League of Villains!

Doctor Garaki
The scientist behind numerous experiments related to villains and their Gifts.
Personality: extremely intelligent, manipulative, obsessive, and unscrupulous.
Its essence: science + obsession + experimentation.
Gift: Life Force, which greatly increases his longevity.
In the group: scientist and key collaborator of All For One.
All For One
Although he is not exactly a regular member of the Front, he is too important to leave out.
Personality: manipulative, calculating, patient, and extremely ambitious.
Its essence: control + power + domination.
Gift: All For One, which allows him to steal Gifts and use them or transfer them to other people.
Within the group: the figure who orchestrates many events from the shadows and who has enormous influence over Shigaraki.

Gigantomachy is a huge man, at least three stories tall, with a muscular build. His chestnut hair stands out like that of a wild beast, and his body parts seem jagged, resembling stone. His teeth are pointed, and his lower fangs are noticeably prominent. He always carries a portable radio with him, sometimes tying it to a rope around his neck. In public, he appears in a cloak with a hood, and later he starts wearing a new set of armor. At first, Gigantomachia seems polite, but he quickly becomes impatient and aggressive if he isn't cooperated with. He is a fanatical servant of “All For One” and a former bodyguard of All Might, who was specially trained to be useful to Tomura Shigaraki in case something happens to his master. His loyalty is so great that simply listening to a recording of All For One's voice can calm him down in a moment of blind rage.

Gigantomachia has several quirks that make him an extremely dangerous opponent:

Stamina is a native quirk that transforms combat spirit into pure physical strength and endurance, distributing it evenly throughout the body, including the organs.

Pain block - makes him insensitive to any pain.

Gigantism — increases his size depending on the degree of inspiration. When he calms down, he shrinks again.

The dog - significantly enhances all sense organs (smell, hearing, vision) beyond human and even animal limits. Even in sleep, it instantly reacts to an attack.

Energy efficiency - allows the body to use resources rationally, which is why Gigantomachia can go for months without food, water, or sleep.

Tough muscles — strengthens its muscles and body durability.

The mole — creates a bone exoskeleton on its body for digging. In this mode, he grows claws on his fingers, like a mole, and spines on his serrated back that help him burrow underground.

Shuichi Iguchi, also known as Spinner, is a villain affiliated with the League of Villains and a member of the Vanguard.

Spinner's Appearance:
Shuichi's appearance resembles that of a giant reptile. His skin is covered in green scales, and his face is shaped like a lizard's. He has long, pink hair slicked back. As a sign of his admiration for Stain, he wears clothing reminiscent of his costume: a light sleeveless T-shirt, dark pants, black boots, and spiked knee pads. He also wears a long, wide headband like a mask, a black scarf, and bandages on his arms. He carries a large sword on his back and wears glasses on his forehead.

Spinner's Personality:
Shuichi is a cruel and unscrupulous man who enjoys inflicting pain on others. For example, he was clearly delighted by the helplessness of Pixie-Bob after he injured her.
Like Dabi, Shuichi admires Stain so much that he copies his clothing style and equipment, fanatically follows his ideals, and dreams of making his goals a reality. He also respects Stain's wishes—for example, he protected Izuku from Magne, explaining that Stain considered him worthy of the title of hero and spared him. Compliments directed at him, especially from girls, can easily confuse him. Spinner enjoys video games. For example, I have learned to drive thanks to games.

Spinner's Quirk:
Gecko: Iguchi's Quirk takes the form of a gecko, which is clearly evident in its reptilian appearance. His Quirk also grants him specific skills

Atsuhiro is usually the voice of reason among the League of Villains and seems to care about his comrades; he is funny, respectful, and very chivalrous. Compress: Atsuhiro's Quirk allows him to "compress" anything within a spherical area around his arm into a small, marble-like object without damaging it. He can only compress his target if he touches it.
The target's weight is reduced when used with them, making them very easy to carry. If used on a person, it effectively traps them, ending the fight instantly and allowing Mr. Compress to easily kidnap them.
The Quirk can also be used on selected body parts, quickly and efficiently mutilating the target. It is implied that mutilating a body part using Compress is painless.

Atsuhiro Sako, also known as Mr. Compress, is a recurring villain affiliated with the League of Villains.
Atsuhiro is a tall, thin man with pale skin and semicircular, slightly inward-slanting brown eyes, and has a noticeably pointed nose. He wears a combination of a mask, balaclava, and hat. Beneath his mask, it is revealed that he has short black eyebrows and a head of curly brown hair, similar in tone to his eyes.

In his villainous attire, he wears a dark orange shirt with the collar turned up, a green striped bolo tie with a blue oval-shaped brooch hanging around his neck, a black vest, and black dress pants. He wears white knee-high boots with wedge heels and black toe caps, plain dark red gloves, a tall brown top hat, a red ribbon tied around it, and a pale feather sticking out on the left.

On his head, he wears a black balaclava with a hole for his mouth and eyes, over which he wears one of multiple white masks he owns, each with a different black geometric design. In his first appearance, he also wears a dark yellow double-breasted coat with buttoned tabs at the shoulders and a high collar, which reaches below his knees, and additionally carries a silver cane with a golden handle.

