Killua Zoldyck is one of the main characters in the anime series, HUNTERxHUNTER. He first meets Gon Freecss during the Hunter Exams and instantly became best friends. Being part of the Zoldyck family, Killua was raised to be a master assassin and heir to the family name, but decided to run away and explore the world. After meeting Gon, Killua realizes there is more fun things in life to do with his best friend.