The Sand Siblings is the collective name for the children of Sunagakure's Fourth Kazekage: Temari, Kankurō, Kyoto and Gaara. Having underwent the gruelling training of their village, these three are regarded as elite shinobi of their village that excel in long-range combat.
In Part I they took part in the Chūnin Exams in Konoha along with their jōnin commander Baki. Although meant to appear as prospective chūnin, they were actually waiting for the invasion of Konoha to begin. They were later sent to aid the Sasuke Retrieval Team as a sign of goodwill between the now allied nations after what happened during the would-be invasion attempt.
In the final anime-only filler arc, the Sand Siblings chased after the Four Celestial Symbols Men who had kidnapped Gaara's student Matsuri. Kujaku battled Temari, Ryugan battled Kankurō, and Gaara battled Suiko. They each were almost killed until Shikamaru, Ino, Kiba, Chōji, Rock Lee, and Naruto saved them, to pay them back for the Sasuke Retrieval mission. Hōki eventually got Gaara to unleash the Shukaku, and revive Seimei, but Gaara destroyed him.
Some time after the invasion of Konoha failed, its members were promoted to government positions in Sunagakure: Gaara became the Kazekage, while Temari and Kankurō were promoted to the rank of jōnin.