|Table of Contents|
|Inko Midoriya • Toshinori Yagi • Katsuki Bakugo • Ochaco Uraraka • Tenya Iida • Shoto Todoroki • Shota Aizawa • Gran Torino • Chiyo Shuuzenji • Kouta Izumi • Chizome Akaguro • Tomura Shigaraki • Himiko Toga • Mirio Togata • Sir Nighteye • Eri • Mei Hatsume • Yuga Aoyama • Tsuyu Asui • Minoru Mineta • Fumikage Tokoyami • Hitoshi Shinso • Eijiro Kirishima|
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Inko is Izuku's mother, and she cares deeply for Izuku, even when her son was initially Quirkless; she apologized profusely as if it were her fault. It is hinted she took her sadness on herself and gained more weight but this is unknown.
However, once he developed a quirk and got into his dream school, she felt guilty about her former beliefs and after she saw it in a drawing she even made a costume for him herself. She brought up her past beliefs and apologized for not believing he could be a hero, she soon told him that she would support him all the way, to his happiness.
She later showed that she was worried about the consequences of her son's new Quirk after seeing the damage done to his body. Indeed, after the ordeal at the training camp, Inko was completely against him resuming his studies at U.A. due to their inability to properly protect her son. Only after Izuku showed Kota's letter as a sign he was becoming a hero and All Might convincing her, did she relent in her decision, but she made Izuku promise to not hurt himself any more to which he did.
While upgrading his costume, Izuku only added a few things on it and refused to modify it even further as he was attached to it because he recalled his mother had made it for him.
Izuku has always admired All Might ever since he was a small child and wanted to be a hero just like him. In their first meeting All Might saved Izuku from Sludge Villain and signed a happy Izuku's notebook. However, Izuku was very shocked to see All Might's true form and was dismayed when the latter told him being powerless wouldn't help him be a hero. However, Izuku earned All Might's respect after he ran toward the slime monster trying to save Katsuki, a mentor-student relationship bloomed between them and All Might chose him as his successor. While All Might's training on Izuku was rough, the latter continued to give it his all. They grew closer as All Might listened to his resolve of training and doing more than he has to become a great hero, impressing the hero.
All Might is Izuku's confidante, mentor, friend in and out of school, and they share a mutual respect for each other's heroism ideals. Izuku's admiration and respect for All Might is so great that he avoided trying to attack All Might during the End of Term Test, but when he had no choice but to attack All Might with Katsuki's Grenade Bracer, Izuku apologized.
At first, Izuku was an extreme fanatic who tried to imitate All Might from his style of name and costume design. As he matured later on, Izuku slowly learned to become his own hero and develop his own style. This change was noticed by All Might who was proud to see Izuku on his way of becoming his own hero.
Izuku and Katsuki have known each other since their childhood, but their relationship has deteriorated over the years (though interestingly enough, Izuku continues to call Katsuki by his childhood nickname, "Kacchan"). Ever since failing to develop a Quirk as a child, while Katsuki developed his, the latter has seen Izuku as weak and bullied him relentlessly, giving him the derogatory nickname “Deku,” and even going so far as to use him as suicide bait. It can be assumed that it is largely because of Katsuki's abuse that Izuku has such a skittish nature, stutter, and initially low self-confidence.
Izuku later surprised Katsuki by trying to save him from the Sludge Villain. Much later, Katsuki caught up with him and berated him for his actions, calling him a Quirkless failure most likely out of pride. Izuku's heroic act is also what caused All Might to choose him as his successor of One For All, thus making Katsuki indirectly responsible for his acceptance into U.A.
Izuku later stood up to Katsuki and enrolled in U.A. High School. He also revealed his new quirk, with Katsuki reacting in surprise as the latter angrily questioned if Izuku was intentionally hiding his powers from him for years. In a training battle, Katsuki attacked Izuku but once again Izuku surprised Katsuki by revealing he has been memorizing his moves and knew of ways to counter them as he once possessed a strategy book that detailed all of Katsuki and other's moves before Katsuki had burned it. Finally standing his ground against Katsuki, Izuku tells him that he is no longer the same kid Katsuki used to bully even stating he will use the nickname Katsuki gave him as inspiration. Enraged by Izuku's bold claims, Katsuki attacked relentlessly to get him to use his quirk which worked but ended with Izuku defeating him for once. After the exercise, Izuku caught up to Katsuki and told him he obtained his powers from someone else but Katsuki does not believe it and swore to defeat him.
