We see the primary antagonist, Genthru (The Bomber), using these mechanics with cold efficiency, forcing weaker players to take the risks while he reaps the rewards. This reinforces the idea that in Greed Island, intelligence and a lack of empathy are just as dangerous as raw power. The Shadow of the Phantom Troupe
The episode opens with one of the most satisfying "payoff" moments in the series: Killua’s retake of the Hunter Exam. In a stark contrast to the first arc’s grueling multi-phase ordeal, Killua annihilates over 1,200 applicants in under two hours, simply knocking them all out to end the exam instantly.
Hunter X Hunter (2011) Episode 66, titled serves as a vital bridge in the Greed Island arc. While it lacks the high-octane battles of previous arcs, it is a masterclass in establishing the mechanical complexity of the world and highlighting the immense growth of its protagonists. The Evolution of Killua Zoldyck