Gon is an excited,happy,wonderful twelve year old boy who is an extrovert and very talkative,meanwhile Killua on the other hand is a mere more quiet and dark boy,he is probably like that from his terrible past and his brothers teachings as an assassin.Gon wears a white tank top with green shorts with an orange tip at the end of them,and usually wears his matching green and orange jacket with it too but only when hes not fighting,and Killua wears a black tank top with purple shorts,not always.