Himiko Toga/Synopsis

History
Himiko was a high school student, who became a suspect on the run for serial blood draining murders.

After Stain's backstory was revealed to the public, Himiko seemed to have been inspired by his conviction and decided to join the League of Villains.

Vs. Hero Killer Arc
Three days following the Hero Killer's arrest, Himiko skips down a dark alleyway. She has headphones in and she listens to the news report on Stain's capture. Later on, before she moves on towards the League of Villains, Himiko is seen blushing in front of a man that is bleeding in an alleyway.

Final Exams Arc
Giran brings Himiko and Dabi to the League of Villains hideout. Himiko is excited to meet "the hand guy" and asks him to let her join the group. Tomura Shigaraki wants them both thrown out, but Kurogiri convinces him to give them a chance. Giran introduces Himiko as a cute high school girl who was the suspect in a series of murders by bloodloss and who's appearance and name the media had kept from the public. Himiko presents herself and says life is too hard and she wants to make it easier to live. She goes on to say that she wants to be like Stain, she wants to kill Stain, and she really wants to join Tomura's group.

Tomura asks Giran if she is crazy. Giran replies she is competent enough to be of use and then introduces Dabi. Dabi questions the League's commitments to the Hero Killer's mission because he cannot believe they would let someone as crazy as Himiko in if they are. She is taken back by his comment and Tomura defends her by saying at least she had the decency to introduce herself.

After arguing with Dabi, Tomura takes exception to the recruits' loyalty to Stain and attacks them. Himiko draws her knife and counterattacks, but Kurogiri uses his Quirk to stop the fight. Tomura storms out and Kurogiri asks the new recruits to be patient because an answer will come for them soon. Himiko mentions that she thought Tomura was going to kill her.

Forest Training Camp Arc
Himiko is eventually recruited to the League of Villains and assigned to the Vanguard Action Squad. Tomura acquires equipment for the team and has them pick it up at an unknown warehouse location. Himiko announces there is enough gear for everyone and they should bring it along on their mission. Muscular adds they need to hurry up, but Mustard disagrees because the team has been ordered not to rush or do anything too flashy. Dabi proclaims that their mission will be a warning shot that will tear down false heroes from their shining pedestals and drag them back to earth in order to create a new future for the world.

The next day, Himiko and six other villains secretly arrive on the Wild, Wild Pussycats' forest reserve where U.A. High School students are training. The Vanguard Action Squad observes the campsite from a high vantage point. Himiko puts on her new gear and complains about the way it looks. Mustard argues that she should be concerned about its functionality. She ignores him and says that it is not stylish enough for her.

The Vanguard Action Squad begins their assault the next evening. Himiko finds Ochaco and Tsuyu walking through the forest and cuts Ochaco's upper left arm open. The wound is not large enough for Himiko to collect a lot of blood. She mentions that she normally sucks it straight from the wound. Without enough time to do that, Himiko arms herself with the blood-draining devices from her new equipment. Tsuyu flings Ochaco away after Himiko rushes at them. Himiko cuts Tsuyu's tongue and notices that Ochaco called Tsuyu "Tsu-chan". Himiko likes this name and declares she will call Tsuyu that too. Tsuyu refuses her and says only her friends can call her by her nickname. Himiko pins Tsuyu to a tree by her hair and says that they must become friends if that is the case.

Ochaco returns to save Tsuyu and Himiko stabs at her. Ochaco evades before using martial arts to slam Himiko and restrain her. Himiko starts talking to Ochaco, noting that they have the same smell because they are in love with someone. She goes on to explain that someone who is in love tries to become the person they love. Himiko says she loves people who are cut up and bleeding and that it is fun for the girls to be talking about their crushes. This distracts Ochaco enough for Himiko to stab her leg and drain her blood with a needle.

Other students arrive at the scene, so Himiko quickly flees, fearing that taking on a large group will get her killed. Before she fully retreats, Izuku Midoriya catches her eye. Ochaco wants to pursue Himiko, but Tsuyu stops her because they do not know anything about the villain or her Quirk. Following Mr. Compress' successful capture of Katsuki Bakugo, Himiko regroups with the remaining villains. Dabi inquires about Himiko's mission to collect three blood samples. She admits she only got one person. Twice asks why she appears to be so upbeat after failing. Himiko replies that she has made new friends and found a boy she is interested in.

The same boys who interrupted her fight earlier abruptly arrive after tackling Mr. Compress to the ground. Himiko jumps on top of Izuku as he falls to the ground and tries to stab him, only for Mezo Shoji to push her away from him. Himiko threatens Mezo for getting in her way. Kurogiri arrives to warp the villains to safety. As Himiko enters a portal, she apologizes and says goodbye to Izuku, hoping to see her crush again another day.

