Hisoka role in Hunter X Hunter What is Hisoka's character in Hunter x Hunter?

I cannot describe his character from Hunter X Hunter.
By our real-world definition of evil, yeah, he is. But Hunter X Hunter morality is pretty grey, so in-universe he's not really "evil" per say.I wouldn't say he's an anti-hero or even evil, though. He is selfish, a hedonist. He took the hunter exam for his own benefit and entertainment; he spared Gon, multiple times, so he that could grow into a stronger opponent(can be compared to a farmer feeding his cattle); he helped Kurapika so that he could fight Chrollo, and he fought alongside Illumi to protect Gon and/or fight strong opponents along the way. He has also killed a lot of people who weren't challenging enough for him throughout the series. He is a bloodthirsty hedonist who lives almost entirely in the moment and is always looking for stronger opponents to challenge himself. He is selfish, nothing more, nothing less.