The majority of traits that Xu Huo has acquired so far share a common characteristic: they have a broad coverage range but lack much offensive power, and some are not very compelling. This aligns well with the occupational characteristics of a "Passerby A"—weak, inconspicuous, and most of them aren't practically useful.
Of course, this is also related to the fact that he has not evolved his traits many times. With each upgrade, the traits either expand their range or enhance their restrictive force. For instance, the "Referee" trait of Kuang Sen, whom he met on the train to Zone 019, has evolved remarkably, not only offering a defensive self-preservation effect but also imposing restrictions on others.
