Sabaku no Gaara

He is Jinchuuriki.

but he became Kazekage..

his skill is sabakukyuu,sabakusousou,etc...

and he is Naruto's friend.

sharingan Kakashi

He has been known as a genius of Konoha ,which is copy ninja kakashi

The secret of his strongness is sharingan.

but he isn't uchiha clan

kimimaro

He was too fast to die
Kimimaro fight Gaara

and he was die
Because ill

last of byakuya clan