My Hero Academia Wiki
My Hero Academia Wiki
U.A. students or not, kids are kids. Of course I was worried about 'em. But give them room to shine and... every one of them... is even more of a hero than us adults!
Ken Takagi in "Transform!"

This article is about the Pro Hero who participated in the Shie Hassaikai Raid. For the U.A. High teacher known as Cementoss, see Ken Ishiyama.

Ken Takagi ( (たか) () (けん) Takagi Ken?),[4] also known as Lock Hero: Rock Lock (錠前ヒーロー ロックロック Jōmae Hīrō Rokku Rokku?) is a Pro Hero.


Ken is a man of average height and has dark, curly hair. He has pierced ears with padlocks earrings. Notably, his fingertips have protrusions that resemble key teeth.

Part of his hero costume is a small yellow mask that covers his eyes. He wears a red necklace around his neck with five keys dangling from it (three keys in the anime). Rock Lock wears a yellow and dark green, short-sleeved bodysuit with a print resembling a keyhole. He wears two light gray shoulder pads with a dark keyhole shape on both of them, a pair of white boots, and a brown belt with keys dangling on the side.


Ken is a very pragmatic and blunt man who is quick to judge whether or not someone is an asset. He is especially critical of newbies and young students, aware of the fact that they are possibly children risking their lives in dangerous situations. His infant son makes him more cognizant of the students' young age than the other pros. He is often annoyed by inexperience, though this may be due to the stakes of their mission against Overhaul.

However, his critical attitude does not border to malice, as he is glad that Tamaki Amajiki did not get permanently injured. Ken is also prone to strong confidence in himself and his allies, as he is certain that the Yakuza would cower in fear and surrender or run away. His confidence sometimes borders on arrogance, as he tells Sir Nighteye to use his foresight on him to prove it is fallible, believing himself entirely capable of escaping whatever fate Sir Nighteye sees.

He does not like being patronized or underestimated himself, as unlike students he feels he has proven himself a competent and experienced hero.

Though he makes snap judgements of others and strongly doubts the capabilities of the students, his first impressions are not set in stone, as he is very impressed and proud when the students exceed his expectations and goes so far as to say they are better heroes than the pros.



Lock Down ( () (じょう) Sejō?): Ken's Quirk allows him to immobilize any nonliving thing he's touched, stopping it in a fixed location in space.

It can be overwhelmed by enough force and it cannot be applied to large areas.[5]

Super Moves

  • Deadbolt (本締 (デッドボルト) Deddoboruto?): By touching a nearby surface and performing a 180° spin with his hand, Ken secures his immediate area down in a point of space. It is first used against Joi Irinaka.


3/6 C
3/6 C
4/6 B
5/6 A-
Cynical Edge
4/6 B
Ken's stats, according to the Ultra Analysis Book


Tile: Rock Lock uses a tile that he throws and freezes it in mid-air, giving himself a foothold.