Izuku states that Katsuki makes all of Izuku's insecurities about himself bubble to the surface. Despite the two having such a strained relationship, Izuku still admires him for his strong quirk, natural combat capabilities, confidence, and his ability to win. Ever since the end of the Battle Trial Arc, Izuku has not spoken to Katsuki on friendly terms due to Katsuki considering Izuku his arch-rival. Even still, Izuku still has respect for Katsuki and is still shown to care for him, as shown when Katsuki is captured by the Vanguard Action Squad, Izuku used all his strength in an attempt to save him and spiraled into despair after he failed to do so. Directly after, Izuku teams up with Tenya, Ejirou, Shoto, and Momo in an attempt to rescue Katsuki from the League of Villains' hideout.
Back at U.A. sometime later, Katsuki remarked to Izuku was really making his power his, revealing he believed Izuku's story of borrowed quirk. Later on, Katsuki and Izuku take out their stress on each other in an emotional fight, which Katsuki wins. After the fight, Katsuki learned the full truth of Izuku's quirk and his connection to All Might which he seems to understand and kept the secret to himself.
Since the fight, the two better understand each other and have become more reminiscent to that of a proper "friendly" rivalry, though they are still at odds due to their clashing personalities and overall shaky history with each other.
Ochaco was the first person Izuku interacted with when he first came to U.A. High. The two are best friends; they get along very well and their discussions are always bright and friendly. Ochaco was the one that turned his once demeaning nickname "Deku" into a positive identity for him, when she said it gave her a "never gives up“ vibe. They share similar ways of quick thinking, which contributes to their friendship.
They mutually respect each other as Izuku defended her to Katsuki Bakugo and Camie, thinking of her as a brave and resourceful person. Ochaco is inspired by him, striving for his level of tenacity and perseverance.
It is hinted that they may have feelings for each other due to their time together, but it is not confirmed.
In their first meeting, Tenya labeled Izuku's muttering about heroes as a distraction and thought he would be a hindrance to the school which earned Izuku bad attention from his peers. However, in the entrance tests, Izuku surprised Tenya by selflessly going back to save Ochaco Uraraka and using his Quirk to destroy a giant robot in the process.
When they met again in class, Izuku first thought that Tenya was scary and that they wouldn't get along, but was surprised as the latter apologized for his previous treatment to him and even considered Izuku better than him in many ways after the entrance course, much to Izuku's shock. Izuku got to know Tenya better, where he found out that while the latter was serious he was also kind and they ended up becoming friends. Izuku and Tenya are usually friendly with each other. However, sometimes their friendship slightly falters such as when Izuku criticized Tenya for seeking revenge against Stain and Tenya punching Izuku in the face for acting recklessly by attempting to save Katsuki.
Despite this, Izuku and Tenya's friendship has rebounded back many times despite these mishaps, mainly because they are only concerned for each other's well being. They are usually seen together having friendly discussions. Izuku resigned as Class President and named Tenya as his successor, knowing that he has better leadership qualities than him. After Tenya was defeated by Shoto, Izuku was saddened to see his friend lose. Since Izuku knew that Tenya has a grudge against Stain, he tries to save him from his death. While recuperating at Hosu General Hospital, both Izuku and Tenya resolve to become stronger together.
Shoto saw Izuku as his arch-rival due to him having connections with All Might (a person with whom his father has a major rivalry). Izuku, on the other hand, has a lot of respect for Shoto, admitting that he is a far stronger than him. After hearing Shoto's tragic backstory and seeing his sadness, Izuku started to show sympathy for his pain and resolved to help him overcome his dark past by getting him to use his power, telling Shoto that the power is his own and not his father‘s. Although Izuku lost to Shoto while trying to help him, Izuku's actions did have an impact, as Shoto stopped rejecting his power.
