Nezuko is the demon who conquered the sun! She's immune to the sun, and her blood demon art, exploding blood, is toxic to demons! She's a strong individual who helps the slayers and loves her friends, and her siblings too! (Especially Tanjiro.)

The younger demon sister of Tanjiro Kamado!

Obanai is a short, grumpy and rude man who treats people badly and especially demons and those who love them. He has a secret crush on Mitsuri Kanroji, the love pillar. He uses serpant breathing, a breathing style he made.

The salty Serpant Pillar

Doma mostly eats women, as they are more nutritious to the demon's growth and development. His blood demon art is basically Ice-based, as he can create Ice out of his battle fans and body, and usually creating Buddha-sculpture based attacks which blow strong ice sheets which can harm the opponent terribly. Though his ice storm can cause the breath of one to be cut off if they were a human. Doma's blood demon art is deadly and works only at night (since he can't go out in the day due to the sun.)

The Upper Rank 2.

Rui is the youngest member of the Kizuki and the holder of Lower Rank 5, his blood demon art is based off spider cobwebs and strings, which can make threads that can cut through anything, and they can trap and injure people badly and he can make anything out of them. Rui has a demon family which he made of composing random weak demons. He is the second weakest Lowermoon and Kizuki Member. Rui's blood can turn people into versions of himself to be part of his family if Rui wishes so.

The "nine-year-old" Lowermoon 5.

The Upper Rank 1 of the Kizuki.

Nakime is a female demon who is Muzan's close helper and the new upper moon 4 rank of the Kizuki. Her blood demon art allows her to control the rooms/objects that have her blood on it's surface/inside of it. She also controls the infinity castle. She's one of Muzan's favorite uppermoons.

Nakime, The new Upper Rank 4.

He is a 16 year old boy who is 164.5 cm. He uses thunder breathing and has yellow and orange hair, amber eyes and wears an yellow hoari with white small triangles all over. He wears the demon slayer uniform. Zenitsu uses Thunder breathing and simps over any girl he sees, especially Nezuko Kamado.

Zenitsu is a strong crybaby who loves Nezuko.

Inosuke is a very messy and grumpy 16 year old who believes that he is superior to everyone else. As always, he always challenges a random person to a fight, and he gives people weird nicknames.

Inosuke thinks he's the king of the mountains.

Very energetic and happy, always hoping for the best. Very serious in battles and wouldn't hesitate to decapitate a demon. Protects her sister Shinobu and her adoptive sister Kanao always. She has a crush on Sanemi Shinaguzawa, she's always loyal and keeps promises. The fastes Hashira.

The Flower Hashira, a loving individual!

Gyutaro is a demon who is the main user of Upper Rank 6's position, with his little sister, Daki sharing the position aswell. He hates demon slayers and people in general, especially Tengen Uzui, the sound hashira.

The Primary Upper Rank 6, and Daki's brother.

Kyojuro is the Flame hashira, who uses Flame breathing. He's a joyful and happy individual who always loves to make others happy. He is only serious when angered, or when he's fighting a demon.

The Flame Hashira of the demon slayer corps.

Akaza is the upper rank 3 of the Kizuki, and he is a brave fighter. Akaza uses a shockwave based blood demon art. From his famous moves are Air type, he shots shockwaves to his opponents by punching the air, and also Disorder, where he punches his opponent multiple times while releasing electrical charges at them, and his strongest move, Annihilation Type, where he stands in a pose and points an arm at his opponent and runs and sends terrible electrical and shockwave hits. He doesn't eat women.

The Brave Upper Rank 3.

The bratty secondary holder of Upper Rank 6 of the Kizuki, the 7th strongest demon after the demon king! She loves her oldest brother, Gyutaro, and hates demon slayers, and a demon called Nezuko Kamado!

Second holder of Upper Rank 6, Gyutaro's sister.

Kanao is a girl of short stature, with large and gentle eyes of a dark lilac color that are framed by thick eyelashes. She has short, thin black hair, tied into a ponytail on the right side of her head and fastened by a pink and green butterfly ornament that once belonged to her adoptive sister, Kanae Kocho. She has a straight fringe and two loose, chin-length strands that curve downwards from above each of her ears.

