Chiyo

Chiyo (チヨ, Chiyo) was a retired counsellor of Sunagakure and a famed puppeteer and leader of Sunagakure's Puppet Brigade.
Chiyo, often called "Honoured Grandmother Chiyo" (チヨバア様, Chiyo-baasama) by the Sunagakure villagers, was the village's poison and puppet expert. She and her brother Ebizō were highly revered in Sunagakure and were known as the "Honoured Siblings" (御姉弟, Gokyōdai). Chiyo was very knowledgeable when it came to handling poisons and used her skills often during the Second Shinobi World War, only to be countered numerous times by Tsunade's medical expertise. This caused Chiyo to hold a grudge against Tsunade, who she came to call "that slug-girl" (あのナメクジ娘, Ano Namekuji-musume), or the "Slug Princess" in the English translations. During the war, she also fought Hanzō and his salamander numerous times, learning how frequently it can use its venom and eventually developing an antidote against it.
Chiyo was responsible for sealing the One-Tailed Shukaku inside of Gaara under the orders of the Fourth Kazekage, though she admits that she discussed it at length with him before performing the technique, but to no avail. After this, Chiyo and her brother removed themselves from the affairs of Sunagakure and spent their time fishing together, where Chiyo would play jokes on her brother by pretending she had died just to scare him.
Chiyo also expressed a desire to kill Sakumo Hatake to avenge the killing of her son and daughter-in-law, which left her grandson Sasori orphaned. After that Chiyo tried to help Sasori ease the pain by caring for him and teaching him the Puppet Technique. Chiyo would later watch Sasori create his first puppets that would resemble his own parents. This was meant to fill the void of his parents dying, however, when Sasori left Sunagakure he abandoned the puppets, showing that he gave up on them.
As a veteran, Chiyo and her brother Ebizō possess great wisdom, such that Baki requested their assistance in the village's greatest danger. However, they had little motivation to serve Sunagakure any longer, as they retired and felt that the next generation should look out for themselves. The siblings were rather disappointed when the village was showing to be so reliant on others. Chiyo could be very mischievous she would play dead to to fool her brother, or act like a senile old woman. Chiyo would often also jump to conclusions as seen when she attacked Kakashi Hatake because he looked like his father Sakumo.
Unlike the rest of the ninja in Sunagakure, who believed that completing missions is more important than comrades' lives, which led them to suppress and eradicate sentiments, Chiyo is rather emotional and moral. She showed great love for her grandson, Sasori, no matter how much he had fallen, and was fully willing to grant life to the puppets that he created, at the cost of her own; this was said to be her dream. In fact, it was only Sasori's involvement in Akatsuki that she was willing to grant Baki's request for assistance. This love also led her to bear a grudge against Sakumo Hatake for killing Sasori's parents, and as such, she initially tried to kill his son Kakashi, mistaking him for his father. Chiyo showed care and respect for Sakura Haruno, despite the latter being a disciple of Chiyo's rival. She also showed regret and remorse for sealing the One-Tailed Shukaku into Gaara, and gave her life to revive the latter as a way of repentance.
Despite her age, Chiyo was still a very powerful ninja, and was well respected throughout Sunagakure. Even her rival, Tsunade, has great respect for her. With Sakura Haruno's assistance, she was also able to defeat Sasori.
Chiyo was a renowned master at the Puppet Technique, famous for her abilities in both creating and controlling them, to the point of being an invaluable icon for Sunagakure. She passed such skills on to her grandson, Sasori, claiming that the technique was traditional in their family. She modified two normal unarmed puppets to have intense battle capabilities, to the point where they were capable of standing up against the Third Kazekage (known as the strongest in the history of Sunagakure) who was converted into a Human Puppet by Sasori. These puppets were equipped with wire strings that extend from both of the puppets hands. When connected they have the ability to cut through most things, including Sasori's, Thousand Hands Manipulation Force. She also could use the Puppet Performance: Skilful Achievement with a Human Body technique, which allowed her to effectively control a human if she had no puppets left in her arsenal. She had great skill with chakra threads, as she could place them onto other puppets without her opponent noticing and suppressing them to the point that they became invisible, as well as using them to control and fire weapons.

Chiyo, like Sasori, modified a part of her body and turned her right arm into a mechanical one. She normally kept it outfitted with a chakra shield, and could replace it with any puppet arm if something were to happen to it. She also installed this shield on the Mother and Father puppets. Her strongest puppets, however, were the ten puppets created by the first Puppet Technique user, Monzaemon Chikamatsu. She was able to control each of them with only one finger per puppet, a skill which signified her as a master puppeteer. These puppets were extremely powerful, using teamwork to perform powerful attacks, and were equipped with powerful techniques such as the Three Jewels Suction Crushing and the Sealing Technique: Lion Closing Roar. With the assistance of Sakura, Chiyo's ten puppets were able to overpower Sasori's one hundred puppets, though most of the Chikamatsu Puppets where destroyed in the process.
While preferring to use puppets in battle, Chiyo demonstrated during her misjudgement towards Kakashi's identity that she was highly skilled in taijutsu from how easily she fought back Naruto and his clone. She possessed advanced knowledge of fūinjutsu as she was the one responsible for sealing Shukaku in Gaara. She was also a highly capable medical-nin, but mainly used her medical knowledge as a poison expert, which allowed her to create powerful poisons that in her entire life have only been countered by Tsunade, who is herself renowned as the world's greatest medical-nin. She has also remarked to have faced Uchiha members in the past and knows how to deal with genjutsu. She created a life-giving technique, one that would result in her own death if it were used, that she wanted to use for Sasori in order to give life to his puppet parents. She has stated that she used to fight with Hanzō and his salamander all the time; allowing her to know the antidote ingredient list to counter the poisonous gas released by the salamander.
