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This is no time for you to be interrupting our one-on-one fight, Ingenium!!
Sen Kaibara to Tenya Ida in "Tuning Up"

Sen Kaibara (回原 (かいばら) (せん) Kaibara Sen?), also known as Spiral (スパイラル Supairaru?), is a student in Class 1-B at U.A. High School, training to become a Pro Hero.

Appearance[]

Sen is a young man of medium height with dark, shaggy hair and dark eyes, which are relatively thin and lazy-looking. He has a modest athletic build, the same as most of his classmates, and a slight tan.

His hero costume appears to be a dark-colored windbreaker with grey, drill-patterned rings around the base of the neck and arms. Over this, Sen wears a large white trench coat and gloves.

Personality[]

Sen is a levelheaded person who remains mostly calm and focused on many occasions. He is also shown to be more mature than Neito Monoma, telling the latter to quit provoking Katsuki Bakugo and focus on his goal during the Cavalry Battle.[1]

Despite his serious demeanor, Sen can sometimes warm up during times when he drops his solemn behavior, such as when he shows enthusiasm in fighting against Mashirao Ojiro during the Joint Training Battle.[2]

He is also rather belligerent in personality and often gets dragged along in his friends' antics. Sen is also described as an "ikemen", having the appearance of a good-looking man.[3]

Abilities[]

Overall Abilities: Sen has proven to be a capable combatant with a great handle on his Quirk and some proficiency in close-quarters combat. Using the gyrating effects of his Quirk in tandem with his hand-to-hand combat abilities, Sen can deliver powerful spinning attacks that can damage his enemies, which are amplified if he uses his drill gloves.

During the third round of the Joint Training Battle, Sen used his gyration-based fighting style to force Mashirao Ojiro, a skilled martial artist, on the defensive.

Quirk[]

Gyrate ( (せん) (かい) Senkai?): Sen's Quirk allows him to make any part of his body rotate at high speed like a drill. He can significantly enhance his hand-to-hand combat skills using this heavy rotation to augment his physical strikes.

Stats[]

Power
 
4/6 B
Speed
 
4/6 B
Technique
 
4/6 B
Wits
 
4/6 B
Brutal Thinking
 
5/6 A
Sen's stats, according to the Ultra Analysis Book

Equipment[]

Drill Gloves: Sen wears a pair of spiral-patterned gloves that cover only his fingers. These gloves increase Sen's offensive capabilities as they can be used to damage his foes greatly and make physically defending against his Quirk impractical. Thanks to his Gyrate Quirk, these spirals act like a drill and cut into an enemy.

Battles & Events[]

Battles & Events

Chapter Appearances[]

Appearances
U.A. Sports Festival Arc
22. That's the Idea, Ochaco Absent
23. Roaring Sports Festival Absent
24. Mad Dash and Knockdown Absent
25. In Their Own Quirky Ways Absent
26. Chase Down the Leader Debut
27. Earth-Shatteringly Fateful Negotiations Appears
28. Strats, Strats, Strats Appears
29. Unaware Appears
30. Cavalry-Match Finale Appears
31. The Boy Born with Everything Absent
32. Smile, Prince of Nonsense Land! Appears
33. Shinso's Situation Absent
34. Victory or Defeat Absent
35. Battle On, Challengers! Absent
36. Bakugo vs. Uraraka Absent
37. Midoriya and Endeavor Absent
38. Todoroki vs. Midoriya Absent
39. Shoto Todoroki: Origin Absent
40. Emancipation Absent
41. Fight On, Ida Absent
42. Final-Match Time Absent
43. Todoroki vs. Bakugo Absent
44. Relaxing Day Off Absent
Forest Training Camp Arc
70. Wild, Wild, Pussycats Absent
71. Kota Absent
72. Day Two Appears
73. Good Evening Absent
74. Smoke Signal Absent
75. Stake Your Life, Hero! Absent
76. My Hero Absent
77. It's Okay Absent
78. Whirling Chaos Absent
79. Drive It Home, Iron Fist!!! Absent
80. Establishing the Bakugo Bodyguard Brigade Absent
81. Roaring Upheaval Absent
82. What a Twist! Absent
83. Loss Appears
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) Absent
174. Golden Tips Imperial Absent
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!! Absent
180. Unbeknownst Absent
181. For Someone Else Absent
182. Let It Flow! School Festival! Absent
183. Festival All Day Long!! Absent
Joint Training Arc
194. Cold Skies over U.A. High! Absent
195. Clash! Class A vs. Class B! Appears
196. Make It Happen, Shinso!! Absent
197. Quaotic Quirkstravaganza Appears
198. Know Where You Stand when It Counts!! Appears
199. Operation New Improv Moves! Absent
200. Clever Commander! Absent
201. Foresight Appears
202. Match 3 Appears
203. Flexible! Juzo Honenuki! Appears
204. Tuning Up Appears
205. Detour Absent
206. Match 3 Conclusion Appears
207. Early Bird! Absent
208. Match 4 Conclusion Absent
209. Match 5 Start Absent
210. The One For All Dream Absent
211. That Which Is Inherited Absent
212. That Which Is Inherited, Part 2 Absent
213. Realm of Souls Absent
214. Our Brawl Absent
215. Final Face-Off! Midoriya vs. Shinso! Absent
216. Class A vs. Class B: Conclusion! Appears
217. The New Power and All For One 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 Absent
246. Message Appears
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

Anime Appearances[]

Appearances
Season 2
14. That's the Idea, Ochaco Absent
15. Roaring Sports Festival Absent
16. In Their Own Quirky Ways Debut
17. Strategy, Strategy, Strategy Appears
18. Cavalry Battle Finale Appears
19. The Boy Born with Everything Appears
20. Victory or Defeat Absent
21. Battle on, Challengers! Absent
22. Bakugo vs. Uraraka Appears
23. Shoto Todoroki: Origin Absent
24. Fight on, Ida Appears
25. Todoroki vs. Bakugo Appears
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 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 Appears
42. My Hero Absent
43. Drive It Home, Iron Fist!!! Absent
44. Roaring Upheaval Absent
45. What a Twist! Appears
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 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 5
89. All Hands on Deck! Class 1-A Absent
90. Vestiges Absent
91. Clash! Class A vs. Class B! Appears
92. Make It Happen, Shinso! Appears
93. Operation New Improv Moves Appears
94. Foresight Appears
95. Match 3 Appears
96. Match 3 Conclusion Appears
97. Early Bird! Appears
98. That Which Is Inherited Absent
99. Our Brawl Appears
100. The New Power and All For One Appears
101. Have a Merry Christmas! Absent
102. Off to Endeavor's Agency! Absent
103. One Thing at a Time Appears
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

Trivia[]

  • Sen likes cameras.
  • Sen's surname contains the kanji for "revolve" ( kai?) and "field" ( bara?), and his first name contains "rotation" ( sen?).
  • Sen shares his Japanese and English voice actors with other characters.
  • Sen's Quirk could be a reference to the powers of The Flash villain The Top or the Marvel villain Whirlwind.

References[]

  1. 1.0 1.1 My Hero Academia Manga and Anime: Chapter 29 and Episode 18.
  2. My Hero Academia Manga and Anime: Chapter 203 and Episode 95.
  3. My Hero Academia Manga: Vol. 22.

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