killua is a 13 yr old boy who had trust issues and family problems. he hates his origin of being born into a family of true blood assassins and has become a hunter to get away from his family. he disseizes his mother father and three siblings other than his little sister alluka in which he loves her deeply. hes bestfriends with the green haired boy gon and wants to accompany him with finding his father. he had blue eyes and white hair. his nen ability is creating an aura an manipulating it.