Baki

is one of the strongest Sand Jonin in the Sand vilage.He is an important member of the Sunagakure's advisory council.He is probably the second-in-command after the Kazekage.He is respected throughout the whole village.He is also probably the Fourth Kazekage's most trusted Jonin as he was in charge of the invasion in to Konoha and the team leader of Team Baki, which consists of Gaara,Temari and Kankuro, the Fourth Kazekage 's children.He must be really strong because he was the teacher of Gaara who later became the Fifth Kazekage, who is probably in Part 1 and 2 the strongest and dangerous ninja in the Sand.

Personality
Baki is a loyal,kind and respected ninja.With his experience in battle, he holds a lot of confidence.He has a soldier personality,a patriot.Caring and kind, but if anything comes in his village or country's way or his loved ones,he will do anything to stop it. During the Chuunin exam, he had confidence in the ability of all of his team members, although he comments on Kankuro not taking the battles seriously enough. He also worries frequently about Gaara's mental stability and his control over Shukaku. However he later on fell in love with gaara and was easily killed due to lack of body.

Konoha Invasion
Baki was first seen watching the preliminarily rounds of the third part of the Chuunin exam.He doesn't talk much except for giving advice to his students and to warn Gaara to be careful in killing.Baki was seen again after Dosu died trying to kill Gaara before the third part of the Chuunin exam began so he could get a good chance of fighting Sasuke.Baki meets Yakushi Kabuto after his escape from Kakashi in the Konoha Hospital, when he was instructed by Orochimaru to kidnap Sasuke but later changes his mind and tries to kill Sasuke, when he was stopped by Kakashi.In the one-on-one Sand and Sound meeting,Baki asks why they had let Dosu die.Kabuto replied by saying they were just test subjects, who were disposable.Then they review the plan to invade Konoha.When they discover and uninvited Leaf ninja,Hayate Gekko listening in the shadows.Baki refuses Kabuto to kill Hayate, and offers to kill him as a sign of trust between the Sand and Sound.Hayate tries to escape, but Baki caught up with him.Hayate starts to fight but when his move The Dance of the Cresent Moon fails when Baki's Sand Jonin vest absorbs the attack.Baki states that Konoha was strong to have a ninja so young to master the Dance of the Cresent Moon.Then he says a blade of wind is impenetrable and can slice through anything.Afterwards,he used the only jutsu Baki is seen to have used The Blade of Wind on Hayate,thus killing him.Though in the anime he is seen rounds led the fight with the Sand and Sound shinobi in the Konoha stadium during the invasion and had an unfinished duel with Genma.

Baki was also the one who murdered Hayate Gekko after discovering him eavesdropping on a conversation about the plot to destroy Konoha, in order to earn the trust of the Sound Village.

Rescue the Kazekage
He seems to be serving on Suna's advisory council. When Kankuro was injured by Sasori, Baki seemed to be concerned about Kankuro's condition.