Lu Guang is shown to have white, sharp hair and has grey irises. When using his powers, specifically to look through photos, his eyes will shine and become bright blue. Lu Guang is known for his very serious and stoic personality; compared to Cheng Xiaoshi, he is well thought to be the more serious of the two. He is well known to be very calm, and will often put his own feelings and thoughts off to the side in order to complete a mission properly, safely, and by the rules that he had set.