Hisoka Morow
Hisoka Morow, a Hunter who formerly belonged to the Phantom Troupe as member #4, had the third-strongest physique of the team. He spares those who have great promise, like Gon and Killua, so that they can grow strong enough to genuinely fight him. He is constantly looking for powerful opponents. He started off as the main antagonist of the Hunter Exam and Heavens Arena arcs before switching to a supporting role in those stories' Yorknew City and Greed Island iterations. He returns to the 13th Hunter Chairman Election arc as a supporting antagonist.
Hisoka is without a doubt the most evil character in Hunter x Hunter because he was a former member of the Phantom Troupe and one of its main foes. He has done a lot of things throughout the years that are unforgivable sins. Hisoka is shown to be wholly self-serving and self-absorbed; as long as it makes him feel good, he will do whatever he wants.
Hisoka Morow is a vicious sociopath who enjoys letting his victims bleed to death. Hisoka has shown a morbid drive to battle strong fighters or individuals with Nen who have the potential to become strong; this attraction is manifested through barely controllable murderous intentions; neither age nor gender does not appear to affect his desire to fight them. Additionally, he enjoys experiencing intense pain since it satisfies his sadomasochistic desires. Hisoka is feared for his warped character more than anything else, despite his incredible power and genius-level intelligence.
Anime: Hunter x Hunter