Sasori no Akasuna

When Sasori was young, his parents were killed by Sakumo Hatake, leaving him with no one but his grandmother, Chiyo, to take care of him. To cheer up Sasori, Chiyo began to teach him the art of making puppets. He began making puppets at the age of five, and even made puppets that resembled his parents to get rid of the terrible loneliness he felt. But because they were only puppets, incapable of giving him the natural parental love he desired, he lost interest in them. They later fell into Chiyo's possession. Sasori proved to be a born natural at the art, even devising masterful ways of eliminating a puppet master's weakness.

Sasori created many ingenious puppets, including the ones that were owned by Kankurō. During the Third Great Shinobi World War, these puppets were used so successfully, they dyed the sand red with blood. This gave rise to to the name Sasori of the Red Sand. Twenty years before his introduction in the series, he left Sunagakure, though not before secretly kidnapping and killing the Third Kazekage (although his involvement in the Third's disappearance would not be discovered until around the time of his death). More than that, Sasori eventually converted himself into a human puppet to maintain his youthful appearance and increase his own offensive capabilities, but retained his heart — the only still-living part of his body — in a cylindrical container in the left part of his chest.

Sometime after leaving the village, Sasori joined Akatsuki, and was eventually paired with Orochimaru. They had great respect for each other during their partnership, and did many things together. After Orochimaru left Akatsuki (after a failed attempt at stealing fellow member Itachi Uchiha's body), Sasori was teamed up with Deidara, although he always carried a grudge against his former partner. He sent Kabuto Yakushi to spy on Orochimaru, but Orochimaru dispelled Sasori's jutsu and convinced Kabuto to join him. Sasori was also shown having numerous other underlings and spies in many nations, such as Yūra and Mukade.

Without his puppet armor he maintained the appearance of a teenage boy with wide brown eyes, and short red hair. As a child, he wore green robes with a pale jacket around them. As an adult, he was mostly seen in the Akatsuki robe. When Sasori revealed his true body, which was a puppet with a pair of spinning claws attached to the backsides, a holder for four scrolls on the back, a stinger in the empty and open stomach cavity, a compartment in the right chest, and a core in the left, his eyes were wide open in a maniacal-like way, as opposed to his normal calm looking eyes.

On his left thumb was his Akatsuki ring, which bears the kanji for Jewel or Sphere (玉, gyoku). Sasori also wore teal nail polish. Even though he possessed a headband from Sunagakure that was slashed out, he was never seen wearing it.

As a child, Sasori always seemed sad, due to the lack of parental love. When introduced to the art of puppetry by his grandmother, Chiyo, he grew a little happier. He eventually created puppets with the likeness of his parents, but when the puppets couldn't give him the parental love he desired, he became cold and aloof. This led to him having little regard for human life, and he went so far to state that he would feel nothing if Chiyo died, as he claimed that his heart had become like his puppet body: without any emotions. Despite his cruelty, Sasori also had been shown to possess a very down-to-earth outlook on life, rarely growing worked up over obstacles that came his way. He also rarely showed any extreme emotions, and even these instances were short-lived.

Sasori was also known for his impatience, as he repeatedly noted that he did not wish to wait or keep others waiting, which was quite ironic since he had all the time in the world due to his puppet body.

Sasori and his second partner in Akatsuki, Deidara, both had conflicting views of art, and they frequently argued about their different views. Deidara maintained the opinion that art was something transient that departs quickly, where as Sasori believed that fine art is something wonderful that is left long into the future. This reflected their individual natures; Deidara made clay sculptures which exploded, while Sasori created long-lasting puppets out of humans. Nevertheless, Deidara outwardly seemed to respect Sasori's beliefs, although Sasori never respected Deidara's.

Sasori's ambition was to become art by becoming a puppet, because he thought art is something wonderful that is left long into the future. He abandoned this ambition when Kankurō told him that it was his creations that he put his heart and soul into would last forever. After accepting Kankurō's view on eternal art, he entrusted his Mother and Father puppets to Kankurō, and told him to pass them on to the next generation when he dies. In this moment, he is shown to have an emotional side as well.

Also worthy of note is that he was willing to accept other people's views on certain topics, unlike Deidara, who stubbornly stood by his beliefs.