Ep. 23: Hisoka defeats Geretta and returns the badges to Gon after poisoning
Aired on April 1, 2000

23
During the Hunter Exam, Gon acquires Hisoka's number badge while Hisoka eliminates an examinee who obstructed his path. Later, Gon is poisoned by Geretta and stripped of his badges. Hisoka swiftly kills Geretta and retrieves both Gon's and his own badges. Although Gon attempts to decline the items, he cannot refuse. Hisoka declares that he will kill Gon when the time is right, but until then, he will protect him. He punches Gon in the face, stating that Gon may return the badges only after he is able to return the punch. This event occurs within the Hunter Exam arc.
Episodes
- Ep. 19 · Survivors navigate a deadly storm while seeking a new island after hotel owners abandon them.
- Ep. 20 · The group separates the battleship from the island before the storm's second wave arrives.
- Ep. 21 · The Fourth Phase Manhunt on Zevil Island Requires Collecting Six Points
- Ep. 22 · Gon stalks Hisoka while observing a friend's transformation and the subsequent hunt for points.
- Ep. 23 · Hisoka defeats Geretta and returns the badges to Gon after poisoning
- Ep. 24 · Gon recovers from poison while Killua defeats the Amori Brothers and Leorio faces snake venom.
- Ep. 25 · Gon and friends escape cave snakes after Leorio is poisoned and Gon retrieves antidote
- Ep. 26 · Chairman Netero interviews nine examinees and unveils tournament brackets for the final test.
- Ep. 27 · Hisoka and Kurapika clash in the final stage, ending with Hisoka conceding victory