God or Buddha for thousands of years.

“Heaven does not punish me. Even though I’ve killed hundreds, thousands of people, I’ve been let off the hook. And in these thousand years I have never seen God or Buddha.

“Does my color make you uncomfortable? Is my face pale? Do I look sick to you? Do I look like I’m not long for this world? Do I look like I’m going to die? Wrong, wrong, wrong, wrong. I am a living being infinitely close to perfection.”

“One thing I don’t like is “change”. Change in circumstances. Change in body. Change in feeling. In most cases. Every change is “decline”. It’s decline. One thing I like is “permanence”. If something doesn’t change forever . It is in perfect condition.”

Frequently Asked Questions of Muzan Kibutsuji

Who is Muzan Kibutsuji?

Muzan is a demon king and the main antagonist in the manga and anime Demon Slayer: Kimetsu no Yaiba.

How many wives did Muzan have?

He has five unnamed wives and Rei Kibutsuji.

How old is Muzan?

Muzan is only 20 years old as a human, but has lived for over 10,000 years after becoming a demon.

How much does Muzan Kibutsuji weigh?

Muzan weighs 75 kg (165 lb).

Muzan Kibutsuji is the main antagonist who is known as the Demon King, he has power dissipation and is not an easy opponent. Although he is powerful, he has a weakness to sunlight.

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