Double: Jin's Quirk allowed him to create an exact duplicate of anything, living or not. In order to duplicate something, he needed to know the precise measurements and characteristics. He was limited to only two duplications at a time. The duplicates were less durable than the original; the second duplicate was even less durable than the first.

When Jin created duplicates of a person, he had no control over the clones because they had their autonomy, personality, and abilities completely identical to the original. Creating doubles of himself allowed him to overcome his limit of two duplicates, as a duplicate of a person would possess the same Quirk as the original. Jin was initially unwilling to duplicate himself due to traumatic experiences involving his clones, but overcame this during the Revival Celebration.

Twice was a fairly well-built man with blond hair and blue-gray eyes. He had a large scar across his forehead from a past incident. He had visible traces of facial hair above his mouth and on his lower chin. On two occasions, his civilian attire consisted of a blue collared shirt over a white sleeveless undershirt, along with standard trousers and boots.
His villain costume consisted of a black and gray jumpsuit that covered his entire body, along with gray boots. The upper half of his signature mask was gray with white eye sockets, while the lower half, covering his mouth, was black. On two occasions, he also wore red and green wristbands in which he kept his measuring tapes.
Most of Twice's outfit was black, except for the section over his lower legs and the gray designs that appeared to form a "T" and a "W" on his chest. The "T" was formed by a horizontal line across his upper torso and a vertical line rising from his abdomen. Another line snaked down his lower torso and split down to his thighs, then up to his hips, forming a "W". Twice had an incredibly unique personality: explosive, lively, and originally very comedic, he was highly bipolar, able to change emotions in a second. He liked to strike dramatic poses and make eccentric facial expressions. Twice he constantly contradicted himself, making a statement in one voice and immediately saying the opposite in another.
This juxtaposition was part of a mental instability that Twice would embrace as a villain. He believed that understanding one's own identity was the most essential aspect of life, an understanding he lost during the nine-day conflict with his clones that left him unsure whether he was the original or not. Twice the identity crisis drove him to madness, shifting his previously authoritarian and lazy personality into a manic state.

Danger is imminent, as shown when Tomura Shigaraki was about to attack her,[8] but she tends to stop when she is bored or annoyed. Himiko is frequently seen blushing, seemingly from excitement rather than embarrassment, giving her a permanent expression of what appears to be lovesickness. However, she has shown that she can be easily embarrassed, such as when she believes people are approaching her or when she is naked while copying the clothes of the people she has transformed into.
Obviously, Himiko is mentally unstable and has a very twisted perception of love and friendship.
Himiko is quite brave, or at least very confident when using her Quirk, even going so far as to pose as a hero-in-training and participate in an exam that brought together thousands of student heroes and several professional heroes. She has also displayed a comical and childlike demeanor in various situations.
Like most of her allies, Himiko has stated that she finds life difficult in the current world and wants it to be an easier place to live. She admires Stain and sees him as her role model, declaring her desire to kill and "become" him (possibly a reference to her Quirk). Transformation: Toga Himiko's Quirk allows her to transform into anyone simply by drinking their blood. Upon drinking another person's blood, they will transform into her, acquiring their Quirk and appearance, although the duration of this Quirk is limited.

as if she has a pretty face. She has yellow eyes that slant inwards with thin, slit-like irises, somewhat resembling a cat's, and her wide mouth is also quite feline, as her canines are pointed and longer than the rest of her teeth, giving her a vampiric appearance. Her hair is a pale ash blonde color and is styled into two messy buns, with numerous wild strands sticking out, a straight fringe, and two chin-length side bangs framing her face.
Her usual attire consists of a plain Kansai-collared seifuku, both the skirt and shirt being dark blue with a double white trim, which is paired with a red scarf that she loosely ties underneath. Over this, she wears an oversized beige cardigan with a long hem and cuffs, and pockets on either side; the right one shown to hold a number of trinkets on a keychain or cell phone strap. She wears black knee-high socks and dark brown outdoor school shoes. She sometimes wears a duffle coat, given to her by Skeptic after she damaged her old one in her fight against Curious.
In her villainess attire, she wears the same outfit but with a few additional elements: her black, piping-trimmed mask; the green knife boxes strapped around her thighs; a blue belt around her waist with more boxes on either side. The most distinctive feature is the loose black mask she wears around her neck, which is decorated with pale gray metal pieces in the shape of a carnivorous grin. Three large silver canisters are attached to the sides of her mask; the protruding needles connect to the two larger cylinders attached to the back of her belt; this is the mechanism by which Himiko uses to suck people's blood for her Quirk.

