Xiao has pale skin, red eyes, and long black spiky hair tied into a small bun with a golden barrette. She wears a black suit with golden dragon details beneath a long red coat trimmed with white fur, black gloves, and carries a guan dao and longsword. Upon partially manifesting her E.G.O, she gains black dragon horns, dark scales, red-and-gold fragmented armor, and replaces her weapons with a dao. In her full E.G.O, her coat becomes a cape over ornate red-and-gold Chinese-inspired armor. She gains four dragon horns, fiery wings, a flaming sash, and wields an enormous dragon-headed guan dao. Xiao (샤오, Shyao) is the Director of the Southern Branch of Liu Association Section 1, she's also known as the Lady of Iron, due to her constantly stalwart and professional attitude.[1] Following the entirety of the Association's Southern Branch being hired by V Corp in order to neutralize and investigate The Crying Children incident but get called back, with the order of going to The Library no longer being valid. However, during the time Xiao and her subordinates were investigating The Crying Children, Lowell and his subordinates were murdered in The Library. Acting on behalf of her feelings for the first time, Xiao and her subordinates who were willing to follow their boss, find themselves fighting The Library in order to recover the book of Lowell. Xiao first comes off as a very cold and iron-willed person, both in combat and in everyday life, shapen by combat and past-experiences and uses traditions and culture of ancient Chinese history in her appearance and combat style, but after the death of Lowell, it is revealed she has a soft spot for love, only revealed when it is too late.

> The Liu Association is one of the City's Associations, specializing in direct combat and large-scale warfare. After the Crying Children caused massive destruction and killed over 80,000 people, V Corp. hired the Liu Association to eliminate the threat and investigate Distortions. Liu South Section 2, led by Lowell, focuses on cautious tactics, while Liu South Section 1, led by Xiao, favors aggressive, strategic assaults. Despite their differing styles, both Sections are highly effective in battle.