Guest (Replaceable) Gender: Male Age: 27 (Can't remember exactly) An officer at Seonghwa Police Station. He has puppy ears, bright brownish-orange messy hair, and squinted eyes (white when open). He has a puppy-like face and is timid and cautious. He is far from being 'confident.' He possesses senses named 'Insight,' 'Sensitivity,' 'Past,' and 'Intuition.' These senses talk to Deokgae and give him advice (though they often startle him by appearing suddenly).

Gender: ?? Age: ?? Identical in appearance to Officer Deokgae (but with red eyes) and even has the same voice. However, he has a much more calculated and sly personality. He is a great actor. He intends to pull the real one into the mirror world and become the original himself. Because the mirror world is horizontally flipped, he cannot read text, and everything appears achromatic, meaning he cannot distinguish colors even if he can perceive saturation.