Eijiro Kirishima (
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, and 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 which are 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 dark red 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.
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, respectively. 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. Eijiro himself is determined and selfless, bravely putting the safety of others before himself. He is also a big fan of Crimson Riot, a retro hero that he takes inspiration from, including personal values and his own hero name.
Eijiro is very honest and kind-hearted, having a straightforward way of thinking and following a specific code of chivalry that motivates him to live without regret. Thanks to his respectful and encouraging attitude, he's easily capable of making friends with most people he encounters, particularly those that show as much passion and resolve as he does. Loyal and dedicated to his friends, Eijiro is willing to break laws and rules in order to help or save them, becoming regretful if he becomes unable to come for their aid. Eijiro has a strong sense of responsibility, sometimes being very hard on himself for any negative outcomes that befall him or his friends. As such, he's always thinking on how to further improve his own abilities and strengths, so as to not feel weak or burdensome to others.
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. Eijiro also has concerns about not having a good enough Quirk for hero work, worried that his skills could not compare to other hero prospects. 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. 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, but thanks to an old, recorded interview featuring his idol, Eijiro was able to get the perspective he needed to regain his composure and overcome most of his insecurities. From that point on, Eijiro started working, studying, and training diligently.
Eijiro decided to reinvent himself after being accepted into U.A. High, adopting a tough, confident, fiery persona that he considers ideal to the kind of hero he wants to be. Although Eijiro may not be as hot-blooded and competitive as Katsuki, he does not shy away from comparing himself to him, with Izuku stating that the two have managed to develop a relationship between equals. As a result, Eijiro is notably one of the few people that Katsuki holds in higher esteem.
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. As even bullets cannot pierce his skin when his Quirk is active, Eijiro is capable of turning himself into a human shield for allies or defenseless civilians.
During the U.S.J. Incident, him and Katsuki Bakugo made an attempt to take on Kurogiri before being warped away, leaving the pair to battle, and soon defeat, low-tier members of the League of Villains. 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 Steel Quirk began to weaken due to insufficient iron intake. Later on, Izuku Midoriya was impressed that Eijiro was able to force Katsuki, one of the strongest students in Class 1-A, on the defensive for some time during their match, before Eijiro's Quirk began to weaken, causing him to lose the battle.
When he first underwent Hero Work-Studies, under the tutelage of Fat Gum, Eijiro confronted a villain who had the ability to protrude metal blades from his body. Eijiro was initially taken by surprise when the blade villain used the Trigger drug to enhance his Quirk, but after bringing his Hardening to its maximum durability, the red-haired hero was able to overcome the villain's increased power and defeat him. During the first round of the Joint Training Battle, him and Koji Koda launched a collaboration attack on Jurota Shishida of Class 1-B that forced the latter into evading the said assault, implying their combined onslaught would've been effective against someone of his caliber. Jurota himself admitted that Eijiro was the only person in their battle that can pose a threat to his abilities, 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 during their fight at the U.A. Sports Festival, this was not due to Eijiro's armored skin alone. This statement proves that Eijiro's natural durability is fairly strong, but can be amplified by his Hardening Quirk.
Indomitable Will: A prominent aspect of Eijiro is his die-hard chivalry. During his middle school days, Eijiro lacked the courage to stand up for others, despite desperately wanting to, but was too afraid to do so. However, after watching a video containing Crimson Riot's speech on chivalry and his heroic ideals, Eijiro re-evaluated himself and became virile person who desires to help others no matter how scared he may be, even if it means recklessly rushing into situations. Eijiro changed his original black hair to the the spiked, red appearance he now possesses to symbolize, not only his admiration for Crimson Riot, but also his reformation into a more courageous person. Eijiro's heroic spirit remained steadfast when he voiced his intent to help save Katsuki, who had been abducted by the League of Villains, and proclaimed that he won't stand by and do nothing.
At the beginning of his and Fat Gum's battle against Kendo Rappa and Hekiji Tengai of the Eight Bullets, Eijiro was severely incapacitated by Kendo's punch and began to despair over being unable to help Fat Gum, who was being repeatedly pulverized by Kendo's powerful punches. But after recalling how he felt this very hopelessness in middle school, and overcame it with inspiration from different people, Eijiro regained his resolve to stand up for others, and be a hero. With his conviction re-established, Eijiro jumped into the fray, refortified his hardened body, allowing him to better endure Kendo's bullet punches compared to the beginning of the bout, and threw a punch that was potentially stong enough to counter, if not damage Kendo, compelling Hekiji to protect Kendo with one of his barriers. Because of Eijiro, Fat Gum was able to gather the accumulated energy from Kendo's punches and defeat the Yakuza duo. In the aftermath, Fat Gum and Kendo both acknowledged Eijiro's fighting spirit, with the latter being so impressed that he desires to one day have a rematch with the young hero.
There is a limit to how much damage his hardened body can withstand, which causes the Hardening itself to slowly dissipate, and Eijiro to lose stamina from struggling to keep his Quirk active. However, when he battled Kendo Rappa, Eijiro displayed the ability to refortifiy his hardened body.
- Enhanced Durability: Eijiro's Quirk grants him greatly enhanced durability. His hardened body has displayed the ability to withstand a great deal of punishment for extended periods of time, including:
- A number of point-blank explosions from Katsuki.
- Several tons of scrap metal from a Villain Bot - Executor falling on top of him.
- Bullets being fired at him.
- A shower of blades produced by a Villain whose blade Quirk was strengthened by the Quirk-enhancing drug, Trigger.
- A series of powerful punches from Kendo Rappa, whose Quirk increases the power of his punches, which were strong enough to inflict painful injuries on Fat Gum, a Pro Hero who excels in defense.
- Dabi's flames burning his body.
- Gigantomachia swiping him away.
- Enhanced Strength: When using his Quirk, Eijiro's physical strength is increased, enabling him to break through most obstacles. He demonstrated this heightened brawn multiple times during the Sports Festival, starting with easily digging through the remnants of Villain Bots. In his arm-wrestling match against Tetsutetsu, Eijiro's fingers dug through the concrete podium on which the match took place, and he eventually broke the surface. When fighting Cementoss, Eijiro and Rikido Sato were able to break a multitude of concrete walls before they were eventually worn out. Eijiro was also able to break multiple metal blades with a single elbow strike, as well as to destroy a concrete wall with Izuku's help. During the climax of the battle against Kendo Rappa, Eijiro threw a punch that was seen as powerful enough to force Hekiji Tengai into blocking the attack with a barrier.
- Red Counter (
烈怒交吽咤Reddo Kauntā?): While hardened, Eijiro endures a close-range attack with his skin and then counters with a straight punch.
- Red Riot Unbreakable (
烈怒頼雄斗 安無嶺過武瑠Reddo Raiotto Anbureikaburu?): Eijiro reaches his maximum hardening level by turning his entire body extremely hard and rugged, giving him a monstrous appearance, and practical invulnerablility to most forms of attacks. This form can only be maintained for around 30 to 40 seconds.
- Red Gauntlet (
烈怒頑斗裂屠Reddo Gantoretto?) Eijiro rushes towards the enemy and delivers a single strong punch to the gut against them. This technique deals massive damage if Eijiro is in his "Red Riot Unbreakable" form.