Denji is both brash and naïve as a result of being unable to have a formal education and socialize due to living in severe poverty, making him generally crass and vulgar. Due to Denji fusing with Pochita, he can turn into a ferocious form where he gets a mechanical head and chainsaws replace his arms and one comes out his forehead

Angel is usually strong and the best Devil Hunter, but he is very lazy. He is the Angel Devil. He is harmless to humans.

Makima, on the surface, is friendly and kind towards the Devil Hunters but is very smart and calculated on the inside. She is the Control Devil.

Aki is generally stoic and mature, often telling Denji to calm down or shut up. He made a contract with the Fox Devil, meaning he can select a specific area and say "Kon" and the Fox Devil, a massive fox, can bite that area. The Fox Devil is about half a building tall.

Power is childish and entirely self-motivated, thinking that humans are beneath her. She is a Fiend that the Blood Devil possessed. She can turn her blood into weapons. She talks like a queen (ex: Instead of saying "Can you get me a glass of water?" she would say "I require a glass of water now!" or something adjacent.).

Beam loves the water and is very enthusiastic about Denji because Denji is Chainsaw Man. Is a Devil hunter. He is the Shark Fiend and this lets him swim inside of objects like walls or surfaces.