I guess he wants to try to arrest the guy instead of gunning him down with no warning, and hasn't considered the possibility that all the park kings are fractured humans, and this is their turf. He must be assuming that he can just arrest this one fractured human and clear things up quickly, which is greedy.
Would be way smarter to at least clear out his civilian GF (if not other civilians too, although that risks giving the baddies a clue that he's onto them) and then properly ambush.
but he's underestimating them
oh well
Also: Pencil Lead Man's left arm looks completely human. I guess he's just wearing a super convincing layer of "skin" over his prosthetic? Woulda been nice for him to keep a visible cyborg arm forever. Maybe it was too much of a pain for the artist, haha.