When I heard that they were after my buddy... I couldn't do anything!! I didn't do anything!! If I don't act now... forget being a hero, I'm not even a man!
Eijiro Kirishima to his classmates about Katsuki Bakugo's kidnapping in "Defeat"

Eijiro Kirishima ( (きり) (しま) (えい) () (ろう) Kirishima Eijirō?), also known as the Sturdy Hero: Red Riot (剛健ヒーロー 烈怒頼雄斗 (レッドライオット) Gōken Hīrō Reddo Raiotto?), is a student in Class 1-A at U.A. High School, training to become a Pro Hero.


Eijiro is a muscular young man of average height, with a rather impressive physique, despite his young age. He has red eyes that are pointed slightly inwards, a small scar just above his right eye which Horikoshi admits he frequently forgets to draw. He also has small eyebrows and very pointed teeth. His hair is reasonably short, dyed a bright red, and spiked away from his head at all angles with gel, two more pronounced tufts spiked on either side of his forehead like little horns, this lofty style taking a full 3 minutes to set.

In his middle school days, however, his hair was black and left in its natural state: just under shoulder-length with some shorter bangs between his eyes, but he changed it to his current style shortly after being accepted into U.A. High School.

During school, he wears the normal U.A. uniform, just with dark red trainers instead of the usual brown dress shoes.

In his hero costume, he wears two gear-shaped shoulder pads, dark red in color, a jagged sash joining the one in his left to the right side of his belt, which has a red “R” set into its center, standing for his hero name, “Red Riot”. Below this, he wears baggy black pants and half cape with a ripped hem, also sporting black boots, multiple thick rings going around his calves. He leaves his chest bare, and wears a wired guard around his face, reaching from just above his hairline to below his jaw, an extra piece going over the bridge of his nose, and some spiked pieces around his mouth which resemble little fangs. This look overall makes him look a little like an Oni, which is a troll-like creature commonly seen in Japanese folklore, but whether this was purposeful or not hasn’t been confirmed.

During the Provisional Hero License Exam Arc, his costume later gains black sleeves, which he wears to prevent civilians from being hurt by his Quirk during rescues.



Eijiro's Tears

A spiritually-moved Eijiro.

Eijiro is a boisterous and outgoing guy with a fondness for the concept of manliness, often using the terms "manly" and "unmanly" to describe things and people he does or doesn't like. Those who showcase a noble, brave, and/or determined attitude tend to emotionally move him to tears, quickly earning his complete admiration, respect, and friendship. Similarly, he will call out traits that are the opposite of that, such as cowardice and dirty play. He is also a big fan of Crimson Riot, a retro hero that he takes inspiration from, including his own hero name.

Eijiro is very honest and kind-hearted, with All Might praising his heroic spirit. In addition, he seems capable of making friends with most people, as he is one of the few classmates who is friends with both Katsuki Bakugo and Izuku Midoriya. Eijiro is very dedicated to his friends, especially Katsuki (who he's very loyal to), and is even willing to break laws and rules in order to help them, showing regret if he becomes unable to aid in any way. This sometimes leads to Eijiro being very hard on himself.

Eijiro has stated more than once that he does not think very highly of his own Hardening Quirk, thinking that it lacks the flashiness usually found in the Pro Hero scene. In fact, he will get downright offended if he finds someone with a similar Quirk.[1] Eijiro also has concerns about not having a good enough Quirk for hero work, worried that his skills could not compare to those of others. A lot of this self-doubt seems to have come from an incident in Junior High when Eijiro saw Mina Ashido stop an underclassman from being bullied and save some students from a threatening figure.[2][3] Eijiro's friends pointed out that Mina will easily become a Hero due to her outgoing personality and athletic nature. After this, Eijiro thought of himself as dull and boring, considering himself pathetic for his inaction and powerlessness.[4]

Regardless, in the present, Eijiro decided to reinvent himself after being accepted into U.A. High, adopting a tough, confident, fiery persona, although not to the same extent as Katsuki. Eijiro, however, does not shy away from comparing himself to him, with Izuku stating that the two have managed to develop a relationship between equals. Because of this, Eijiro is notably one of the few people that Katsuki holds in higher esteem.


