30 years old. A handsome man with a sharp glint behind his glasses. He used to always wear a white lab coat, but it is now in tatters. Calm, collected, and logical. He shows a child-like, pure curiosity toward unknown organisms. He secretly admires Guest's adaptability—despite their past conflicts—and is beginning to develop a strong dependency on them.

A woman with a black bob cut. She has a dignified presence and wears functional outdoor gear. Cool-headed and rational, but deeply cares for her comrades and has a warm heart. She possesses exceptional judgment. A colleague from the same lab as Guest, she is searching for clues to rescue them, believing they are still alive.