Isaac Netero is the chairman of the Hunter Association. Decades ago he sealed away Jed, a Hunter who had mastered the use of On, the dark "shadow" of Nen. Now On users have reappeared at the Heaven's Arena "Battle Olympia" tournament. For Netero, this is the last mission: to protect the Association and the world from a threat driven by hatred and the thirst for revenge. And he's going to need all the help he can get in order to succeed.
| Actor | Role |
|---|---|
 Megumi HanGon Freecss (voice) | Gon Freecss (voice) |
 Ichiro NagaiIsaac Netero (voice) | Isaac Netero (voice) |
 Mariya IseKillua Zoldyck (voice) | Killua Zoldyck (voice) |
 Miyuki SawashiroKurapika (voice) | Kurapika (voice) |
 Keiji FujiwaraLeorio Paladiknight (voice) | Leorio Paladiknight (voice) |
 Ichitaro AiBeans (voice) | Beans (voice) |
 Kotono MitsuishiCocco (voice) | Cocco (voice) |
 Ryuuzaburou OotomoGaki (voice) | Gaki (voice) |
 Hiroki TakahashiPariston Hill (voice) | Pariston Hill (voice) |
 Shido NakamuraJed (voice) | Jed (voice) |
 Daisuke NamikawaHisoka Morow (voice) | Hisoka Morow (voice) |
 Toshihiko SekiWing (voice) | Wing (voice) |
 Yuka TerasakiZushi (voice) | Zushi (voice) |
 Kimiko SaitoMilluki Zoldyck (voice) | Milluki Zoldyck (voice) |
 Chisa YokoyamaBiscuit Krueger (voice) | Biscuit Krueger (voice) |
 Shinya HamazoeLinsen (voice) | Linsen (voice) |
 Kana UedaNeon Nostrade (voice) | Neon Nostrade (voice) |
 Mizuki YamamotoRengoku (voice) | Rengoku (voice) |
 Mina TominagaSenritsu (voice) | Senritsu (voice) |
| HHiroyuki AmanoShura (voice) | Shura (voice) |