SASORI

When Sasori was young, his father and mother were killed by Sakumo Hatake in battle,[4] leaving him in the care of his grandmother, Chiyo. When Chiyo attempted to cheer him up by teaching him puppetry at age five, Sasori's innate aptitude for the art became apparent, and he even began to devise masterful ways of eliminating a puppet master's weaknesses in battle. His skills even allowed him to create two puppets in the image of his parents in an attempt to discard the terrible loneliness he felt. However, as the puppets were unable to give him the real parental love that he desired, Sasori lost interest in them, and they later fell into Chiyo's possession. Sasori created many other ingenious puppets, including Kuroari, Karasu, and Sanshōuo, which were later owned by Kankurō. During the Third Shinobi World War, the effectiveness of his puppets in spilling enemies' blood on the sand gave rise to Sasori's moniker "Sasori of the Red Sand". However, motivated by his desire to make works that last forever, Sasori began experimenting to create puppets out of people. In the anime, his only friend, Komushi, lost his right arm during his border control duty, so Sasori gave him a new puppet arm. After Komushi perished, having accidentally ingested some of Sasori's poison, Sasori proceeded to turn him into one of his first human puppets.[5]

Sasori vs. Konan
Sasori being approached to join the Akatsuki by Konan.
Twenty years before his introduction in the series, Sasori left Sunagakure at age fifteen. Over ten years before his own death, Sasori secretly kidnapped the Third Kazekage and made him into one of his human puppets.[6] At some point before he turned himself into a human puppet in order to increase his own offensive capabilities and prolong his life, he was confronted by Konan who offered him a position in the Akatsuki. He responded by battling her to which he lost in the end, and joined the Akatsuki.[7]

Kabuto and Sasori
Sasori receiving intel from Kabuto.As a member