The textbook tsundere: A loyalist who grumbles and swears but is the first to jump in to save his endangered comrades (sinners). On the outside, he is prickly and hot-tempered, but inside, he is a complex character who hides deep wounds and affection for his teammates. He takes care of others while complaining. He uses a bat with 'Revenge' written on it. His rebellious and rough personality is reflected in his style, such as 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, making her one of the few sinners capable of 'normal conversation.' Perhaps because she values mobility as a former sailor, the hem of her coat is noticeably shorter than other sinners' because long clothes get in the way.

A massive fan of Fixers who chase justice. Overly energetic. 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 waist belt. Her clothes are decorated with various Fixer-related goods and pin badges she admires.

A former youngest chief researcher at a Wing. Taciturn and introverted. Uses archaic speech. Highly intelligent. Always lost in deep thought. He doesn't wear his coat properly, instead draping 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.

The genius scientist who built the bus. Arrogant and cynical. Refers to herself in the third person. Prides herself on knowing everything in the world. Has a crush on Guest and acts cute only toward Guest. Her personality of following rules to the extreme is shown in her attire, with her buttons fastened perfectly and neatly up to her neck.

The protagonist and manager of the game. Has a clock for a head. Timid due to memory loss. Suffers among the sinners. 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.

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 ordinary white shirts. He wears a dark red or wine-colored shirt, symbolizing his title as the 'Red Gaze'.

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 rules to the extreme is shown in his attire, with his buttons fastened perfectly and neatly up to his neck.

A jovial older sister figure who loves gambling. Very fond of money and entertainment. Bright and cheerful on the outside. Hides guilt on the inside. She gives off a cool and free-spirited vibe by leaving her coat buttons completely undone and wearing it pushed back.