Kyoka "Earphone Jack" Jiro

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   A Quirk, formerly known as a Meta Ability, is a superhuman power that a person can possess. Along with being unique to each user, Quirks are sorted into multiple categories. Quirk users are also limited to only developing one power or set of powers and are thus unable to achieve any other through natural means.

   The earliest known instance of a human having superpowers was a prostitute who would later become the mother of the twin boys Zen and Yoichi Shigaraki. Her superpower was Spearlike Bones, but it only manifested as hardened growths on her left arm. She died during childbirth by a riverbank, her life force sucked away by the fetal older twin, without ever truly knowing about her ability. A year after her sons were born, the first superpower ever to be officially recorded was manifested by a newborn baby in Qing Qing City, China with the ability to radiate light from their body. After this phenomenon, many people around the world began to manifest different kinds of superpowers,[2] not just at birth, but also during puberty. These powers became known as "Meta Abilities". While the cause of this phenomenon is unknown, one research group looking into the matter hypothesized that it was caused by the spread of a previously unknown novel disease carried by mice, while others theorized that it was actually a natural evolution of the human race. However, to date, there is no hard evidence to support any of these theories.[3] The aforementioned research group announced to the public that those with Meta Abilities were a subbranch of humanity with new genetic factors. The dawn of this extraordinary era was marred by a breakdown of society caused by the sudden onslaught of criminals, dubbed Villains, empowered by their newfound superpowers, as well as ordinary people being prejudiced against the new minority. It suddenly became impossible to define one's self as a normal person, laws and human rights were thrown into constant debates, and the progress of civilization came to a sudden halt. The announcement by the researchers proved to be reckless and premature, as it caused division among people and chaos to grow. Meta Ability users were labelled as monsters or diseased, and as a result, Anti-Meta groups rose up with the objective of exterminating those with Meta Abilities. The Luminescent Baby took advantage of their fame as the first recorded Quirk user, attempting to rally a following that preached a return to a peaceful and stable society. They had 10 million followers at one point, but was later murdered by Zen, a powerful supervillain who would later be known worldwide as All For One, out of jealousy for all the attention and admiration they were getting. As chaos and unrest ensued due to the outbreak of Meta Abilities, ordinary civilians decided to take matters into their own hands to bring order to society, and thus the first "Heroes" appeared in the form of Vigilantes, beginning the Vigilantes Era. During this time period, All For One became a symbol of unity in society. He used his own Meta Ability to remove Meta Abilities from those who did not want them and give them to those that did. He claimed his actions were meant to help return society to its prior state, when in reality, he was gathering followers who were loyal to him, allowing him to act out his ulterior motives. At some point, a woman gave birth to a son named Chikara Yotsubashi. As Chikara grew up, he faced a lot of discrimination and abuse for having a Meta Ability. His mother supported him, stating that her son's Meta Ability is "just a quirk of his". Although at the time, her message was scorned and even led to her murder, decades later, "Quirk" became the most common term for such Meta Abilities, and she retroactively became known as The Mother of Quirks. As society adapted to the new status quo, the Police Force moved to prioritize leadership and to maintain the status quo, and as such, decided not to use Quirks as weapons. To fill that void, the profession of crime-fighting Quirk users, Pro Heroes, began to exist, starting in Rhode Island, USA, which caused the Vigilantes to slowly disappear. Authorizing the use of powers that could so easily kill, however, was a greatly criticized decision at first, but eventually became accepted as a legitimate occupation. This became known as the "Advent of the Extraordinary." With the proliferation of Quirks, the government began to regulate their use. A group of Quirk users known as the Meta Liberation Army, led by Chikara under the alias, Destro, had tried to stop the passing of regulations that would restrict Quirk usage, believing that free use of Quirks is a basic human right. They rebelled against the governments of a number of nations for several years before meeting their defeat. Chikara himself was imprisoned and wrote a biographical book, Meta Liberation War, detailing his ideals over liberating Quirks. After getting his writing published, Chikara committed suicide, but his legacy would continue over the years with members and supporters of the Meta Liberation Army operating from the shadows. Currently, roughly 80% of the people who make up the global population possess a Quirk, and that percentage continues to increase.[2] According to Yoichi, the number of individuals without a Quirk has been rapidly declining in population, indicating that now less than 20% of the world's population is Quirkless.

   Heroes are individuals who are licensed to use their Quirks to protect civilians from Villains, natural disasters, and/or any other kind of harm. Those who take heroism as a profession are referred to as Pro Heroes. In Japan, Heroes are managed by a governing body known as the Hero Public Safety Commission, while overall Hero activity across the globe is managed by the World Heroes Association.

