We're just a bit fanatical when it comes to our values. All we wish is to show him that there are other ways. Because you kids today... you have your values chosen for you.
Atsuhiro Sako to U.A. students, in "A Critical Emergency Situation"

Atsuhiro Sako ( (さこ) (あつ) (ひろ) Sako Atsuhiro?), also known as Mr. Compress (Mr. (ミスター) コンプレス Misutā Konpuresu?), is a villain affiliated with the League of Villains and was a member of the organization's Vanguard Action Squad. A nationwide wanted thief,[1] he is seen as one of the more 'experienced' members of the league. He and the rest of his team serve as the main antagonists of the Forest Training Camp Arc.

He later became one of the nine lieutenants of the Paranormal Liberation Front, an organization formed from the remnants of the League and the Meta Liberation Army.

Mr. Compress currently serves as a commander for the "Vanguard Action Support Regiment: Brown" along with Spinner.[2]


Atsuhiro is a tall, slim man with pale skin and brown eyes that are semicircular, and slanted a little inwards, and a notably pointed nose. He wears a combination of a mask, balaclava, and hat. Due to this, his hair has never been seen.

In his villain attire, he wears a dark orange shirt, the collar left upturned and a green striped bolo necktie with an oval-shaped azure brooch hanging around his neck, a black waistcoat and black dress pants. He wears knee-high white boots with wedged heels and black toe-caps, plain dark red gloves and a tall brown top hat, a red ribbon tied around it and a pale feather sticking out on the left side.

Over his head, he wears a black balaclava with a hole for his mouth as well as his eyes, over which he wears one of multiple white masks he owns, each with a different black geometric design. In his first appearance, he also wears a dark yellow, double-breasted overcoat with buttoned shoulder tabs and a high collar, which reaches below his knees, and a silver walking stick with a gold handle.

After Overhaul destroys his left arm, Giran gives him a replacement prosthetic which he wears from then on.



Mr. Compress boasting his trickery.

Mr. Compress is a showman at heart who likes to command every event he's a part of and be as flashy and entertaining as possible. He is talkative, humorous and arrogant with his allies and enemies alike.

Mr. Compress has a habit of monologuing and showing off his entertainer skills. This has proven to be a flaw in his skills as a villain; he allowed the Bakugo Escort Squad to catch him because he spent so much time taunting them. Mr. Compress also nearly lost possession of Katsuki Bakugo after taking a moment to bow after his victory.[3] 

Mr. Compress is often the voice of reason among the League of Villains and appears to care for his comrades; he acts as a mentor to the younger members and often keeps them in check. After Magne's death, he immediately leaps into action and tried to subdue Overhaul by himself. This action cost him his arm, but Compress is quick to get his revenge by destroying Overhaul's arm later on. 


Atsuhiro demonstrates his creative Quirk handling.

Overall Abilities: Atsuhiro is very capable and resourceful villain, with incredible stealth abilities, coupled with speed, agility, and the proficiency with his Compress Quirk. Compress is primarily useful when it comes to setting traps. If Atsuhiro has some marbles containing certain compressed objects, he can use those as a way to obstruct the path of enemies, after throwing said marbles at their direction and returning them to their original size. Thanks to Atsuhiro's creativity and ingenuity, he is able to take advantage of the canceling property of his Quirk to affect the environment around him, like placing a marble holding a compressed large rock below a car, and then launch the vehicle into mid-air through the marble's uncompression process. In another offensive manner, Atsuhiro uses his Quirk to selectively compress only one part of a person's body, severely maiming, or sometimes, killing them. Compress also works as a way to dig through solid objects, making Atsuhiro pivotal for escaping enclosed areas. as well as breaking into them. Using Compress on himself allows Atsuhiro to be carried anywhere, undetected. He often uses his Quirk to capture people within compressed marbles without being noticed, and before the victim can alert nearby allies.

