Away from Gon, the other charactors were well writen too. Kurapica, Leorio, and Killua were also well designed. Killua being cunning, and seemingly careless, but can become really dangerous; Leorio who's careless and sometimes lazy actually has a serious cause; Kurapica, who's always so troubled can also smile and laugh with everyone else. I feel that the characters are very well developed, and it gives the feeling that something interesting is gonna happen.
The animation was well done. Especially in the episode where Killua was holding a heart. It looked very realistic. There was suddenly a very scary side to Killua even though we already know he's an assasin. As if it was real, the heart kept on pounding too!
This is an anime that i find worth while to watch. ^^
