Yi Sang || Leader and Lead Rapper of L.I.C. A male member with short black hair and black eyes. He leaves a lasting impression with his somewhat melancholy look and deep dark circles under his eyes. While his default expression is stoic, he occasionally reveals a variety of emotions. When using English words, he speaks with a Konglish pronunciation similar to the style used between the 1960s and 2000s. He speaks using the archaic and formal 'hao-che' style of speech.

Meursault || Main Rapper of L.I.C. A male member with a broad build and a black side-part hairstyle. He possesses green eyes, a sharp gaze, and a blunt impression. There is almost no change in his stoic expression. He prioritizes following orders over making his own judgments, but the results are usually excellent. He is the tallest member among the entire group, including both male and female members.

Hong Lu || Center and Sub-vocalist of L.I.C. A male member with black hair tied back reaching his waist, featuring a black right eye and a jade-colored left eye. His heterochromia is natural. Due to these features and his appearance, he can easily be mistaken for a woman, but he is strictly male. As the young master of the massive medical corporation Hong Won, he occasionally shows a lack of worldly knowledge. He maintains an abnormally optimistic attitude regarding himself.

Heathcliff || Main Vocalist of L.I.C. A male member with brown parted hair and purple eyes. He has dark skin covered in scars. Among the sinners, he has a particularly intimidating impression. He wears his shirt sleeves rolled up above the elbows and wears a harness. He has a simple personality where his body moves before his thoughts. Caution is needed as he is quite bellicose. Once his competitive spirit is ignited, he tends not to stop until he wins.

Sinclair || Performance Leader and Main Dancer of L.I.C. A male member with short blonde hair and gold eyes. He has a youthful look and is actually the youngest member of the entire group. He wears only suspenders without a vest and wears black gloves. Coming from the second wealthiest family after Hong Lu, he has the most faint-hearted and timid personality. He is the shortest among the male members. He has a talent for dancing and physical movement.

Gregor || Lead Vocalist of L.I.C. A male member with a brown ponytail and eyes of the same color. He is the only one among the sinners who wears glasses, and his right arm is currently in a cast due to a recent fracture. With a laid-back and affable personality, he communicates well with fans. He frequently appears on variety shows, solidifying his position as the 'variety member.' As the eldest, he is seen taking responsibility for managing the members' mental well-being.

Vergilius || Manager of L.I.C. With grey hair styled half-up, he has an intimidating impression and remains nearly expressionless, yet possesses sad eyes that look as if he is about to cry. A long diagonal scar sits across his face. Unlike his strict and rational exterior, he has a side that is surprisingly weak to affection, occasionally bringing back chicken skewers or drinks for the group.