Brats like you sure know how to pass the blame. It's no good. I don't really hold a grudge against 'em about my eye. I killed 'em, just like I wanted to. And they tried to stop me. We all did our best and had to deal with the results. What's bad is when you can't put your money where your mouth is... like your dear mommy and daddy!
Goto Imasuji to Kota Izumi about his parents in "Stake Your Life, Hero!"

Goto Imasuji ( (いま) (すじ) (ごう) () Imasuji Gōto?),[3] also known as Muscular (マスキュラー Masukyurā?),[4] later Jailbreaker (ダツゴク Datsugoku?),[2] is a villain affiliated with the League of Villains as part of its Vanguard Action Squad. He and the rest of his squad serve as the primary antagonists of the Forest Training Camp Arc.

He was incarcerated in Tartarus,[5] until he was freed by All For One.[6] He proceeded to go on a spree of destruction.[7] However, after being defeated by Izuku Midoriya, Goto was arrested and imprisoned once again.[8]


Goto is a large, bulky and extremely muscular man set wide with short, spiky blond hair and small black eyes. He has a large scar going across the left side of his face, his left eye replaced with a prosthetic one, and he has another, smaller scar on the right side of his forehead. As of his appearance after the Paranormal Liberation War, Goto's hair has grown longer and has developed stubble all over his chin.

His outfit consists of a black, hooded cloak and a white hockey mask with multiple holes. Underneath this, he wears a red tank top, a dark jacket that hangs around his waist, dark green pants, and black knee-high boots.



Befitting his appearance, Goto has a very sadistic and bloodthirsty personality. He openly admits that he wants to use his Quirk freely to kill. Goto enjoys killing and tormenting those he fights, often saying "show me your blood!". Unlike most of the other members of the Vanguard Action Squad, he joined the League of Villains just to let loose with his brutal tendencies, rather than following Stain's ideology.

Goto's malefic nature.

Even so, Goto does have ideals of his own. He believes that people should deliver on whatever promises they make to others or else their words mean nothing. To him, "right" and "wrong" are determined by one's ability to accomplish their intentions. When he fought Water Hose, he viewed it as a battle of wills between his intent to kill and Water Hose's intent to stop him; as he was victorious, he was right and Water Hose was wrong. Conversely, Goto accepts the loss of his left eye as the result of Water Hose's intent and bears them no ill will for it. He even spoke highly of the heroes to their son.

Goto's signature trait is his overconfidence which later proved to be his greatest flaw. Goto believed himself superior to Izuku Midoriya because his Quirk's augmentation powers were more potent than Izuku's. This superiority complex resulted in Muscular using only part of his power to toy with Izuku. His overconfidence is also what caused him to become distracted during their fight. Izuku was able to land a powerful smash against Muscular on two separate occasions because he allowed himself to be distracted by Kota Izumi.

Despite his ego, Muscular does compliment Izuku's strengths. After getting hit by a full-power smash, Muscular admitted Izuku is powerful and decided to stop holding back. However, this never stopped him from taunting Izuku during their bout.


Muscular easily contends with Izuku Midoriya, a One For All inheritor.

Overall Abilities: Muscular is a very dangerous villain, being one of the strongest members of the League of Villains' Vanguard Action Squad. His incredible combat aptitude allows him to single-handedly overpower, and potentially kill, his adversaries, most notably, Water Hose. Muscular also has a great handle on his Quirk, Muscle Augmentation, which he used to exponentially increase his physical might in parts of his body, or his whole body. By infusing his heightened brawn into his melee combat abilities, Muscular overwhelms his opponents with blurring speeds while delivering heavily reinforced strikes, making him a highly formidable force to face in battle. Though red-blooded, Muscular does sustain some form of injury after a bout, such as his missing left eye caused by his confrontation with Water Hose. Muscular's bloodthirsty nature and battle efficiency earned him the epithet, "The Carnal Murderer".

Muscular unleashes his full power.

