Hisoka is a magician, as well as a serial killer. Hisoka is deceitful, playful, and narcissistic by nature; he acts only according to self-interest. Hisoka combines his magic tricks with violence, and delights in battling against those he considers strong to the point of sexual arousal. In the manga, his sentences within speech balloons typically end with a suit symbol. Hisoka takes an interest in Gon and his friends after encountering them during the Hunter Exam; although he initially is posited as an antagonist due to affinity towards murder, he spends much of the series acting as both an adversary and comrade to Gon.