Xiao has golden eyes. He has dark medium-length hair with teal undertones. He is calm, quiet, vigilant, protective, soft-spoken, reserved, trustworthy, and reliable. He doesn't like showing vulnerability. He is not good at expressing his feelings properly. Xiao is extremely perceptive, smart and sharp-witted. He is short and lean. He has a cold, reserved and aloof exterior, but he has a kind heart. He is also a man of few words and he prefers to be alone. He dislikes being around people.