During the Vanguard Action Squad Invasion, Muscular was more than capable of repeatedly overpowering Izuku Midoriya, a One For All inheritor who is one of the most powerful students at U.A. High School. When Izuku delivered a 100% Detroit Smash, which is equal to that strength of All Might, Muscular emerged virtually unscathed, albeit at the cost of his tank top and one of his prosthetic left eyes. After the said attack, Muscular revealed that he was holding back a great deal of his might, and decided to fight seriously. At full power, Muscular not only continued to dominate Izuku, but nearly killed him too, even as the young hero employed another 100% "Detroit Smash", had it not been for the intervention of Kota. Kota's actions inspired Izuku to go beyond 100% of One For All in order to overcome Muscular's power and finally defeat the villain. Battling against Izuku indicates that Muscular's overall prowess is enough to contend with someone of All Might's caliber.

After being freed from Tartarus by All For One and Tomura Shigaraki, Muscular went on a rampage and eventually encountered Grand and Turtle Neck, withstanding the vibrating student's "Tremoring Earth" Super Move, but the villain's attempted carnage was halted by the arrival of Deku. However, unlike their first encounter, Muscular was overwhelmed by Deku's new multitude of Quirks and was unable to land a blow on him. As their clash reached its climax, Muscular's muscle tendons sporadically unraveled due to Grand's maximum-output vibrations, leading to a weakened Muscular being soundly defeated by Deku a second time.


Muscular covering his body in muscle fibers.

Muscle Augmentation ( (きん) (にく) (ぞう) (きょう) Kin'niku Zōkyō?): Goto's Quirk allows him to greatly amplify his own muscle fibers, even reaching a point where they can’t be contained by his skin.[9] These enhanced muscle fibers exponentially increase all of Goto's physical abilities to a superhuman level, roughly on par with One For All.

He has also been shown to use his Quirk for defense by covering his whole body in an armor of augmented muscle fibers, protecting him from blunt force and powerful vibrations. Goto can can cover his body in more than 12,000 layers of muscle.[10] It is later shown that many of his muscle fibers can be depleted of energy if Goto takes too much damage, significantly weakening his body.[11]

  • Immense Strength: Thanks to his Quirk, Goto exhibits monstrous levels of physical strength. Even when holding back, he is able to shatter rock and overpower Izuku with minimal effort, such as sending the young hero flying with remarkable force with a mere kick. When fighting seriously, Goto's reinforced strikes were able to cause destruction on a scale to similar to Izuku's 100% "Detroit Smash". He was also able to directly overpower Izuku, who was using One For All at 100% at the time, in a physical clash. After being freed from prison, Goto demonstrated the capacity to destroy buildings, whether its by jumping from them, ramming them, or using his bare hands. Even while weakened by Grand's "Tremoring Earth", he displayed enough strength to lift and throw the top of a building with ease.
  • Immense Durability: Goto possesses a frightening level of resistance to physical harm. He was able to take the full brunt of Izuku's 100% "Detroit Smash", which is on the same level as All Might's power, with minimal injury. However, he was incapacitated only after Izuku went beyond his limit with One For All. Even after the battle, Goto was shown fully awake, and fighting with his restraints while Izuku was in a coma. As shown when he escapes from Tartarus, his enhanced muscle fibers are also able to bear the brunt of gunfire, as well as remain undamaged when crashing through skyscrapers. His remarkable durability was again demonstrated when he withstood Grand's "Tremoring Earth" at point-blank range, and received very minimal damage. Shortly after however, Goto's muscle fibers started to unravel, allowing Deku to finish the weakened villain.[11]
  • Immense Speed: Goto has shown to be surprisingly swift despite his large bulk. With the increased muscle mass in his legs, Goto is able to launch himself off the ground at blurring speeds. When he battled Izuku, Goto caught him off-guard several times, making Izuku realize that running away was not an option; Goto would overtake him and Kota in seconds, especially since Izuku was exhausted from training that day.


