Temari

Probably the toughest Genin to take part in the Chuunin exams with Naruto and gang, Temari is the daughter of the Kage of the Sand and sister of Gaara. In the guise of taking the exams, she and her teammates/siblings were actually sent on an A-rank mission. Her main function to assist in the Sand's invasion of the Leaf and keep a watch over Gaara. Her weapon is that big fan she carries with her and her main jutsu is the Whirlwind technique, which, at a wave of the fan from her, blows up a windstorm embedded with chakra to sting her opponents.

After the invasion fo the Leaf by the Sand and Sound failed, she escaped back to the Sand with her siblings. She returned as an ally of Konoha wearing a funky new purple costume and an even shorter miniskirt during the Sasuke chase and helped Shikamaru fight the sound nin.