My Hero Academia Wiki
My Hero Academia Wiki
You're getting a top-notch education at a famous school. At least use some strategy. If not... you're barely worth killing.
Mustard to Tetsutetsu Tetsutetsu in "Drive It Home, Iron Fist!"

Mustard (マスタード Masutādo?) is a C-rank villain affiliated with the League of Villains and a member of the organization's Vanguard Action Squad. He and the rest of his team serve as the main antagonists of the Forest Training Camp Arc.


Mustard is a skinny young man with short, wavy, light brown hair, tan skin and brown eyes. He wears a black gakuran school uniform along with teal gloves and white shoes. Mustard sports a green gas mask that completely covers his face, attached to two oxygen tanks that he carries on his back.



Mustard has been shown to be pragmatic. He believes that it is very important to wait until the right time before striking. He believes that function is more important than style when it comes to support gear and he scolded Himiko Toga for thinking otherwise. He believes that no matter how impressive a person's Quirk is, it doesn't change the fact that they're still only human.

Mustard being merciless, kicking Tetsutetsu while he's down and can't breathe.

He has also been shown to be exceptionally merciless. He brought a gun to the Vanguard Action Squad's raid on the forest training camp and tried to kill both Tetsutetsu and Itsuka with it.[1]

Mustard seems to bear jealousy and resentment towards U.A. students, as he constantly mocked Itsuka Kendo and Tetsutetsu Tetsutetsu for being "pitifully simple", calling them too straightforward and lamenting how they are "pampered by the world" due to their school's reputation alone.[2] He claims that such things are what's wrong with the world.

He is very proud of himself, his Quirk, his skills, and his accomplishments. Because of this, he has a tendency to boast.


Overall Abilities: Mustard is a capable villain because of his intelligence. He has a good grasp on the capabilities of his Quirk and was able to use them to compete with two U.A. students in a fight at the same time. However, Mustard is not a strong combatant without the use of a weapon and his quirk. He does not seem to possess any hand-to-hand combat skills and relies on the use of his gun to inflict damage.

Skilled Marksmanship: Mustard appears to be a proficient marksman, able to destroy Tetsutetsu's mask with a single, precise shot. His ability to sense the location of enemies within the gas he creates assists his targeting.


Mustard producing toxic gas.

Gas (ガス Gasu?): Mustard's Quirk allows him to generate a vast typhoon of sleep-inducing gas. He is also able to detect any movement within the gas by reading its fluctuation.

Mustard has to continually produce the gas and it will quickly disappear if he stops. He is also not immune to his own gas and needs to wear a gas mask in order to use it.


1/5 E
1/5 E
4/5 B
3/5 C
2/5 D
Mustard's stats, according to the Ultra Archive Book

1/6 E
1/6 E
4/6 B
3/6 C
Attack Range
5/6 A
Mustard's stats, according to the Ultra Analysis Book


Mustard's revolver.

Gas Mask: Mustard wears a green gas mask attached to an oxygen tank. He carries the tank on his back and uses the mask to protect himself from the effects of his own quirk.

38 Revolver: Mustard carries a small handgun and bullets with him.

Battles & Events

Battles & Events

Chapter Appearances

Vs. Hero Killer Arc
45. Time to Pick Some Names Absent
46. Bizarre! Gran Torino Appears Absent
47. Struggling Absent
48. Getting the Knack Absent
49. Midoriya and Shigaraki Absent
50. Kill 'Em Dead Absent
51. No, Knock It Off, Ida Absent
52. Hero Killer Stain vs. U.A. Students Absent
53. From Todoroki to Ida Absent
54. Re: Ingenium Absent
55. Conclusion?! Absent
56. Conclusion Absent
57. The Aftermath of Hero Killer Stain Debut
58. Internship's End Absent
59. Listen Up!! A Tale from the Past Absent
Forest Training Camp Arc
70. Wild, Wild, Pussycats Absent
71. Kota Absent
72. Day Two Appears
73. Good Evening Appears
74. Smoke Signal Appears
75. Stake Your Life, Hero! Absent
76. My Hero Absent
77. It's Okay Flashback
78. Whirling Chaos Appears
79. Drive It Home, Iron Fist!!! Appears
80. Establishing the Bakugo Bodyguard Brigade Absent
81. Roaring Upheaval Appears
82. What a Twist! Absent
83. Loss Appears
Hideout Raid Arc
84. From Ida to Midoriya Absent
85. Nothing but Fools Absent
86. Before the Storm Mentioned
87. Clash Absent
88. All For One Absent
89. All for a Certain One Absent
90. Reach Out Absent
91. Symbol of Peace Absent
92. One For All Absent
93. One For All's Ember Absent
94. From Teacher to Disciple Absent
95. End of the Beginning, Beginning of the End Absent
96. Home Visits Absent
97. Tell It Like It Is, Mom Absent
U.A. Traitor Arc
335. Zygotes Absent
336. Villain Flashback
337. A Disposable Life Absent
338. The Story of How We All Became Heroes, Part 1 Absent
339. The Story of How We All Became Heroes, Part 2 Absent
340. The Story of How We All Became Heroes, Part 3 Absent
341. The Story of How We All Became Heroes, Part Minus 1 Absent
342. The Extreme Quiet Before the Storm Absent

