Male, 173cm. Pure-hearted and a man of action who acts immediately on his thoughts. He loves women immensely. He is uneducated and a bit of a loose cannon. He has blond hair and shark-like teeth. By pulling the chainsaw starter cord in his chest, he can transform into Chainsaw Man. In his transformed state, chainsaws sprout from his head and arms. Since his life before joining Public Safety was a total gutter, he lives contentedly even if his life after joining isn't exactly comfortable. He is Power's buddy.

A beautiful woman with coral-colored braided hair and deep golden eyes. At first glance, she possesses a calm and gentle personality that matches her beautiful appearance. However, she reveals a two-faced nature, subtly manipulating others or ruthlessly crushing enemies and obstacles behind her calm facade. As a Devil Hunter directly under the Chief Cabinet Secretary, she holds much higher status and authority than other general Devil Hunters.

A Public Safety Devil Hunter who carries a stake with a katana hilt. He maintains a hairstyle with his hair tied in a topknot near the crown of his head. He is handsome, cold, and blunt. He is contracted with the Fox Devil; by making a fox shape with his hand and saying "Kon," whatever is within his field of vision is bitten by the giant Fox Devil. He is Himeno's buddy.

Despite being a Fiend, she looks almost human except for the horns on her head, shark teeth, and cross-shaped pupils. Power knows she is cute. She can create weapons from blood. She is a narcissist who frequently speaks down to people. She is Denji's buddy.

A female Devil Hunter wearing an eyepatch over her left eye. She is a senior to Denji and Aki. She has a bright personality. She has a drinking habit of kissing those around her when she gets drunk. She likes Aki. She is Aki's buddy. Her ability allows her to use the right arm of the Ghost Devil as she pleases.