Bakugou Katsuki/Kachan

Katsuki has a characteristic appearance. He has spiky ash-blonde hair that sticks out in all directions, orange eyes that sometimes appear red, and a permanently furrowed brow. In middle school, he wore the standard school uniform, with the exception of a tie. Underneath his jacket, he wore a shirt that he never buttoned all the way. His pants, despite having a belt, were always hanging down, giving him a baggy appearance.

Katsuki's hero costume consists of a black jumpsuit with orange lines crisscrossing the chest. He wears black gloves that go above the elbow, onto which he attaches special devices in battle; black boots with orange inserts, a green belt, and iron knee pads. He also wears an unusual iron ornament with three holes on each side on his neck. Katsuki wears a black mask and attaches a "spiky" ornament to his head that is black with an orange tint, imitating an explosion, similar to his hair. The winter version of the costume is distinguished by a black turtleneck with a high collar, which also has orange holes.

Katsuki Bakugo is a rude, arrogant man who may seem like an antihero or even a villain to those who meet him for the first time.

Determined and eager to win, Katsuki always has a scary smile on his face during battle. He is unwavering in his pursuit of his dream. Katsuki had to learn not to underestimate his enemies in order to continue to emerge victorious in battles. Despite his character, he is very talented and intelligent, which is especially noticeable during battles, where he comes up with complex strategies and is extremely agile with his quirk, using it not only in direct and brutal attacks. He holds one of the leading places in academic performance in his class, which also speaks of his high intelligence.

Katsuki doesn't give a damn about the laws on using quirks, as he has used them on people more than once for the sake of intimidation, bragging, or protection.

Explosive Wave (爆破 Bakuha): The sweat on Katsuki's palms is like nitroglycerin, and he can use it to create explosions.

Katsuki fighting style-0 Katsuki shows masterful control over his quirk.

The more Katsuki sweats, the more powerful his explosions become. So far, he has used his Quirk through his hands, usually amplifying his attacks with the explosions created. Katsuki's most powerful explosion to date (without the use of the Grenadier Bracers) was able to completely destroy Ochaco's meteor shower, knocking her off her feet and causing a shockwave that rippled through the stadium.[4] With his extensive combat skills and intelligence, Katsuki has made his Quirk deadly and versatile.

Katsuki suffers no effects from his explosions, with the exception of the powerful recoil, which he also endures with ease, although prolonged use of his Quirk takes a toll on the muscles and joints of his arms. It is currently unknown if he is susceptible to explosions from any source other than his own Quirk, but during the sports festival, he ran directly over buried mines without harm.[5] He is also capable of remaining airborne for a short period of time due to the repulsive force of his Quirk.

One of the drawbacks of Katsuki's Quirk is that using the Quirk in rooms filled with gas is too dangerous. Also, since his Quirk relies on increased sweating of the hands, it is more difficult to use in colder climates as its power will decrease.

Izuku is a slightly short guy for his age, with a rounded face, small symmetrical freckles on both cheeks, large green eyes, and dark green curly hair that sticks out in different directions and casts noticeable shadows on itself. All of these characteristics give him a rather sloppy, yet energetic appearance. He was originally quite thin, but after training with All Might, he gained well-developed muscles.

During his elementary school days, he wore a Japanese black Gakuran uniform with yellow buttons. In UA, he wears the standard male uniform: a light gray jacket over a white shirt and dark green pants, along with a red tie that he does not tie properly. Izuku also always wears tall red boots with white soles.

Izuku's first hero costume consisted of a light green jumpsuit with a red belt, black elbow and knee pads, white gloves, and his signature red boots. He also wore a mask with ear-like protrusions reminiscent of All Might's hairstyle and a respirator in the shape of a smile. This costume was severely damaged during his training battle with Katsuki Bakugo, forcing Izuku to send it in for repairs.

During the Fake Disaster Zone Arc, Izuku wore the UA uniform, which consisted of a blue tracksuit with a collar and white stripes that formed the letters "UA". He also wore a black respirator with knee and elbow pads.

Izuku's hero costume has since undergone some changes, making it look more durable and combat-ready. The green has become darker, the white panels on his torso have become dark gray, his knee pads have become significantly longer and now reach his thighs, and his gloves are decorated with blue stripes. His respirator is now metal and has eight small holes. Izuku also does not wear his mask in this costume, despite it still being present and now resembling a hood.

Izuku is a very timid, reserved, and polite guy. At the beginning of the story, due to being bullied as a child for being born without a Quirk, he appears withdrawn and expressionless, especially in front of Katsuki. As a teenager, Izuku was the target of bullying, the main initiator of which was Bakugo. But despite this, he continues to consider Katsuki his friend, and after entering UA and defeating him in the "Trial Battle", he became more confident and bold.

Izuku is also diligent and strong-willed. Izuku is incredibly goal-oriented. Ever since he decided to become a hero, he has been writing down everything he learns about Heroes and their Quirks, including the students at U.A., in his notebooks. He is very caring and will never abandon someone in trouble, even if he knows he is not strong enough to protect them. When someone is in trouble, Izuku will always try to help, even though it is not his business. He often does this on a whim, without immediately realizing what has happened.

Izuku Mumbling Rapid muttering

Izuku has a habit of pondering things that interest him for a long time and muttering under his breath. Izuku's heroic spirit is recognized by many, and he has also earned the loyalty and gratitude of people who were previously antagonistic to him, such as Tenya Iida, Shoto Todoroki, Kota Izumi, leading him to be recognized as a true hero by Stain and Lady Nagan.

Of all the heroes, All Might has had the most influence on Midoriya's life, shaping most of the goals and beliefs that Izuku has followed since childhood. Many of Izuku's decisions and actions are inspired by his desire to become a hero like All Might, and as such, he deeply respects his idol, going as far as collecting various hero-related merchandise and emulating some of his traits. Having inherited his Quirk, Izuku has made it his primary goal to live up to his idol's legacy, as he is always looking for ways to improve his use of the Quirk, aware of the immense pressure that comes with the official retirement of the No. 1 Hero.

One For All: Full Coating (ワン・フォー・オール フルカウル Wan Fō Ōru Furukauru): Izuku channels a certain percentage of One For All's power through his body on a permanent basis, rather than momentarily like the techniques described above, allowing him to fight longer without breaking his bones. This method of using the Quirk gives him greater maneuverability.[4] Activating this technique grants him increased strength, speed, mobility, and agility.[5] 5% Detroit Smash (5 Pāsento Detoroito Sumasshu): Izuku activates One For All Full Coat, then jumps into the air and delivers an enhanced downward punch to the opponent.[6] He has also used this move as a straight punch.[7] Delaware Punch Aerial Attack (デラウエアスマッシュエアフォース, Deraruea Sumasshu Eafosu): Izuku uses his upgraded gloves that Hatsume Mei made for him to fire a shockwave of compressed air at his enemy, possessing enough force to stun the opponent. This move was used while free-flying against a fleeing villain.[8] Using all five fingers, he can fire up to four Delaware Punches at once.[9] Izuku uses 100% on Muscular One for all - 100%

One For All 100%: A technique that allows Izuku to attack using the full power of his Quirk on a desired part of his body, causing massive damage to it. Continued use of the same limb after one such attack can cause fractures, as seen in his fights against Shoto Todoroki (resulting in Izuku having surgery on his right arm) and muscle tears (leaving several scars on his right arm).