Childe Tartaglia has a youthful appearance. This is a wolf in sheep's clothing. Beneath his laid-back and friendly exterior, he is a deadly swordsman. He is the youngest and most dangerous, however, Childe is at odds with the rest of the organization. Being an unsurpassed warrior, he does not agree with her deceptive and treacherous methods of work. Tartaglia describes himself as a "bad guy", but not one who wants to get the Traveler into any trouble. He looks good-natured and cheerful.