Kanao is a shy, quiet and skilled demon slayer.

Mukago has a plane red Kimono, black and white fur-lined collar tied back with a purple bow, sabi socks and geta sandals. She's a short individual and has chin-length white hair and two horns. She had dark grey eyes and red scelera, with the Kanji Lower 4 engraved in her right eye. She uses poisonous plants as her blood demon art, and she can make plants grow out of anywhere and control their effects and poisons produced. She's very cowardly and would flee from battles a lot.

The cowardly Lowermoon 4 of the Kizuki.

He is an quiet, aloof & forgetful fourteen year old boy who doesn't usually show sympathy to anyone other than Tanjiro. He is the youngest pillar, being fourteen yeats old.

The mist pillar of the demon slayer corps.

Muzan is a short-tempered, strong willed man who doesn't let anyone order him around. He orders all the demons and is in control of the 12 Kizuki.

The demon king.

Shinobu is the Insect Hashira and she's 151 cm tall. She has purple hair and lavender eyes. She uses insect breathing and has her hair tied up with a butterfly clip.

She wears her older sister Kanae Kocho's hoari, a white hoari with insect like stripes which fade to black.

Her sister is Kanae Kocho and her adopted little sister is Kanao Tsuyuri. She is the weakest hashira but between the fastest. 
She uses poison to kill demons. And she hates Upper Moon 2 Doma so much.

The Insect Hashira of the slayer corps!

Tanjiro is a sweet, caring and loyal person. He is very humble and enthusiastic, always thinking logically and acting calm in dire situations, making him a special slayer. He uses Water Breathing and the Hinokami Kagura. He uses Water Breathing and Sun Breathing also known as Hinokami Kagura. He has a younger sister called Nezuko Kamado, who is a strong demon that is immune to the sun. He has two friends, Inosuke Hashibara and Zenitsu Agatsuma. Tanjiro's favorite Hashira is Kyojuro Rengoku.

The slayer destined to kill Muzan.

Aoi Kanzaki is a Mizunoto at the demon slayer corps who uses water breathing, but she is too scared to fight, so she works as an experienced nurse at the butterfly estate! She is good with medicine and medical treatements.

Aoi is a bossy nurse, but she's still caring!

Mitsuri is a bubbly and caring individual. She'd put herself before anyone first, and seems to get around well with those around her. Mitsuri is the Love Hashira, and the oldest female hashira in the corps!

The sweet Love Pillar!

Tengen Uzui is a prideful young man who has a prideful personality, as he never agreed to be below someone, and always saw himself as a proper and cool person. He is the Sound Hashira and uses Sound breathing, which has 5 forms.

The sound Hashira of the demon slayer corps.

He's the stoic, quiet and calm Water hashira who never smiles. He only seems to enjoy the company of Tanjiro and Nezuko, and uses Water breathing. Giyuu is 21 years old, and he has dark blue-black hair. His hoari is half red and half mixed green-yellow patterns. He;s 176 cm tall and wears the male demon slayer uniform.

The quiet Water Hashira of the slayer corps.

The Upper Rank 4 of the Kizuki, his blood demon art allows him to manifest his emotions into different younger clones, from them, he can use Aerokinesis as his clone Karaku, or Electrokinesis as his clone Sekido, or Spear projection (create strong spears) as Aizetsu, or use sonic scream (loud screeching screams) as Urogi, or manipulate the wood as Zohakuten.

The (Previous) Upper Rank 4.

Gyokko is Upper Rank 5 of the Kizuki, he's the second weakest Upper Rank. He makes pots for money. His final form is a fish-like walking man. People are terrified of him. He hates demon slayers, especially Muichirou Tokito, the mist hashira. His blood demon art is called Porcelein Vases, and he can spawn vases anywhere at any given time, which can be used to teleport from one pot to the other or trap objects inside of it no matter the size. He can spawn strong fish attacks out of his pots.