When you look at this boy, how do you suppose he acts? Well its not your friendly neighborhood boy across the street i'll tell you that, this boy comes from a rich family of assassins who live up on an volcano that wont erupt and own almost three miles worth of land. Killua is a boy who isn't a blood lust type of assassin but only does it as a pay or if he has to do it like if there is a man/ woman with physiological problem that might want to destroy the world he'll have no choice but to do it. His lethal kill it to go faster than the speed of light and take someones heart right out of their body's at a fraction of a second.
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