Nearly everyone in the world of My Hero Academia is blessed (or cursed) with a Quirk — a genetic factor that manifests some kind of new ability absent in modern humans. In fact, it's so common that it's considered humiliating or shameful to be born without one, as seen from the way Bakugo and the others mock poor Midoriya.
The three types of Quirk, Emission, Transformation, and Mutation, give rise to a vast variety of superpowers, from flight to fire, and some of them cause physical modifications to the person's anatomy as well. Even among these infinite possibilities, however, there are a few Quirks that are downright weird, for lack of a better term.
10 Suneater's Manifest Converts Food Into Body Parts
Tamaki's Quirk, Manifest, lets him reshape his entire body based on the features of the food he has recently consumed, more so if it's in his intestines and stomach. For example, eating crab meat would produce claws from his arms, and so on.
What's stranger is the fact that he can be literally anything he heats, even if it's inedible. Suneater's diet is filled with octopus and clam, as these body parts are extremely efficient in most combat situations (not to mention easily available dishes).
9 Sato's Sugar Rush Requires 10 Grams Of Sugar
Rikido Sato's Sugar Rush sounds quite simple — a physical prowess amplification five times over the base level each time he consumes 10 grams of sugar. It's easy enough to obtain the nutrition he needs, and this Quirk is best suited for brawler-types, which he is.
The problem, however, is that Sugar Rush can only be triggered if he has glucose flowing in his bloodstream. In other words, it's like the superhero version of sugar highs and sugar crashes.
8 Fumikage's Dark Shadow Creates A Mysterious Entity
Fumikage's Quirk is really quite unique: a Dark Shadow, so to speak, that emerges from his physiology whenever he calls for it. It has an independent consciousness, and it is devoted utterly to its wielder. The power of Dark Shadow is conditional on the absence of light, as it seems to draw its energy from the concept of "darkness."
It gets tricky for Fumikage when fighting under different light scenarios, with his Quirk becoming more aggressive and violent with reducing brightness. How it works is unknown, as is the full extent of its functionality.
7 Kinoko Komori's Mushroom Makes Mushrooms
Mushroom is actually a rather useful Quirk, especially for combat, but its nature is downright bizarre. Kinoko can basically produce and disperse spores synthesized by her cells.
They instantly sprout into adult mushrooms wherever they land, regardless of the type of surface (skin, cement, plastic, whatever it may be.) If this doesn't sound unnerving, consider the fact that she can develop a mushroom inside someone else's wind-pipe, temporarily depriving them of oxygen.
6 Setsuna Tokage's Lizard Tail Splitter Can Fragment Her Body
Like a lizard's ability to self-amputate its tail when threatened, Setsuna can break her anatomy up into multiple fragments, which is quite an unusual sight.
It gets wilder — in addition, she can manipulate the individual sections of her body with her mind, allowing her to launch an assault from multiple angles simultaneously. While the Lizard Tail Splitter Quirk is quite complex and layered, watching a bunch of disembodied pieces flying around the place is strange, to say the least.
5 Manga Fukidashi's Comic Makes Onomatopoeia Come To Life
Manga, named for obvious reasons, can utilize his Comic Quirk to produce actual words in physical form. As such, his head takes the shape of a speech bubble, from which he accesses his literal text.
With specific character combinations, Manga can generate a variety of outcomes, from destroying large objects, creating barriers, making shields, and so on. It isn't clear what the limits on Comic are, but it's clearly one of the more quirky Quirks.
4 Tatami Nakagame's Telescopic Lets Her Retract Her Limbs
Tatami Nakagame's Telescopic is highly convenient in battle, especially in terms of dodging and parrying. This Quirk gives her the power to pull her arms, neck, and legs inside her body, not unlike a tortoise.
Unfortunately, Tatami has a massive disadvantage: the retraction process occurs in a flash, but the reversion takes more time (leaving her open to attacks.) Sure, it might look very odd, but Telescopic has proven itself versatile to take on techniques as overwhelming as the Piercing Twilight Claws employed by Tokoyami.
3 Seiji Shishikura's Meatball Controls Flesh
An entry in the grotesque category is Seiji's Quirk, Meatball, which converts parts of his body into weapons and shields. This may not sound all that eerie, except he can extend his powers to his opponents as well.
In short, he can metamorphose entire human beings into balls of meat, within which the trapped person is able to perceive everything taking place around them (which sounds so much more horrifying for them). Meatball is capable of handling Bakugo's Explosion, a testament to its durability.
2 Romero Fujimi's Zombie Virus Creates Zombies
Romero is a reference to famed Hollywood director, George Romero, who specialized in zombie horror. His Zombie Virus makes an aerosol that can enter into his opponent's lungs and briefly mutates them into zombies.
This Quirk causes havoc at the Survival Training Exercise in the OVA, Training of the Dead, at least until Bakugo (as a zombie) manages to pierce Fujimi's skin, consequently transfiguring him into one, as well.
1 Yuga Aoyama's Navel Laser Performs As Advertised (But Its Location Is Unconventional)
To be fair, Yuga Aoyama's laser powers are nothing to scoff at: they can be utilized for a number of purposes, from improving visibility to generating incredibly powerful blasts of energy. The peculiarity, in this case, relates to the source of the laser, which happens to be Yuga's navel.
It makes the beam a lot more difficult to wield, given that he has to depend on the gyration of his hips, which possess considerably lesser freedom of motion than, say, rotator cuffs. Also, what does a bellybutton even have to do with lasers?