"I am a technology kid, who's excited by mecha, space and Doraemon! I will save all of humanity, without exception, with the power of science!"

— Senku Ishigami, Dr. Stone, Chapter 4

Senku Ishigami ( (いし) (がみ) (せん) (くう) Ishigami Senkū) is the main protagonist of Dr. Stone, and is friends with Taiju Oki and Yuzuriha Ogawa. He is known for his catchphrases, one of which is "Ten Billion Percent".[5] He was de-petrified half a year before Taiju was, and eventually created the Revival Fluid with Taiju's help.[6] In the Stone World, Senku wants to rebuild civilization and establish a Kingdom of Science.

He was the first-prize champion in the Village Games, and currently holds the title of Village chief in Ishigami Village, where he is widely a legend thanks the late Byakuya’s influences through out his founding village’s community.

Senku is the de facto leader of the Kingdom of Science. Later, as a member of the Five Wise Generals, Senku provides the ideas and initative for their large scale plans; he councils with Chrome, Gen, Ukyo, and Ryusui before taking action.

Appearance

Senku is a slim, yet reasonably toned young man of average height with white (light green in the anime,) brush-like hair that spikes up, with two locks of hair that drape over his face, and sharp red eyes. Kohaku admitted that he looks like a "lady killer" to her, implying he is handsome.[7] Luna also expressed an attraction to Senku.[8]

His stone markings are two, symmetrical diagonal lines on top of his inner eyebrows.

Pre-Stone World, he wore a typical school uniform with a lab coat over it. After waking up in the Stone World, he switched to wearing animal skin clothing in a rudimentary manner. After Yuzuriha's de-petrification, he gets these clothes patched up in a better manner. He has Albert Einstein's mass–energy equivalence formula (E = mc2) written in his own blood across the breast of his shirt.

During Minami's photoshoot for his launching of the hot air balloon, Senku wore modern outfits fashioned by Yuzuriha.[9]

Personality

Senku is a straight-forward, confident and highly logical individual who can come off as arrogant. Even so, his borderline-overconfidence does not cloud his judgment, as he is often backed up by his superior and vast knowledge of science. Senku never belittles those who are less knowledgeable than him. Rather, he encourages and inspires everyone around him to do better. Because of his charisma and caring nature, people tend to gather around him, both allies and supporters alike. However, he can act over-the-top at times when he is excited over a creation or at the discovery of something new. Despite his usual appearance brimming with confidence and determination, Senku is not above berating himself, such as when Kohaku noticed the North Star being slightly off its location while he didn't assume so from the amount of time that has passed being petrified.[10]

Senku brimming with confidence despite the Stone World.

Senku has a very logical mind, believing that there is nothing science cannot explain, even if it takes a long time for science to properly understand any one thing.[11][12]

Although he has a strong sense of justice, he often bends the rules, withholds information, and manipulates others to get what he wants, but if only for the better of his allies. He often acts as if he builds inventions and uses people for his own interest (such as glasses, and the automobile), but beneath his arrogance and manipulative nature lies a genuinely selfless and kind heart. This is proven time and time again, particularly when Senku mourns his adoptive father's death. During their decisive battle, Tsukasa notes that despite Senku's apparent cold rationale, his greatest weakness is his inability to abandon his friends, having witnessed his kindness firsthand with Yuzuriha taken hostage.[13][14]

Unlike Taiju, Senku seems averse to the idea of romance. He seemed disturbed when Kohaku worded her praise for him strangely, claiming she had "fallen for him."[15] In addition, he immediately divorced Ruri, in the few seconds of their marriage. He was also completely unaffected by Amaryllis' attempts to charm him, much to her chagrin. He believes a brain filled with love is most illogical, but he does support his friends, such as Taiju's relationship with Yuzuriha, and Chrome's relationship with Ruri. Despite all this, Gen believes that one day, after all the conflict is over, he may consider the idea of romance.

