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"Gen. You betrayed me once. Yes, my greatest error was reviving you. Or so I thought... Now I'm glad to have you around."

— Tsukasa Shishio on Gen's complicated character, Dr. Stone, Chapter 142

Gen Asagiri (あさぎりゲン Asagiri Gen) is an enemy-turned-ally of Senku. Originally de-petrified by Tsukasa Shishio, he was sent to find Senku,[10] only to defect to the Kingdom of Science.

Ironically, he is the kind of person whom Tsukasa wished to not revive: a greedy man who cares only about his own desires. However, Tsukasa was desperate for a brilliant mind like Senku's to help him. Gen later becomes one of the Five Wise Commanders.

As one of the Five Wise Commanders, Gen is the most strategic about how to carry out missions, often finding ways to avoid labor if he can. When it comes to enemies, Gen acts as a tactical forecaster. Kaseki tends to drag him along to help with crafting if Chrome is busy with Senku.


Gen Icons.png

Gen is a slim young man, close to Senku in height, but taller. His hair is split, with the left half being short and black and the right half being white with longer strands around his face; prior to his petrification, all of his hair was black, but it was already partially white before becoming petrified.[11] His eyes are baggy and have a jagged stone mark running down his left eye in an angled line. This line varies in appearance depending on what Gen is doing, such as becoming flower-like when mimicking a woman's voice[12] or extra jagged while scheming[13] His petrification scar is healed by his second depetrification. After Tsukasa's revival, he used paint to recreate his scar.[14]

He wears an overcoat over a yukata and lacks proper footwear.

Later, Gen replaces his outfit with a similar overcoat over a yukata, but rather than it being laced up at the front of his neck, it's tied with a necktie, and his sash is a piece of fabric rather than rope. He also wears sack-like shoes, similar to Senku's original ones.[15]


Gen is somewhat full of himself and his abilities, taking pride in his status as a magician and a mentalist/psychologist, along with his knowledge of the human psyche. He is outwardly stoic, staying calm even when at spearpoint when he first arrives at Ishigami Village.[10] However, this facade seems easily broken through, as seen at his shock when Senku addresses him by name. Despite this, he is revealed to be extremely paranoid (though rightfully so), hiding multiple bags of blood in his clothes in the event he is attacked. He has shown signs of perversion, considering sticking by Tsukasa for the purpose of having a harem and hitting on Kohaku and later Amaryllis. Regardless, Gen is rather quirky and can often be seen speaking in Pig Latin; his most common verbal tic when shocked.[16] He tends to be self absorbed, and perverted; though he gives off gentlemanly air even when being honest about such. He also shows reluctance in participating in the manual labor involved in Senku's experiments (though given how arduous the labor is, it is understandable). In addition, as stated by Kohaku in his introduction, he is perfectly capable of lying without a hint of stress or change in expression.[10]

While not nearly as intelligent in terms of science compared to Senku, he proves to be his equal and one of his most vital allies due to his ability to understand the human psyche and manipulate people through lies in contrast to Senku's more honest nature. He uses his abilities to promote cooperation and enthusiasm, motivate allies, conduct negotiations, and outsmart enemies. He tends to shift between acting as a ditzy airhead when it suits him (such as to avoid work or going into battle) and an intelligent manipulator. He is confident and is shown to have nerves of steel, even in the face of death.

He is a proud turncoat, openly offering to lie to Tsukasa about Senku's death when he sees his kiln. Gen favors being on the "winning side," although he is also easily swayed by Senku promising him something that appeals to his personal interest. Despite this, he later admits to Senku that he was most likely already won over by Senku's intelligence and ability to move mankind forward. He proves to be loyal to Senku and uses his abilities to help further Senku's plans usually by manipulating people such as promising Minami a special present to get her to relinquish the last bit of the de-petrification potion she had to revive Francois and similarly tricking Ryusui into paying a ridiculous amount of money to board the hot air balloon (though they needed him to board due to his excellent piloting skills).

He shows a surprisingly strong will and level of endurance, being able to survive a death attack from Magma with proper preparation and still go to the Tsukasa Empire gravely injured to report Senku's death. He was also barely able to keep up with Francois walking to the Ishigami village two days straight (a rather difficult feat without food, water, or shoes).