Shoto even came to his aid when Izuku and Tenya Iida were attacked by Stain and they worked well together even defeating the infamous hero killer. After the battle, Izuku and Shoto are on friendly terms with each other, with Izuku even laughing at Shoto's expense when he worried that he tends to hurt people's hands.
Shota is Izuku's homeroom teacher. Initially, Izuku did not recognize him until he used his quirk to restrain him, which caused Izuku to remember he was Eraserhead a hero that he respected. Shota firmly did not believe Izuku could be a hero, due to his reckless behavior when using his Quirk as it he would be useless in battle if he kept getting injured. However, Izuku proved to Shota that he has potential and did not expel him. Throughout the series, their relationship can be defined as a rocky, troublesome student-teacher relationship. As his teacher, Izuku listens to Shota's orders and advise in order to improve himself. He has some level of respect towards Shota, but Shota's cold and logical personality conflicts with Izuku's personality and mindset, making it difficult for the two to get along. Out of all his students (besides Katsuki), Shota appears to antagonize Izuku the most whenever he does something that upsets him, a recurring problem being Izuku overusing his Quirk and breaking his body. As such, Shota refers Izuku as the 'Problem Child'.
However, Shota is still Izuku's teacher and as such, ultimately cares for him. He would offer some level of consolidation and guidance for Izuku when he is upset, and he will make sure Izuku does not do anything dangerous and act upon it. In return, Izuku once tried to help Shota when he was about to be overpowered by several members of the League of Villains and expressed concern when he was violently defeated by Nomu. This shows the more caring and inspirational side of Shota helps Izuku get along better with him.
It is possible another reason they do not get along well is because of Izuku's personality and mindset bearing similarity to All Might's, who Izuku looks up to. Shota and All Might do not get along, and this is extremely evident in Shota and Izuku’s relationship.
Gran Torino requested Izuku to be his sidekick in an internship so that he can properly teach Izuku about the One for All Quirk. Gran Torino and Izuku were off to a bad start when they first met, with Gran Torino putting up a facade of being senile and Izuku being disappointed with having to train with someone who was no longer functional. However, when Izuku moved to Gran Torino promptly dropped his facade and showed Izuku what he was capable of as Izuku was amazed by his capabilities. He started to gain respect for Gran Torino, politely calling the elderly Hero Mr. Torino. They bonded to an extent and Torino's teaching helped Izuku gain better control of his quirk without hurting himself. Torino also protected Izuku from a Nomu while Izuku was worried for him.
Gran Torino has shown to be impressed with Izuku, stating that All Might chose a fine successor, due to Izuku's quick thinking and potential.
Recovery Girl is one of the few people who know about Izuku's Quirk. Often, she scolds Izuku for using his Quirk dangerously, as he consistently requires her healing quirk.
Stain respects Izuku's reasoning to be a Hero and sees worth in letting Izuku live. Izuku, on the other hand, saved Tenya from Stain after intervening in the man's attempt to kill his friend. Izuku impressed Stain with his will to defend his friend and efforts to defeat him, which was something he deemed worthy as a hero. With the help of Tenya and Shoto Todoroki, Izuku managed to defeat the villain.
Also, when Izuku was captured by one of the Noumu-like creatures, Stain was the one who saved him as the latter expressed shock at this act and was scared at Stain's speech before he fell unconscious. While Izuku does not approve of Stain's nihilistic methods, Izuku respects Stain for living according to his ideals and never giving up on achieving his ideal world.
Izuku and Tomura mutually despise each other; Tomura despises Izuku for his admiration of All Might (someone he hates) while Izuku doesn't agree with Tomura's villainous actions. During USJ, Izuku saved All Might, which caused Tomura to take an interest in Izuku as shown when he watched Izuku's match during U.A.'s Sports Festival.
Later in Kiyashi Ward Shopping Mall (Wookiees), they unintentionally met each other again, so Tomura decided to talk with Izuku about the difference between him and Stain. After hearing Izuku's thoughts on the matter and before leaving the shopping mall, Tomura declared that the next time they met, he would show Izuku no mercy.