What Senku lacks in physical ability, he more than makes up for with his determination. He counted the time he was petrified to the last second for nearly 4 millennia, and willingly faced death[13] by Tsukasa's hand because of his refusal to end his science and to protect Yuzuriha without being fazed. Senku also defeats Ibara with his quick thinking and help from Ryusui Nanami. Senku is simply someone who refuses to give up on a task no matter how arduous.[11]

Abilities and Skills

A young Senku experimenting with a new invention.

Genius Intelligence: Senku Ishigami is a genius with an encyclopedic knowledge of all things scientific. He is well versed in chemistry, physics, engineering, geology, biology and mathematics.[16][17][15][18][7][19] Senku is able to easily create various useful tools and gadgets, medicine, and most notably, the de-petrification elixir, despite the limited materials of the Stone World. Tsukasa calls him "the sharpest, most intelligent man in the world".[20] In addition to his scientific knowledge, Senku also possesses great resourcefulness and an analytical mind, seemingly never having a shortage of options at his disposal. For whatever he lacks, he has an ally who can offer their strength. He also possesses great mental fortitude, able to think quickly on his feet and keep his cool in the most dire of situations. Out of the current active characters, his mental assets are rivaled only by his former mentor, Dr. Xeno.

  • Craftsmanship: As a child, he designed and built a functioning miniature rocket ship, alongside many other advanced and experimental machines.[13] However, Senku doesn't compare to a master craftsman like Kaseki, in terms of building skills, as Kaseki has far more experience than him.
  • Tactical intelligence: In addition to his scientific intelligence, he appears to have some skill as a strategist. He managed to coordinate the villagers and even some of Tsukasa's army whom he converts to his side in an effective bloodless war against Tsukasa's Empire of Might. Similarly, he manages to have Kohaku, Ginro, and Amaryllis infiltrate the chief of Treasure Island's harem as spies and manages to communicate with Kohaku and develop a strategy to cleverly gather the scattered petrified pieces of his friends along with the precious stones from the Soyuz chamber.
  • Eidetic memory: Senku remembers every compound and sequence of his inventions. He has never once been wrong in the making of tools for the Kingdom of Science, and has an enormous amount of knowledge in aformentioned science fields.
  • Charisma: Though arrogant and eccentric, Senku seems to have a good understanding of people and how they think. He uses his many creations to charm those who were suspicious of him (like ramen, glasses, and medicine)[7] to slowly warm up to around him. Senku is also a capable leader, who is good with his words, able to motivate and lead the villagers into an effective army against Tsukasa's Empire of Might. He has personally gained the loyalty and respect of his allies (and enemies) through his hard work and determination.
  • Linguistic Proficiency: Senku seems to be fluent in both Japanese and English. He understood Ukyo and Gen's while they were speaking English through the buried phone in order to conceal their conversation from the others present. He was able to speak to understand the discussion between Taiju and Dr. Xeno with no problems.[21] He understood and communicated with Dr. Brody with no problem. [22]

Weaknesses

Low physical prowess: Senku is below average in terms of physical ability, lacking physical strength. He was unable to hold Homura, a petite woman shorter than 5 feet, after managing to grab hold of her. He also admits that he won't stand a chance against someone as strong as Kohaku in a fight (although it's not really a fair comparison, given her strength and her status as a warrior).[15] In a bonus chapter, Kohaku gives a small description on the physical abilities of the main characters. Senku is at the bottom at around 3 points, Chrome at 5, Ginro at 100, Kinro at 500, and Kohaku herself at 1000.[7] Similarly, Senku has poor stamina, and tends to get physically exhausted rather quickly. He is also very vulnerable to hypothermia, only being able to withstand cold water for a short amount of time.[23]

Average craftsmanship: While not bad in terms of craftsmanship, he lacks the natural talent in it. It took him several months to learn how to do pottery, and even then, it could only be considered decent. He has also failed miserably at making glassware, and for more detailed and intricate objects, requires expert craftsmen like Kaseki to make them. He also requires Yuzuriha to piece together the broken stone statues as he lacks her talent and precision.

