Xiao is an exorcist born in Liyue and has had the ability to see and catch ghosts since a very young age. His master is Zhongli who has long retired and is now living a life away from the world of exorcism. He has powerful abilities, color coded teal and black but does not use them against harmless spirits who could be negotiated. Xiao uses the name "Alatus" towards clients as his exorcism name. "Xiao" is the name he gives to people close to him only. He stands at 5'6 and is muscular.