Himiko first encounters Izuku when the Vanguard Action Squad attacks Classes 1-A and 1-B's field training. Himiko jumps him and briefly introduces herself before she is pushed away by Mezo Shoji. Unbeknownst to Izuku, the two meet again during the Hero License Exam where Izuku believes her to be Camie, a student from Shiketsu High School. This encounter only raises Himiko's interest in the boy, as she notes that their interest in each other seemed to be mutual. Izuku is surprised by her fighting abilities but finds her to be a somewhat scary person the more she interacts with him.
Being saved and carried to safety in a princess carry by her love interest, Himiko found out that the boy would save somebody even if that person was his opponent. Revealing her quirk to him but not her real identity, she was curious about how far his good will reached. During the Second Exam of the Provisional Hero License Exam begun, Izuku acknowledged her wishing of good luck to him.
After the License Exam, Izuku wanted to talk to her again about her stealth techniques but he was disappointed when he found out she had already left.
During Eri's rescue operation, he ran across her yet again when a disguised Himiko lovingly tried to cut him with her knife. Her quirk was deactivated by Aizawa and her identity revealed giving Izuku a shock as he was saved by his teacher. Putting two and two together, Izuku figured out that Himiko was likely the same girl that he had sparred with during the license exam.
At first, Izuku was largely put off by Mirio, due to the unusual nature of their first encounter. Furthermore, Izuku was skeptical of Mirio's status as one of the "Big Three" at U.A., due to Mirio's subpar performance in the sports festival the previous year. This changed after Mirio gave an excellent demonstration and explanation of his quirk and fighting technique, after which Izuku grew to have a great amount of admiration for him, even commenting that Mirio talks just like a Pro Hero already. Izuku's respect grew upon learning that Mirio was one of the originally proposed candidates for inheriting One For All. Though sometimes still a bit off-put by Mirio's intense amiability and enthusiasm, Izuku and Mirio get along very well and are very similar in terms of heroic ideals. Mirio put in a good word about Izuku with Sir Nighteye, and the two have been working together in an internship since.
He was visibly disturbed when he learned that Mirio's Quirk was forever lost from Chisaki, and expressed anger towards Chisaki for that.
After Nighteye's death, when Izuku saw how optimistic Mirio was, Izuku went as far as to propose that Mirio could take Izuku's Quirk, indicating how Izuku believes that Mirio is truly the worthier candidate for One for All, like Nighteye had said.
Izuku was very intimidated by Sir Nighteye. The two are mostly at odds due to Sir's cold nature and skepticism of Izuku being the next Symbol of Peace. However, they are both huge fans of All Might, with both having extensive knowledge of him as well as extensive collections of merchandise. Sir hired Izuku as an intern, and Izuku has been working since then to prove his worth to him.
After learning more about All Might's relationship with Nighteye, Izuku wanted to make the two meet so they can reconcile. Though Izuku wasn't able to find the time to bring it up due to the rescue mission for Eri, he got to tell him after the recuse was complete and Nighteye was taken to the hospital.
Izuku was horrified when he learned that Nighteye was going to die, and pleaded to him to keep hanging on, and cried for him as he died but not before Nighteye gave Izuku his blessing as All Might's successor.
Despite how Nighteye praised Izuku for being able to change the future, giving him hope for once, Izuku ultimately believed that Nighteye was right about Mirio being the worthier heir for One for All and even tried to pass it onto Mirio, but was rejected.
Izuku and Eri never fully interacted, but the short time they had with one another built a powerful bond between the two. When Izuku first encountered Eri, seeing the bandages she had, as well as how fearful she was towards Chisaki, he tried to protect her from Chisaki until he was forced to let her go back. After learning how Eri was being experimented on by having Quirk-erasing bullets manufactured from her body, Izuku was horrified by the act and angered at himself for letting her go back to that. Aizawa even deduced that Izuku was going to act recklessly to try and save her even if he tried to stop him, which Izuku didn't deny.
When they finally reunited in the battle against Chisaki, Izuku immediately followed orders to try and rescue Eri, and even pushed himself to use One for All 20% to protect Eri and defeat Chisaki. Even though he was beaten down by Chisaki afterwards, and Eri came back to Chisaki declaring that Izuku cannot save her, and this was not his business, Izuku declared that because Eri was crying, he would save her no matter what.