Lack of cooking skills: While not a weakness per se, he is not an exceptional cook. He is shown to know how to cook, but lacks experience and quality ingredients. While he knows the process of how to make food, most of the time, the more complicated food does not taste good. While he was able to make cotton candy and cola, more complicated foods, such as wine, ramen, and bread prove to be terrible tasting. While in the ramen's case, part of it is due to not having the exact ingredients (he uses foxtail to make flour instead of wheat). When he tries to create bread with all of the proper ingredients on hand for the first time, it comes out so horrible that no modern person is capable of eating it (though the Ishigami Village tribe loves it because they have only ever eaten fish and have never tried bread before).

Bad luck: Throughout the series, despite his high intelligence and ability to overcome obstacles, he tends to run into trouble often due to his horrific luck. Gen, at one point, quips to Senku (while they are trying to make gunpowder to stop Tsukasa's army and fail) that Senku always has crappy luck. In the Petrifaction arc, where he goes to Treasure Island, after all their resources and options have been exhausted as he and the Kingdom of Science are cornered by Ibara, Mozu, and their army, Senku is even forced to use his worst trump card: reviving Hyoga (a rather unpredictable and cruel man willing to manipulate and kill anyone who gets in his way) to have a fighting chance against Ibara and Mozu despite the strong possibility Hyoga will immediately overpower the Kingdom of Science and/or learn of the petrification device afterwards. Later on, Ibara uses the petrifaction device to petrify everyone but himself. When detailing travel by Vikings, a storm hits but they still reach America, due to Chrome. While commencing their exploration of United States, the crew is attacked by alligators as Gen once again makes a remark about how Senku's luck is non-existent and every one of his hypotheses about the worst-case scenario usually turn out to be true.[24]

Chapter Appearances

Chapter Appearances
v  d  e
Stone Formula Arc
1. Stone World Debut
2. Fantasy Vs. Science Appears
3. King of the Stone World Appears
4. Pure White Shell Appears
v  d  e
Vs. Tsukasa Arc
5. Yuzuriha Appears
6. Taiju vs. Tsukasa Appears
7. The Gunpowder Adventure Appears
8. Raise The Smoke Signal Appears
9. Senku vs. Tsukasa Appears
10. Student of Science Appears
11. Weapon of Science Appears
12. Epilogue of Prologue (End of Part 0) Appears
v  d  e
Kingdom of Science Arc
13. Part 1: Stone World: The Beginning Appears
14. Those Who Have Faith Appears
15. Two Kingdoms of the Stone World Appears
16. Kohaku Appears
17. Nasty Looks Appears
18. Sorcery Showdown Appears
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 Flashback
44. One Hundred Nights, One Thousand Skies Petrified
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 Appears
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 Hear 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 Pictured
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 Appears
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 Appears
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 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 Pictured
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 Appears
135. Counting Appears
136. Medusa Vs. Science Appears
137. Last Man Standing Appears
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 Appears
154. Spy vs. Spy Appears
155. Science Is Elegant Appears
156. Two Scientists Flashback
157. Same Time, Same Place Flashback
158. Who's the Scientist? Appears
159. Lock On Appears
160. Gunshots Echo Appears
161. Craft Wars Appears
162. Down the Earth-Stained Path Pictured
163. Multifront Final Battle Appears
164. Re-Lock On Appears
165. Know the Rules, Make the Rules Appears
166. Ultimate Knight Appears
167. Different Strokes Pictured
168. Corn City: Population One Million Appears
169. RISK or HEART Appears
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

