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Jasper (ジャスパー Jasupā) is a member of Ishigami Village. Together with Turquoise, he serves as a guard for the village's priestess.[3]


Jasper has mid-length white hair and a small black goatee. He has a long, straight nose and a stern expression. He wears a piece of rope tied around his neck and wears dark green clothes.


Jasper is a calm and soft-spoken man. He is very loyal to the village and as such is tasked with guarding the village's priestess, Ruri. As with most villagers, Jasper is wary of Senku at first, but eventually comes to accept him as an integral part of the village.

Abilities and Skills[]

  • Battle Prowess: Being the runner up for the Grand Bout against Kokuyo, it's clear that Jasper possesses some good battle prowess to make it that far into the Grand Bout[4], and he could perhaps be one of the villages strongest warriors.
  • Swordsmanship: Jasper is seen using a katana in the battle for the Cave of Miracles[5], and he is usually seen with two swords attached to his rope around his waist.
  • Refereeing: During the Grand Bout, Jasper is the one to referee the match, and is said to be very good at this job, even Chrome mentioning that he is an insanely good referee. Much like Kinro, Jasper has great respect for the rules and won't tolerate anyone breaking them. When Kokuyo and Turquoise question why he let Kohaku participate, he says that the rules of the Grand Bout are unable to be changed[6].


Kingdom of Science Arc[]

He is first seen berating Kohaku for her apparent clumsiness with the water she needed to carry to Ruri. At the request of Ruri, he and Turquoise leave the two sisters alone to talk.[7]

Jasper and Turquoise are next present at a hearing with what appears to be the village's leader, Kokuyo. They disclose that the person who brought the stranger to the village is in fact Kohaku, much to Kokuyo's frustration.[8]

Village Games Arc[]

Jasper and Turquoise set preparations for the village's games. Turquoise scolds him for not stopping Kohaku join the tournament again, Jasper says the rules are sacred and no rule says a woman can't participate, with the former saying that no one would think a woman would join the tournament to begin with and that's why there is no prohibition for women. Kokuyo says he is fine with Kohaku present, as he wouldn't allow a man who can't beat a woman rule the village. Jasper then informs Kokuyo that Senku has joined the games as well.[9]

When Ruri collapses from her ailment, Kokuyo scolds Jasper for letting her walk while feeling sick.[10]

Jasper acts as the match judge during the Village Games, deciding whether a rule has been broken during a match. During Kinro's fight with Magma, he rules that Suika throwing in her helmet to help Kinro is not against the rules.[11]

Later, when Chrome uses the same helmet to beat Magma by lighting his shirt on fire, Jasper allows it, letting Chrome win the match. He inspects the helmet afterwards, with Chrome saying the helmet itself was already allowed while the rest is his own sweat and tears. Impressed, Jasper announces Chrome the winner of the bout. When Ginro wrongly deduces Ruri is willing to marry anyone that wins the village games, Jasper thinks to himself how unaware Ginro is; not even being able to read that Ruri's statement was just for the sake of formality. Eventually, Jasper has no choice but to declare Senku the ultimate victor of the competition as Chrome faints before the former has a chance to surrender.[12]

He is surprised when Senku cured Ruri and watches the girl dash through the village.

Vs. Hyoga Arc[]

When Homura set the village ablaze, a worried Jasper and Turquoise tried to tend to Ruri. However, they were told to forget her and protect the children. While doing so, the pair spotted Homura who cut off their path.

Communications Arc[]

Jasper is present when Senku creates cotton candy and is amazed by the taste.

Once Senku finished recreating the record player is made, Jasper is amazed by hearing the recording of Senku's father and the song by Lillian Weinberg.

When Homura attacked, Jasper was surprised when she recognized him from her months of observation.[13]

South America Arc[]

Due to the petrification beam being activated, Jasper was petrified with the other villagers.[14]

Moon Mission Arc[]

Jasper and Turquoise are tasked with watching the Medusa through surveillance cameras placed inside its containment chamber.

Chapter Appearances[]

