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"I don't think. I take action and search!! That's how my science starts!"

— Chrome, Dr. Stone, Chapter 71

Chrome (クロム Kuromu) is the alleged sorcerer and future scientist of Ishigami Village. Originally a rival, he grew close to Senku as the de-petrified human taught him the art of science. He is one of the protagonists of the series.

Having been fascinated with nature's resources since a young age, Chrome was always interested in experimenting with different materials despite having little to no knowledge about humanity's achievements and compounded scientific knowledge over thousands of years.[16]

As part of the Kingdom of Science, Chrome serves as the unofficial right hand of Senku; this trust is what makes him one of the Five Wise Commanders. He is also the only post-petrification human among them. Gifted in both natural science and inventing, Chrome tends to alternate between making chemicals with Senku and building with Kaseki.


Chrome Icons

Chrome is a young man of average height and build. He has round, brown eyes and matching spiky brown hair, and he keeps a rope tied around his head like a headband. He's most often seen with a cheerful expression.

His usual outfit consists of a short-sleeved, dark blue shirt, matching pants, a rope belt, and two cross-body satchels that contain materials he's collected. When he was first introduced, Chrome donned a cape that matched the color of his outfit, hemmed with rope.

Later in the series, his outfit it upgraded to less primitive satchels that have eyelets on the straps[17], and a shirt with the logo of the Kingdom of Science on the sleeves. His headband is also remade by Suika, and has more frayed edges.[7]


Chrome is a highly energetic person with a lot of passion and curiosity. He is genuinely interested in science, although at first, he only knows it as sorcery. Chrome is confident in his intellect, enough so to go toe to toe with Senku despite getting destroyed in a battle of wits.[18] He also has a tendency to refer to something as "bad" when he thinks it is cool or amazing.

Chrome has a deep love of science, though he admits his expertise and knowledge lies mainly in exploration, particularly pertaining to rocks and minerals and gathering them.[16] He even becomes offended when Ryusui refers to Chrome as an amateur explorer.[19] He was amazed by new things such as vehicles, inventions, and being petrified. He is loyal to his friends and, while lacking in physical abilities compared to some of the other characters, he is still able to think of clever solutions out of dangerous situations.

"I'm an insanely smart, genius sorcerer"

Chrome's enthusiastic passion.

Chrome is also exceedingly brave and loyal, managing to withstand Tsukasa's threats and refusing to speak about Ishigami Village or the progress of Senku's inventions.[20] In addition, while he is usually a loudmouth, he knows when to keep his mouth shut. He loves science and, in many ways, is an accomplished scientist in his own right, managing to create chemical reactions from the rocks he collected through frequent trial and error[16] (reactions which were only made known in the seventeenth century).

As someone with a lot of drive, Chrome is naturally quite combative, and his first instinct seems to be challenging people who may encroach on his self-imposed roles in the Kingdom. This is evident when he first hears of Senku,[21] when Tsukasa wants to "erase science",[22] when Why-man appears,[23] when Chelsea appears,[24][25] when Ryusui suggests he's a less capable explorer,[19] and when Taiju dares imply natural diamonds are stronger than science-made.[26]

Chrome appears rather naive when it comes to romantic affairs, or perhaps he's simply not interested in romance. He is unaware of what people are implying between him and Ruri,[27][28][29][30][31][32] but seems to think marriage is the next step once he's finished all his inventive projects.[33]

In addition, he is naturally inquisitive and loves helping make inventions. When he was left out of making the automobile, he was notably disheartened. When he managed to ride a hot air balloon for the first time, he was both amazed and frustrated by the progress of the modern era prior to petrification and wanted to learn about it. Also, in spite of his naivety when it comes to the outside world, he is shown to be wary of those he distrusts, evident when he did not trust him and Senku being alone in a cave with Magma as he believed Magma would attempt to murder them.

Chrome is selfless, especially when it comes to his friends, as he entered the village tournament that would determine Ruri's husband even though he's not a fighter, but did not mind who married her so long as she would be cured.[34] He refused to stay behind in the gathering of sulfuric acid for Ruri, being angered at Senku for wanting to do so. Instead, he was willing to put his life on a line looking after Senku, and expected the latter to do the same for him.[35]

Though at first threatened by the arrival of Senku,[36] another "sorcerer," the two quickly become close friends due to their mutual love of science[37] and he becomes Senku's main ally and confidant in Ishigami Village when it comes to their plans and inventions as the three often use their science and manipulation to find ways of creating a bloodless war against Tsukasa's Tsukasa Empire and later to go against the Why-man.

Chrome shares some of Senku's deviousness, but not to the same degree as Gen does. Regardless, thanks to his levelheaded thinking and analytical prowess, Chrome is the only member of the Five Wise Commanders to not be a pre-petrification human.