After changing his name to Dabi, he became a stoic, aloof, confident, and focused individual who rarely shows emotion. Although quite crude and violent, he is cautious.
In general, Dabi is a very enigmatic individual who doesn't trust anyone and prefers to do things alone and his way. He also gives the impression of knowing more about certain people than he lets on.
Despite his typically expressionless demeanor, Dabi finds joy in establishing himself as a villain fighting against what he believes to be false heroes, an ideology championed by his apparent inspiration, Stain. Dabi is dedicated to Stain's mission and desires to destroy superhuman society, sharing his belief that a person with the necessary conviction can do so. He is shown to share Stain's sentiment that heroes are hypocritical and unworthy of the title, but unlike Stain, he doesn't seem to seek a society with better heroes, believing that true heroes don't exist. Blue Flame (蒼そう炎えん, Sōen?): Dabi's Quirk grants him the ability to generate and control highly destructive blue flames from his body. Originally orange and red, his Quirk turned blue after undergoing a growth spurt. He has highly developed control over his flames and can project them far away from himself and in large quantities. Furthermore, his flames possess greater firepower than his father's and become even stronger when Dabi experiences intense emotions. However, Dabi's body has little tolerance for his flames because he inherited his mother's resistance to sub-zero temperatures instead of his father's resistance to intense heat, and he will burn himself if he uses them for extended periods. It can also be fatal if he raises the temperature to its maximum.

Dabi is a reasonably tall, pale, slender but somewhat muscular young man, described as being in his early twenties. He has white hair with a few red streaks on the crown that rises around his head, hanging over his thin, turquoise eyes with prominent eyelids. Dabi's hair was dyed black before he revealed his true identity.
His most striking features are undoubtedly the patches of purple, wrinkled, and knobby skin that cover much of the lower part of his face and neck, down to his collarbone, under his eyes, around his torso, and on his arms and legs. These patches appear to be attached to the rest of his skin by multiple crude surgical staples or hoop piercings.
He has several silver piercings in the cartilage of both ears and a triple piercing on the right side of his nose. Upon closer inspection, he also lacks earlobes on both sides. In his first appearance, he wears a dark blue jacket with a high, ripped collar, matching trousers cut above the ankles, and a pair of dark dress shoes. He also has a pale gray crew-neck shirt, beneath which a gray belt with a circular pattern is wrapped around his waist, and a leather satchel strapped to his back.

As his name suggests, Kurogiri's entire body is made of a dark purple mist, except for his eyes, which are bright yellow. He usually wears a very elegant suit and tie and has a metal brace that runs from around his collarbone to just below his eyes.
In his villainous disguise, he is shrouded in a dark mist, with only the metal brace around his neck visible. Kurogiri is very polite and speaks well even to his enemies, sometimes introducing himself formally. However, like his fellow League villains, he possesses a truly sinister nature and has no qualms about putting student heroes in situations where they would be tortured or killed.
Kurogiri expresses concern, as seen when he is constantly worried about Tomura's position and immediately tried to inquire about his well-being. Kurogiri himself has stated that he wasn't bothered by Tomura's personality at all and was simply concerned for his welfare, greatly surprising his former classmates that he still retained this trait. Warp Gate: Kurogiri's Quirk grants him the ability to create and manipulate a dark mist from his head and hands. This mist acts as a portal to another location. Each time he produces a mass of dark mist, it transports anything it comes into contact with to a location chosen by Kurogiri. His Quirk is coordinate-based, so to use it, he needs to know the exact location where he is supposed to open the exit portal.
You can also create multiple exit points through which things that touch your fog will emerge.

Tomura's Quirk allows him to disintegrate anything he touches with his five fingers. It will take effect whether the target is organic or not. The disintegration spreads rapidly and will affect the entire body of the victim if the decaying body part is not amputated. His Quirk can even extend beyond what he touches, allowing him to disintegrate large groups of enemies instantly.
After his surgery, Tomura's Quirk became significantly more powerful, allowing him to decompose nearly a third of Jaku City. Furthermore, the power of Decay increased so much that even being struck by a piece of decaying debris was enough to kill a person. Tomura not only managed to increase the power of Decay, but he also gained a much greater degree of control over it, allowing him to choose specific targets to avoid using it, which he did to save several of the Nomu.

Tomura is a thin man with pale skin and wrinkles around his eyes from scratching the rashes that irritated the surrounding skin since childhood. His lips are slightly chapped, with a small mole on the right side beneath them, and visible scars above his right eye and below his lip. He has messy, bluish-gray hair of varying lengths, the longest strands reaching his shoulders and hanging in uneven waves over his face. His eyes and mouth are usually obscured, but when visible, they are typically wide open in a rather manic manner, their tiny, glowing red irises. His villain costume consists of fourteen embalmed hands, each positioned to grip different parts of his body. These hands were taken from dead individuals and embalmed by Kyudai Garaki, who gave them a zombie-like bluish-gray color and attached a golden box with two holes drilled in the bottom to their bases.
Each pair of these hands originally belonged to an individual killed by Tomura during the time his Quirk first manifested: the ones on his neck were his mother's; on his arms, his grandfather's; on his forearms, his grandmother's; on his wrists, his sister's; and the ones on his chest and shoulders were from two anonymous street punks he killed.
The hand that held Tomura's face, which he sometimes kept in his pocket, was his father's left hand, whom he called "Father." His right hand was accidentally destroyed by him, so Kyudai had to make one to hold atop Tomura's head; this hand was connected to his mother's hand by two red cords and was later revealed to be his paternal grandmother's. He cared little for his own life or the lives of almost anyone else, and had no qualms about committing evil deeds such as murdering innocent people.