During the Vanguard Action Squad Invasion, Atsuhiro activated his Quirk, that requires physical contact, on Katsuki Bakugo and Fumikage Tokoyami while they were in a group of 5 people, among which was Mezo Shoji, whose Dupli-Arms Quirk grants the latter enhanced senses, demonstrating the efficiency of Atsuhiro's stealth capabilities. Overall, Atsuhiro singlehandedly captured the former two students before their classmates noticed, and was only caught when the masked villain made his presence known. Succeeding in the Vanguard Action Squad's mission and making his escape, Atsuhiro easily outpaced the U.A. pursuers in the Beast's Forest by jumping across the treetops and even evaded Shoto Todoroki's multiple employments of his "Heaven-Piercing Ice Wall" technique. While he did evade the trailing students, Atsuhiro was taken by surprise when Mezo, Shoto, and a battle-worn Izuku Midoriya crashed him into the ground. In the course of the Kamino Incident, Atsuhiro, along with Himiko Toga and Twice, forced Katsuki on the defensive, before he was rescued by his classmates. With Magne's help, Atsuhiro was nearly successful at recapturing Katsuki, only to be intercepted by Mt. Lady, knocking out the airborne villain.

When the League of Villains encountered Overhaul, who had killed Magne during the exchange, Atsuhiro was fast enough to catch him off-guard, and make an attempt at capturing the yakuza leader. His efforts were wasted because he was struck by an experimental Quirk-Destroying Bullet, temporarily erasing Astuhiro's Quirk, leading to his left arm being destroyed by Overhaul. Much later, Atsuhiro incapacitated Snatch, by circling around and touching the sand hero, while the latter was fighting Dabi. By compressing the flame-engulfed Pro Hero, the two villains effectively defeated and killed Snatch. At the Revival Celebration, Atsuhiro faced various members of the Meta Liberation Army, but began to struggle until he was saved by Twice's "Sad Man's Parade" technique. After the Revival Celebration, Atsuhiro became a lieutenant of the now unified Paranormal Liberation Front.

Keen Intellect: Atsuhiro is an ingenious villain who thrives in a supporting role. He can act as the brains of an operation as well as act efficiently on his own. Being a former stage magician, Atsuhiro is a self-proclaimed master of deception, escapology, and illusion. True to his words, Atsuhiro employs many creative tactics in combination with his Compress Quirk in order to mislead his opponents. A key example of this misdirection is when he compresses a targets into a marble and there is a chance he would be relived of them by his opponents. Exceptionally cautious with his captives, Atsuhiro utilizes his illusionist skills to sneakily create decoy marbles and swap them around with the ones holding the actual targets, thus deceiving anybody who attempts to steal from him. Atsuhiro also has good judgement, as knows the limits of his own abilities, and can gauge the level of strength another person has after seeing them in action once. He decided against fighting hero candidates from U.A. High School, and decided to make a hasty retreat.

When the Bakugo Escort Squad caught up to him, and seemed successful at reclaiming the captured Katsuki and Fumikage, Atsuhiro flawlessly tricked his pursuers into thinking the marbles in his pockets were the ones housing Katsuki and Fumikage. In reality, those were actually decoys containing ice he had discreetly prepared while dodging Shoto’s ice assault, and Atsuhiro kept the original marbles in his mouth. Once the Hideout Raid Team appeared at the villains' bar, Atsuhiro realized that the televised press conference was being used a ruse for the team of heroes to get the drop on the League of Villains. During the Revival Celebration, Twice attempted to make clones of Dabi and Astuhiro, but the latter villain refuted the notion, pointing out that if all of the M.L.A members and Deika City are destroyed, then the League of Villains won't have the fodder necessary to hold off Gigantomachia once the behemoth arrives in the town.


Mr. Compress using his Quirk on an unconscious Dabi

Compress ( (あっ) (しゅく) Asshuku?): Atsuhiro's Quirk allows him to "compress" anything in a spherical area around his arm into a small, marble-like object without actually damaging it.

The weight of the target is reduced alongside them, making them very easy to carry. If used on a person, it effectively entraps them, terminating the fight instantly and allowing Mr. Compress to abduct them without difficulty.

The Quirk can also be used on select body parts, maiming the target.[4]

Atsuhiro's Quirk Factor lies within his arms, and after losing his left arm to Overhaul, Compress's activation is now limited to Atsuhiro's right arm.


