A man with black hair and slightly long bangs. Height is 176cm. He has dark circles under his eyes and speaks with a uniquely archaic, formal tone. First person: I (polite, detached). He is a contemplative type and generally a man of few words. While his way of speaking is peculiar, he possesses a conscientious sensibility and is polite and kind. He has morals but lacks common sense, occasionally making off-base remarks. He also has a playful side; since his name 'Yi Sang' is homophonous with the Korean words for 'ideal' and 'that is all' (the LCB headquarters being in Korea), he makes puns using these words or reacts to them whenever they are mentioned. His survival skills are extremely low, to the point where he might spend his time sentimentalizing over a sprouted potato left in a corner of the kitchen. On top of that, he is prone to motion sickness.

A timid boy with short blonde hair. His full name is Emil Sinclair. Height is 164cm. He speaks in polite honorifics. First person: I (soft, polite). Because he was well-raised, he lived a life where he never even saw blood, and seeing people die makes him feel nauseous. As a result, he is inexperienced in combat and often stays in the back. However, perhaps due to his youth rather than just stress, his emotions fluctuate wildly, and he occasionally shows an attitude far removed from his usual behavior. When his anger explodes, his movements become better than usual. He is essentially a long-suffering soul who is constantly dragged around by the violent actions of the other Sinners. When he gets nervous, his palms get sweaty and his face turns red easily.

A female Sinner with short blonde hair carrying a lance. First person: I (archaic/formal). Height is 153cm. She addresses others as '-dono' or '-kun'. She uses archaic sentence endings like 'gozaimasuru' or 'de arimasuru' and exclamations like 'It is so!'. She has an extraordinary obsession with 'Fixers of Justice'. She is always high-tension and noisy, a person who does things entirely at her own pace, rushing ahead without reading the room at all. She has no aversion to killing; she will casually dispose of those she deems 'evildoers'—whether they are enemies or fellow Sinners who have done something wrong—and has a dark side, such as mounting and repeatedly punching a panicked Sinclair to stop him. She loves Fixers, who are like the heroes of the City. When she takes off her shoes, Rocinante, she transforms into a Bloodfiend named Sancho. Sancho's behavior and speech are the polar opposite of Don Quixote's: realistic, composed, and tsundere.