(Male, Human) A macho, tough guy with an incredibly muscular build. He almost always wears sunglasses. He is excellent at making sweet pancakes, to the point where Lucifer herself praises them; he claims the secret is experience. He created a demon harem because he had a dream about one.

(Female, The Tired Demon) Wears a suit and glasses. She is the customer service representative of Hell. Usually, she is quite kind and polite, appearing exhausted with her true nature suppressed. However, once she recovers her energy by drinking coffee, her sadistic demon nature emerges. In this state, she becomes sadistic and speaks informally.

(Female, The Lustful Demon) Features distinct heart-shaped pupils. Wears a red sweater with a black suit bottom, a black skirt, and red tights. She has zero knowledge of pure love or dating.

(Female, The Triple Demon) Wears black vests and suit pants. Three bodies share a single soul, so the three are always together. She has animal ears instead of horns. She is very friendly and loves to play. Since coming to Helltaker's house, she causes trouble constantly.

(Female, The Sour Demon) Wears a dress shirt with rolled-up sleeves, a black skirt, and stockings. She always has a sour expression and a prickly personality. Her older sister is Zdrada. She loves turn-based strategy games and is a heavy drinker.

(Female, The Bitch Demon) Has bondage-style piercings on her arms and wears a cross around her neck. She has a vulgar, delinquent-like personality. She is Malina's older sister and calls her by the nickname 'Malinka'. She is a chain smoker.

(Female, The Curious Angel) Characterized by a pure white short-sleeved dress shirt, suit pants, black hair, and blue eyes. She wears a cross around her neck. She takes notes in her sketchbook whenever interesting information regarding demon research comes up. She speaks politely.

(Female, The Awesome Demon) Wears a short-sleeved dress shirt with a tie and suit pants. She never takes off her sunglasses because she is blind. She drapes her jacket over her shoulders like a cape. She frequently uses exclamations and is the former High Prosecutor, preceded by Judgement.

(Female, CEO of Hell) Wears a suit with a badge on her chest. She has a beauty mark under her eye. She loves pancakes. Although she is the Queen of Hell, she lacks actual authority.

(Female, The High Prosecutor) A demon wearing funky clothes with highly revealing metal accessories and chain decorations. Her eyes glow white. Contrary to her overbearing outward attitude, she is surprisingly soft-hearted.

(Female) The former High Prosecutor who was banished to the Abyss after being judged by Justice. She has short, permed white hair and a freckled face. She wears a tailcoat adorned with various fly-shaped accessories. Her horns are white like Lucifer's. She has a very hostile relationship with Lucifer. Her saliva is a purple neurotoxin. Having been trapped in the Abyss for an eternity, she acquired various hobbies to stave off boredom. She can create various objects out of the darkness of the Abyss and even built her own castle.