Abilities and Skills

  • Gifted Intelligence: Compared to the rest of Ishigami Village, Chrome is rather intelligent and curious. He and Kaseki are the only original members of Ishigami Village to possess any scientific knowledge. He was labeled as the village sorcerer due to his ability to use the materials around the village for "magic". He also has slightly-above average skill in arithmetic,[38] only considered an expert at it due to no one knowing better. He is rather experienced when it comes to exploring caves. This allowed him to realize that Moz had a hidden motive in trailing Amaryllis to their hideout on Treasure Island due to the effort that is needed for that. It was confirmed by Riichiro Inagaki that Chrome would have high grades and tie with Tsukasa in a school setting. Chrome's intelligence is best shown when he comprehended half of Senku's explanation about the basics of how sound travels through phones. He is also good at memorizing Senku's ridiculous "road maps" blueprints. With his quick wit, he unknowingly recreated past modern items: water wheel, metal detector, and drill. These feats garnered praise from the modern timers, who were all amazed that he created these things using only his imagination.[39][40][41] Although Chrome is disheartened when he learns that he has just recreated what modern men already had, geniuses like Senku and Xeno have taught him to not let that take away from his accomplishments. Chrome also came up with a strategy to face Stanley and his forces by suggesting they could simply petrify everyone, and have someone really far away ready to walk back and depetrify them after the fight is over. By the time the trip to the moon is about to begin, even the most conceited modern men like Yo admit that Chrome is far superior to him and the rest of the power team in science and intellect.[42]
  • Average physical prowess: In terms of physical ability, Chrome is rather average when compared to the likes of Kohaku, Magma, and Kinro, but is still skilled enough to hold his own against someone like Mantle. Despite this, Tsukasa himself noted that if he went on a voyage, he would more likely choose Chrome over Senku, despite Senku's superior intellect, because Chrome is more physically fit. In fact, Chrome ran from Ishigami Village to the Roppongi Hills Mori Tower, something that amazed his friends.[43] He often uses pole vaults to gather his materials and used this ability to pole vault his way around Tsukasa's traps.
  • Weak Spot Attack: Prior to the Grand Bout, Chrome spent some time honing his aim with a spear so that he could reliably hit Magma's "weak spot" (his crotch).[44]

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 Debut
19. Two Million Years of Being Appears
20. Stone Road Appears
21. Dawn of Iron Appears
22. Survival Gourmet Appears
23. The Smooth Talker Appears
24. Lightning Speed!!! Appears
25. By These Hands, the Light of Science Appears
26. A Shadow Alliance Appears
27. A Certain Scientists Wish Appears
28. Clear World Appears
29. Senku's Lab Appears
30. Death Green Appears
31. Friends Have Each Other's Backs Appears
32. Brain & Heart Appears
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 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 Appears
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 Appears
Vs. Hyoga Arc
46. Stone Wars Appears
47. Science Vs. Power Appears
48. Blades of Science Appears
49. To the Present Pictured
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 Absent
67. Full Mobilization Appears
68. Flame of Revolution Appears
69. Steam Gorilla Appears
70. Paper Shield Appears
71. Prison Break Appears
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 Appears
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 Absent
88. Wings of Humanity Appears
89. Adventures Appears
90. New World Map Appears
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 Petrified
105. The Island's Great Beauty Petrified
106. The Secret of Petrification Absent
107. To the Trump Card Science Vessel Petrified
108. Two Trump Cards Flashback
109. The Great Escape Absent
110. Beautiful Science Mentioned
111. Science Wars Absent
112. King of Three Dimensions Absent
113. Cryptography Science Absent
114. Silently, Science Pierces the Stone Fantasy
115. One Second, One Grain Absent
116. Miracle in Hand Absent
117. The Kingdom of Science Strikes Back Petrified
118. Silent Soldiers Absent
119. Science Soldiers Petrified
120. Top Secret Absent
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 Appears
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 Flashback
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 Appears
153. Science Wars Mentioned
154. Spy vs. Spy Pictured
155. Science Is Elegant Absent
156. Two Scientists Absent
157. Same Time, Same Place Absent
158. Who's the Scientist? Absent
159. Lock On Absent
160. Gunshots Echo Appears
161. Craft Wars Appears
162. Down the Earth-Stained Path Appears
163. Multifront Final Battle Appears
164. Re-Lock On Absent
165. Know the Rules, Make the Rules Absent
166. Ultimate Knight Absent
167. Different Strokes Appears
168. Corn City: Population One Million Appears
169. RISK or HEART Pictured
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 Pictured
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 Appears
183. Stone Sanctuary Appears
184. Fort Medusa Appears
185. Lovely Cleavage Plane Appears
186. To Each Their Own Blade Absent
187. Cyber Guerilla Flashback
188. What I Once Sought to Destroy Pictured
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 Fantasy
195. Treasure Hunter, All Alone Petrified
196. Scientist, All Alone Petrified
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 Pictured
222. Science Road Appears
223. 0 Appears
224. In Space Pictured
225. Docking Appears
226. Giant Step Appears
227. It Was You Appears
228. Life Stone Appears
229. Why-Man Pictured
230. Human Pictured
231. A Future To Get Excited About Pictured
232. Final Chapter: Dr. STONE Appears


