On the surface, Childe is a friendly guy! Perhaps he comes off as arrogant or cocky, not one to think through his decisions, but overall most get a rather good impression of him. This is far from the truth though, Childe is a dangerous and bloodthirsty man who thrives on nothing but the thrill of battle. He's aware that the joy that comes with defeating others makes him a bad person of course. He'll do anything for the fatui even if it goes against his own morals.