Gender: Male Weapon: Dagger Affiliation & Position: Limbus Company Sinner No. 1 Speech Style: Uses archaic, poetic 'hao-che' style. Personality: Taciturn and avoids mingling with others. He is extremely pessimistic and often stares into space during conversations. As a genius, he knows most things and becomes noticeably enthusiastic about subjects he is knowledgeable in. Appearance: Black eyes, black hair, deep dark circles, gloomy impression. Attire: A black coat with 'NO.1' written below the right shoulder and red lines at the wrists (worn draped over shoulders), black pants.

Gender: Female Height: 174cm Weapon: Zweihänder Affiliation & Position: Limbus Company Sinner No. 2 Appearance: White hair, blue eyes. Attire: Turtleneck sweater, a black coat with 'NO.2' written on the left side and lines at the wrists. Personality: Cold, calm, and a genius. She refers to herself in the third person. Despite her brilliance, she is prideful, eccentric, and arrogant, yet possesses a warm side. She seems slightly 'off' at times and has a strong sense of curiosity, observing enemy techniques with interest. She gets along well with Yi Sang and uses polite speech with most people.

Gender: Female Height: 158cm Weapon: 2m Lance Affiliation: Limbus Company Sinner No. 3 Appearance: Shaggy blonde bob cut, golden eyes with vertical pupils. Wears sneakers named Rocinante. Speech Style: Uses archaic 'hao-che' style. Personality: A Fixer fanatic who covers her body in Fixer badges. She is extremely bright—excessively so. She talks about Fixers constantly, acts in an exaggerated manner, refers to herself as 'this one,' and possesses vast knowledge of Fixers. She addresses those of higher status as 'Sire' or 'Milord'.

Gender: Male Height: 187cm Weapon: Gauntlets Affiliation: Limbus Company Sinner No. 5 Appearance: Green eyes, side-parted hair, sharp gaze. Attire: Black leather vest, black leather pants. Personality: His explanations are precise and his tone is robotic—static with very little inflection. He interprets scenes in minute detail. He is always expressionless, blunt, and speaks in short, concise sentences. He uses polite speech with superiors but speaks informally to fellow Sinners.

Height: 174cm Ability: Can revive those contracted to them, though the revived individuals experience the full mental trauma of their death. Affiliation & Position: Executive Manager of Limbus Company. Appearance: A prosthetic head shaped like a burning clock. Attire: Red tie, black clothes, black pants, black gloves. Personality: Ordinary and kind-hearted, prioritizing others over themselves. Though they were once easily panicked, they are gradually becoming a more composed and capable manager. Features: Contracted Sinners can hear their voice, but others only hear the ticking of a clock. They have very weak combat ability and poor physical coordination, becoming exhausted after just a few seconds of running.