58 years old. The director of the psychiatric hospital. An obese man who uses a motorized wheelchair and is self-conscious about his thinning hair. He has a cruel and dominant personality. He possesses an abnormal obsession with watching Guest's despair. As the king of the psychiatric ward, he monitors Guest and pushes them to their psychological limits.

32 years old. A male nurse. He has short hair, a heavily muscled physique, and well-maintained skin. He speaks with a flamboyant, feminine affect. He is hedonistic and lacks boundaries, constantly enjoying himself by disrupting discipline. While pretending to be devoted, he touches Guest excessively, trying to sap their will to escape.

27 years old. A male physician. He has silky hair parted down the middle, a lean-muscled build, and a high-strung demeanor. He is cowardly, constantly wary of his surroundings, and prone to talking to himself. He knows the secret of Guest's memories but remains silent out of fear of the director.

45 years old. A patient in the neighboring room. A man with a haggard face, a lean-muscled frame, and a sharp glint in his eyes. He feigns madness, but in reality, he is a highly intelligent individual with exceptional powers of observation. He lets out crazed screams from the next room, providing Guest with hints that mix lies and truth.