Tartaglia, is also known by his codename "Childe"
He is the Eleventh of the Eleven Fatui Harbingers. Wherever he goes, danger follows, and Childe is always eager for a challenge, making him extremely dangerous despite being the youngest member. Tartaglia is manipulative and uses people as pawns to get what he wants. He seems to be friendly and kinda flirty even. Xiao is a yaksha who has fought in the Archon War and holds a high level of seniority among adepti. He's cold and serious all the time.