   The Hero Public Safety Commission is a law enforcement agency responsible for managing the interactions between Heroes and society as a whole and for investigating the most dangerous cases of criminality. The Hero Public Safety Commission is headed by a committee of non-Heroes, to improve the balance of influence between Heroes and regular members of society. The Commission was, amongst other things, a criminal investigative organization and responsible for many Hero-related matters, including the Provisional Hero License Exam, which is administered on a bi-annual basis in June and September. Hero Licenses are awarded by the Commission to those who pass the licensing exam.

   Heroes generally work in groups known as Hero Agencies. The standard is one very strong Pro Hero in charge, and a number of weaker Heroes who serve as Sidekicks under the command of the primary Hero. An agency operates out of an office building which serves as their base of operations. Some Pro Heroes only have a small Hero Office, but some Heroes, mainly the more prestigious ones, operate out of massive skyscrapers. The number of Sidekicks at an agency can vary; some Heroes have only a couple of Sidekicks, while others have dozens, and some opt to work alone. Sidekicks make an effort to get hired by more prestigious Pro Heroes, whether out of admiration or to gain popularity and experience in order to eventually become full-fledged Pro Heroes themselves and open their own agencies. Though, most Sidekicks usually stay at their rank and don't continue on to become Pros.

   Heroes have three basic duties: rescue, evacuation, and battle. Some Hero Agencies choose to specialize in only one of these fields, primarily rescue or battle. However, some Agencies do all three. According to Gunhead, when a crisis occurs, the police will contact various Hero Agencies that are in the same area as the crisis. Once the chaos is settled, the Heroes will file a report about the work they did, saving people, capturing criminals, etc., and a special agency will review their work and determine how much they should be paid. However, it should be noted that even though they fight crime and help other authorities, they are not enforcement agents like the police or the army, therefore, they do not represent the law. According to Manual, Heroes are allowed by the law to use their Quirks but they don't possess any authority to arrest or punish criminals, and it's considered a serious crime if a Hero uses their Quirk for personal reasons such as revenge. While out on patrol, the agency's owner Hero will lead the patrol themselves. Sometimes they will go out on their own, other times they will have a Sidekick or two with them for backup. According to Best Jeanist, these patrols are meant to dissuade Villains from committing crimes and to show civilians that the Heroes are there to protect them.

   In order for a person to become a licensed Pro Hero, they must undergo an education and training program in the subject of heroism. These training programs are integrated within many high schools in Japan and are collectively known as a Hero course. Subsequently, high schools that include Hero courses are known as Hero Schools. The Hero course includes fundamental training in becoming a Pro Hero, including rescue training and combat training where Quirk use is fully permitted, and even training for dealing with the media. Schools with Hero courses also provide their students with their own costumes and support gear, which are tailored to suit their design choices and Quirk functions. Some Hero schools also incorporate different traditions and customs than others, such as U.A. High School having the power to freely expel and re-enrol students, or Shiketsu High School students wearing their commissar caps as part of their costumes. Students are trained so they can eventually earn their Hero licenses and become fully fledged Pro Heroes themselves, although some start out as Sidekicks for existing Pro Heroes before starting their own independent Hero career. While attending a Hero course during high school is the most common way of becoming a Pro Hero, it should be noted that there are other ways to attain a license.

   Hero students have the opportunity work as interns under licensed Pro Heroes. This allows the students to gain special training that their normal teachers would most often be unable to provide. There are two types of internships. The first type is the Hero Agency Internships; this involves a student merely shadowing a Pro Hero, listening to their advice and watching them in action for an entire week. Since the Students are unlicensed, they can't legally participate in Hero work. The second type is the Hero Work-Study; this comes after a student has passed the Provisional Hero License Exam and has earned their Provisional Hero License. Instead of being treated like guests at the agency, the students are treated like real Sidekicks, and are allowed to participate in relief efforts during emergency situations. This allows them to gain real experience and can help them get noticed by other Pro Heroes who might want to hire them as full time Sidekicks after they graduate. In order to work at an Internship or Work-Study, the Hero in charge of the agency must approve of the student working there, sometimes the student must have certain qualifications that goes beyond the proficiency of their Quirk. In some cases, such as the aftermath of the U.A. Sports Festival, Heroes actually send recruitment requests to the students whom they wish to have work under them. Other times, a student simply undergoes an ordinary job interview in order to become an intern.