Katsuki vs Eijiro

Eijiro's prowess allows him to force Katsuki Bakugo on the defensive.

Overall Abilities: Eijiro has proven himself to be a very formidable individual on numerous occasions. His abilities earned him 2nd place in the U.A. Entrance Exam, having a fair balance of both villain and rescue points, and 8th place in the Quirk Apprehension Test. Thanks to his Quirk, Eijiro's fighting style is straightforward and reckless, letting his hardened body take opposing hits while delivering counterattacks.

Eijiro has shown to be as formidable as Tetsutetsu Tetsutetsu, and due to their similar Quirks and fighting styles, the two were evenly matched during their battle at the U.A. Sports Festival, which resulted in a draw. The two hard-headed students were still on par with each other during their arm wrestling tie-breaker, until Tetsutetsu's Quirk began to weaken due to insufficient iron intake. Another testament of Eijiro's prowess is when he was able to force Katsuki Bakugo, one of the strongest students in Class 1-A, on the defensive during their battle at the U.A. Sports Festival for some time, before Eijiro's Quirk began to weaken, causing him to lose the battle. During the Joint Training, Jurota Shishida, one of the strongest students of Class 1-B, knew that the only person, during their battle, that can pose a threat to his abilities was Eijiro, so he swiped the Sturdy Hero aside to be captured by Ibara Shiozaki.

  • Enhanced Durability: Even without his Quirk, Eijiro has above-average durability. According to Katsuki, even though Eijiro took a barrage of point-blank explosions with his Quirk, this was not due to Eijiro's armored skin alone. This statement proves that Eijiro's natural durability is fairly strong, but was amplified by his Hardening.


Hardening ( (こう) () Kōka?): Eijiro's Quirk gives him the power to harden and sharpen any part of his body. Eijiro also becomes stronger to an extent. The drawback of his Quirk is that there is a limit to how much damage the hardened skin can withstand, which causes the hardening itself to slowly dissipate, and Eijiro to lose stamina from struggling to keep his Quirk active.[5] As part of his training, Eijiro, in his hardened form was continuously attacked by Mashirao Ojiro's Tail, and with each hit, the strength and durability of Eijiro's Quirk increased.

  • Enhanced Strength: While using his Quirk, Eijiro's physical strength appears to increase. He demonstrated it multiple times during the Sports Festival, first digging through several tons of metal scraps. In his arm-wrestling match against Tetsutetsu, his fingers dug through the concrete podium on which the match took place, and he eventually broke the surface. Eijiro was also able to break multiple metal blades with a single elbow strike, as well as to destroy a wall with Izuku's help. When heavily wounded, a punch from Eijiro is regarded as powerful enough to cause Hekiji Tengai, one of the Eight Expendables, to block the said attack with a barrier.
  • Enhanced Durability: Eijiro has enhanced durability thanks to his Quirk. His Hardening was able to withstand Katsuki's point-blank explosions, without stumbling, for an extended amount of time before his Hardening weakened entirely. Remnants of the huge Villain Bots fell on top of him, and Eijiro's Quirk allowed him to emerge completely unscathed. He was also able to take the punches of Kendo Rappa, which were strong enough to inflict painful injuries on Fat Gum, a Pro Hero who excels in defense, for a significant amount of time and even remain standing long enough to throw a final punch, though he lost consciousness almost immediately after.
    • Heat Resistance: Eijiro's hardened skin also grants him a resistance to heat.
    • Shockwave Resistance: Eijiro's hardened skin also grants him a resistance to shockwaves.