Chapter Appearances
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 Pictured
18. Sorcery Showdown Absent
19. Two Million Years of Being Debut
20. Stone Road Appears
21. Dawn of Iron Absent
22. Survival Gourmet Absent
23. The Smooth Talker Appears
24. Lightning Speed!!! Absent
25. By These Hands, the Light of Science Absent
26. A Shadow Alliance Absent
27. A Certain Scientists Wish Appears
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 Appears
Village Games Arc
34. Sneaky Grand Bout Strategy Appears
35. The Masked Warrior Appears
36. Kinro and Ginro Appears
37. Science-User Chrome Absent
38. Master of Flame Pictured
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 Pictured
45. Epilogue of Part 1 (End of Part 1) Part 2: Stone Wars Pictured
Vs. Hyoga Arc
46. Stone Wars Absent
47. Science Vs. Power Absent
48. Blades of Science Absent
49. To the Present Pictured
50. Humanity's Greatest Weapon Absent
Communications Arc
51. Sweets for the Stone World Absent
52. Age of Energy Absent
53. Hard Knocks Crafting Club Absent
54. Flickering Blue Jewel Absent
55. Treasure Dungeon Push Start Absent
56. The Treasure Absent
57. Heat Heart Absent
58. Wave of Science Absent
59. Voices from Here to Infinity Appears
60. Angel's Song, Devil's Whisper Absent
61. Stone Wars Begin Absent
62. Double Chase Pictured
63. Information Warfare Absent
64. Hotline Absent
65. Call From the Dead Absent
66. Liars and Truth Tellers Absent
67. Full Mobilization Pictured
68. Flame of Revolution Absent
69. Steam Gorilla Absent
70. Paper Shield Absent
71. Prison Break Absent
72. Experience Points Absent
73. Top-Secret Mission Absent
74. Fateful 20 Seconds Absent
75. 20-Second Countdown Absent
76. Final Battle Absent
77. The Power of Science Absent
78. That Which Destroys or Saves Absent
79. For This Very Moment Absent
80. Humanity's Strongest Tag Team Absent
81. Fingertip Absent
82. Epilogue of Stone Wars (End of Part 2) Absent
Age of Exploration Arc
83. Dr. Stone Absent
84. People = Power Pictured
85. Ultimate Resource Absent
86. Money Absent
87. Senku's Department Store Absent
88. Wings of Humanity Absent
89. Adventures Absent
90. New World Map Appears
91. Need Bread? Start with Wheat Absent
92. Desire is Noble Absent
93. The First Shot Is Yours Absent
94. The Scent of Black Gold Pictured
95. First Contact Absent
96. Eye of Science Absent
97. The Joy of Leadership Absent
98. Ryusui Pictured
99. Kingdom of Science Photo Journal Absent
100. Origin of the 100 Tales Pictured
New America City Arc
139. First Dream Absent
140. New World Plots Absent
141. First Team Absent
142. World Power Absent
143. Ryusui vs. Senku Absent
144. Ryusui & Gen vs. Senku & Kohaku Absent
145. Bar Francois Absent
146. Bar Francois: Bitters Absent
147. Science Journey Absent
148. Pioneers of Earth Absent
149. Light Lure in Darkness Absent
150. Righteous Science User Absent
151. Dr. X Absent
152. Doctor Vs. Doctor Absent
153. Science Wars Absent
154. Spy vs. Spy Absent
155. Science Is Elegant Pictured
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 Absent
162. Down the Earth-Stained Path Absent
163. Multifront Final Battle Absent
164. Re-Lock On Absent
165. Know the Rules, Make the Rules Absent
166. Ultimate Knight Absent
167. Different Strokes Absent
168. Corn City: Population One Million Absent
169. RISK or HEART Absent
Globetrotting Arc
201. Morse Talk Absent
202. Ryusui Corp. Absent
203. Missile Heart Absent
204. The Universe is Written in the Language of Mathematics Absent
205. Universe of Zeroes and Ones Absent
206. Dawn of the Computer Absent
207. Linking the Circuit Diagram Absent
208. Science Transcends Humanity Absent
209. The Rocket's Hard Truth Absent
210. Not One-Way Absent
211. World Tour for Resources Absent
212. Final Part: Stone to Space Petrified
Moon Mission Arc
213. Unknown Known Absent
214. Stone World's Earth Defense Force Pictured
215. Long, Long Road Absent
216. Hello, World Absent
217. Science Underdogs Absent
218. WWW (World Wide Workshop) Absent
219. Three Heroes Absent
220. A Desire for All Absent
221. Entrusting It All Absent
222. Science Road Absent
223. 0 Pictured
224. In Space Absent
225. Docking Absent
226. Giant Step Absent
227. It Was You Absent
228. Life Stone Flashback
229. Why-Man Absent
230. Human Absent
231. A Future To Get Excited About Absent
232. Final Chapter: Dr. STONE Absent


  • His name comes from the opaque gemstone, which can either come in shades of red or green. This is consistent with all other members of Ishigami Village, who have names referencing metals and crystals.


  1. Dr. Stone Manga: Volume 19 — Extras
  2. Dr. Stone Manga — Chapter 193, Jasper is petrified along with the rest of the world.
  3. Dr. Stone Manga: Chapter 19, Page 10
  4. Dr. Stone Manga: Chapter 52
  5. Dr. Stone Anime: Episode 32
  6. Dr. Stone Anime: Episode 13
  7. Dr. Stone Manga: Chapter 19, Page 11
  8. Dr. Stone Manga: Chapter 20, Page 4
  9. Dr. Stone Manga: Chapter 33, Page 13
  10. Dr. Stone Manga: Chapter 34, Page 4
  11. Dr. Stone Manga: Chapter 36, Page 3
  12. Dr. Stone Manga: Chapter 39, Page 17
  13. Dr. Stone Manga: Chapter 62, Page 16
  14. Dr. Stone Manga: Chapter 192, Page 21

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