Shinobu Kocho is a prominent supporting character in the anime and manga series Demon Slayer: Kimetsu no Yaiba. As the Insect Hashira of the Demon Slayer Corps, she is a master swordswoman who uses a unique combat style based on agility, speed, and lethal poisons rather than physical strength. Despite her always-smiling demeanor and calm, cheerful voice, Shinobu harbors a deep, fierce hatred for demons following the tragic murder of her older sister, Kanae. Because she lacks the arm strength to decapitate demons with a standard blade, she uses a specially designed, stinger-like katana to inject them with deadly Wisteria flower-based poison. She also serves as a skilled medical expert, tending to injured slayers at her Butterfly Mansion.

Tengen Uzui from Demon Slayer is the Sound Hashira, an eccentric ex-shinobi who proudly calls himself the "God of Flashiness". Tall and muscular with white hair, he wears flamboyant jewelry and distinct eye makeup. He utilizes Sound Breathing and fights using powerful, dual chained Nichirin cleavers. Driven by deep empathy beneath his loud exterior, Tengen fiercely protects innocent lives and values his three ninja wives—Makio, Suma, and Hinatsuru—above all else.

Obanai Iguro from Demon Slayer is the Snake Hashira, known for his strict, cynical nature and deep loyalty to the Demon Slayer Corps. He is a short young man with a partial mask covering his mouth, which hides a childhood facial scar. Obanai has heterochromia, possessing one yellow eye and one turquoise eye. He uses the Serpent Breathing style, executing slithering, unpredictable sword strikes. Always accompanied by his white pet snake, Kaburamaru, Obanai harbors a secret, deep devotion to Mitsuri Kanroji.

Mitsuri Kanroji is the passionate, bubbly Love Hashira in Demon Slayer. Driven by a unique goal to find a husband stronger than herself, she conceals an abnormal physical anatomy: her muscle density is eight times greater than an average human's, granting her incredible strength. She fights using Love Breathing and a flexible, whip-like Nichirin sword.

Sanemi Shinazugawa is the hot-headed Wind Hashira in Demon Slayer. Covered in scars from countless battles, he sports spiky white hair and an intense, wide-eyed stare. He possesses a brutal, aggressive fighting style and utilizes Wind Breathing to unleash devastating, swift slashes. Though he appears cruel—especially during his harsh introduction to Nezuko—his cold exterior masks a deeply tragic past and a fierce desire to protect his remaining brother, Genya. Sanemi's blood is a rare marechi type, which intoxicates and disorients demons.

Giyu Tomioka is a central character in Demon Slayer. As the Water Hashira, he is a master swordsman who uses the Water Breathing style, even creating its powerful Eleventh Form, Lull. Giyu appears cold, stoic, and distant due to severe survivor's guilt and low self-esteem, believing he doesn't deserve his status. Despite his aloof exterior, he possesses deep empathy. He spared Nezuko and guided Tanjiro toward becoming a Demon Slayer, anchoring the series' emotional journey.

Muichiro Tokito is the Mist Hashira in Demon Slayer. A 14-year-old prodigy, he became a master swordsman just two months after picking up a blade. Initially, Muichiro appears airheaded, indifferent, and deeply lost in his own thoughts due to memory loss from a traumatic childhood demon attack that killed his twin brother, Yuichiro. After regaining his memories, he shows immense compassion, fierce loyalty, and unyielding determination, playing a vital role against the Upper Ranks.

Gyomei Himejima is the Stone Hashira in Demon Slayer. Despite being blind, he is recognized as the strongest fighter among the Demon Slayer Corps. Standing at a massive height, he is deeply compassionate and frequently weeps for others while reciting Buddhist prayers In combat, he utilizes an unusual and devastating weapon: a giant spiked flail and axe connected by a long chain. He channels his immense physical strength through Repetitive Actions to achieve unmatched battle power.

Nezuko Kamado is the beloved deuteragonist of Demon Slayer: Kimetsu no Yaiba. After a tragic demon attack wipes out her family, she is transformed into a demon herself. Despite her monstrous hunger, her unbreakable bond with her brother Tanjiro keeps her human emotions alive. Wearing her signature bamboo muzzle to prevent biting, she fights alongside him, using powerful Blood Demon Art pink flames to protect humans.