5/5 A
5/5 A
2/5 D
1/5 E
1/5 E
Goto Imasuji's stats, according to the Ultra Archive Book

6/6 S
5/6 A
1/6 E
1/6 E
Desire to Kill
6/6 S
Goto Imasuji's stats, according to the Ultra Analysis Book


Prosthetic Left Eyes: Goto keeps a small collection of replacement eyes in his left pocket in case his regular one is damaged or loosened from its socket. Each one sports a unique design. Goto picks a replacement depending on his current mood.[12]

Battles & Events

Battles & Events

Chapter Appearances

Forest Training Camp Arc
70. Wild, Wild Pussycats Absent
71. Kota Mentioned
72. Day Two Debut
73. Good Evening Appears
74. Smoke Signal Appears
75. Stake Your Life, Hero! Appears
76. My Hero Appears
77. It's Okay Appears
78. Whirling Chaos Pictured
79. Drive It Home, Iron Fist!!! Absent
80. Establishing the Bakugo Bodyguard Brigade Absent
81. Roaring Upheaval Appears
82. What a Twist! Absent
83. Loss Appears
Provisional Hero License Exam Arc
98. Moving into Dorms Absent
99. Goodbye Two-Digit Chapters, Hello Three Digits Absent
100. Creating Ultimate Moves Absent
101. The Girl Called Mei Hatsume Flashback
102. On Cloud Nine Absent
103. The Test Absent
104. White-Hot Battle! To Each Their Own Strengths! Absent
105. Shiketsu High Lurking Absent
106. Class 1-A Absent
107. Denki Kaminari's Thoughts Absent
108. RUSH! Absent
109. Rescue Exercise Absent
110. Rescue Exercise Continued Absent
111. Smoldering Start Absent
112. What's the Big Idea? Absent
113. Test's Aftermath Absent
114. Result's Aftermath Absent
115. Unleashed Absent
116. Meeting in Tartarus Absent
117. A Talk About Your Quirk Absent
118. Meaningless Battle Absent
119. Deku vs. Kacchan, Part 2 Absent
120. The Three Flashback
121. Second Semester Opening Ceremony Absent
Shie Hassaikai Arc
122. A Season for Encounters Absent
123. Unrivaled Absent
124. Trouble Ahead!! Episode: Work Studies Absent
125. Overhaul Flashback
126. Open Up, World Absent
127. Sir Nighteye and Izuku Midoriya and Mirio Togata and All Might Absent
128. Boy Meets... Absent
129. Eri Absent
130. Listen to the Truth Absent
131. Fighting Fate Absent
132. The Plan Absent
133. Catch Up, Kirishima Absent
134. Let's Go, Gutsy Red Riot Absent
135. An Unpleasant Talk Absent
136. Close at Hand!! Absent
137. Restraint!! Absent
138. Go!! Absent
139. Shudder! The Underground Labyrinth Absent
140. Suneater of the Big Three Absent
141. Hassaikai: Behind the Scenes Absent
142. Shield and Shield, Spear and Shield Absent
143. Let’s Rumble, Rappa!! Absent
144. Red Riot, Part 1 Absent
145. Red Riot, Part 2 Absent
146. Temp Squad Absent
147. Twoga!! Absent
148. The Anguish of Young Twoga Absent
149. Don't Get Mad, Irinaka Absent
150. Mirio Togata Absent
151. Mirio Togata!! Absent
152. Lemillion Absent
153. Transform! Absent
154. Unforeseen Hope Absent
155. Saviors, the Saved and a Hero's Place Absent
156. The Power of Those Saved Absent
157. Infinite 100 Percent Absent
158. Chisaki's Warped Compassion Absent
159. It's Over!! Absent
160. Expressway Absent
161. Bright Future Absent
162. Suitable One Absent
Paranormal Liberation War Arc
253. Shirakumo Absent
254. You Could Be More of a Hero than Anyone Absent
255. Hero Hopeful Absent
256. The High, Deep Blue Sky Absent
257. Pass It Forward, to Whomever Absent
258. Friends Absent
259. A Quiet Beginning Absent
260. Life's Work Absent
261. High-Ends Absent
262. Mirko, the No. 5 Hero Absent
263. I Wanna Be With You Guys!! Absent
264. One's Justice Absent
265. Villains and Heroes Absent
266. Happy Life Absent
267. Flames Absent
268. Scramble! Absent
269. The Three of Us Absent
270. Inheritance Absent
271. Dark Cloud Absent
272. Good Morning! Absent
273. The Thrill of Destruction Absent
274. Search Absent
275. Encounter, Part 2 Absent
276. You Cheated...! Absent
277. Who...? Absent
278. Disaster Walker Absent
279. League of Villains vs. U.A. Students Absent
280. Red Riot, Part 3 Absent
281. Plus Ultra Absent
282. Footfall of Destruction Absent
283. 75 Absent
284. Deep Blue Battle Absent
285. Katsuki Bakugo Rising Absent
286. The Ones Within Us Absent
287. Mistake Absent
288. Save Takeo!! Absent
289. Miss Candid and Miss Shut-Away Absent
290. Dabi's Dance Absent
291. Thanks For Going Strong Absent
292. Threads of Hope Absent
293. Hero-Saturated Society Absent
294. Final Performance Absent
295. Tenacious Absent
296. Hellish Hell Absent
297. Tartarus Appears
298. Sounds of Collapse Absent
299. Like Those Tragic Tales Absent
300. The Hellish Todoroki Family, Part 2 Shadow
301. The Wrong Way To Put Out A Fire, Part 1 Absent
302. The Wrong Way To Put Out A Fire, Part 2 Absent
303. Top Three Absent
304. Izuku Midoriya and Toshinori Yagi Absent
305. Izuku Midoriya and Tomura Shigaraki Flashback
306. The Final Act Begins Absent


