Toshinori Yagi, known globally asAll Might, is the former No. 1 Pro Hero and the Symbol of Peace (平和の象徴 Heiwa no Shōchō). Revered for his unmatched strength and bravery, All Might was pivotal in maintaining peace in society during his tenure as the world’s greatest hero. Currently, he serves as a teacher atU.A. High School, where he instructsFoundational Hero Studies, focusing on shaping the next generation of heroes.

All Might is theeighthwielder of theOne For AllQuirk, a unique power passed down through generations of heroes. He inherited it from his mentor,Nana Shimura, and utilized it to maintain justice across the globe, defeating numerous powerful villains, including his archnemesis,All For One.

Despite his retirement from active hero duty, All Might’s legacy continues to inspire heroes and civilians alike.

In his later years, after his battle withAll For One, Toshinori began wearing baggy clothing to accommodate the drastic difference between his true, weakened form and his muscular hero transformation. During theFinal War, he donned theArmored All Might, a high-tech mechanical suit resembling his original costume, but more functional and defensive. The suit, equipped with robotic parts, was eventually destroyed in battle, leaving him bound to a wheelchair while he recovered from his injuries.

Golden Age Hero Costume: All Might’s original hero costume was a skin-tight blue bodysuit featuring a red “Y” symbol with white accents that traced across his chest and back. The suit had gold forearm sleeves with spiked fins, shin-length gold boots trimmed with white and red accents, and a gold belt with a silver buckle. This design highlighted All Might’s larger-than-life persona, emphasizing his muscular and heroic stature.

Post-Injury Clothing: After sustaining life-threatening injuries in his battle with All For One, Toshinori adopted a baggy clothing style to account for the drastic change between his emaciated true form and his muscular hero form. After his retirement, Toshinori began wearing clothes that fit his regular form more appropriately, no longer needing oversized outfits for his transformation.

Armored All Might: During the Final War, Toshinori donned a mechanical suit of armor called theArmored All Might. The suit was modeled after his original hero costume and consisted of several detachable robotic pieces that provided enhanced protection. This armor covered his entire body, except for his mouth, allowing him to maintain his iconic smile while in battle. The suit was eventually destroyed in his final confrontation, leaving him severely injured and wheelchair-bound.

After the final war, Toshinori Yagi, formerly All Might, underwent significant changes due to his injuries and the passage of time:

• Physical Condition: All Might’s body was left severely damaged after his final confrontation with All For One. His legs were crushed, confining him to a wheelchair while he recovered from his injuries. However, eight years after the war, Toshinori regained his ability to walk, though he showed visible signs of aging with more wrinkles around his face.

• Eyes and Appearance: Following the battle, All Might’s eyes, which had previously turned dark due to his injuries, regained their natural white sclerae, similar to his youthful appearance. His iconic smile and bushy eyebrows also returned, symbolizing his enduring spirit despite his weakened condition.

• Armored Suit: During the final confrontation with All For One, All Might wore a mechanical suit known asArmored All Might, designed to resemble his original hero costume. The suit provided enhanced protection, but was ultimately destroyed during the battle, leaving him heavily injured and marking the end of his hero activities.

All Might’s personality is a blend of exuberant heroism and deep selflessness. As a Pro Hero, he embodies the stereotypical superhero with an infectious smile and dramatic flair, always aiming to save lives while inspiring hope. His mentor, Nana Shimura, ingrained in him the importance of smiling in the face of danger, which became his trademark as he rose to become the Symbol of Peace. Despite his fame, All Might remains humble, interacting with fans and citizens with warmth and kindness. His heroic persona is optimistic and larger-than-life, but it serves as a mask to hide his vulnerabilities and fears, especially after sustaining life-threatening injuries from his battle with All For One.

In contrast, his true form reveals a more reserved, solemn side. When he’s not in his empowered state, Toshinori Yagi is physically frail and tends to avoid attention, yet he remains a pillar of wisdom and guidance for his students, especially Izuku Midoriya. All Might has a deep sense of responsibility, often prioritizing others’ safety over his own well-being, which eventually takes a toll on his health and personal life. His selflessness and strong desire to mentor the next generation of heroes, particularly Izuku, drive him to push his limits both as a hero and a teacher, even when faced with his declining strength and the inevitable passing of the hero torch.

