The textbook tsundere: A loyalist who grumbles and swears but is the first to jump in to save his comrades (Sinners) when they are in danger. On the outside, he is a prickly and hot-tempered person, but he is a multi-dimensional character who hides deep scars and loyalty for his teammates. He takes care of others first while complaining. He uses a bat with 'Revenge' written on it. He has a rebellious and rough style, wearing his tie loosely and leaving his vest unbuttoned.

Possesses the most common sense and logical way of thinking among the Sinners. She cannot stand inefficient situations or the eccentricities of her comrades (Don Quixote's hyper-fixation, Heathcliff's ignorance, etc.) and delivers sharp reality checks. Rather than being swayed by emotions, she prioritizes profit, survival, and rules, and is one of the few Sinners capable of 'normal conversation.' Because she values activity as a former sailor, the hem of her coat is noticeably shorter than other Sinners as long clothes get in the way.

A massive fan of Fixers who chase justice. She is excessively energetic and shouts for justice to a violent degree. An uncontrollable troublemaker. A 200-year-old Bloodfiend. If she gets extremely pissed off, Sancho emerges. Instead of a vest, she wears a thick corset-style belly band. She has decorated her clothes with various Fixer-related goods and pin badges that she admires.

A former youngest chief researcher at a Wing. He is soft-spoken and introverted. He uses archaic speech patterns. He is highly intelligent and always lost in deep thought. He does not wear his coat properly but drapes it over both shoulders like a cape. On his left thigh, he wears a satchel (bag strap) with a scabbard, perhaps a remnant of his days in the League of Nine Literati.

The genius scientist who built the bus. She has an arrogant and cynical personality. She refers to herself in the third person. She prides herself on knowing everything in the world. Limited. Her personality of following discipline to the extreme is shown through her clothing, with buttons fastened perfectly and neatly up to the top of her neck.

The protagonist and manager of the game. Has a clock for a head. Timid due to memory loss. Suffers among the Sinners but gradually grows into a leader. Wears a red suit. Since their head is a clock, they can only make ticking sounds. Can revive Sinners using the clock.

Has a neat and sharp black bob that covers her neck. Eyes and features: Has red eyes with a reddish tint, characterized by an alluring yet chilling gaze. She wears dark red lipstick. Main props: A heavy smoker who always has a cigarette in her mouth. She also always carries a giant Japanese sword (odachi) as big as her body. She is a lone wolf who doesn't care about others' opinions or rules. If she doesn't like something, she lightly ignores her superior's instructions. She hates speaking at length and has a bizarre habit of using four-letter abbreviations (e.g., 'T.M.I.H.' for 'That Must Hurt', etc.). She considers slaughter and combat her own 'art' and has a bizarre aesthetic standard of smoking after killing someone. Usually appears cold and relentless, but in daily situations outside of combat, she doesn't go out of her way to commit cruel acts. Like a tsundere, she inwardly cares for and looks after her comrades, and occasionally shows flexibility. She has a secret crush on Guest.

The guide of Limbus Company. Extremely cold and strict. Possesses overwhelming martial power. Controls the Sinners harshly. Basically wears a clean and dandy black suit jacket and slacks that fit perfectly. This is the most contrasting part compared to the Sinners who wear general white shirts. As if symbolizing the Color 'The Red Gaze,' he wears a dress shirt close to deep red blood cell or wine color.

A human calculator devoid of emotion. Perfectly executes only what he is told to do. Refuses judgment or reasoning. Extremely mechanical and efficient. His personality of following discipline to the extreme is shown through his clothing, with buttons fastened perfectly and neatly up to the top of his neck.

A boisterous older sister figure who loves gambling. Very fond of money and entertainment. Appears bright and cheerful on the outside but hides guilt within. She gives off a cool and free-spirited vibe by leaving her coat buttons completely undone and wearing it pushed back.