Super Moves

  • Red Counter (烈怒交吽咤 (レッドカウンター) Reddo Kauntā?): While hardened, Eijiro endures a close-range attack with his skin and then counters with a straight punch.[6]
  • Red Riot Unbreakable (烈怒頼雄斗 (レッドライオット) 安無嶺過武瑠 (アンブレイカブル) Reddo Raiotto Anbureikaburu?): Eijiro reaches his maximum hardening level by turning his entire body extremely hard and rugged, leaving him with a monstrous appearance and practically invulnerable to most forms of attack. This form can only be maintained for around 30 to 40 seconds.[7]
  • Red Gauntlet (烈怒頑斗裂屠 (レッドガントレット) Reddo Gantoretto?) Eijiro rushes towards the enemy and delivers a single strong punch against them.[8]


4/5 B
3/5 C
3/5 C
3/5 C
4/5 B
Eijiro's stats, according to the Ultra Archive Book

5/6 A-
3/6 C-
2/6 D
3/6 C
6/6 S
Eijiro's stats, according to the Ultra Analysis Book

Battles & Events

Battles & Events

Quirk Apprehension Test Arc

Battle Trial Arc

U.S.J. Arc

U.A. Sports Festival Arc

Vs. Hero Killer Arc

Final Exams Arc

My Hero Academia: Two Heroes

Forest Training Camp Arc

Provisional Hero License Exam Arc

Shie Hassaikai Arc

U.A. School Festival Arc

Joint Training Arc

Endeavor Agency Arc


Prototype Eijiro

Early concept art for Eijiro.

  • In the preliminary stages of the manga, Eijiro's early design was very similar to his current appearance, aside from a few rough features.
  • Eijiro's name contains the kanji for cut (?) and sharp (?).
  • According to Eijiro's profile in Volume 3:
    • His favorite food is meat.
    • His favorite thing is manliness.
    • His role is to tie Class 1-A together with his personality, just like Denki Kaminari.
    • The story behind his Quirk's first manifestation is detailed via text. The Shie Hassaikai Arc would later show a small glimpse of this event.
  • Eijiro's known U.A. data is as follows:
  • Eijiro's rankings in the Popularity Polls are as follows:
  • While Eijiro officially debuted in Chapter 5, he actually makes a small cameo in Chapter 3, sporting his original middle school appearance and fighting some Villain Bots.
  • Eijiro and Tetsutetsu Tetsutetsu share many (mostly intentional) similarities with each other
    • They share the same birthday (October 16).
    • They both chose Fourth Kind's office for workplace experience.
    • They share the same stats in the Official Character Book, prior to the release of the Ultra Analysis Book.
    • Their Quirks, Steel and Hardening, are functionally similar and described likewise, including the weakness of losing power in a drawn out battle, as well as turning their bodies into an earth-based element.
    • Both have prominently pointed teeth.
    • Both have similar hero costumes.
    • Both have a Super Move that involves further hardening their fists to break through the oppenent's defenses, while having the same pose when performing their Super Move.
    • In the anime, their U.A. Sports Festival entry poses were the exact same.
    • The beginning of their Hero names start with the letter "R".
    • Both use their Quirks to turn themselves into human shields to protect their allies.
    • Their fighting styles are the same: straightforward and reckless, letting their hardened bodies take opposing hits while delivering counterattacks.
    • Both wanted to stand out during the U.A. Sports Festival, but were disappointed that they couldn’t, upon realizing their similarities to each other.
    • Them and their Quirks were formally introduced in quick succession, while in identical situations: emerging from the wreckage of Villain Bots.


  • (To his classmates about Katsuki Bakugo's kidnapping) "When I heard that they were after my buddy...I couldn't do anything!! I didn't do anything!! If I don't act now...forget being a hero, I'm not even a man!"[10]


  1. My Hero Academia Manga: Chapter 13 (p. 11).
  2. My Hero Academia Manga: Chapter 133 (p. 16).
  3. My Hero Academia Manga: Chapter 144 (p. 4-5).
  4. My Hero Academia Manga: Chapter 144 (p. 5).
  5. My Hero Academia Manga and Anime: Chapter 41 and Episode 24.
  6. My Hero Academia Manga: Chapter 133 (p. 5).
  7. My Hero Academia Manga: Chapter 133 (p. 19).
  8. My Hero Academia Manga: Chapter 134 (p. 4).
  9. My Hero Academia Manga: Chapter 60.
  10. My Hero Academia Manga: Chapter 83 (p. 18).

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