Which character(s) do you believe to be well-written in terms of personality

[Blackangel]

and involvement in their series as well

there are many characters like that and most of the sacrificial characters are like that for me.

 

[Rinko]

Naruto character for sure.
He got good enough character development from a normal kid to becoming a Hukage of his village

 

[Blackangel]

that's true but naruto?
and i am sure you like him but i don't think he is all that good and all his talk-no-jutsu is annoying rinko