After Gaara is kidnapped and Kankurō is poisoned by Sasori, Baki requests that Chiyo help in curing the poison. Chiyo initially refuses, no longer concerned with the fate of the village, but Sasori's involvement persuades her into helping. In spite of this, Sasori's poison is beyond her expertise to cure. Much to her own dismay, she admits that Tsunade would be the only one capable of healing him. Even with such an admission, she is not willing to contact Tsunade, believing firmly that asking other villages for help makes their own look weaker.
When Team 7 arrives after learning of Gaara's kidnapping, Chiyo instantly attacks Kakashi Hatake under the mistaken impression that he is his father. Naruto blocks the attack and Ebizō clears up the confusion, after which Chiyo plays the attack off as senility. With that over, Sakura is able to heal Kankurō, much to Chiyo's surprise. Once Kankurō is healed, Team 7 prepares to go after Akatsuki to rescue Gaara, and Chiyo joins them as an adviser from Sunagakure.
After reaching the Akatsuki hideout, Team 7 splits up to pursue the only two members present; Kakashi and Naruto go after Deidara, leaving Chiyo and Sakura to fight against Sasori. The battle goes in their favour at first, with Chiyo controlling Sakura to help her avoid Sasori's attacks and smash his "puppet armour", Hiruko. The destruction of his puppet forces Sasori to reveal himself, which also reveals the fact that he hasn't aged a day since departing the village twenty years earlier. Now unmasked, Sasori brings out the first of his human puppets: the Third Kazekage. This puppet is decidedly more powerful than Hiruko, and Chiyo is forced to summon Sasori's mother and father puppets just to fend off its powerful attacks. Even with the two puppets, Chiyo is overwhelmed by the Third's Iron Sand techniques, which prove to be a puppet's biggest weakness, leaving Sakura to be the one to destroy the Kazekage puppet.
Down another puppet, Sasori reveals the secret of his youth: he has converted himself into a puppet. The only living part of him remaining is his heart, making him difficult to kill. Since neither she nor Sakura can destroy his puppet body, Chiyo summons the Ten Puppet Collection of Chikamatsu. To mock the summoning, Sasori summons one hundred of his puppets, a feat only possible thanks to his unique body. In the ensuing battle, Chiyo destroys many of Sasori's puppets and vice versa. Both collections seem to be about equal in power because, despite the fact that Sasori's overwhelm Chiyo's in numbers, the quality and teamwork of her puppets far surpass his.
Using a special chakra-sealing orb given to her by Chiyo, Sakura tries to seal Sasori's Chakra Pathway System, only to catch his empty puppet body. Sasori, having ditched it moments before, simply goes to a spare body and tries to stab Chiyo with a poisoned sword. Sakura takes the blow in her place, giving Chiyo a chance to stab Sasori through the heart with his parents' puppets in the form of a hug. Before Sasori dies, he insists that at least Sakura can't be saved. Chiyo disagrees, and uses a special life force-transferring technique to heal her. While this would normally be fatal for the average shinobi, Sakura isn't quite dead, thus Chiyo doesn't die in the process. After Sasori dies, Chiyo speculates that he had actually taken the attack willingly, since he simply wanted his parents to hug him.
After reuniting with Kakashi and Naruto, who have succeeded in retrieving Gaara, Sakura pronounces Gaara dead, causing Naruto to break down in tears. Although Chiyo tries to calm him down, Naruto lashes out and blames her for his death, saying that if she hadn't sealed Shukaku within Gaara he wouldn't have died. In an attempt to apologise for what she had done, Chiyo tries to revive Gaara. Although she initially has too little chakra left to do so, Naruto donates some of his own to help finish the resurrection. With Gaara's revival, Chiyo realises that the future of Konoha and the Sand will be much better than things were back in her day, and then dies peacefully, with her view of the world changed thanks to Naruto.
In preparation for the Fourth Shinobi World War, Chiyo is resurrected by Kabuto Yakushi to fight against the Allied Shinobi Forces. After being mobilised, she becomes part of the group that Chūkichi requests assistance from, alongside Kimimaro and Hanzō. With this, Chiyo notes that the technique had been improved since Tobirama Senju's time and that the one who revived them must be something else, to bind so many souls at once.
Encountering the remnants of the Surprise Attack Division, where Deidara was imprisoned, Chiyo compliments Kankurō on defeating Sasori. When the opposition begins their retreat with her group in pursuit, she swears to take revenge against whoever resurrected her, while concerned about being embarrassed if they forced her to play dead. This results in an argument with Hanzō, who calls her a "puppet hag", to which she retorts that he was a "big snorkel geezer".
After Hanzō summons his salamander and recognising the poisonous gas it exhaled, Chiyo informs Kankurō that the creature requires five minutes to generate and use the toxin but that she knew the antidote, having fought with Hanzō before. Engaging the reinforcements from the Fifth Division with Kimimaro the following day, using an incapacitated samurai as a puppet, Chiyo observes the arrival of Naruto's shadow clone. Remarking that his height wasn't the only thing that had changed, she is then seemingly struck by Naruto's Wind Release: Rasenshuriken.