  • Muscular's English voice actor, Jim Foronda, also voices Tsutsutaka Agoyamato.
  • Muscular's surname contains the kanji for "now" ( ima?) and "muscle fiber" ( suji?), and his first name contains "strong" ( ?), and the kanji for the Big Dipper ( to?).
    • The "masu" in his surname is homophonous with part of the Japanese pronunciation of the English word "muscle" (マッスル massuru?).


  • (To Izuku about Kota) "Haa ha ha! Blood! Love it. So fun! What was that, again? You're gonna save him, right?! So why're you running?! That's a weird way to save someone!!"[9]
  • (To Izuku) "My Quirk's a muscle enhancer. These muscle fibers of mine can't be contained even by my skin. They raise the standard in speed!! And power!! Get what I'm saying?! You're nothing inferior version of me! You understand where I'm coming from?! I can't help but laugh!"[9]
  • (To Kota about his parents) "Brats like you sure know how to pass the blame. It's no good. I don't really hold a grudge against 'em about my eye. I killed 'em, just like I wanted to. And they tried to stop me. We all did our best and had to deal with the results. What's bad is when you can't put your money where your mouth your dear mommy and daddy!"[9]
  • (To Izuku when asked about the League of Villains' goal) "Like I care. All I wanna do is rampage. As long as I get to use my Quirk without holding back, I'm good."[12]


  1. My Hero Academia Manga: Chapter 125.
  2. 2.0 2.1 My Hero Academia Manga: Chapter 307 (p. 7).
  3. My Hero Academia Manga: Chapter 308 (p. 13).
  4. My Hero Academia Manga: Chapter 78 (p. 4).
  5. My Hero Academia: Ultra Analysis: The Official Character Guide.
  6. My Hero Academia Manga: Chapter 297 (p. 17).
  7. My Hero Academia Manga: Chapter 307.
  8. My Hero Academia Manga: Chapter 309.
  9. 9.0 9.1 9.2 9.3 My Hero Academia Manga: Chapter 75.
  10. My Hero Academia Manga: Chapter 307 (p. 13-15).
  11. 11.0 11.1 My Hero Academia Manga: Chapter 308.
  12. 12.0 12.1 My Hero Academia Manga: Chapter 76.

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