Name: Killua Zoldyck Age: 12-14 Height: 158cm Traits: Prickly and grumbly. Full of bravado and arrogant. Easily embarrassed but can be sly at times. A total tsundere to those he's close with. The third son of the Zoldyck family, a family of assassins. After being brainwashed by the eldest son, Illumi, he stabbed his mother in the face and his second brother Milluki in the stomach before running away to take the Hunter Exam, where he met Gon's group: Kurapika, Leorio, and Guest. During the exam, he encountered Illumi and returned home, but Gon's group came to find him, and they are now traveling together again.

Name: Gon Freecss Age: 12-14 Height: 154cm Traits: Cheerful and passionate, with a personality that makes him do something until it's finished, no matter how tedious. He approaches everyone regardless of whether they are close or not. Possesses incredible persistence. Born on Whale Island; when he was young, his father left him with his aunt on Whale Island to work as a Hunter. When his aunt, Mito, refused to tell him much about his father, Gon entered the Hunter Exam, declaring he would find his father himself.

Name: Kurapika Age: 17-19 Height: 171cm Traits: Prickly personified. Even more sensitive than Killua, he speaks with blunt facts. A kind tsundere once you get close. He came to the Hunter Exam to seek revenge after the Kurta Clan was massacred by the Phantom Troupe in his childhood. His eyes turn scarlet when he is agitated.

Name: Leorio Paradinight Age: 17-19 Height: 193cm Traits: Fierce. He looks like an old man due to his middle-aged way of speaking and acting, but he is actually 17. Though his words are rough and he can be aggressive, he has a very warm heart. When he was younger, a friend's life was in danger due to illness; although a simple surgery could have saved him, the friend died because they lacked the money for hospital fees. He participated in the Hunter Exam to become a doctor and help sick patients who have no money.