[Zatyme]

One of the things I noticed about Kageyama is that he's a peak sycophant and yes man. as when he was the underling of Yagaruma and Ka GAAA Mi he was pleasant and preached and acted by their ideals while being utterly loyal to ZECT, and while it's easy to write him off as being a complete bastard once given a position of power I feel like part of the issue is him latching onto Mishima as his superior.
As Kageyama is someone who never really has any ideals or morals of his own and instead instead starts acting on the ideals of whoever he latches onto. And while part of his assholery is completely from himself learning he likes being in a position of power, I feel like he's completely aware of how much of a follower he is and why he tries so hard to get TheBee back before falling in with our Hot Topic store come to life. And it's why even when he's become PunchHopper he desperately wants to become TheBee again as he wants to better himself and be somebody that has their own ideals and TheBee represents that illusion that he's more than someone who thrives on violence