2/6 D
4/6 B
5/6 A
3/6 C
Need To Make A Scene
5/6 A
Atsuhiro's stats, according to the Ultra Analysis Book


Prosthetic Arm: After losing his left arm to Overhaul, Atsuhiro wears a functional robotic arm as a replacement. This arm was provided by Giran. After becoming a PLF lieutenant, his new arm enables him to shoot out his marbles from his fingers.[5]

Battles & Events

Battles & Events

Chapter Appearances

Forest Training Camp Arc
70. Wild, Wild Pussycats Absent
71. Kota Absent
72. Day Two Absent
73. Good Evening Absent
74. Smoke Signal Absent
75. Stake Your Life, Hero! Absent
76. My Hero Absent
77. It's Chaos Absent
78. Whirling Chaos Absent
79. Drive It Home, Iron Fist!!! Absent
80. Establishing the Bakugo Bodyguard Brigade Debut
81. Roaring Upheavel Appears
82. What a Twist! Appears
83. Loss Absent
Hideout Raid Arc
84. From Iida to Midoriya Absent
85. Nothing but Fools Appears
86. Before the Storm Appears
87. Clash Appears
88. All For One Appears
89. All for a Certain One Appears
90. Reach Out Appears
91. Symbol of Peace Appears
92. One For All Absent
93. One For All's Ember Absent
94. From Teacher to Disciple Appears
95. End of the Beginning, Beginning of the End Absent
96. Home Visits Absent
97. Tell It Like It Is, Mom Absent
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 Absent
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 Appears
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 Absent
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 Appears
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 Mentioned
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 Flashback
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 Clone
157. Infinite 100 Percent Absent
158. Chisaki's Warped Compassion Clone
159. It's Over!! Appears
160. Expressway Appears
161. Bright Future Absent
162. Suitable One Absent
Meta Liberation Army Arc
218. The Meta Liberation Army Absent
219. Go! Slidin' Go! Appears
220. My Villain Academia Appears
221. Memento from All For One Appears
222. Tomura Shigaraki: Distortion Appears
223. Cockroaches Appears
224. Revival Party Appears
225. Interview with a Vampire Appears
226. Bloody Love Absent
227. Sleepy Appears
228. Wounded Soul Absent
229. All It Takes Is One Bad Day Absent
230. Sad Man's Parade Appears
231. Path Absent
232. Meta Abilities and Quirks Clone
233. Bright Future Absent
234. Sense Destruction Absent
235. Tenko Shimura: Origin Absent
236. Tenko Shimura: Origin, Part 2 Absent
237. Tomura Shigaraki: Origin Appears
238. Liberation Appears
239. Successor Absent
240. Power Appears
Endeavor Agency Arc
241. Do That Interview! Absent
242. Have a Merry Christmas! Absent
243. Off to Endeavor's Agency! Absent
244. Recommended Reading Absent
245. Rise to Action Appears
246. Message Absent
247. Status Report! Absent
248. One Thing at a Time Absent
249. The Hellish Todoroki Family Absent
250. Ending Absent
251. Just One Week Absent
252. The Unforgiven 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 Fantasy
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!! Appears
264. One's Justice Absent
265. Villains and Heroes Clone
266. Happy Life Appears
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 Appears
274. Search Absent
275. Encounter, Part 2 Flashback
276. You Cheated...! Absent
277. Who...? Appears
278. Disaster Walker Appears
279. League of Villains vs. U.A. Students Appears
280. Red Riot Appears
281. Plus Ultra Absent
282. Footfall of Destruction Absent
283. 75 Appears
284. Deep Blue Battle Absent
285. Katsuki Bakugo Rising Absent
286. The Ones Within Us Absent
287. Mistake Appears
288. Save Takeo!! Appears


  • Atsuhiro’s given name contains the kanji of "pressure" (?) and "large" (?). His surname contains 迫 (sako lit. "urge, force, imminent, spur on"?).
  • Mr. Compress' rankings in the Popularity Polls are as following:
    • Ranked 47th in the 3rd Popularity Poll.
    • Ranked 58th in the 4th Popularity Poll.
  • Atsuhiro's Japanese voice actor, Tsuguo Mogami, also voices the U.S.J. Nomu and Hood.


  • (To several U.A. students) "We're just a bit fanatical when it comes to our values. All we wish is to show him that there are other ways. Because you kids today... you have your values chosen for you."[6]


  1. My Hero Academia Official Character Book 2 Ultra Analysis.
  2. My Hero Academia Manga: Chapter 258.
  3. My Hero Academia Manga and Anime: Chapter 82 and Episode 45.
  4. My Hero Academia Manga: Chapter 160.
  5. My Hero Academia Manga: Chapter 279.
  6. My Hero Academia Manga: Chapter 81.

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