"When he fell with death right before him... his resolution was unwavering. Condemning him further is pointless. He won't betray them for a carrot or a stick."

— Tsukasa Shishio on Chrome's loyalty and determination, Dr. Stone, Chapter 68

Chrome (クロム Kuromu) is the alleged sorcerer - eventually scientist of Ishigami Village and Senku's friend. 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.[9]

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 Generals. He is also the only post-petrification human among them. Gifted in both chemical knowledge and crafting, Chrome tends to alternate between making chemicals with Senku and building with Kaseki.


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

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


Chrome is a high 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.[9]

Chrome cares little about a person's age when it comes to friendships, as he considers Kaseki as one of his greatest friends even though he's more than 50 years older than Chrome. 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.[9] He even becomes offended when Ryusui refers to himself as a pro adventurer while he refers to Chrome as an amateur. 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 (quite similarly to Senku), he is still able to think of clever solutions out of dangerous situations.

Since he has proclaimed himself a scientist, Chrome has become very defensive of his title; he despises people getting it wrong and mocking science.

Chrome's enthusiastic passion.

Chrome is also exceedingly brave and loyal, managing to withstand Tsukasa's torture and death threats and refusing to speak about Ishigami Village or the progress of Senku's inventions. 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[9] (reactions which were only made known in the seventeenth century), despite never knowing this knowledge beforehand and before Senku's arrival.

Chrome's naivety applies to romantic affairs as well. Kohaku explains to Senku that since his affections for Ruri are subconscious, it's cute to observe his innocent reactions whenever displaying jealousy or worry for Ruri.[10]

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 so Magma would not win (since Magma would ensure she did not survive her illness) and knew Kinro or Ginro would have better chances of winning, but did not mind who married her so long as she would be cured.[11] He has strong feelings for Ruri, but as stated by Kohaku, he doesn't seem to be aware of his own feelings. Even though Gen could potentially pose a threat to his friends, Chrome was devastated by seeing Gen's state by Magma, although fabricated. Before Senku revealed Gen's scheme, Chrome was vindictive because of the apparent murder, saying they will certainly find the culprit behind the attack.[12] 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.[13]

Though at first threatened by the arrival of Senku,[9] another "sorcerer," the two quickly become close friends due to their mutual love of science[10] and he becomes Senku's main ally and confidant in Ishigami village (aside from Gen) 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 Whyman.

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 Generals to not be a pre-petrification human.

Abilities and Skills

High 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,[9] 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 Mozu 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.[14][15][16]

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.

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 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.[17] 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).[18]

Chapter Appearances

v  d  e
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
v  d  e
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
v  d  e
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
v  d  e
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
v  d  e
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
v  d  e
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
v  d  e
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
v  d  e
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
v  d  e
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


  • His name, Chrome, is a reference to the chemical element Chromium, its elemental symbol Cr and atomic number 24.
  • 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".


  1. Dr. Stone Manga: Volume 4 — Q&A
  2. Dr. Stone Manga: Chapter 99
  3. 3.0 3.1 Dr. Stone Manga: Chapter 178
  4. Dr. Stone Manga: Volume 19 — Extras
  5. Dr. Stone Manga — Chapter 103, Chrome is petrified along with majority of the Perseus Crew.
  6. Dr. Stone Manga — Chapter 122, Chrome is revived along with Yuzuriha and Ukyo.
  7. Dr. Stone Manga — Chapter 133, Chrome is petrified while chasing Oarashi
  8. Dr. Stone Manga: Chapter 138
  9. 9.0 9.1 9.2 9.3 9.4 9.5 Dr. Stone Manga: Chapter 18
  10. 10.0 10.1 Dr. Stone Manga: Chapter 21
  11. Dr. Stone Manga: Chapter 27
  12. Dr. Stone Manga: Chapter 26
  13. Dr. Stone Manga: Chapter 31
  14. Dr. Stone Manga: Chapter 50
  15. Dr. Stone Manga: Chapter 97
  16. Dr. Stone Manga: Chapter 161
  17. Dr. Stone Manga: Chapter 88
  18. Dr. Stone Manga: Chapter 34

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