My Hero Academia Wiki
My Hero Academia Wiki

Don't go thinking what you did was right! The show didn't get canceled because you weren't hurt too bad! But that doesn't make it okay! You're still a student here, with only a provisional license! When there's a fight, you rely on us! We're here to protect you kids!
Ryo Inui scolding Izuku Midoriya in "Festival All Day Long!!"

Ryo Inui ( (いぬ) () (りょう) Inui Ryō?),[2] also known as the Hunting Dog Hero: Hound Dog (猟犬ヒーローハウンドドッグ Ryōken Hīrō Haundodoggu?), is a Pro Hero, and the lifestyle guidance counselor at U.A. High School.[4]


Ryo has the appearance of a dog due to his Quirk. He has a scruffy mane of blond hair sticking straight out behind his head. He also wears a muzzle over his slightly pointed snout in his hero costume.


When angry, Ryo speaks in an incoherent and violent manner with a mix of words and a sound akin to a dog's growling.[5]


U.S.J. Arc

Ryo and several other U.A. teachers arrive at the U.S.J. to help Class 1-A and All Might against the League of Villains' attack.[6]

Shie Hassaikai Arc

During the Opening Ceremony, Ryo has some final comments. Unfortunately, his anger causes his speech to come out as a mix of words and incoherent growls, ending with a howl which scares a few of the students. Vlad King relieves Ryo of his speech and reiterates what Ryo wanted to say as the Pro Hero sulks away angrily.[4]

U.A. School Festival Arc

Ryo and Ectoplasm are put in charge of security at the U.A. School Festival.[7] The night before the festival, Ryo is seen yelling at Class 1-A to go to sleep.

Ryo and Ectoplasm happen upon Gentle and La Brava.

As the festival begins, Ryo smells the intruders[8] and heads out with several clones of Ectoplasm. They come across Gentle Criminal and La Brava after the criminals are beaten by Izuku Midoriya, and Gentle declares his surrender.[9]

After Class 1-A's Show, Ryo praises Izuku for preventing the festival from being canceled, however, he also scolds him for being out of line since he failed to contact any Heroes in the vicinity and reminds him that he is not the only Hero out there protecting the peace. Izuku acknowledges his fault which satisfies Ryo who sends Izuku flying towards the festival, telling him to have fun.[5]


Skilled Youth Counselor: As a high school guidance counselor, it is implied that he is skilled in helping youths deal with their problems.


Dog ( (いぬ) Inu?): Ryo's Quirk gives him the attributes and abilities of a dog, such as a heightened sense of smell.


5/6 A+
5/6 A
2/6 D-
4/6 B
Canine Loyalty
5/6 A
Ryo's stats, according to the Ultra Analysis Book


Vlad King

Ryo and Sekijiro appear to get along well. After Ryo has an angry fit, Sekijiro approaches him and takes over for his speech, having understood what Ryo wanted to say.[4]

Battles & Events

Battles & Events

Chapter Appearances

U.S.J. Arc
12. Yeah, Just Do Your Best, Ida! Absent
13. Rescue Training Absent
14. Encounter with the Unknown Absent
15. Vs. Absent
16. Know Your Enemies Absent
17. Game Over Absent
18. Heroes' Counterattack Absent
19. All Might Absent
20. The World of Pros Debut
21. In Each of Our Hearts Absent
Vs. Hero Killer Arc
45. Time to Pick Some Names Absent
46. Bizarre! Gran Torino Appears Appears
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 Absent
58. Internship's End Absent
59. Listen Up!! A Tale from the Past Absent
Shie Hassaikai Arc
122. A Season for Encounters Appears
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 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
U.A. School Festival Arc
169. School Festival Absent
170. With Eri Absent
171. Gentle and La Brava Absent
172. Prepping for the School Festival Is the Funnest Part (Part 1) Absent
173. Prepping for the School Festival Is the Funnest Part (Part 2) Appears
174. Golden Tips Imperial Mentioned
175. Morning, the Day Of Appears
176. Deku vs. Gentle Criminal Absent
177. At the Construction Site Absent
178. The Woman Called La Brava Absent
179. School Festival Start!! Appears
180. Unbeknownst Appears
181. For Someone Else Appears
182. Let It Flow! School Festival! Absent
183. Festival All Day Long!! Appears

Anime Appearances

Season 1
1. Izuku Midoriya: Origin Absent
2. What It Takes to Be a Hero Absent
3. Roaring Muscles Absent
4. Start Line Absent
5. What I Can Do for Now Absent
6. Rage, You Damn Nerd Absent
7. Deku vs. Kacchan Absent
8. Bakugo's Start Line Absent
9. Yeah, Just Do Your Best, Ida! Absent
10. Encounter with the Unknown Absent
11. Game Over Absent
12. All Might Absent
13. In Each of Our Hearts Debut
Season 2
14. That's the Idea, Ochaco Absent
15. Roaring Sports Festival Appears
16. In Their Own Quirky Ways Appears
17. Strategy, Strategy, Strategy Appears
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 Appears
23. Shoto Todoroki: Origin Appears
24. Fight on, Ida Absent
25. Todoroki vs. Bakugo Absent
26. Time to Pick Some Names Appears
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 Absent
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 Absent
41. Kota Absent
42. My Hero Absent
43. Drive It Home, Iron Fist!!! Absent
44. Roaring Upheaval Absent
45. What a Twist! Absent
46. From Ida to Midoriya Absent
47. All For One Absent
48. Symbol of Peace Absent
49. One For All Absent
50. End of the Beginning, Beginning of the End Absent
51. Moving into Dorms Absent
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 Appears
63. Unrivaled Absent
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 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 Absent
83. Gold Tips Imperial Appears
84. Deku vs. Gentle Criminal Appears
85. School Festival Start!! Appears
86. Let It Flow! School Festival! Appears
87. Japanese Hero Billboard Chart Absent
88. His Start Absent


  • Ryo's surname contains the kanji for "dog" ( inu?) and "well" ( i?), and his first name contains "hunting" ( ryō?).
  • Ryo's English voice actor, Zach Bolton, also voices Sansa Tamakawa and Centipeder.


  1. My Hero Academia Manga: Chapter 122 (p. 2-3).
  2. 2.0 2.1 2.2 2.3 My Hero Academia Manga: Vol. 14, Omake
  3. 3.0 3.1 My Hero Academia: Ultra Analysis: The Official Character Guide.
  4. 4.0 4.1 4.2 My Hero Academia Manga and Anime: Chapter 122 and Episode 62.
  5. 5.0 5.1 My Hero Academia Manga and Anime: Chapter 183 and Episode 86.
  6. My Hero Academia Manga and Anime: Chapter 20 and Episode 13.
  7. My Hero Academia Manga and Anime: Chapter 174 (p. 14) and Episode 83.
  8. My Hero Academia Manga and Anime: Chapter 179 (p. 1) and Episode 85.
  9. My Hero Academia Manga and Anime: Chapter 180 and Episode 85.

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