Despite his struggles with self-doubt and the pressure of maintaining his symbolic status, All Might’s fatherly care for his students remains unwavering. His mentorship style balances tough love and encouragement, always aiming to bring out the best in his students, even if it means pushing them to their limits. Through his trials and eventual retirement, All Might continues to be a beacon of hope and an enduring inspiration to those around him.

As the former No. 1 hero and Symbol of Peace, All Might was renowned as the strongest hero in the world, maintaining peace and stability across Japan through his immense power. His Quirk,One For All, granted him unmatched strength, speed, and durability, allowing him to defeat the world’s most powerful villain, All For One, twice. Despite suffering a severe injury that limited his power, All Might continued to fight with remarkable skill and determination. Even after passingOne For Allto Izuku Midoriya, All Might remained capable of immense feats, showcasing his strength and abilities in his final battle against All For One, using up the last embers of his Quirk.

All Might’s strength of will is one of his defining characteristics. His unwavering resolve to be the Symbol of Peace, coupled with his refusal to give in to despair, allowed him to push beyond his limits time and again. This is especially evident during his final battles with All For One, where he drew on his inner strength to overcome psychological attacks and physical exhaustion, ultimately securing victory despite his diminishing power. All Might’s presence alone inspired confidence in civilians and terror in villains, making him a true beacon of hope.

Though initially inexperienced, All Might developed into a capable mentor, particularly for Izuku. He designed effective training regimens, such as helping Izuku build the physical strength required to inheritOne For All. His practical approach to hero training emphasized teamwork and real-world challenges, preparing Class 1-A students for the realities of hero work. After his retirement, All Might continued to refine his teaching skills, offering valuable guidance and insights to help his students grow as heroes.

One For All (ワン・フォー・オール Wan Fō Ōru?): This Quirk, transferred to All Might from his mentor Nana Shimura, allowed Toshinori Yagi to store an immense amount of power, enhancing all of his physical abilities to superhuman levels. It granted him extraordinary strength, speed, agility, and durability, making him the most powerful hero in the world. All Might was unique among One For All users in his near-instant mastery of the Quirk, and his ability to transform into a towering, muscular form, which helped him maintain a secret identity. Even after suffering a debilitating injury and transferring the Quirk to Izuku Midoriya, All Might remained capable of incredible feats using the residual power of One For All.

Although he no longer possessesOne For All, Toshinori still retains a psychic link to the Quirk. His consciousness was imprinted in the vestige world ofOne For All, allowing him to provide guidance and share information with the other vestiges and Izuku. This connection mirrors the way All For One communicates with Tomura Shigaraki.

In his prime, All Might’s strength was unmatched. His punches could not only defeat powerful villains but also create shockwaves strong enough to change the weather and destroy city blocks. Even in his weakened state, he demonstrated strength comparable to a nuclear bomb, as seen when he defeated the Nomu at U.S.J. Despite his injuries, All Might could still move at incredible speeds, covering vast distances in seconds and incapacitating enemies in the blink of an eye. His power was significantly reduced after his injury, but even then, his capabilities were far beyond those of any other hero.

All Might’s durability was nearly unparalleled. He could take powerful attacks, such as Katsuki’s full-power explosions and All For One’s enhanced Air Cannon, without sustaining significant damage. In his prime, All Might displayed almost endless stamina, able to engage in hero work for over 72 consecutive hours without showing signs of fatigue. Even after his injury, he remained capable of enduring long battles against powerful foes, though at a cost to his body due to the reduced time he could use his muscle form.

• Detroit Smash:
  All Might delivers a powerful punch downward, generating a shockwave that can alter the weather. This iconic move was first used to save Izuku Midoriya and Katsuki Bakugo from the Sludge Villain.

• California Smash:
  A frontal somersault attack where All Might builds momentum in mid-air, releasing a crushing punch with great force. This move maximizes both his speed and power.

• Carolina Smash:
  All Might crosses his arms while charging toward the enemy, releasing a downward chop aimed at the head. Though intercepted by Nomu during his fight with Tomura Shigaraki, it demonstrates his versatility in close combat.

• Double Detroit Smash:
  A combined effort with Izuku, both using One For All at full power. Together, they unleash an attack stronger than either could perform individually, first used to defeat Wolfram.

• Missouri Smash:
  All Might strikes the enemy’s head while dashing past them with an open palm. This rapid, direct move is designed for swift incapacitation and was used against Habit Headgear.

