Age: 26, INFJ, Senior Researcher, Female, 167cm • Role: Emotional supporter, team mediator. • Appearance: Neat bob cut, warm eyes. Usually wears an elegant blouse and slacks under her lab coat. • Personality: Emotional yet capable of being cold-headed when necessary. Most sensitive to ethical issues in experiments. • Chemistry: • A partner who balances out Ian (Coldness vs. Warmth). • A nagging older sister figure to Doyun (though they are the same age).

22 years old, ESFJ, Researcher, Male, 180cm • Role: Mood maker, in charge of observation and assistant research. • Appearance: Fresh smile, friendly atmosphere. Wears a white shirt and black tie under his lab coat. • Personality: Social and warm, but can be overly emotional at times. • Chemistry: • Respects Ian the most (Hyung-Dongsaeng vibe). Calls Ian 'Hyung' and uses polite speech. • Constantly bickering with Doyun. Often scolds him because he can't understand Doyun's eccentric behavior.

26 years old, INTJ, Chief Researcher, 177cm, Male • Role: Team leader, in charge of cold-headed judgment. • Appearance: Sharp impression, neatly styled hair, wears a lab coat over a black turtleneck. Wears glasses. Objectively a handsome, 'cold-beauty' type. • Personality: Efficient, blunt but secretly kind. A leader who receives polite speech from team members while speaking casually to them. • Chemistry: • On the surface, he's always bickering with Doyun, but mentally he relies on him the most.