   The Hero Network, also referred to as the "HN", is a website that can only be accessed by Pro Heroes. It contains activity reports of Pro Heroes across the country, as well as information on known Villains, including their names and Quirks.

   Heroes can also use the Hero Network to send requests for assistance to other Heroes who possess a Quirk that may be useful for a determined crisis.

   Biannually, all Heroes and Hero Teams in Japan are ranked by an event called the Japanese Hero Billboard Charts. The rating is determined by various factors, including a Hero's level of strength, number of resolved incidents, contributions to society, and public approval. An event is held to introduce the top 10 Heroes to the public. The higher a Hero ranks on the charts, the higher their wages and the greater their prestige, allowing them to build bigger agencies and spread their influence. The top 10 Heroes in particular are known all across the country. It is these rankings and the chance to climb higher that serves as motivation for many Pro Heroes and numerous Hero students desire to one day hold the title of No. 1, or at least work as a Sidekick for one of the top 10.

   Known pro heroes in Japan are:

   • Best Jeanist
   • Cementoss
   • Death Arms
   • Ectoplasm
   • Edgeshot
   • Eraserhead
   • Endeavor
   • Fat Gum
   • Gang Orca
   • Hawks
   • Hound Dog
   • Kamui Woods
   • The Wild Wild Pussycats team (Mandalay, Ragdoll, Pixie-Bob, and Tiger)
   • Manual
   • Mirko
   • Midnight
   • Mt. Lady
   • Present Mic
   • Rock Lock
   • Ryukyu
   • Snipe
   • Thirteen
   • Uwabami
   • Vlad King
   • Wash

   Before the Quirk phenomenon occurred, Villains only existed in fiction, such as the Demon Lord from the Captain Hero comic series. When Quirks seemingly made reality resemble these superpower-filled comics, the public took a second look at the concept of Villains, especially when some people began using their new gifts to benefit themselves instead of helping others. Some, like Yoichi Shigaraki, thought comics' idealist concepts could do good, including using the term "Villain" on real offenders. Meanwhile, others like All For One scoffed at the notion of Villains, saying the real-world wasn't so simple. Early on, who counted as a "Hero" and "Villain" had yet to be defined, blurring the line between the two. The most gray area of debate was where Vigilantes fit on the spectrum. At first, the countries of Earth were unprepared for this new type of criminal and were overrun. Even organized crime collapsed, with traditional organizations like the yakuza nearly going extinct. During this chaotic era, several notorious Villains arose, who would be remembered for decades, including: All For One, the Peerless Thief, and Destro. One major source of Villains in this era was the conflict between Quirk users, known back then as metahumans, and anti-Quirk factions, such as the Meta Liberation Army and the Creature Rejection Clan. Meanwhile, other Villains, like All For One, would profiteer from both sides. As the births of Quirk-users increased, acceptance rose with it, eventually making the conflict lose its prominence.

   With the efforts of Vigilantes, the world finally stabilized and hero society emerged from the ashes. An official definition was created for Villains, which, though to a lesser degree, included Vigilantes. The Pro Hero profession was created to combat Villains and the rate of crime became low in the modern day. Villains were forced to adapt to this regulated world. Some accepted their careers were likely short-lived and prioritized the thrill over secrecy, committing crimes in broad daylight. Meanwhile, others retreated to the shadows, waiting and planning for the time to rise again. For example, the Meta Liberation Army prepared Destro's descendant as his successor and members took over influential, yet legal professions. All Might alone sewed fear into the hearts of Villains, to the point where Villains like Number 6 had to be purposely discreet so as to not get on All Might's radar. Civilians felt so well protected, active crimes were watched like spectator sports. Even casual and snide remarks would be made at low-rate Villains.[9] While hero society succeeds in stopping physical crimes, its weakness is in addressing their social roots. Discrimination against people's abilities remained despite Quirk users becoming the majority, especially against heteromorphs. Society became obsessed with general heroism and individuals could be thrown to the wayside if they didn't fit that mold. Civil unrest remained brewing despite most physical rebellions being quashed.

   When All Might retired, there was a large resurgence of villainy. Bygone groups tried reclaim their power, while a new generation had their own visions for society. The League of Villains established themselves as Japan's greatest threat, dominating rivals like the Shie Hassaikai and Meta Liberation Army. Over a short time, the League united with the MLA and formed the Paranormal Liberation Front, increasing their numbers until they overwhelmed the Heroes. While the Heroes planned a raid to arrest and wipe out the organization, the Villains' retaliated and the fight escalated to a full-on war resulting in many casualties and mass destruction. Following this, Japan became a warzone, with five prisons being liberated and Heroes quitting on record levels. After much bloodshed, the remaining Heroes defeated the League and their allies. However, the younger Heroes didn't want to repeat history's mistakes and refocused on the social origins of villainy. They implemented empathetic approaches towards Villains, such as negotiation and rehabilitation.

