InMy Hero Academia, a Quirk is more than a superpower; it’s a personal trait that defines the destiny of heroes and villains. With society built around the incredible abilities ofQuirk-bearers, the line between safeguarding peace and causing destruction is razor-thin.
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The most dangerous Quirks in this universe are not merely tools of power but are symbolic of their users' wills and ideologies. From the catastrophic decay induced by Tomura Shigaraki’s touch to the reality-bending stealing of All For One’s Qurik ability, these powers threaten to upset the balance of the world. This list explores the most dangerous Quirks in My Hero Academia.
My Hero Academia
10Stain - Bloodcurdle Quirk
Induces Paralytic Freeze
Stain’s Quirk Abilities
Stain, also known as the Hero Killer, wields the dangerous Quirk Bloodcurdle. This ability allows him to paralyze his targets by ingesting their blood samples. The duration of paralysis depends on the blood type of the victim, with type B being the most susceptible. Stain’s precise and agile combat skills enable him to draw blood with knives and katana, making him exceptionally lethal.
Throughout the series, Stain employs Bloodcurdle with terrifying efficiency against numerous Pro Heroes and students from U.A. High School, including Tenya Iida, whose brother Ingenium was previously crippled by him. Ultimately, Stain’s ideology and Quirk incite widespread fear and conflict.
9Thirteen - Black Hole Quirk
Atomic-Level Disintegration
Thirteen’s Quirk Abilities
Thirteen’s Quirk, known as Black Hole, allows her to create a vortex that disintegrates matter at an atomic level. She is a Pro Hero specializing in rescue missions, utilizing this Quirk to clear debris and help in disaster relief. However, the potential for destruction is immense, making it incredibly dangerous in the wrong hands.
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During the U.S.J. incident, Thirteen uses Black Hole to try to stop the invading villains, demonstrating the Quirk’s power and risk. While intending to save her students, she nearly sucks up Ochaco Uraraka, showing how lethal it can be if someone is accidentally caught in its grasp.
8Eri - Rewind Quirk
Unpredictable Existential Threat
Eri’s Quirk Abilities
Eri, a young girl with a tragic past, possesses the daunting Quirk Rewind. This ability enables her to reverse a person’s body to a previous state, which can lead to reversing someone out of existence. However, the villain, Overhaul, uses her abilities to manufacture a drug capable of eradicating Quirks by rewinding the evolutionary process responsible for their development.
When Eri’s power spirals out of control during the Shie Hassaikai Raid, Midoriya’s use of One For All at 100% prevents her from erasing him, as he continually injures himself at a rate that balances out her Rewind. Eri’s Quirk is extremely risky due to its unpredictability and the irreversible nature of its effects.
7Endeavor - Hellflame Quirk
Extreme Heat
Endeavor’s Quirk Abilities
Endeavor, the fiery hero known as Enji Todoroki, possesses the Quirk Hellflame, which grants him the ability to produce and control intense flames. As the No. 1 Hero after All Might’s retirement, Endeavor’s mastery of Hellflame is unparalleled, allowing him to use it for powerful attacks, high-speed flight, and even create fire constructs.
However, the danger of this Quirk lies in its sheer power and potential for collateral damage. In his fierce battle against the High-End Nomu during the Pro Hero Arc, Endeavor’s Hellflame was pushed to its limits, showcasing its destructive force and the toll it takes on his body, risking overheating.
6Katsuki Bakugo - Explosion Quirk
Unpredictable Blast Hazard
Katsuki Bakugo’s Quirk Abilities
Katsuki Bakugo, a student at U.A. High School, possesses the volatile Quirk Explosion. This power allows him to secrete a sweat-like nitroglycerin substance from his palms and ignite it at will, creating powerful blasts. The Quirk’s intensity is linked to his sweat glands, making it stronger with physical exertion and adrenaline, as demonstrated in many of his battles.
The danger of Explosion is multifaceted; it can cause massive destruction to the environment and potentially harm bystanders. His most dramatic display of power is during the attack at the training camp, where he unleashed a series of blasts to fend off the League of Villains.
5Shoto Todoroki - Half-Cold Half-Hot Quirk
Extreme Temperature Hazard
Shoto Todoroki’s Quirk Abilities
Shoto Todoroki is a prominent character who wields the Quirk Half-Cold Half-Hot. This dual-natured power allows him to generate ice from the right side of his body and flames from the left. However, the Quirk’s danger is two-fold: the ice can cause hypothermia or frostbite, while the flames can result in severe burns or fires.
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At the U.A. Sports Festival, Todoroki’s use of ice nearly incapacitated his classmates. He shows reluctance to use his fire due to his troubled past with his father, Endeavor. However, during his battle with Izuku Midoriya, Todoroki embraced both sides of his Quirk, unleashing a catastrophicwave of fireand ice, epitomizing the vast destructive potential if left unchecked.
4Kai Chisaki - Overhaul Quirk
Molecular-Level Manipulation
Overhaul’s Quirk Abilities
Kai Chisaki, known by his villain name Overhaul, wields a deadly Quirk that shares his alias, Overhaul. This Quirk allows him to disassemble and reassemble anything he touches, effectively giving him the power to destroy and reconstruct at a molecular level. This Quirk’s danger is profound, allowing Chisaki to instantly kill or manipulate the environment.
Overhaul’s most heinous use of his Quirk was during the Shie Hassaikai Arc, where he disassembled and reassembled his subordinates. His climactic battle with Izuku Midoriya showcased the terrifying scale of his power as he merged with his subordinates to increase his size and strength, demonstrating his Quirk’s lethal and versatile nature.
3Tomura Shigaraki - Decay Quirk
Disintegration On Contact
Tomura Shigaraki’s Quirk Abilities
Tomura Shigaraki, shrouded bydark originsand the leader of the League of Villains, possesses the harrowing Quirk Decay. This ability allows him to disintegrate anything he touches with all five fingers, causing it to crumble to dust. The Quirk’s destructive capacity is immense and uncontrollable, leading to devastating consequences.
Throughout the series, his control over Decay evolves, reaching a terrifying climax during the Paranormal Liberation War arc. Here, Shigaraki gains the ability to decay large swathes of the city and disintegrate numerous heroes with his Quirk without needing direct contact. This amplification turns Decay into one of the most dangerous Quirks.
2Deku - One For All Quirk
High Raw Power
Deku’s Quirk Abilities
One For All is a unique and powerful Quirk currently wielded by Izuku Midoriya, also known as Deku. This Quirk is passed down through generations, with each bearer stockpiling and transferring their power to a successor. One For All enables Deku to access superhuman strength, speed, and agility.
However, its raw power is so immense that it can be self-destructive, as it causes Deku’s bones to break in a fight against Katsuki Bakugo. However, the danger of One For All extends beyond the user’s self-harm. If unleashed with full force, as seen in All Might’s last stand against All For One, it can cause catastrophic destruction. The Quirk’s transferability also makes its bearers targets for villains seeking its power.
1All For One - All For One Quirk
Quirk Theft Menace
All For One’s Quirk Abilities
All For One is a Quirk that belongs to the series' main antagonist of the same name. This Quirk allows him to steal Quirks from others and then use them as his own or bestow them upon his subordinates. Its inherent danger lies not only in the act of theft itself, which can debilitate or even kill its victims, but also in the unpredictable combinations of Quirks All For One can wield simultaneously.
All For One’s use of this Quirk has reshaped society and fueled conflict like the climactic battle at Kamino Ward. He revealed the horrifying extent of his power by utilizing multiple stolen Quirks to severely injure All Might. All For One’s ability to disrupt the natural order and unparalleled danger makes it the top Quirk on this list.
