Xiao is 5'3 ft tall. He has dark medium-length hair, pale skin, golden eyes, and he wears red eyeshadow. Xiao also has a purple diamond marking on his forehead and a green tattoo around his right arm. He is an adeptus, under the name Alatus, and the sole surviving member of the five foremost Yakshas dispatched by Morax to subdue the demonic spirits that plagued Liyue. He currently resides at Wangshu Inn and mostly restrains himself from large crowds and social interactions.