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Bow to my perfect form of beauty.
~ Gyokko after showing his full form.

Gyokko (玉壺 ぎょっこ) is a major antagonist in Demon Slayer: Kimetsu No Yaiba. He was a member of the Twelve Demon Moons, holding the position of Upper Moon Five. He is the secondary antagonist of Swordsmith Village Arc.


Out of every demons, Gyokko has the most grotesque physical appearance. Gyokko's design takes the form of a pale white, abstracted and grotesque humanoid figure with scales all over his body. He has an upper torso that has no arms and resembles that of an armless statue growing from a porcelain pot; similarly to a djinn. He has multiple infant-like hands that line his back.

Gyokko's face is somewhat even more disturbing. The position where the eyes supposed to be are displaced by large green mouth and bare teeth, and his actual eyes are located vertically from one another on his face; One eye appearing in the constantly open bottom mouth and the other is seated at the center of his forehead.

As the Upper Moon Five, the Kanji for number five is printed on both pairs of his dark honey brown eyes.


Gyokko is a self-proclaimed "artist" with a sadistic streak, being arrogant, egomaniacal and short-fused, especially when people didn't appreciate his so-called "art".

He's also shown himself to be incredibly shallow, petty and jealous, as seen when he attacked and mutilated Hotaru Haganezuka due to his jealousy of the latter's focus and dedication to his work, surpassing his own zeal when working on his own art.

He is also shown to be incredibly morbid as seen when Douma told him he placed a human head on top of his pots like a plant. Delighted, Gyokko immediately saw Douma's cruel tendency as more inspiration for his "art". The extent of this morbid and violent inspiration for his "art" is shown even more when he brutally murdered several swordsmiths and used their corpses to create a "beautiful" piece by stitching their bodies together along with sticking several swords into them, while they were still alive and screaming.



In the past, Gyokko was an ordinary boy from a village full of fishermen. When he was still younger, he took joy and sheer obsession in torturing animals to their death, before sewing fish scales and animal bones on his pot, claiming that it was his artistic style. Thus, he was feared and avoided by people from his entire village.

At some point of his life, he met Muzan Kibutsuji and became his minion, turned into a demon that later became Upper Moon Five.

Red Light District Arc

After the death of Gyuutarou and Daki, the Upper Moon Six duo, Gyokko was summoned to the Dimensional Infinite Fortress alongside other Upper Moons in a meeting. He claimed to Muzan that he already gathered the information about the Blue Spider Lily. Unconvinced, Muzan beheaded Gyokko, but the potted demon was still alive even when beheaded. Muzan then ordered Gyokko to leave for Swordsmen's Villiage alongside Hantengu.

Swordsmen's Villiage Arc



  • His name literally means "jade pot" in Japanese and Chinese.
  • Gyokko's summoned fish-like demons are reminiscent of Junji Ito's fish monsters from "Gyo."
  • Unlike other deceased members of Upper Moons, Gyokko had no onscreen flashback describing his past in the manga. His past was only revealed in the manuel.
  • Gyokko is the first deceased original Upper Moon who was slain by a single Demon Slayer and the only one who was killed by a single Pillar, while all others were attacked and slayed by several Demon Slayers in one fight. He was soon followed by Kaigaku, a new generation of Upper Moon who was killed by one Demon Slayer that is not even a Pillar.
  • Among the Upper Moon Demons perished prior to the final battle, Gyokko is the only one that has no successor of his own.


           Kimetsu no Yaiba logo.svg Villains


Demon King
Muzan Kibutsuji

Twelve Demon Moons
Original Upper Moons †
One: Kokushibou † | Two: Douma † | Three: Akaza † | Four: Hantengu † | Five: Gyokko † | Six: Daki † & Gyuutarou

Replacement Upper Moons †
Four: Nakime † | Six: Kaigaku

Lower Moons †
One: Enmu † | Four: Mukago † | Five: Rui † | Six: Kyogai (replaced) † Second: Hairou † |

Muzan's Lesser Followers †
Susamaru and Yahaba † | Hand Demon † | Swamp Demon † | Spider Family † (Father Spider † | Mother Spider † | Brother Spider † | Sister Spider †) | Snake Demon

Tengan Uzui's Father | Iguro Family | Douma's Parents