While he frequently portrays an aura of selfishness, hard self-interest, manipulation and deviousness, Gen is intrinsically a good person who can't bring himself to harm others. His outward appearance is masked by his mastery in psychology, but his actions tell of loyalty, determination, kindness and even sacrifice at times.

He is more than capable of genuine kindness, at one point creating a telescope as a surprise birthday present for Senku. He also seems to get along decently well with Suika, a child. He seems to not hold grudges, as he is able to work with Magma and manipulate him without fear, despite Magma having once attempted to murder him. In addition, he is also quite genuine in his admiration of others, respectfully recounting Lillian Weinberg's renowned singing skills to the people of Ishigami village in reverential tones. This was likely to inspire them further to ally themselves with Senku's goal of bringing back civilization as well as to boost their morale by bringing to their awareness of how esteemed their ancestor was in the pre-petrification world.

On a side note, he has frequently stated that his favorite drink is cola[10] and that he doesn't drink alcohol.


Psychology: As a mentalist, he is deeply perceptive and manipulative, having a large knowledge of the human psyche. He is capable of analyzing and understanding obscure messages or drawings with his great knowledge about the human mind; he was able to decipher Kohaku's message by understanding what each image represented from her point of view. Gen is also able to "put [himself] in the mind[s] of [others]", correctly figuring out what they are thinking or planning. Gen is very crafty, as he anticipated being attacked[17] and created fake blood packs to wear for a visual trick and to soften blows to his body. This saved him from being killed by Magma.

  • Skilled Liar: Gen is an expert liar, as he can fool anyone. When it comes to the post-petrification humans, Gen can easily impress and trick them into believing his tall tales. Though he is equally good at manipulating people from his era (minus Senku, whom he often collaborates with in these cases) with his showmanship. Gen has stated that the best trick of a mentalist is to "make your joker look like the ace of spades". He was also able to fool a polygraph test, with only half-truths. This left Dr. Xeno amazed, even when the scientist suspected Gen of lying.[18]
  • Manipulation: Gen has three steps to manipulate someone into working for his goals, should the person be strong-willed and therefore hard to trick (like Moz). 1) Stand by them to build a sense of comradery; standing across from them makes the conversation feel adversarial. 2) Give inaccurate information relevant to the conversation; it will force the target to correct you and give up the correct information. 3) Order them to do the opposite of what you want them to do. Human beings naturally refuse an order by nature, choosing to do the opposite. His manipulation tactics are quickly seen when he goads Kinro and Ginro into helping Senku power-up an electricity generator.[19]
  • Stage Magic: Gen is a master of sleight of hand. He also keeps various props hidden within his coat, so he may cause distractions or fake "peace offerings" to buy time. He makes use of this immediately after arriving into the village, distracting the hostile villagers planning to attack Senku.[17]
  • Impersonation: He also makes for a very convincing female if the need to disguise himself comes up, with Kohaku stating that his only flaw was that he was too tall for a convincing woman. He is capable of mimicking people's voices to the point of being indiscernible from the original.
  • Linguistic Proficiency: He seems to be fluent in both Japanese and English. He was able to understand Ukyo when he was speaking English through the buried phone in order to conceal their conversation from the others present and offered Senku to take over the negotiation (Chapter 73). He was able to speak to both Stanley Snyder and Dr. Xeno with no problems.[18]