  • His name, Chrome, is a reference to the chemical element chromium, its elemental symbol Cr and atomic number 24. Chromium gets its name from its tendency to form brightly colored compounds, so it may be a reference to Chrome's "Fire Bridge" (flame test reaction) that he shows off at his introduction.
  • Chrome's catchphrase is "ヤベー" (Yabē), which is usually translated to "baaaad". He uses it similarly to how one would use "cool" or "awesome".
  • Chrome's birthday is 2/4, which is the atomic number for chromium (24).
  • A running gag is Chrome being beaten by Kohaku after calling her gorilla and being depressed to hear the modern timers already know his invention.
  • Another running gag is that Chrome has had multiple attempts to confess his affections to Ruri (and vice versa) but he always fails to take initiative or gets otherwise interrupted, much to the disappointment of anyone rooting for them. When he finally did it, it was in such an underwhelming manner that everyone was still just as disappointed, including Ruri.
  • Chrome's English voice actor Matt Shipman is married to Yuzuriha's English voice actress Brittany Lauda in real life.


  1. Dr. Stone Manga: Chapter 19, Page 17
  2. Dr. Stone Manga: Chapter 22, Page 8
  3. Dr. Stone Manga: Volume 22 — Extras
  4. Dr. Stone Manga: Volume 4 — Q&A
  5. Dr. Stone Manga: Chapter 99, Page 18
  6. Dr. Stone Manga: Chapter 212, Page 7
  7. 7.0 7.1 7.2 Dr. Stone Manga: Chapter 197, Page 6
  8. 8.0 8.1 Dr. Stone Manga: Chapter 178, Page 18
  9. Dr. Stone Manga: Volume 19 — Extras
  10. Dr. Stone Manga: Chapter 103, Page 15, Chrome is petrified along with majority of the Perseus Crew.
  11. Dr. Stone Manga: Chapter 122, Page 2, Chrome is revived along with Yuzuriha and Ukyo.
  12. Dr. Stone Manga: Chapter 133, Page 19, Chrome is petrified while chasing Oarashi
  13. Dr. Stone Manga: Chapter 138, Page 1
  14. Dr. Stone Manga: Chapter 192, Page 21, Chrome is petrified along with the rest of the world.
  15. Dr. Stone Manga: Chapter 197, Page 6, Chrome is revived by Senku.
  16. 16.0 16.1 16.2 Dr. Stone Manga: Chapter 18, Page 15
  17. Dr. Stone Manga: Chapter 204, Page 5
  18. Dr. Stone Manga: Chapter 18, Page 18
  19. 19.0 19.1 Dr. Stone Manga: Chapter 89, Pages 10-11
  20. Dr. Stone Manga: Chapter 68, Pages 9-11
  21. Dr. Stone Manga: Chapter 18, Page 3
  22. Dr. Stone Manga: Chapter 68, Page 7
  23. Dr. Stone Manga: Chapter 96, Page 1
  24. Dr. Stone Manga: Chapter 173, Page 6
  25. Dr. Stone Manga: Chapter 209, Page 4
  26. Dr. Stone Manga: Chapter 183, Page 4
  27. Dr. Stone Manga: Chapter 21, Page 10
  28. Dr. Stone Manga: Chapter 27, Pages 14-15
  29. Dr. Stone Manga: Chapter 31, Pages 15-16
  30. Dr. Stone Manga: Chapter 59, Pages 7-9
  31. Dr. Stone Manga: Chapter 147, Page 11
  32. Dr. Stone Manga: Chapter 212, Page 9
  33. Dr. Stone Manga: Chapter 232, Page 10
  34. Dr. Stone Manga: Chapter 27, Page 16
  35. Dr. Stone Manga: Chapter 31, Page 14
  36. Dr. Stone Manga: Chapter 18, Page 10
  37. Dr. Stone Manga: Chapter 21, Page 2
  38. Dr. Stone Manga: Chapter 18
  39. Dr. Stone Manga: Chapter 52, Page 17
  40. Dr. Stone Manga: Chapter 97, Page 13
  41. Dr. Stone Manga: Chapter 161, Page 18
  42. Dr. Stone Manga: Chapter 222, Page 3
  43. Dr. Stone Manga: Chapter 88, Page 10
  44. Dr. Stone Manga: Chapter 34, Page 6

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