Baki

is one of the strongest Sand Jonin in the Sand village. He is an important member of the Sunagakure's advisory council and is probably the second-in-command after the Kazekage and 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. It is speculated that he is very strong, considering that he was the teacher of Gaara who later became the Fifth Kazekage, who is probably in Part 1 and 2 the strongest and most dangerous ninja in the Sand Village.

Personality
Baki is a loyal, kind and a respected ninja. With his experience in battle, he holds a lot of confidence. He has a soldier personality, a patriot. A caring and kind person, but if anything comes in his village or country's way or his loved ones, he will do anything to stop it. During the Chunin 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.

Chunin Exams
Baki was first seen watching the preliminarily rounds of the third part of the Chunin 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 Chunin exam began so he could get a good chance of fighting Sasuke. Baki meets Kabuto Yakushi 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 Kinuta 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, Kabuto is about to go kill him, when Baki stops him. Stoping Kabuto, Baki offers to kill Hayate, 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 Crescent 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 Crescent Moon. Then he says a blade of wind is impenetrable and can slice through anything. With this this he demonstrates the technique and viciously attacks Hayate, thus killing him.

Konoha Invasion
He is seen next time during the final rounds, that led to the Konoha invasion with the Sand and Sound shinobi. When Gaara lost control he tells his team to bring Gaara to safety noting that his earlier transformation had slightly changed their plans. However before he can follow, he is challenged by the new examiner Genma Shiranui, a battle that is interrupted when the invasion is blown off.

He is later seen discovering the decomposed bodies of the Fourth Kazekage and his bodyguards, realizing that they were all tricked by Orochimaru.

Rescue the Kazekage
He seems to be serving on Suna's advisory council. During the fight between Gaara and Deidara he was quick to order the evacuation of the village, and ordered the remaining shinobi to prepare offensive measures to help their new Kazekage. Later when Kankuro was injured by Sasori, Baki seemed to be concerned about Kankuro's condition.

Trivia

 * Despite Baki now officially being an ally to Konohagakure, Hayate's, Yugao, swore to avenge Hayate, leading to the question of what will happen should their paths cross.