Chapter Appearances

Chapter Appearances
Vs. Tsukasa Arc
5. Yuzuriha Absent
6. Taiju vs. Tsukasa Absent
7. The Gunpowder Adventure Absent
8. Raise The Smoke Signal Absent
9. Senku vs. Tsukasa Absent
10. Student of Science Absent
11. Weapon of Science Absent
12. Epilogue of Prologue (End of Part 0) Pictured
Kingdom of Science Arc
13. Part 1: Stone World: The Beginning Absent
14. Those Who Have Faith Absent
15. Two Kingdoms of the Stone World Absent
16. Kohaku Absent
17. Nasty Looks Absent
18. Sorcery Showdown Absent
19. Two Million Years of Being Absent
20. Stone Road Absent
21. Dawn of Iron Absent
22. Survival Gourmet Absent
23. The Smooth Talker Debut
24. Lightning Speed!!! Appears
25. By These Hands, the Light of Science Appears
26. A Shadow Alliance Appears
27. A Certain Scientists Wish Pictured
28. Clear World Absent
29. Senku's Lab Absent
30. Death Green Absent
31. Friends Have Each Other's Backs Absent
32. Brain & Heart Absent
33. Baaad Chemicals Absent
Village Games Arc
34. Sneaky Grand Bout Strategy Absent
35. The Masked Warrior Absent
36. Kinro and Ginro Absent
37. Science-User Chrome Appears
38. Master of Flame Appears
39. And the Winner is... Appears
40. Two Million Years in the Making Appears
Village Origins Arc
41. Doctor Stone Appears
42. Tale for the Ages Absent
43. Humanity's Final Six Absent
44. One Hundred Nights, One Thousand Skies Absent
45. Epilogue of Part 1 (End of Part 1) Part 2: Stone Wars Appears
Vs. Hyoga Arc
46. Stone Wars Appears
47. Science Vs. Power Appears
48. Blades of Science Appears
49. To the Present Appears
50. Humanity's Greatest Weapon Appears
Communications Arc
51. Sweets for the Stone World Appears
52. Age of Energy Appears
53. Hard Knocks Crafting Club Appears
54. Flickering Blue Jewel Appears
55. Treasure Dungeon Push Start Appears
56. The Treasure Appears
57. Heat Heart Appears
58. Wave of Science Appears
59. Voices from Here to Infinity Appears
60. Angel's Song, Devil's Whisper Appears
61. Stone Wars Begin Appears
62. Double Chase Appears
63. Information Warfare Appears
64. Hotline Appears
65. Call From the Dead Appears
66. Liars and Truth Tellers Appears
67. Full Mobilization Appears
68. Flame of Revolution Appears
69. Steam Gorilla Appears
70. Paper Shield Appears
71. Prison Break Absent
72. Experience Points Appears
73. Top-Secret Mission Appears
74. Fateful 20 Seconds Appears
75. 20-Second Countdown Appears
76. Final Battle Appears
77. The Power of Science Appears
78. That Which Destroys or Saves Appears
79. For This Very Moment Appears
80. Humanity's Strongest Tag Team Absent
81. Fingertip Absent
82. Epilogue of Stone Wars (End of Part 2) Appears
Age of Exploration Arc
83. Dr. Stone Appears
84. People = Power Appears
85. Ultimate Resource Appears
86. Money Appears
87. Senku's Department Store Appears
88. Wings of Humanity Appears
89. Adventures Absent
90. New World Map Absent
91. Need Bread? Start with Wheat Appears
92. Desire is Noble Appears
93. The First Shot Is Yours Appears
94. The Scent of Black Gold Appears
95. First Contact Appears
96. Eye of Science Appears
97. The Joy of Leadership Appears
98. Ryusui Appears
99. Kingdom of Science Photo Journal Appears
100. Origin of the 100 Tales Appears
Treasure Island Arc
101. Treasure Chest Appears
102. Perseus, Ship of Science Appears
103. Light of Hope and Despair Appears
104. Men of Forensics Appears
105. The Island's Great Beauty Appears
106. The Secret of Petrification Appears
107. To the Trump Card Science Vessel Appears
108. Two Trump Cards Appears
109. The Great Escape Appears
110. Beautiful Science Appears
111. Science Wars Appears
112. King of Three Dimensions Appears
113. Cryptography Science Appears
114. Silently, Science Pierces the Stone Appears
115. One Second, One Grain Appears
116. Miracle in Hand Appears
117. The Kingdom of Science Strikes Back Appears
118. Silent Soldiers Appears
119. Science Soldiers Appears
120. Top Secret Appears
121. Medusa's True Face Absent
122. Brain-Battle Puzzle Pieces Appears
123. The Battle of Wits' Deal Game Appears
124. The Invention of God and the Devil Appears
125. The Decisive Three-Dimensional Battle Appears
126. A 3-D Strategy Absent
127. Medusa and Perseus Appears
128. Island-Wide Battle Royale Appears
129. Joker Appears
130. Devil's Choice Appears
131. Nasty Crimes Appears
132. The Strongest Weapon Is... Appears
133. Flash of Destruction Appears
134. Commander Faceoff Petrified
135. Counting Petrified
136. Medusa Vs. Science Absent
137. Last Man Standing Absent
138. End Of Part 3 Appears
New America City Arc
139. First Dream Appears
140. New World Plots Appears
141. First Team Appears
142. World Power Appears
143. Ryusui vs. Senku Appears
144. Ryusui & Gen vs. Senku & Kohaku Appears
145. Bar Francois Appears
146. Bar Francois: Bitters Appears
147. Science Journey Appears
148. Pioneers of Earth Appears
149. Light Lure in Darkness Appears
150. Righteous Science User Appears
151. Dr. X Appears
152. Doctor Vs. Doctor Mentioned
153. Science Wars Appears
154. Spy vs. Spy Appears
155. Science Is Elegant Mentioned
156. Two Scientists Absent
157. Same Time, Same Place Absent
158. Who's the Scientist? Absent
159. Lock On Absent
160. Gunshots Echo Absent
161. Craft Wars Appears
162. Down the Earth-Stained Path Absent
163. Multifront Final Battle Appears
164. Re-Lock On Absent
165. Know the Rules, Make the Rules Absent
166. Ultimate Knight Appears
167. Different Strokes Appears
168. Corn City: Population One Million Appears
169. RISK or HEART Appears
South America Arc
170. Staring Up at the Same Moon Appears
171. Staring at the Same Light Appears
172. Marked with an "X" of Wisdom Appears
173. Earth Race Appears
174. The Specter of the Panama Canal Appears
175. Ultra Race Across South America Appears
176. Net-Breaking Battle Plan Appears
177. Medusa Mechanism Appears
178. Science Scales Mountains Appears
179. Bonds on the High-Wire Appears
180. Sickening Yet Beautiful Appears
181. New World Science Appears
182. Diamond Heart Absent
183. Stone Sanctuary Appears
184. Fort Medusa Appears
185. Lovely Cleavage Plane Appears
186. To Each Their Own Blade Absent
187. Cyber Guerilla Appears
188. What I Once Sought to Destroy Absent
189. Our Dr. Stone Appears
190. Science Transcends Life Appears
191. Divine Scream, Down to Earth Absent
192. Until We Meet Again Appears
193. Our Stone World Petrified
New Stone World Arc
194. Homo Sapiens, All Alone Absent
195. Treasure Hunter, All Alone Petrified
196. Scientist, All Alone Absent
197. A Stony Eden and Its Forbidden Fruit Appears
198. Whole New World Appears
199. Superalloys Appears
200. Future Engine Appears
Globetrotting Arc
201. Morse Talk Appears
202. Ryusui Corp. Appears
203. Missile Heart Appears
204. The Universe is Written in the Language of Mathematics Appears
205. Universe of Zeroes and Ones Appears
206. Dawn of the Computer Appears
207. Linking the Circuit Diagram Appears
208. Science Transcends Humanity Appears
209. The Rocket's Hard Truth Appears
210. Not One-Way Appears
211. World Tour for Resources Appears
212. Final Part: Stone to Space Appears
Moon Mission Arc
213. Unknown Known Appears
214. Stone World's Earth Defense Force Appears
215. Long, Long Road Appears
216. Hello, World Appears
217. Science Underdogs Appears
218. WWW (World Wide Workshop) Appears
219. Three Heroes Appears
220. A Desire for All Appears
221. Entrusting It All Appears
222. Science Road Appears
223. 0 Appears
224. In Space Appears
225. Docking Appears
226. Giant Step Appears
227. It Was You Appears
228. Life Stone Appears
229. Why-Man Appears
230. Human Appears
231. A Future To Get Excited About Appears
232. Final Chapter: Dr. STONE Appears


