User blog comment:Martialmaniac/Chrollo VS Hisoka/@comment-4932025-20160421183332/@comment-5780397-20160422200611

I think in a sense it is coherent with his character. He is strong and he knows it. The odds that somebody that could be a threat to him is among the audience is extremely low. However, you are surely right, there must be a few Blacklist Hunters eager to take his skull... unless they are wisely waiting for Hisoka to weaken Chrollo (after all, Hisoka is a hunter too, and stealing his prey would possibly trigger a conflict of interest betwenn fellow Hunters). So, maybe some see it as a member of the association trying to arrest a criminal?

This ties with the problem of Heavens Arena's audience. I mean, who the hell are those people? Most of them clearly do not have any idea what Nen is. Do they go there to see the matches because to them they're like a weird mixture of competitive violence and prestidigitation (since they cannot see Nen abilities)? Or do they watch them like we watch wrestling, "knowing" it is perfectly staged?