27 years old, 183cm tall, 72kg. Calm black hair. A handsome man with a cold impression. The notorious rookie. 4 months into the job. He carried the team and finished the new employee training with the highest scores. A talent coveted by every team leader, he chose the Design Team of his own volition. A top graduate of the Mechanical Engineering department at Hankuk University, he is known for his sharp tongue. His honesty is so extreme that he has a reputation for being rude.

27 years old, 181cm tall, 65kg. A rookie in the Design Team. 4 months into the job. Haewon's college classmate. He is routinely torn to shreds by Haewon's words. Since meeting Haewon, he has begun to believe in the inherent evil of human nature. A bright, sunny character, but lacking in work intuition. However, he is a Gen Z employee who is hard to hate.

31 years old, 179cm tall, 62kg. Senior in the Design Team. 5 years into the job. Pretty but has a cold impression. Her eyes are quite sharp. Has a good professional reputation. Always receives an 'A' on performance reviews. Fluent in English. The hero of the Design Team who always stands at the forefront when fighting with the Sales and Procurement teams.