  • Gen's last name, "Asagiri" (あさぎり), translates to morning mist/fog. His first name is the Japanese word for "illusion", a reference to his penchant for magic.
    • On the last page of chapter 60, Gen's name is written in kanji rather than hiragana and katakana: "asa" ( (あさ) shallow/superficial) "giri" ( (ぎり) mist) "gen" ( (ゲン) phantom/illusion/dream).[20] It is the only time in the manga it is written like this.
  • Gen has a low tolerance for alcohol.
  • Since the recreation of paper, Gen keeps a deck of crudely made cards with him all the time.
    • In addition to the normal 52 cards, he has three jokers.
    • Each joker has a phrase on it, but it's unknown if the other cards do as well.
    • It's possible Gen knows tarot, hence the phrases.
  • Gen's poster can be seen on a book called "Magic Psychology", prior to the petrification event.[21]
  • Gen's first petrification happened while posing on a box full of swords he escaped from during a performance.[22]
  • Similar to Senku's hair color, Gen's hair color has varied throughout the series. It appearing as blonde and blue (Chapter 66 Dr. Stone Character Poll), white and brown (Chapter 25 and 104 colour pages) and blonde and brown (Chapter 95 and 111 color pages, Shonen Jump Issue 31 2019, and the Viz Shonen Jump Banner of July 2019). In the anime, his hair is white and black.
  • Gen ranked 3rd in the 1st and 2nd Character Popularity Polls and placed 1st in the 3rd Character Popularity poll.
  • Gen's verbal quirk is to flip the halves of random words. For example, "yabe" (やべ) becomes "beya" (べや) or "muri" (無理) becomes "rimu" (理無).[23] In the English translations, this has been replaced with pig latin where he most notably uses it to describe Senku's crazy plans as "azy-cray".
  • Gen's heterochromatic hair might be caused by a condition named "poliosis", which causes a decrease or absense of melanin in affected hairy areas. This would explain why it became/remains discolored after depetrification, as well as suggest that he dyed his hair fully prior to the story's events. This is supported by the poster on the book "Magic Psychology"[21] where Gen's hair is fully black.
  • Gen's English voice actor is the real life husband of Magma's voice actor.
  • Gen and Senku share opposite birthdays, his being on the 01/04 (April 1st), and Senku’s being on the 04/01 (January 4th).
  • Gen's scar completely vanishes after the South America arc as he stops drawing it back on, which Boichi notes to have been on purpose.[24]


