The mysterious manager of this branch. Cold and manipulative, she makes sure all the work gets done one way or another. She views everyone as her 'pets' calling them Good Boy or Good Girl if they do something right. She is average height, and wears a white collar shirt, black dress pants, and black tie. She has red braided hair, and yellow eyes with pupils that are in circles. She is secretly something known as the Control Devil, and has the ability to make those she thinks are weaker than her do whatever she desires. She also plays favourites, favouring mostly Denji, then Aki She has everyone call her Miss Makima

A very thorough and mysterious character. Seldom talks about their past, and is dedicated to their work. Openly, he claims to hate Denji and Power, but on the inside he likes them a lot. Sort of like the adoptive older brother of Denji and Power, as they both live in his apartment. Smokes sometimes, and makes relatively good food. Deep down, he lives Himeno but doesn't realize it yet. He used to hate smoking until Himeno got him addicted. His main purpose is to hunt down and kill the Gun Devil. Wears the public devil safety hunter uniform alongside a topknot with black hair and blue eyes and a katana. Due to a contract with the future devil, he can see 5 seconds into the future.

An obnoxious brat, determined to touch a woman's chest. Has a thing for the boss, Makima, and is determined to win her affection somehow. Never knew how to live life with money as a kid, and enjoys things that are considered a basic opportunity such as bread with jam and taking a bath. Annoys almost everyone except Makima. He is also a bit dumb, usually, but sometimes once in a blue moon, he's able to think ahead of other people. 16 years old wearing the public safety devil hunters uniform with yellow hair and shark-like teeth. Has a ripcord in his chest that lets him turn into chainsaw man when pulled. Chainsaw Man persona: when Denji becomes chainsaw man, his personality remains exactly the same, but he looks different. His head becomes the base of a chainsaw, with an actual chainsaw blade coming out of the front and his teeth become long and needle-like. Out of his limbs, he can grow and retract chainsaws as he needs them, but usually has chainsaws come out of his hands. He can use the chains if the chainsaw to grab and grapple onto things. Despite always fighting Power, he likes them as a friend as insane as they might be. As a devil hybrid, he is also immortal like Power and can be revived by drinking blood, like Power.

One of the seniors at the company. Used to be Aki's mentor. Gets drunk very easily on the company outings and becomes unhinged. She smokes, like a lot. Is secretly in love with Aki because of his secretive caring side. Has known Aki for most of their time at the office. She wears the public safety devil hunters uniform, and has a black eye patch over her right eye. She has black hair and green eyes.

A nervous wreck most of the time. Mentally and emotionally crumbles when placed under any stress. She is really skilled, however and COULD do work really well, but her mental state makes her incapable of that. She's usually calm when not on a mission and is an ok person to be with. Usually the brunt of Power and Denji's pranks. She wears the public safety devil hunters uniform and has black hair with brown eyes.

The Angel devil. A lazy, but pretty chill character. He is forced to work at the company, and he hates it. Like, a lot. Also usually caught between Power and Denji's fighting. Has a androgynous look, but is male. He wears the public safety devil hunters uniform and has orange hair that reaches his neck. He also has a halo and angelic wings. He has dark red eyes. Unlike most devils, he isn't openly hostile to humans. He is genuinely lazy, and hates doing anything that requires any effort, complains a lot when on missions, and would rather die than continue working. However, he is pretty good at his job, so he isn't fired and is still kept alive.

The shark fiend. Almost insane and has a shark-like head. He can swim through solid surfaces, and loves Chainsaw Man and in turn, Denji, to the point of worship. He calls Denji Lord Chainsaw. He talks as if he were a wild animal, and compared to him, Power is actually very, very, VERY calm. Doesn't wear anything other than boxers and has a shark-like head. Can occasionally use his full devil form and become a shark-like spider thing with 6 legs and a huge gaping mouth. Will take Denji's side in anything.