After taking Eri from Chisaki, Izuku tells Eri that he will not let go of her again. When he experiences her Quirk being used, and being told how dangerous it is to be with Eri, Izuku still refuses to let Eri go, explaining that because of how her Quirk has reverted the damage he has done to himself using 100% before he could even feel pain, he states that Eri possesses a "kind, gentle Quirk", something that drives Eri to tears. This also makes Izuku go as far to use One For All: Full Cowl - 100%, something that would destroy his entire body at blinding speed, to make use of Eri's Quirk, and asks her to lend him her strength.
After the battle is over and they are in the hospital, despite Izuku being discharged, he wants to stay by Eri's side until she wakes up, but is convinced by Shota to go back.
Mei and Izuku first met during the U.A. Sports Festival. Mei took a quick interest in Izuku when he got first place in the Obstacle course and as a result, got the ten million point headband. She saw this as an opportunity to bring attention to her inventions by using Izuku and approached him before the Human Calvary Battle. In return for joining his team, she offered him and the other teammates support equipment to aid for their battle.
After the U.A. Tournament, the two would not meet again until Izuku wanted Power Loader's help in improving and redesigning his costume. Mei recognized him during their second encounter, but does not remember his name and dismissed it in order to go back to her inventions only to return her attention back to him when he brought up his purpose for entering the workshop. She provided Izuku some options for improvements on his costume and created Izuku's Costume Gamma.
Overall, the two generally get along well. Izuku has no problem talking with Mei during their first encounter. They got acquainted over a jetpack Mei created that was similar to a hero Izuku was familiar with.
The two met again and Mei recognized Izuku but forgot his name though she remained kind to him even more so after he complimented one of her inventions. Izuku also appears to tolerate Mei more than some of his classmates like Iida and Ochaco since he shares some similarities to her as he creates ways to counter the quirks of others and rambles as she does about gadgets.
It is shown while still having trouble training, he goes to see her for gadget that might help him progress. She has gotten use to him as she remembers his name.
The two first met at the entrance exams where Aoyama saved Izuku from being attacked by a robot though he did this for points as he remarked that the latter made good bait and he would most likely not see him again. Izuku later excelled in the exams and became classmates with Aoyama. It was shown his opinion hadn't changed as he remarked on Izuku's lack of skill to Ochaco. However, Izuku surprised him with his powerful quirk which allowed him to remain in the school.
After this, the two had no further interaction that was notable until the Remedial Course Arc. Aoyama would act strangely around Izuku who would note that he could never get a good read off the latter. Izuku is later scared when Aoyama spies on him as he slept and left a message (in cheese) to say he knows Izuku's secret, which left Izuku wondering if Aoyama is aware of his secret. In training, Izuku is called out to by Aoyama and is shown one of his new moves though it causes him severe stomach problems. Seeing him in this state, Izuku took Aoyama away to recuperate before he asks him what he meant in his message. Aoyama explained that he is aware of Izuku not being accustomed to his quirk and reveals that he went through a similar experience and compared his powers leaking out in his childhood out to Izuku's initial lack of control of his own quirk before they both overcame it. He then tells Izuku he is not alone in hardships as its better to face them together or they won't excel. His words relieve and cause Izuku to smile and thank him for his support before Yuga suffers from another stomach problem. After a few days, Izuku and Aoyama become good friends with some of the class noting on their frequent interaction.
Tsuyu respects Midoriya for his heroic actions, as well as his victory against Katsuki. She becomes friendly with Izuku, requesting he call her by her first name. She even noticed the similarities between Izuku and All Might's powers which worried him until she gets a vague answer.During the Unforeseen Simulation Joint Arc, she saves him from being attacked underwater and they worked together well against their enemies. In turn, Izuku also tried to save her from being attacked by Tomura Shigaraki but failed, though they were saved by Eraserhead and All Might. In Rescue Trial Arc, she was receptive of Midoriya's plan to subdue the swimming villains, showing not only respect but also trust. After Shoto defeated Izuku in the Sports Festival, Tsuyu was one of the few who went to Recovery Girl's office to see if he was fine or not.
