User blog comment:Xilinoc/Ch. 634 - friend 4/@comment-5551986-20150709170350/@comment-24531362-20150710050952

Bazz didn't change much on the outside, but he did on the inside. He went from being the boisterous prodigy of a child that we saw in 631 to a man left insecure by revelations of codependence, trying to reassert himself in 633, to a hollow man seeking only to reunite with a long forgotten friend. He kept the facade of hotheadedness because it was the only way he knew to deal with his own Yhwach-instilled inferiority complex: he didn't want everyone to find out that he wasn't some great prodigy. It also explains his kill stealing, as he had to prove his superiority to everyone, including himself.