izuku midoriya.

Izuku Midoriya (緑谷出久, Midoriya Izuku?), also known as Deku (デク, Deku), is a student in class 1-A at UA. Even though Izuku was born Quirkless, he manages to catch the attention of the legendary Hero All Might due to his innate heroism and strong sense of justice, and has since become his close pupil, as well as a student in Class 1-A at UA High School. All Might passed on his transferable Quirk to Izuku, making him the ninth and final wielder of One For All.

Following the Paranormal Liberation War, with Tomura Shigaraki and All For One actively targeting Izuku for his Quirk, he decided to leave UA before finishing his first year to keep his classmates out of harm's way.[4] After encouragement and support from his friends, he later returns to the school and leads the heroes against the villains in one final battle to save the world. After the Final War, Izuku managed to defeat Tomura and All For One, but at the cost of rendering himself Quirkless once more.

Izuku is somewhat short for his age; his round face is framed by a short mop of fluffy dark-green hair that curls up at odd angles around his head, casting noticeably dark shadows on itself. His eyes are large and somewhat circular, and his irises are the same shade of green as his hair, which are sometimes very watery and usually stretched quite wide, giving him an innocent, energized appearance. He has a set of four symmetrical freckles in diamond formations, one on each cheek. Izuku has often been described as "plain-looking" or "not standing out" by others. Though initially very skinny, Izuku has gained toned muscles after his ten months of extensive training with All Might, and as the series progresses, these are shown to become more developed and defined as he gradually grows stronger. After his battle against Shoto Todoroki, the fingers on his right hand became slightly deformed, and his hand shows visible scarring. His right arm was further damaged after his intense fight with Muscular, leaving many more scars. Following his recovery after the previously mentioned fight, Izuku wears a black compression sleeve on the upper portion of his right arm to support the significant damage it sustained; it is partially visible when he wears short sleeves.

Izuku is a very timid, reserved, and polite boy, frequently overreacting to abnormal situations with exaggerated expressions. Due to years of being looked down on by Katsuki for lacking a Quirk, he is initially portrayed as insecure, tearful, vulnerable, and non-expressive. These traits are especially present around Katsuki, who also constantly harassed him for his aspirations to become a hero. However, after being accepted into UA, making new friends, and facing Katsuki during the Battle Trial Arc, Izuku gradually matures into a more confident and braver person who is always eager to prove his worth as a hero, eventually developing strong leadership skills, which, combined with his passion and strategic abilities, have turned him into a central figure within Class 1-A alongside Katsuki.

Overall Abilities: Izuku's greatest asset before receiving his Quirk was his vast knowledge of fundamental hero skills and tactics. Izuku studied Pro Heroes for years and is able to apply that knowledge practically during crisis situations. His immense bravery and desire to become a hero were also important factors in giving him the mentality to protect others. Before gaining his Quirk from All Might, he took on the Sludge Villain and rescued Katsuki because of his boldness and application of heroic skills, something that deeply impressed the No. 1 Hero. Trained Muscles: Using One For All requires the user to have strong muscles, as One For All is a lot to handle and could cause the user's body to be blown apart if they don't possess the necessary physical strength. Having been trained by All Might for 10 months to physically prepare his body to inherit One For All, Izuku gained a muscular physique that allows him to perform at parameters higher than that of an average student outside UA's hero course. During the Quirk Apprehension Test, he demonstrated a grip strength of 56 kilograms and the ability to run the 50-meter dash in 7.02 seconds (15.93 mph/25.64 kph). Even after these events, Deku diligently trains his muscles every day and becomes physically stronger throughout the series. He is often seen running laps and using dumbbells or grippers to train during his free time. Deku can also be observed doing the air chair exercise during breaks between classes. Immense Stamina: Izuku has shown on many occasions that he is capable of handling large amounts of pain. Such instances were mostly side-effects of overusing his Quirk and frequently led to various broken bones. Izuku is able to avoid these repercussions by staying within a safe range of One For All power output (currently, this is around 45%).

One For All (ワン・フォー・オール, Wan Fō Ōru?): Transferred to him from Toshinori Yagi, Izuku's Quirk allowed him to stockpile an enormous amount of raw power, significantly enhancing all of his physical abilities to various boundless levels. This resulted in unbelievable levels of strength, speed, stamina, agility, and durability. When Izuku activated One For All, red, vein-like lines coursed throughout the empowered part of his body.

Izuku could focus the stockpiled power into a single body part, or spread it evenly across his entire body, though focusing the power in a single part puts a greater strain on that part of his body. He was also able to control what percentage of his full power he used. Since he wasn't born with this power, his body wasn't naturally suited to handle it; however, over time and with continued training, his body has become more accustomed to bracing for the strain. He was able to handle 45% of his full power without breaking his bones, with 30% being his normal output.

80% of people in the world possess a so-called "quirk"—a special ability that grants a certain advantage in battle. As a rule, it is unique to each user, and except for genetic transmission, it is not replicated. The remaining 20% without a quirk have no special abilities; in other words, they are ordinary people. Heroes (ヒーロー, Hīrō) are people who use their quirks to protect civilians from villains or natural disasters. People who have chosen heroism as a profession are called professional heroes (プロヒーロー, Puro Hīrō). Heroes began to appear among ordinary people after the birth of a glowing child. The size of their government-provided salary, fame, and glory depend on how successful they are in the heroic field. There's a whole hero rating system. It's based on three components: popularity (approval of the hero's actions by civilians, merchandise, style), effectiveness (number of prevented crimes, list of victories and solved cases), and contribution to the heroic society. Hawk mentions that heroes ranked 20-30 get less work than the top ten and more free time. Each hero has their own hero nickname. Most heroes came up with their names back in school. A hero's name is considered extremely important for their career, as it's believed to bring ordinary people closer to the image they project and also reflects their true character. You can even take the name of an existing but currently inactive hero, but such a choice comes with great responsibility.

Villains are a general term for people with Quirks who commit crimes and endanger the lives of civilians. Villains were originally people who chose to use their newfound abilities for their own benefit instead of others, unlike heroes. Currently, the crime rate is quite low due to the superior number of heroes guarding law and order. UA Academy (雄英高校, Yūei Kōkō) is an academy where high school students are trained to become heroes. It is also one of the main locations featured in the heroes' story. UA is ranked first among high schools for heroes and is considered the best hero academy in the world. Students are divided into specific departments and classes – A, B, C, D, E, F, G, H, I, J, and K. At the entrance to the academy there is a security gate called the "UA Barrier," which automatically closes if a person trying to enter the academy does not have a student ID or special permission. Such measures were taken to prevent criminals or representatives of the press from entering the school premises.