

Mustard then hides back into his gas, warning Itsuka not to get overconfident about her Quirk. She then strikes him by using her Quirk, knocking him back a bit. Itsuka tries to attack Mustard, but he managed to avoid her attack, due to his senses. He mocks Tetsutetsu for being a simple minded fool that just rushes into action with no strategy, and questions how someone like him could possibly live up to be a hero. As he continues to fight, Mustard notices that Tetsutetsu's Quirk is slowly beginning to get weaker, meaning that it was only a matter of time for Tetsutetsu to fall asleep. He then hides into his gas, in which Tetsutetsu attempts to find him, only to be shot in the head once more. He begins to explain how his Quirk works, in which he can sense movements through his gas, due to it being his own creation. students at how much of a simple plain they had. He then attempts to shoot Itsuka Kendo, but Tetsutetsu took the hit in his head. Regardless, Mustard continues to shoot him, while at the same time mocking him for using the same tactic over and over. Although the bullet destroyed his mask, Tetsutetsu himself was not injured, due to his Quirk. Immediately, Tetsutetsu Tetsutetsu charges towards him, but then gets shot by Mustard's gun. Instead, he pulled out his gun, ready to shoot with no mercy. Despite this, he was not concerned about the situation.

Eventually, he stopped in his tracks, as he could sense multiple individuals were coming towards him. After knocking out Juzo Honenuki with his Quirk, Mustard began to move forward in the forest. The next night, the team began to attack the camp, with Mustard going on his own by spreading his gas in the forest.

Himiko then complains about how her mask doesn't look cute, in which Mustard replies by telling her that doesn't matter, but instead its function does. Growing impatient, Muscular wanted to get into the action, but Mustard reminds him that there is no need to rush in. students at their training camp, planning their attack. Later on, he joined the League of Villains and took part in the Vanguard Action Squad, where he (along with Muscular, Dabi and Himiko Toga) watch the U.A. After Stain's arrest, his ideology spread around, influencing the villains into committing further crimes. Mustard first appears in The Aftermath of Hero Killer: Stain. He also states that no matter how powerful a person’s Quirk is, it doesn’t change the fact that they’re still human.īecause of his jealousy towards U.A., he has shown signs of arrogance when constantly mocking Tetsutesu's simple mind and bragging about his own skill with his Quirk, which ultimately led to his own downfall. He believes that equipment’s function is more important over it looking stylish or cute, and chastised Himiko Toga for believing otherwise. His ruthlessness aside, Mustard does the prove to have some tactical intellect and a degree of pragmatism. He also seems to be very merciless and cruel, as shown when he shot at Tetsutetsu with his gun and showed no hesitation at all while doing so. students, and how they're treated and pampered by society due to the school's popularity. He does seem to hold some sort of jealousy towards U.A. While not much is known about Mustard in terms of background, as to how or why he became a villain.