Hideout Raid Arc
Himiko returns to the hideout with her comrades after successfully kidnapping Katsuki. She listens as Tomura and the others explain why the League exists to destroy Hero Society and they try to convince him to join. Katsuki refuses and attacks Tomura, exploding the mask off his face. The U.A. student tells the League he wants to be like All Might and not the villains.

Magne comments that Katsuki is clever but Dabi disagrees. Himiko simply adds that she'll stab Katsuki. Tomura tells everyone to calm down and not to touch Katsuki. He puts his mask back on and asks his master to lend him the ability to force Katsuki into submission. Suddenly, Kamino's pizzeria knocks on the door, confusing everyone including Himiko. All Might abruptly breaks in the wall of the hideout alongside a team of heroes.

Kamui Woods restrains all the villains using his Lacquered Chains Prison. The Police have thoroughly investigated the League of Villains and discovered most of their identities. Himiko watches in horror as Edgeshot knocks out Kurogiri and the League loses any hope of escape. All Might and Gran Torino declare its over for the League.

Just when all hope is lost for the villains, a mysterious black liquid transfers Nomu into the hideout. The same liquid warps the villains away and they re-appear by All For One at the Nomu Factory. All Might follows them there and All For One holds him off. He orders them to recapture Katsuki Bakugo before the heroes catch up with them.

Himiko and her allies ambush Katsuki and he avoids them using his explosions. Himiko uses her knives to try and cut Katsuki but his explosions keep her back. Katsuki's classmates make a sudden rescue attempt that succeeds and he escapes the battlefield. Gran Torino arrives on the battlefield and knocks out most of the villains. Himiko is afraid she'll be killed or captured but All For One uses Magne's Quirk to send everyone toward Himiko. She's afraid she'll get hurt from the impact, but everyone is drawn to her and they're all sent through a warp gate to safety.

The League of Villains recover in an unspecified apartment where Tomura swears vengeance for his fallen master. Himiko and the others sit in silence after their defeat.

Provisional Hero License Exam Arc
The League of Villains regain their momentum and send Himiko on a mission to infiltrate the Provisional Hero License Exam. She drugs Camie Utsushimi, steals her blood and disguises herself as the Shiketsu High School student.

On the day of the exam, Himiko joins her "classmates" Inasa Yoarashi, Seiji Shishikura, and Nagamasa Mora as they introduce themselves to Class 1-A. Inasa bleeds after apologizing for being rude and Himiko is infatuated by the blood pouring down his forehead.

Toward the middle of the exam's first phase, Himiko confronts Izuku alone. She uses her acrobatic abilities and her stealth to catch him off guard and tags one of his targets. If she can tag all three, Himiko can eliminate Izuku from the exam. Himiko scolds Izuku for zoning out in the middle of a war zone.

Himiko uses her ability to hide her presence to confuse Izuku and dodge his attacks. She sneaks up behind him and pins him to the ground with his arm behind his back. Himiko whispers into his ear and explains her stealth tactics and reveals its not a part of her Quirk. She wants to know why Izuku wants to be a hero but he doesn't answer and breaks free from her hold.

Competitors from Ketsubutsu interrupt the fight and Himiko disappears. She changes into Ochaco and pretends to be in peril so Izuku saves her. When they're safe, Himiko tries to tag another one of Izuku's targets but he sees through her disguise. Caught, Himiko changes back into Camie.

Himiko wants to know what lengths Izuku will go to be a hero. He says he would rather talk after the exam and demands she put some clothes on. Himiko swiftly attacks and scratches Izuku's face. She tries to keep attacking but Ochaco and Hanta arrive to save their classmate. Himiko is forced to retreat and is dismayed she didn't get to talk to Izuku more. She tells Ochaco that Izuku really trusts her and then leaves the area.

Himiko manages to eliminate two students and becomes the 98th person to pass the first phase. She rejoins the Shiketsu students in the anteroom and Nagamasa scolds her for going out on her own. Izuku, Denki Kaminari, and Minoru Mineta stare at her from across the room and Himiko waves at them. This makes Denki and Minoru suspicious of Izuku after Hanta tells them about Camie's naked encounter with him.

Himiko ignores the final phase of the exam and leaves early under the excuse that she wasn't feeling well. She escapes without anyone ever suspecting her and receives a call while walking down an alleyway. The call is from Mr. Compress, who scolds her for not contacting her allies sooner. Himiko claims there's nothing to worry about because she's never been caught. Himiko sheds her Camie disguise and informs Compress that she got some of Izuku's blood.

Shie Hassaikai Arc
Himiko reunites with the League of Villains at a secret unspecified warehouse. Twice brings them a new recruit, the young Yakuza Captain of the Shie Hassaikai: Overhaul. Himiko asks what a Yakuza is and Compress explains they're relics from a time before the age of heroes. Overhaul suggests the League of Villains work for him and they refuse. Magne attacks him but Overhaul abruptly murders her within seconds, shocking Himiko.