Battles & Events

Battles & Events

Chapter Appearances

Shie Hassaikai Arc
122. A Season for Encounters Absent
123. Unrivaled Absent
124. Trouble Ahead!! Episode: Work Studies Absent
125. Overhaul Absent
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 Debut
136. Close at Hand!! Appears
137. Restraint!! Appears
138. Go!! Appears
139. Shudder! The Underground Labyrinth Appears
140. Suneater of the Big Three Appears
141. Hassaikai: Behind the Scenes Absent
142. Shield and Shield, Spear and Shield Appears
143. Let’s Rumble, Rappa!! Absent
144. Red Riot, Part 1 Absent
145. Red Riot, Part 2 Absent
146. Temp Squad Absent
147. Twoga!! Appears
148. The Anguish of Young Twoga Appears
149. Don't Get Mad, Irinaka Appears
150. Mirio Togata Absent
151. Mirio Togata!! Absent
152. Lemillion Absent
153. Transform! Appears
154. Unforeseen Hope Flashback
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!! Appears
160. Expressway Absent
161. Bright Future Appears
162. Suitable One Absent
Pro Hero Arc
184. Japanese Hero Billboard Chart Absent
185. Wing Hero: Hawks Appears
186. Endeavor and Hawks Absent
187. Flaming Roar! vs. Nomu: High-End Absent
188. Your Father, the Number One Hero Absent
189. Why He Gets Back Up Absent
190. His Start Absent
191. Dabi, Hawks, Endeavor Absent
192. The Todoroki Family Absent
193. Vestiges Absent
Paranormal Liberation War Arc
253. Shirakumo Absent
254. 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 Appears
259. A Quiet Beginning Appears
260. Life's Work Appears
261. High-Ends Appears
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 Appears
270. Inheritance Absent
271. Dark Cloud Absent
272. Good Morning! Appears
273. The Thrill of Destruction Absent
274. Search Absent
275. Encounter, Part 2 Appears
276. You Cheated...! Appears
277. Who...? Appears
278. Disaster Walker Absent
279. League of Villains vs. U.A. Students Absent
280. Red Riot, Part 3 Appears
281. Plus Ultra Appears
282. Footfall of Destruction Appears
283. 75 Appears
284. Deep Blue Battle Appears
285. Katsuki Bakugo Rising Appears
286. The Ones Within Us Absent
287. Mistake Absent
288. Save Takeo!! Absent
289. Miss Candid and Miss Shut-Away Appears
290. Dabi's Dance Absent
291. Thanks For Going Strong Absent
292. Threads of Hope Absent
293. Hero-Saturated Society Absent
294. Final Performance Appears
295. Tenacious Absent
296. Hellish Hell Absent
297. Tartarus Absent
298. Sounds of Collapse Mentioned
299. Like Those Tragic Tales Absent
300. The Hellish Todoroki Family, Part 2 Absent
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 Mentioned
305. Izuku Midoriya and Tomura Shigaraki Absent
306. The Final Act Begins Absent
U.A. Traitor Arc
335. Zygotes Appears
336. Villain Absent
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
Final War Arc
343. Let You Down Flashback
344. Stars Absent
345. Division Absent
346. Super Hyper Unfair Broken Stage Absent
347. Inflation Absent
348. Unrequited Absent
349. Battle Flame Absent
350. Bound to a Fiery Fate Absent
351. Two Flashfires Absent
352. Ultimate Moves Absent
353. Endeavor Absent
354. Oopsie Daisy!! Absent
355. Extras Absent
356. Regarding the Enemy Absent
357. Wounded Hero, Burning Bright and True!! Absent
358. The Guy Who's Made Some Progress Absent
359. Place of Learning Absent
360. Despite It All... Absent
361. Abnormal Happenings Absent
362. Light Fades to Rain Absent

Anime Appearances

Season 4
64. The Scoop on U.A. Class 1-A Absent
65. Overhaul Absent
66. Boy Meets... Absent
67. Fighting Fate Absent
68. Let's Go, Gutsy Red Riot Absent
69. An Unpleasant Talk Debut
70. GO!! Appears
71. Suneater of the Big Three Appears
72. Red Riot Appears
73. Temp Squad Appears
74. Lemillion Appears
75. Unforeseen Hope Appears
76. Infinite 100% Absent
77. Bright Future Appears
78. Smoldering Flames Flashback
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 Absent
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 Appears
88. His Start Absent


  • Ken's name contains the kanji for "tall, high" ( taka?), "tree" ( gi?) and "lock or key" ( ken?).
  • He likes bicycles.
  • Ken shares his first name with Ken Ishiyama, another Pro Hero.


  1. My Hero Academia Manga: Chapter 138 (p. 9).
  2. 2.0 2.1 My Hero Academia Manga: Vol. 15, Omake
  3. 3.0 3.1 My Hero Academia: Ultra Analysis: The Official Character Guide.
  4. My Hero Academia Manga: Vol. 15 (p. 184)
  5. My Hero Academia Manga and Anime: Chapter 147 and Episode 73.

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