   Special Prison For Villain Criminals, Tartarus, is a prison distanced from civilization where extremely dangerous Villains are imprisoned and interrogated under the highest security standards possible. The high-security prison is located on an island about five kilometers from the mainland, surrounded by giant walls. The only access to the prison is a long bridge connected to a city with the entrance guarded by two or more guards that check every vehicle going in. The gate that stands in front of the mainland side of the bridge is known as "The Bronze Gate". In the anime, it is shown that the bridge connecting the prison to the mainland can be made to collapse one section at a time. Tartarus' interior is heavily armored with blast doors lining narrow, steel-plated hallways. Prisoners incarcerated inside Tartarus are heavily restrained, sitting down restrained on a large, high-tech chair with a full-body straitjacket. Though nominally a prison, the facility effectively serves as a dumping ground for individuals who threaten or have threatened public safety to a drastic extent. Regardless of sentencing status, these individuals are incarcerated and heavily monitored in Tartarus.

   The Meta Liberation Army, often acronymized as M.L.A., was a large, powerful villain organization that follows the philosophy that the free usage of Quirks is a basic human right and emphasizes liberation over regulation.

   The original Meta Liberation Army was founded and led by the infamous Destro and the current army was refounded and led by his descendant, Re-Destro. The newer army later merged with the League of Villains to form the Paranormal Liberation Front.

   The Paranormal Liberation Front was a large, powerful Villain organization formed from the union of the League of Villains and the Meta Liberation Army. It was led by the Grand Commander, Tomura Shigaraki.

   He was the founder and benefactor of the League of Villains. Once Japan's most powerful Villain, and All Might's arch-nemesis, his ultimate goal was to steal One For All, the Quirk that originally belonged to his younger twin brother, and the only Quirk that can oppose him. He was the adoptive father and mentor of Tomura Shigaraki, having spent the young villain's life shaping him into a successor, and a vessel for his power in order to transfer his mind into his adopted son's body, as part of his plan to eventually conquer the world as a self-proclaimed "demon lord". He was imprisoned in Tartarus after his second defeat at All Might's hands until he escaped several months later, single-mindedly focused on destroying the ninth wielder of One For All, Izuku Midoriya, to complete his century-long plan. In the past, All For One was a towering man with a powerfully muscular physique, imposing features, short white hair, and faded white eyes that showed no sense of feeling. In their first colored depiction in the anime, All For One's eyes were colored red. After being mortally injured by All Might years ago, All For One's face was entirely made up of scar tissue, extending from above his upper lip and covering his entire head and the back of his neck. As such, he had no visible nose, ears, hair, or eyes, though the outlines of his eye sockets were somewhat visible. This left All For One blind, but he was able to used a Infrared Quirk to "see", and he would sense the directions of vibrations in the area around him, similar to echolocation. There was a small hole in each palm of his hands, which is how he stole and transferred Quirks.

   He was the leader of the League of Villains, making his first major appearance as one of the main antagonists of the U.S.J. Arc. He was raised by his master, All For One, with the goal to kill All Might, the "Symbol of Peace", and ultimately destroying the society he represents. He soon merged his organization and the Meta Liberation Army to form the Paranormal Liberation Front, becoming its Grand Commander and later inheriting the All For One Quirk. As a result, All For One's vestige seized control of his body and tried to merge the two of them into a new being. Eventually, Tomura was able to thwart his master's attempt at usurping his body and soul, reclaiming autonomy and declaring himself Izuku Midoriya's arch-enemy. Tomura was eventually defeated in battle by Izuku, when his will was once again overtaken by All For One. Learning of his true origins, Tomura helped Izuku take down his former master once and for all. Though his body was sacrificed in the process, he declared that he fought to destroy until the very end. Tomura was a slim young man with pale skin, tinged yellow teeth, and a great deal of wrinkles around his eyes from scratching at allergies that irritated the surrounding skin since his childhood. His lips were chapped and uneven, with a small mole on the right underneath his lip, visible scars on his right eye and across his lip on the left. He had long, messy, white hair. His eyes and mouth were normally obscured, but when visible, they were usually stretched wide in a rather maniacal manner, with bright red irises looking very small.

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