Yasutora Sado (茶渡 泰虎, Sado Yasutora^?) is a fictional character and major figure in the anime and manga series Bleach created by Tite Kubo. He is a teenager who studies in the same class as Ichigo Kurosaki. Because Ichigo first read Yasutora's name off a nametag, he pronounced his family name as Chad (チャド, Chado^?) due to the variable pronunciations of kanji, and Ichigo continues to call him this throughout the story.

Chad was born in Okinawa, Japan, but was taken to Mexico by his parents at a young age. After their deaths, Chad was adopted by Oscar Joaquin de la Rosa, a man believed to be his grandfather since Chad calls him Abuelo ("Grandfather" in Spanish).

During his early years, Chad was extremely violent. Exploiting his advantage in size, he intimidated and hit any children who annoyed him. Oscar Joaquin tried to teach Chad to be gentle, but was initially unsuccessful. One day, the fathers of the children Chad fought, seeking to punish him, attacked Chad. Oscar Joaquin stepped in between them, taking Chad's punishment without retaliation. Chad was inspired by this example to become a decent person. Afterwards, Oscar Joaquin gave Chad a Mexican coin. The coin was minted sometime between 1823 and 1909, and has the words "Republica Mexicana" engraved on it, as well as the Mexican National Emblem. The monetary reform of 1905 minted Mexican coins with the words, "Estados Unidos Mexicanos’," are seen on the Mexican peso today.

Years later, when Oscar Joaquin had died, Chad made a vow that he would never fight unless it was to protect others, as instructed — even if his own life was in danger. The coin would come to symbolize this vow, which Chad now claims to hold more value than his own life. Many years later, this was used against him when some thugs captured him and threatened to destroy the coin. Ichigo saved him from them, and made a pact with Chad that they would fight for each other, because Chad wouldn't fight to protect himself.

When de la Rosa died, Chad decided to return to Japan, where he entered Mashiba Junior High School. Because of his constant involvement with gangsters, Chad gained a reputation as a ruthless gangster himself. Others were scared of him when he first entered Karakura High, though this later changed. He met Ichigo slightly before the school year started when he saved Ichigo from being injured by local thugs. Eventually, he and Ichigo graduated from Mashiba and entered Karakura High School.

Abilities

When first introduced, Chad had no special powers aside from his unusual strength and endurance. Even without his powers, Chad is strong enough to break a telephone pole and swing it like a bat, and likewise is resilient enough to be hit by a falling steel girder and only suffer minor wounds.

After his encounter with the cockatiel containing the soul of Yūichi Shibata, he started to detect the approximate locations of spirits and hollows, but could not fully see them. Only after saving Karin Kurosaki from a hollow, during the hollow-slaying match between Uryū and Ichigo, did Chad begin to fully see spirits.

At the same time that he became able to clearly see spirits, he also awakened his latent spiritual ability, which manifests as armor on his right arm called the Brazo Derecha de Gigante (巨人の右腕（ブラソ・デレチャ・デ・ヒガンテ）, Buraso Derecha De Higante^?, Spanish for "right arm of the giant"). The armor is colored black with a red stripe going down the center and two white stripes surrounding it (the same colors used on Mexican military dress uniforms). Chad's armor increases his strength beyond its already impressive level, and enables him to fire powerful energy blasts from his fist. After receiving training from Yoruichi Shihouin, Chad learns to activate his powers at will and gains enough stamina to fire multiple blasts.

After seeing how helpless he was against the arrancar who invaded Karakura Town, Chad requested that Kisuke Urahara train him. Urahara proceeded to pit him in single combat against Renji Abarai's bankai. He noted Chad's powers still had room to grow, but they did not resemble those of a Quincy or Soul Reaper. After training with Renji, Chad gains an improved version of his armored arm. Compared with its previous form, the pattern on Chad's arm becomes more intricate, loses the white accents, and gives him an even greater increase in physical might. Chad also gains a new special attack called El Directo (巨人の一撃（エル・ディレクト）, Eru Direkuto^?, Spanish for "the direct," Japanese for "giant's strike"). To perform it, the flanges on Chad's arm open up and he punches the enemy.

While in Hueco Mundo, Chad's powers were affected by the environment, which disturbed his abilities. It was not until being beaten for some time by Gantenbainne Mosqueda that Chad's powers settled. With this, Chad realized that his powers were more at home in Hueco Mundo since they resembled hollow powers. When Chad was attacked by Gantenbainne, the arm felt it like an attack from its own kind and regained its composure, allowing Chad to finally admit to himself the truth about his power. This allowed him to more deeply tap his powers, which manifests as armor on both arms, instead of just his right. In addition, he also gains the ability to move at high speeds in a manner similar to flash steps and sonido.

Chad's full-powered right arm is still called the Brazo Derecha de Gigante but is now used for defense instead of offense (though it's still more powerful offensively than his original arm). Chad says that "the soul of [his] Abuelo flows through [his] right arm," which may mean the literal manifestation of his grandfather's spirit in the arm, though it is more likely that Chad was speaking metaphorically of his grandfather's teachings. Brazo Derecha de Gigante becomes a shield that extends from his hand to some distance beyond his forearm with the same intricate pattern as before, surrounding what appears to be hollow-like teeth in the center and a rose like pattern near the end. He also loses the wing-like protrusion which extended from his shoulder, replaced with an angular plate sitting over his shoulder.

Chad's armored left arm, used for attack, is known as the Brazo Izquierda del Diablo (悪魔の左腕（ブラソ・イスキエルダ・デル・ディアボロ）, Buraso Isukieruda Deru Diaboro^?, Spanish for "left arm of the devil"). It looks similar to his original armored arm, but the color is red and white and it has a more streamlined appearance. A spike protrudes from the shoulder and two more extend over his chest. It also has a physical appearance closer to that of a hollow, which supports Kisuke Urahara's comment that Chad's powers are closer to that of a hollow than a Soul Reaper. When compared side-by-side with Ichigo's arm, when in his full hollow form during his Vizard training, the two are remarkably similar. Although this arm is used for offense, it has been shown to have some strong resistance against attacks as shown when Chad blocks Gantenbainne Mosqueda's energy blasts by using only his armored left arm. With this arm, Chad gains a special attack known as La Muerte (魔人の一撃（ラ・ムエルテ）, Ra Muerute^?, Spanish for "the death," Japanese for "devil's strike"). To perform it he channels energy into his fist and punches his enemy; when used on Gantenbainne, who was against a wall, the wall cracked in the pattern of a huge skull.