Shinki

is a shinobi of Sunagakure's Kazekage clan.

Background
In the anime, as a young boy Shinki was unable to control his power, prompting Gaara to approach him. Fearful, he attacked the Kazekage, during which Shinki became shocked at Gaara hugging him despite injuring the man. Offering to teach Shinki how to use his power, he told Gaara his name before accepting his offer. Following the encounter, Gaara adopted him.

Personality
Shinki is described as the calm and collected leader-like figure of his team. He's shown to be very prideful and proud of his heritage, telling his adoptive father their team won't tarnish his name and will achieve victory. Despite his young age, Shinki has the seriousness of an adult to the point even his uncle Kankurō is afraid of making him angry.

Having no interest in fighting anyone who's weak, he viewed the calibre of most genin competing in his Chūnin Exams as sad and nothing to worry about. Despite considering himself as being no match against Kinshiki and Momoshiki Ōtsutsuki, Shinki attempted to fight them, but instead chose to abide to Gaara's orders of not facing the pair.

Appearance
Shinki has dark spiky hair, small eyebrows and green eyes. Just like Kankurō, Shinki sports face paint, which takes the shape of two red markings that are similar to designs on Gaara's Sand Gourd.

His outfit consists of a Suna flak jacket, a brown full-body outfit, which covers his throat, complete with a dark blue Suna forehead protector and black calf-length shinobi sandals. He can also sometimes be seen wearing a large black coat with a fur collar, made of Iron Sand. He is also seen carrying his skeleton-like puppet alongside him.

In the manga, he doesn't wear a flak jacket, instead wearing a dark body suit with an asymmetrical armor plate on his chest, a long belt tied at the waist, and bandages wrapped around his wrists and ankles.

Abilities
Shinki is a puppeteer that's considered the ace of his village, who excels in his team due to his observant eye. He could single handily defeat Team 5 in combat with ease, and due to possessing extraordinary chakra, Team 10 was regarded as having no chance against him.

Ninjutsu
Utilising Iron Sand in the form of a cloak for himself and his puppet, Shinki is capable of manipulating its structure using his kekkei genkai Magnet Release, which is a combination of Earth and Wind Release. Being able to freely manipulate the substance while remaining stationary, he can use it to withstand strong taijutsu attacks, constrict and restrain individuals, create objects, such as fists or needles, and levitate in the air.

Versus Momoshiki Arc
Departing Suna on a Thunder Train to participate in the Chūnin Exams held at Konohagakure, Shinki expressed his belief that his team would achieve victory and would not sully his adoptive father's name. He exclaimed that the other teams would be no problem for them. In the first round, the genin had to answer a truth or false question. To their surprise, it was trick question that automatically caused the genin to fall into an pit of ink. However, Shinki is able to use his Iron Sand in time to keep him and his teammates afloat, allowing them to pass the round. Three days later, for the second round of the exams, Shinki's team competed in a game of capture the flag against Team 5. While Araya and Yodo guarded their flag, Shinki managed to defeat Denki Kaminarimon and Iwabee Yuino. Asking not to be disappointed, Shinki effortlessly blocked all of Metal Lee's attacks, leading to him capturing Team 5's flag after he became distracted by anger.

In the final round, he was matched against Chōchō Akimichi and defeated her using his Iron Sand. When Kinshiki and Momoshiki arrived on the arena and began their attack, Shinki tried to join the offensive against them, but was stopped by Gaara, who told him that it's not the kind of enemy he can take on and that they should focus on evacuating the civilians instead. After the ordeal a few days later, Shinki's team boarded a Thunder Train with Gaara and Kankurō in preparation to return to their village, during which he was thinking about Boruto Uzumaki somehow managing to defeat Momoshiki. Apologising for holding his son back during the attack, Shinki said the matter was instead about not seeing himself winning in that situation.

Trivia

 * According to character trivia from Boruto:
 * Shinki's hobbies are gardening and embroidery.
 * His favourite foods are gizzard and braised stew, and his least favourite food is nattō.