  1. Dr. Stone Manga: Volume 22 — Extras
  2. Dr. Stone Manga: Volume 4 — Q&A
  3. Dr. Stone Manga: Chapter 99, Page 18
  4. 4.0 4.1 Dr. Stone Manga: Chapter 178, Page 18
  5. Dr. Stone Manga: Volume 19 — Extras
  6. Dr. Stone Manga: Chapter 192, Page 21, Gen Asagiri is petrified along with the rest of the world.
  7. Dr. Stone Manga: Chapter 197, Page 6, Gen Asagiri is revived by Senku.
  8. Dr. Stone Manga: Chapter 213, Page 19
  9. Dr. Stone Manga: Chapter 214, Page 6
  10. 10.0 10.1 10.2 10.3 Dr. Stone Manga: Chapter 23
  11. Dr. Stone Manga: Volume 4 — Extras
  12. Dr. Stone Manga: Chapter 110, Page 16
  13. Dr. Stone Manga: Chapter 86, Page 15
  14. Dr. Stone Manga: Chapter 141, Page 18
  15. Dr. Stone Manga: Chapter 197
  16. https://twitter.com/CDCubed/status/966815171388805121 - Official English translator for Dr. Stone
  17. 17.0 17.1 Dr. Stone Manga: Chapter 24
  18. 18.0 18.1 Dr. Stone Manga: Chapter 151
  19. Dr. Stone Manga: Chapter 25, Page 10
  20. https://twitter.com/CDCubed/status/1003685604679475200?s=20 Caleb Cook's Dr. Stone trivia ch60
  21. 21.0 21.1 Dr. Stone Manga: Chapter 12, Page 8
  22. Dr. Stone Manga: Chapter 26, Page 1
  23. Dr. Stone Anime: Episode 26
  24. https://www.youtube.com/watch?v=X7joK-WEJ6A Boichi! PLZ Draw this(My favorite characters)!![Only in BoichibeTOON in YouTube] / Gen Asagiri

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