Anime Appearances

Season 2
14. That's the Idea, Ochaco Absent
15. Roaring Sports Festival Absent
16. In Their Own Quirky Ways Absent
17. Strategy, Strategy, Strategy Absent
18. Cavalry Battle Finale Absent
19. The Boy Born with Everything Absent
20. Victory or Defeat Absent
21. Battle on, Challengers! Absent
22. Bakugo vs. Uraraka Absent
23. Shoto Todoroki: Origin Absent
24. Fight on, Ida Absent
25. Todoroki vs. Bakugo Absent
26. Time to Pick Some Names Absent
27. Bizarre! Gran Torino Appears Absent
28. Midoriya and Shigaraki Absent
29. Hero Killer: Stain vs U.A. Students Absent
30. Climax Absent
31. The Aftermath of Hero Killer: Stain Debut
32. Everyone's Internships Absent
33. Listen Up!! A Tale from the Past Absent
34. Gear up for Final Exams Absent
35. Yaoyorozu: Rising Absent
36. Stripping the Varnish Absent
37. Katsuki Bakugo: Origin Absent
38. Encounter Absent
Season 3
39. Game Start Absent
40. Wild, Wild Pussycats Appears
41. Kota Appears
42. My Hero Absent
43. Drive It Home, Iron Fist!!! Appears
44. Roaring Upheaval Appears
45. What a Twist! Appears
46. From Ida to Midoriya Absent
47. All For One Mentioned
48. Symbol of Peace Absent
49. One For All Absent
50. End of the Beginning, Beginning of the End Absent
51. Moving into Dorms Flashback
52. Create Those Ultimate Moves Absent
53. The Test Absent
54. Shiketsu High Lurking Absent
55. Class 1-A Absent
56. RUSH! Absent
57. Rescue Exercises Absent
58. Special Episode: Save the World with Love! Absent
59. What's the Big Idea? Absent
60. A Talk about Your Quirk Absent
61. Deku vs. Kacchan, Part 2 Absent
62. A Season for Encounters Absent
63. Unrivaled Absent
Season 4
64. The Scoop on U.A. Class 1-A Absent
65. Overhaul Absent
66. Boy Meets... Flashback
67. Fighting Fate Absent
68. Let's Go, Gutsy Red Riot Absent
69. An Unpleasant Talk Absent
70. GO!! Absent
71. Suneater of the Big Three Absent
72. Red Riot Absent
73. Temp Squad Absent
74. Lemillion Absent
75. Unforeseen Hope Absent
76. Infinite 100% Absent
77. Bright Future Absent
78. Smoldering Flames Absent
79. Win Those Kids' Hearts Absent
80. Relief for License Trainees Absent
81. School Festival Absent
82. Prepping for the School Festival Is the Funnest Part Flashback
83. Gold Tips Imperial Absent
84. Deku vs. Gentle Criminal Absent
85. School Festival Start!! Absent
86. Let It Flow! School Festival! Absent
87. Japanese Hero Billboard Chart Absent
88. His Start Absent
Season 5
89. All Hands on Deck! Class 1-A Absent
90. Vestiges Absent
91. Clash! Class A vs. Class B! Absent
92. Make It Happen, Shinso! Absent
93. Operation New Improv Moves Flashback
94. Foresight Absent
95. Match 3 Absent
96. Match 3 Conclusion Absent
97. Early Bird! Absent
98. That Which Is Inherited Absent
99. Our Brawl Absent
100. The New Power and All For One Absent
101. Have a Merry Christmas! Absent
102. Off to Endeavor's Agency! Absent
103. One Thing at a Time Absent
104. Long Time No See, Selkie Absent
105. The Hellish Todoroki Family Absent
106. The Unforgiven Absent
107. More of a Hero Than Anyone Absent
108. My Villain Academia Absent
109. Revival Party Absent
110. Sad Man's Parade Absent
111. Tenko Shimura: Origin Absent
112. Tomura Shigaraki: Origin Absent
113. The High, Deep Blue Sky Absent


  • His villain name comes from Sulfur mustard, better known as "Mustard Gas", which was infamously deployed in World War I and is further referenced by his mask and helmet taking inspiration from the era.
  • Mustard's mask and helmet design may be a reference to Oshii Mamoru's Kerberos saga, itself taking inspiration from German World War 1 & 2 gear such as the Stahlhelm.
  • Mustard's Japanese voice actor, Kiyotaka Furushima, also voices Hanta Sero.
  • Mustard's English voice actor, Daman Mills, also voices Moonfish, Hood, and the Chainsaw Nomu.
  • He is currently the only member of the Vanguard Action Squad whose fate following his arrest after the training camp invasion remains unknown.


  • (To Tetsutetsu) "Coming at me like the Terminator, huh? And why're you just charging in like a madman? Give me a break. You're getting a top-notch education at a famous school. At least use some strategy. If're barely worth killing."[3]
  • (To Tetsutetsu and Itsuka) "Bwa ha ha ha! It's two-on-one, so one of you decided to hide for a sneak attack?! Ha ha ha! Simple. Pitifully simple. I'm creating this gas and controlling it!! Every move you make...creates ripples and tells me where you are! There's no hiding from me!! Why's that so unthinkable to you? You're from U.A., so show me something more! I guess I'll forgive you for an attack like that..."[3]
  • (To Tetsutetsu) "Hey...aren't you supposed to be heroes someday? It doesn't make much sense to a simpleton like you gets praised because of your school's're pampered by the world just because of your alma mater!! Don't ya think it's not right?!"[3]


  1. My Hero Academia Manga and Anime: Chapter 78 and Episode 43.
  2. My Hero Academia Manga and Anime: Chapter 79 and Episode 43.
  3. 3.0 3.1 3.2 My Hero Academia Manga: Chapter 79.

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