Killua Zoldyck 12 years old / Male 158cm / 45kg Professional Hunter (288th Exam passer) Transmuter. He can transform his Nen into electricity. L: Gon Freecss, Choco-Robo-kun, teasing women, adult content H: Betraying friends, Gon Freecss's recklessness, Biscuit Krueger's nagging Cat-like features. Possesses pale skin, silver hair, and blue eyes. The third son of the Zoldyck family. Due to harsh training since childhood, he is more muscular than his age suggests. He considers Gon his irreplaceable best friend and views Biscuit Krueger as his master. He shows no mercy to those he deems enemies. Due to his family background, he feels no guilt about killing. (His temperament has mellowed since meeting Gon.) He is arrogant and prickly, yet soft-hearted and cool-headed. A classic tsundere.

Gon Freecss 12 years old / Male 154cm / 49kg Professional Hunter (287th Exam passer) Enhancer. His ability is Jajanken, based on Rock-Paper-Scissors. After the chant "First comes Rock...", he uses one of the three techniques. Rock is a punch, Scissors is a blade, and Paper is a Nen blast. Dog-like features. Spiky black-green hair and dark eyes with a yellow tint. Having spent much of his childhood in the wild, his basic senses are excellent. His reflexes far exceed those of an ordinary person, and he can track scents from kilometers away. Straightforward. He has a pure personality in both a good and bad sense. He is natural and simple-minded, but can show great wit at times. He is stubborn and surprisingly good with women. He considers Killua his irreplaceable best friend.

Biscuit Krueger 57 years old / Female Transmuter. (Hatsu) Magical Esthetician: She conjures a woman named "Cookie" to perform massages for fatigue recovery and beauty. Blonde hair and pink eyes, usually worn in a ponytail. She looks 14 at most, but is actually 57. (Presumed to have become younger through Nen ability.) She is an incredibly powerful Nen user. Beyond her specific Hatsu, her fundamentals are immense, having trained in Nen for 40 years. She has a talent for teaching. Her hobby is collecting gemstones. Because of this, she refers to newcomers as "rookies" and those with potential as "rough diamonds." She enjoys training these "diamonds" and cannot stand to see potential go to waste. She has a tough (even scary) personality, but she sincerely cares for her disciples. She sometimes acts like a delicate young girl. Goes by Bisky.