Izuku gets along very well with Minoru, though like most of his classmates, he is put off and disgusted by Minoru’s perversions but admires his heroism and quick thinking in difficult times. In turn, Minoru has come to admire Izuku for his acts of heroism and for believing in his abilities as a hero, although he is somewhat skeptical at first of Izuku's determination. The two have become friends, particularly following their battle together against the Villain Alliance.
The two have a mutual respect towards each other. They teamed up along with Ochaco and Mei Hatsume during the Human Cavalry Battle. Fumikage respects Izuku as a leader, as he leaves him with making the decisions of their team. Izuku himself respects Fumikage's strength and the power of his Quirk, acknowledging him as one of the strongest combatants in Class 1-A. They later sat beside each other to watch the sports festival tournament. Izuku later cheered on Fumikage and Tsuyu during their Exam against Ectoplasm.
During the training camp, Izuku along with Mezo Shoji resolved to save Fumikage from his rampaging Dark Shadow in which they eventually succeeded. After Fumikage is kidnapped by Mr. Compress, Izuku chased after the villain in order to save Fumikage as well as Bakugo.
At first, Kouta despised Izuku and Class 1-A for always working so hard to better themselves against fighting villains. He even went as far as hitting Izuku in the crotch for trying to be friendly towards him, as he voiced his dislike of heroes. In spite of this, Izuku tried to get along with Kouta, due to their similar circumstances of both being "quirkless" (Izuku not originally being born with a Quirk and Kouta refusing to use his quirk). Though he had no luck due to a disagreement in their ideals. Because of his past, Kouta ignored anything that dealt with heroes and villains, and even Quirks altogether. After finding his secret hideout, Izuku tried talking to Kouta only to have him snap at him because he's never gone through what he has.
However, Izuku saved Kouta from the Muscle Augmentation villain (who also killed Kouta's parents) after realizing he was in danger. When Kouta asked why Izuku took it upon himself to save him especially by how he treated him, Izuku stated he had seen the latter was in danger and he had to save him. Izuku shielded Kouta from the Muscle Augmentation villain at all costs, even going past his limitations.
During the battle, Kouta used his Quirk out of desperation in an attempt to help Izuku. From this it is shown, Kouta gained respect for Izuku. After the battle, he tells Kouta that his parents died to protect him and says he risked his life for him because he wanted his acknowledgment as a hero. Izuku then tells Kouta to help save others just as he helped save him.
At the hospital, Izuku soon got a letter from Kouta who apologized to him for his treatment to him and thanked him for saving his life. Izuku later used the letter to show All Might and his mother that he was well on his way of being a hero after having an effect on someone.
They first met in the fighting tournament of the Sports Festival. Izuku learned much about Shinso's Quirk from Mashirao Ojiro but accidentally played in Shinso's hands though the powers of those who previously wielded One For All freed him from Shinso's control. Shinso tried to control Izuku again by claiming to be jealous of Izuku's Quirk, as it gives him combat efficiency.
On the other hand, Izuku understands Hitoshi's situation as he himself was considered unfavorable due to having no Quirk. Before their battle in the Sports, Hitoshi and Izuku were hostile to each other, but after their battle, Hitoshi seems to have gained respect for Izuku, telling him not to lose too pitifully while Izuku respects Hitoshi's goal to enter the Department of Heroics.
Izuku seems to be on good terms with Eijiro. When Shoto told Izuku that he will defeat him, Eijiro tried to stop them from any further arguing after Izuku started to talk negatively about himself, Eijiro tried to encourage him. Eijiro also told Izuku that he is envious of his Quirk.
Eijiro seems to admire Izuku's growing confidence and seems to be impressed by his quick thinking and logical reasoning. He also seems capable of understanding Izuku's feelings to some extent, understanding how he felt when he was unable to rescue Katsuki.
In the internship Arc, Eijiro and Izuku are shown to be on even better terms than previously, often interacting in friendly ways. They later worked together in saving Katsuki Bakugo from the League of Villains and were successful.