• Nebraska Smash:
  A twisting punch that creates a tornado, capable of taking out multiple targets at once. All Might employed this move to destroy a swarm of Mini-Bombers.

• New Hampshire Smash:
  A maneuver where All Might punches the air to propel himself backward, crushing his enemy with his full body weight. This technique was first seen when he launched himself at Izuku.

• Oklahoma Smash:
  All Might spins violently while enemies latch onto him, flinging them away with such force that they break through concrete. This move was used during the Kamino Ward Incident.

• Texas Smash:
  All Might creates intense wind pressure with a straight punch, knocking back objects and enemies alike. This move was pivotal in saving Izuku from the Sludge Villain.

• United States of Smash:
  All Might’s ultimate and final move, a punch so powerful it creates shockwaves, leaving massive craters and causing nearby buildings to collapse. This move marked the end of his battle with All For One and his hero career.

• Shoot Style Smash:
  Inspired by Izuku’s technique, All Might delivers a powerful kick using his Armored All Might support item. This move highlights his adaptability, even in retirement.

• Costume Zeta(コスチュームZゼータ,Kosuchūmu Zēta): The sixth version of Izuku’s hero costume, introduced after his previous outfit was severely damaged. This version retains the essential features of earlier iterations, including improved arm bracers and iron soles. Notably, the hood is removed, replaced by Gran Torino’s cape, which he now wears as a scarf. The mask, though damaged, remains part of the ensemble.

• Iron Soles(アイアンソール,Aiansōru): These are special soles designed by Mei Hatsume to enhance Izuku’s kicking power. They absorb the impact of his kicks and redistribute the kinetic energy, amplifying the strength of each strike. Izuku requested these as part of his transition to a kick-focused fighting style.

• Air Force Gloves: Designed by Mei, these gloves allow Izuku to channel pressurized air blasts by flicking his fingers, enabling him to perform long-range attacks with One For All. After being destroyed in the fight against Tomura Shigaraki, Izuku later receives an upgraded version from Mei.

• Mid-Gauntlet(ミッドガントレット,Middo Gantoretto): Created after the Paranormal Liberation War, this device allows Izuku to safely use higher percentages of One For All without damaging his body. The gauntlet can handle significant power output, but breaks under 100% usage. It was partially destroyed in the battle with Lady Nagant but was later replaced with new replicas.

• Full Gauntlet(フルガントレット,Furu Gantoretto): Originally created by Melissa Shield, the Full Gauntlet was designed to help Izuku safely utilize One For All’s power at higher percentages without self-injury. It was destroyed during the fight against Wolfram at the I-Island Expo.

• “It’s fine now. Why? Because I am here!”
  This iconic line showcases All Might’s role as the symbol of peace, always arriving to save the day with confidence and reassurance.

• “I smile to show the pressure of heroes and to trick the fear inside of me.”
  A reflection of All Might’s philosophy, showing that even heroes face fear but must mask it with bravery and positivity.

• “I cannot simply say ‘you can become a hero even without power’.”
  All Might expresses the harsh truth that without power, heroism is a difficult pursuit, highlighting the importance of strength in his world.

• “I really am pathetic. Even though I admonished you, I wasn’t putting what I said into practice! Pros are always risking their lives!”
  A moment of self-realization and humility, where All Might admits his own shortcomings as he strives to live up to the ideals of a professional hero.

• “You can become a hero!”
  These words inspire Izuku Midoriya, giving him the hope and motivation to pursue his dream of becoming a hero despite his initial lack of power.

• “You’re next.”
  A powerful declaration, passing the torch of responsibility to Izuku, signifying the shift in the legacy of One For All.

• “Now, it’s your turn.”
  Reinforcing his role as a mentor, All Might entrusts the future of heroism to the next generation, namely Izuku.

• (To All For One):
  “You must remember the endless warring that got us here… and now I hear that Tomura Shigaraki’s hatred is even affecting your original body… so I’m thinking… you won’t be able to ignore me. Isn’t that right? I… am here.”
  A powerful statement in the face of his arch-nemesis, reminding All For One of their long-standing conflict while asserting his enduring presence as a hero.

• (To Naomasa):
  “We’ve known each other long enough that you should realize something, my dear friend!! Not once… in my entire life… have I gone into battle expecting to lose!!”
  This quote highlights All Might’s unshakable resolve and confidence in every battle he faces.