Jin Bubaigawara/Synopsis

Forest Training Camp Arc
Twice joins the other members of the Vanguard Action Squad as they look down at the camp where the U.A. High students are staying. [4]

The Vanguard Action Squad attacks the training camp on the night of the third day, filling the forest with poisonous gas and fire. After Dabi's clone is defeated by Shota Aizawa, Twice begins to insult Dabi's clone saying that he was weak. However, when the real Dabi appears, Twice quickly retracts what he said and begins to praise him, though Dabi appears not to notice his previous insult. Dabi then orders him to make two clones of him so that he can resume his fight, and Twice happily complies. [2] He sends the Dabi clone to attack the students at the camp facility, serving as a distraction for the Pro Heroes Sekijiro Kan and Shota. [5]

Eventually, Mr. Compress manages to capture Katsuki Bakugo and informs Dabi along with the rest of the Vanguard Action Squad. At the rendezvous point Dabi notes that their only action now is to wait for their fellow villains. However, he states that there are no gas or walls of fire to make the escape better. He relents and accepts that plans do not always go accordingly, and looks at the bush Yuga Aoyama is hiding behind, much to Yuga's fear. Dabi prepares to go and check but is stopped after Twice informs him that they must also call back Nomu since it only responds to Dabi. [6]

Dabi and Twice wait for their fellow villains to reach the rendezvous point. When Himiko Toga arrives, Dabi asks how her mission went, and she replies that she could get the blood of only one person. Twice is unimpressed and wonders why Himiko is excited, to which Himiko replies that she found a boy she is interested in. As Himiko and Twice converse, Dabi orders them to keep quiet. Dabi sees something approaching them; Izuku Midoriya, Mezo Shoji, and Shoto Todoroki smash Atsuhiro onto the ground and then apprehend him. Dabi is seemingly displeased while Twice contradicts his knowledge about the identity of the Heroes. [7]  After Dabi attacks with his flames, Twice appears behind Shoto and attempts to attack him, only for Shoto to block him with ice, which sends Twice reeling. Twice gets back up and tries attacking again, but Shoto holds him back. Soon, Kurogiri arrives in order to retrieve the Vanguard Action Squad. Twice stops his battle with Shoto, jumping into Kurogiri's Warp Gate and successfully teleporting away from the training camp. [8]

Hideout Raid Arc
After completing the mission, Twice is present when Tomura Shigaraki talks to the restrained Katsuki inside the League of Villains' hideout. [9]

After Katsuki and the League of Villains watch a video clip of U.A.'s public apology, Tomura understands why society is criticizing U.A. for their failure and that is because the current Hero society is not just. Spinner agrees that the current Hero society is not just since the modern Heroes are only doing their job for compensation and not out of selflessness. Tomura explains that the League of Villains are fighting for a just society and intends to win this battle. Tomura orders Dabi to remove Katsuki's restraints, although Dabi is unsure since Katsuki might attack; Tomura wants to treat Katsuki as an equal and is aware that Katsuki knows he has no possibility of winning. Dabi has Twice remove the restrains. As Twice removes the restrains, Mr. Compress apologizes to Katsuki for forcibly kidnapping him and explains that the League of Villains are not just a group of hoodlums perpetuating crimes nor did they casually abduct him; he goes on by saying that everyone in the League of Villains is shackled by the current society and hopes that Katsuki understands their discrimination.

Katsuki's restraints are removed. As Tomura approaches him, Katsuki attacks Tomura with his Explosions and tells the League of Villains that it is pointless to try and make him change his mind as he has already been won over by the way All Might looks when he wins. Katsuki says that from the beginning he has dreamed of becoming a Hero and surpassing All Might and nothing they say will change that. [10]

Suddenly, All Might breaks in while Kamui Woods swings in and restrains Twice and the other League of Villains with his Lacquered Chains Prison. [11]

Suddenly, Artificial Humans appear from a mysterious back liquid which takes the Pro Heroes off guard. Twice along with the League of Villains are teleported by the mysterious black liquid to the League of Villains' destroyed warehouse where All For One is. [12]

All For One forcefully activates Kurogiri's Quirk, creating a portal for the League of Villains to escape through. Seeing that Katsuki will not willingly go with them, Twice, Mr. Compress, and Himiko battle Katsuki, who fends them off with Explosions. [13]

After Katsuki is rescued by Izuku, Tenya, and Eijiro, Mr. Compress along with Magne and Spinner hatch a plan to recapture Katsuki. Magne magnetizes Mr. Compress and Spinner pushes him, causing Mr. Compress to fly at Izuku's group. Suddenly, Mt. Lady uses Titan Cliff and intercepts Mr. Compress, which causes them to smash into each other, preventing Mr. Compress from getting to the students. Magne and Spinner prepare to throw Twice, but Gran Torino blitzes them, knocking them unconscious.

The unconscious Twice along with Tomura and the Vanguard Action Squad are magnetized by Kenji's Quirk, courtesy of All For One; Twice is forcefully sucked into Kurogiri's Warp Gate and is teleported away. [14]

Two weeks after the battle between All Might and All For One, Twice recovered and the League of Villains scattered to prevent the Heroes and the Police Force from finding them. Twice began living in an apartment in Kanagawa Prefecture. He goes outside and witnesses a crime committed by Team Reservoir Dogs. Giran calls and informs Twice that Tomura wants the League of Villains to gather once more, warning Twice not to do anything crazy. After the phone call ends, Twice begins to start splitting into two but stops this by putting a mask over his face. He looks back at the crime scene only to find that another group of villains has defeated Team Reservoir Dogs. Twice wonders what he should do now. [15]

Internship Arc
Twice leads Overhaul to a meeting with the League of Villains. He is later shocked when Overhaul kills Magne.

When Overhaul's subordinates arrive, Twice is and notes that he made sure that he was not being followed by anyone, though Tomura assumes that it must be part of someone's Quirk. He holds an injured Atsuhiro and tells Overhaul that he will kill him. As Overhaul leaves the scene, a furious Twice asks Tomura to let him take responsibility, only for Tomura to deny him.

In his meeting with Tomura, Overhaul requested Himiko and Twice to join as temporary members, [16] and later has the two impede the heroes infiltrating the headquarters. [17] Twice made a clone of Himiko, which she used to attack Rock Lock who destroyed it. [18] After Joi Irinaka separates the heroes, Twice and a clone of Rappa confront Sir Nighteye. [19] However, Nighteye throws a special weighted stamp at the clone to quickly defeat him, and tries the same with Twice, though he only manages to tear a part of his mask off.

Soon after, he abandons the fight in distress, revealing that without anything to cover his face, his personalities start to struggle for control of his body. Luckily, Himiko arrives soon and wraps a bandage around his head. They both start complaining about the yakuza, causing Joi's rage. Joi proceeds to warp the basement again, allowing them to escape.