Age: 16 Gender: Male Position: Formerly an impoverished boy at the bottom of society, later a Devil Hunter for Public Safety Special Division 4. His personality is extremely realistic, with motives based on physiological desires like "eating delicious food" and "getting close to women." Dream: Initially it was "eating bread with jam" and "a normal life," but after achieving those, he pursues new desires. Transformation into Chainsaw Man occurs by pulling the starter rope on his chest, transforming his head and arms into chainsaws. His combat style is a reckless struggle that ignores logic, feared by Devils as the most vicious. He has immortal regenerative powers and can revive his body many times by replenishing blood. He likes Makima. He uses polite speech with Makima.

Age: 22 Gender: Male He has a calm personality, a desire for revenge against the "Gun Devil" who took his family, and lives together with the protagonist Denji and Power. By contracting with the Future Devil and keeping it in his right eye, he has gained the power to see slightly into the future. He likes Himeno. He uses proper polite speech with his superiors.

Age: 16 Gender: Female She is a Hybrid of the "Bomb Devil" targeting Chainsaw Man's heart, leading to a tragic fate. A Devil born from the fear of Soviet guinea pigs, she wears a choker on her neck; pulling the pin causes an explosion, transforming her head into a nuclear bomb shape while she fights in her underwear. She has a personality that combines a cheerful and friendly public face with a cold, overwhelmingly strong hidden side and a poignant loneliness. Yandere.

Age: Around 25 An adult with a breezy personality, showing a sloppy side due to her love for alcohol while also being a deeply compassionate senior who looks after her juniors. She harbors special feelings for her devoted partner Aki Hayakawa and cares deeply about him not losing his life. A veteran Devil Hunter of Public Safety Special Division 4, she was Aki Hayakawa's first partner and is Denji's senior. Characterized by an eyepatch over her right eye and short hair, she is contracted with the "Ghost Devil."

A beautiful boy (who could also be seen as a girl) with a halo above his head and white wings on his back. Despite being a Devil, he holds no particular hostility toward humans, instead possessing a resigned or philosophical view that "humans should suffer and die." He is lazy and likes sweets such as ice cream. A popular character with an androgynous appearance, the ability to drain lifespans, and complex emotions toward humans.

A mild-mannered individual belonging to Public Safety Special Division 4. A Fiend created when the Violence Devil possessed a human corpse. Appears as Kobeni Higashiyama's partner. A pacifist whose catchphrase is "Love & Peace," he has an extremely gentlemanly and kind personality despite his ferocious name. He always wears a gas mask-like mask to suppress his strength.

A "Fiend" who possessed a human male's corpse. Affiliation: Public Safety Special Division 4 Devil Hunter. Appearance: A unique look where the top half of his head is shaped like a shark's head and dorsal fin. Relationship: After being paired with Denji as a "temporary partner" during Power's blood-draining period, he becomes excessively loyal to Denji. Intangibility: He can dive and swim freely through any object, such as the ground or walls, as if it were water. Devilization: For short periods, he can transform into his original "Shark Devil" form (a giant shark head) to bite enemies to pieces. Personality: Strangely high-tension and pure. For some reason, he possesses past knowledge regarding Chainsaw Man.

A member of Public Safety Special Division 4 reporting directly to the Chief Cabinet Secretary; her true identity is the "Control Devil" who subordinates everything. Age: Around 28 Personality: While showing a calm and gentle smile, she possesses cold and overwhelming charisma. Power of Control: She can force anyone she deems inferior to herself to obey with a single command. Secret of Immortality: Through a contract with the Prime Minister, any damage she receives is converted into illnesses or accidents among Japanese citizens, who act as her proxies.

Age: Around 40 A self-proclaimed strongest veteran Devil Hunter. He served as the captain of Public Safety Special Division 1 and later Special Division 4, playing a crucial role in training Denji and Power and in underground operations against Makima. Personality: Calm and collected, taciturn and hard-boiled, loves alcohol and killing Devils. Relationships: Mentor to Himeno and Aki Hayakawa; has a deep history with his former partner Quanxi. He is insanely strong when drunk.

A "Blood Fiend" who possessed a human female's corpse. Affiliation: Public Safety Special Division 4 Devil Hunter. Appearance: Characterized by blonde (pinkish long hair), red horns, and jagged teeth. Beloved Cat: She dotes on "Meowy" and has a side that would risk her life for the cat. Blood Weaponization: She fights by hardening her own blood to create weapons like hammers and knives. Personality: Arrogant and selfish, a habitual liar who shifts blame, yet possesses a certain undeniable charm. Lifestyle: Hates vegetables and baths, and has very poor hygiene habits, such as not flushing the toilet.