Cheeky, funny, humorous, a little spoilt, he deeply cares for the ones he is close with, doesn’t like his family, wants to stop being an assassin, wants to be normal. He comes from a family of notorious assassins and is trained in various forms of combat from a young age. Killua possesses incredible agility and reflexes, and has the ability to use electricity as a weapon. Despite his upbringing, he befriends the protagonist Gon Freecss and develops.