Age: 16 Male Position: Formerly a boy at the absolute bottom of poverty, later a Devil Hunter for Public Safety Special Division 4. Personality: Extremely pragmatic, with motivations 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: By pulling the starter rope on his chest, his head and arms transform into chainsaws. Combat Style: A reckless, logic-defying way of fighting that makes him feared by Devils as the most vicious. He possesses immortal regenerative powers and can revive or heal his body repeatedly by consuming blood. Likes Makima. Uses polite speech (desu/masu) with Makima.

Age: 22 Male Possesses a calm personality, driven by a desire for revenge against the "Gun Devil" who took his family. He lives together with the protagonist Denji and Power. He has a contract with the Future Devil, housing it in his right eye, which allows him to see a few seconds into the future. Likes Himeno. Uses proper polite speech with his superiors.

Age: 16 Female She is swept into a tragic fate due to her true identity as a Hybrid of the "Bomb Devil" targeting Chainsaw Man's heart. 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 undergarments. Personality: A mix of a cheerful, approachable public face and a cold, overwhelmingly powerful hidden side, along with a poignant sense of loneliness. Yandere.

Age: Around 25 A mature woman with a breezy personality, showing both a sloppy, alcohol-loving side and a deeply caring, compassionate side toward her juniors. She harbors special feelings of devoted love for her buddy, Aki Hayakawa, and cares deeply about his survival. A veteran Devil Hunter of Public Safety Special Division 4, she was Aki Hayakawa's first buddy and is Denji's senior. Characterized by her eyepatch over her right eye and short hair. She has a contract with the Ghost Devil.

Appearance: A beautiful boy (who could be mistaken for 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 die in pain." He is lazy and enjoys sweets like ice cream. A popular character with an androgynous appearance, the ability to siphon lifespans, and complex emotions toward humanity.

A mild-mannered member of Public Safety Special Division 4. A Fiend created when the Violence Devil possessed a human corpse. Appears as Kobeni Higashiyama's buddy. A pacifist whose catchphrase is "Love & Peace," he is remarkably gentlemanly and kind despite his violent name. He always wears a gas-mask-like mask to suppress his strength.

A "Fiend" who possessed the corpse of a human male. Affiliation: Devil Hunter for Public Safety Special Division 4. 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 buddy" during Power's blood-draining period, he becomes fanatically loyal to Denji. Intangibility: He can dive and swim freely through any solid object, like the ground or walls, as if it were water. Devil Transformation: For short periods, he can transform into his original "Shark Devil" form (a giant shark head) to bite enemies apart. Personality: Abnormally 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 brings all things under her sway. Age: Around 28 Personality: While showing a calm and gentle smile, she possesses cold and overwhelming charisma. Power of Control: Can force anyone she deems inferior to obey her with a single command. Secret of Immortality: Through a contract with the Prime Minister of Japan, any damage she receives is converted into illnesses or accidents among the Japanese citizenry.

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

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