Compress attacks and get his Quirk erased, giving Overhaul enough time to completely destroy his left arm. Himiko and the others prepare to fight as Overhaul's followers arrive but Tomura tells them all to stand down.

Tomura meets the Shie Hassaikai later on and agrees to lend them Himiko and Twice. Neither of them accepts this and Himiko confronts her masked leader. She spins around and tells Tomura that she joined the League because it makes her happy and easier to live in the world. Himiko turns her knife to Tomura's neck and demands to know why he would make her do something so unpleasant.

Tomura surprises Himiko by taking off his mask. He says they must do it for his sake and all of theirs. The Shie Hassaikai is trying to overtake the League of Villains and Tomura needs Himiko and Twice to do this to help the League. He trusts them to do their best and the duo is moved by Tomura's words.

Himiko and Twice are brought to the Shie Hassaikai Headquarters where they meet with Overhaul and all his main followers. He asks that they both explain their Quirks but Himiko refuses to because she still hates the Yakuza. Twice agrees but Shin Nemoto uses his Quirk to make Twice confess. This embarrasses Himiko and she explains the details of her Quirk too. Shin uses his Quirk again to ask if Tomura planned on betraying them. Himiko and Twice both deny any plans of betrayal. Overhaul asks that as wanted criminals, both the temps stay on base for the time being.

Sir Nighteye's investigation leads a team of Heroes to the Yakuza hideout. Overhaul orders the temporary Yakuza to hold off the enemy to cover his escape. Himiko and Twice are forced to work alongside Mimic to take down Sir Nighteye's team. Mimic separates the hero squad from one another and Himiko ambushes Rock Lock. She stabs him through his hand but he uses his Quirk to lock her knife in place. Rock Lock punches Himiko but she turns out to be just a clone. The real Himiko wraps herself around Rock Lock's back and stabs him. The Lock Down hero asks why the League of Villains are attacking but Himiko reminds him that she's a Yakuza now and incapacitates him.

Himiko ingests Rock Lock's blood and transforms into him. Izuku and Eraser Head break into the area and Himiko says an imposter attacked her. She gets close to Izuku and Eraser Head notices the knife wounds on Rock Lock's body. He erases Himiko's Quirk and she tries to stab Izuku. He recognizes her, much to her pleasure but Eraser Head uses his Capturing Weapon to pull her away. Himiko wraps herself in the scarf and counterattacks by stabbing him in the shoulder. She gets away and Mimic helps her retreat behind a rock wall.

Twice is forced to retreat as well after Sir Nighteye destroys part of his mask. Himiko stops his panic attack by wrapping the exposed part of his face behind a cloth. She empathizes with him and recognizes that he feels horrible for what happened to Magne. Himiko and Twice remember that Tomura trusted them and they both decide to act freely and to do what makes them feel good. They berate Mimic and the Yakuza for being useless, throwing him into a frenzy.

Mimic starts distorting the cave and tries to crush the villains and heroes alike. Himiko decides to use the heroes to destroy the Yakuza as proper revenge. The heroes can't find Mimic's real body but Himiko knows he's a weakling who looks down on people from above. Mimic gets angry and yells at her, giving the heroes an opening to defeat him. As Mimic falls defeated, Himiko and Twice wave goodbye to their rival villain.

Himiko and Twice get above ground and try to devise a scheme to keep chipping away at the Yakuza. Himiko wants to kill Overhaul herself but figures she won't get the chance. She transforms into Deku and leads Ryukyu's Squad right to Overhaul's battle with Nighteye's squad. They want to try and steal Eri, but the ensuing fight causes too much chaos and they're forced to hide.

Deku defeats Overhaul and the Shie Hassaikai are arrested and transferred toward a villain hospital. Himiko relays this information to Compress and Tomura, who ambush the transport on the highway. Himiko admits that Twice is the one who made the call because she was busy crushing on Izuku. She knows they were unable to capture Eri, but believes the League of Villains can still win by stealing the Quirk-Destroying Drug.

Meta Liberation Army Arc
Prior to the Hero Billboard Chart JP event, the League of Villains is forced to steal money and assets to other organizations due to its lack of resources. One of these organizations is the Creature Rejection Clan, where they end up killing all its members. Himiko notes that one of her needles broke during the fight, but due to the shortage of money, she can not get a new one.

The League returns to their worn-down hideout, where discrepancies begin to appear due to the situation. At that moment, Gigantomachia appears, and Tomura expresses glee as he realizes that this must be the power Kurogiri mentioned to him. However, Gigantomachia challenges the League to see whether they are worthy of his loyalty. Gigantomachia easily crushes the League and tearfully wonders why All For One has recruited weaklings like them.

Afther the confrontation, Daruma Ujiko talks from the Gigantomachia's radio, explaining Tomura and the other members of the League of the situation, to later warping them to their laboratory, to continue the conversation.