Trivia

  • Senku's name is composed of "sen" ( thousand) and "kū" ( sky) to create Senkū (Thousand Sky), which is homophonous to (せん) () , meaning "pioneer". Ishigami is composed of "ishi" ( stone) and "kami" ( god) to create Ishigami (Stone God).
    • Senku shares a motif with Taiju and Yuzuriha in that his name contains "kū" ( sky) in his name, which correlates to the theme of "land, sea, and sky".
  • Senku has been ranked 1st place in the 1st and 2nd Character Popularity Polls.
  • There have been women who have shown signs of attraction to him:
    • Kohaku claims to have fallen for him when they first meet, leaving him disturbed. Though she clarifies that she means it in a platonic manner, she admits in chapter 22 that he looks like "lady killer" to her.
    • Ruby states that she is interested in a man who will dote on her and she is so impressed by the ramen that Senku makes that she asks what his type is. [7]
    • He marries Ruri, but divorces her almost immediately.
    • In chapter 51, when Senku asks Gen about Homura, to which Ginro, Shovel, and the Sisters assume he's asking about her romantically. He later rebuffs any attempts to take advantage of Homura after catching her. [25]
    • After Senku promises Nikki that he will protect Lillian Weinberg's last recorded song, Nikki also claims she could fall for him, something he casually shrugs off. [26]
    • He was immune to Amaryllis' charms. [27]
    • He is kissed by Kohaku and reacted indifferently. [28]
    • He charms Luna to get information out of her and leaves her with a crush on him, then later Luna asks if he'll be her boyfriend. [29] The crew later comment that Senku has no interest in romance.
  • He states Doraemon is what inspired him to become a scientist.
  • He demonstrates a love for video games, making references to Super Mario Bros, Civilization, Dragon Quest, and Monster Hunter (Monster Hunter having a particular shout out in chapter 63).
  • He has three main catchphrases: he claims "10 billion percent" when he is certain of something, "1 mm" when he claims how impossible something is, and "This is Exhilarating ("Get Excited" in the English dub)" when a new development occurs or he manages to further his scientific developments.
  • A recurring gag involves Senku's previous marriage and divorce being referenced:
    • When Hyoga approaches Senku to form a partnership, Senku tries to brush it off by asking if it was his version of an awkward love confession and then states how he is married (and then corrects that he is now divorced). [30]
    • When Amaryllis asks about Chrome's relationship with Ruri, Francois points out that Ruri was once married to Senku before Senku divorced her, shocking Taiju and Amaryllis. [31]
    • When Luna asks Francois about dating Senku, Kinro brings up how Senku is a divorcé, to her shock. [29]
  • He shares traits with Yoichi Hiruma from Riichiro Inagaki's previous series Eyeshield 21.
    • Grinning when conducting the best situation to meet his ends.
    • High intelligence, photographic memory, and cunning.
    • Proficient with arithmetic, being able to calculate long periods of time down to the last second.
  • Senku's bowel movements prior to petrification were pretty regular.[32]

References

  1. Dr. Stone Manga: Chapter 56, Page Gen reveals Senku's Birth date.
  2. Dr. Stone Manga: Chapter 1, Page Senku is Petrified along with all of Earths Human Population.
  3. Dr. Stone Manga: Chapter 13, Page Senku Awakens from petrification.
  4. Dr. Stone Manga: Chapter 15, Page Senku is Revived from having his Cervical Plexus snapped.
  5. Dr. Stone Manga: Chapter 1
  6. Dr. Stone Manga: Chapter 4
  7. 7.0 7.1 7.2 7.3 7.4 Dr. Stone Manga: Chapter 22
  8. Dr. Stone Manga: Chapter 158
  9. Dr. Stone Manga: Chapter 93
  10. Dr. Stone Manga: Chapter 20
  11. 11.0 11.1 Dr. Stone Manga: Chapter 3
  12. Dr. Stone Manga: Chapter 14
  13. 13.0 13.1 13.2 Dr. Stone Manga: Chapter 10
  14. Dr. Stone Manga: Chapter 70
  15. 15.0 15.1 15.2 Dr. Stone Manga: Chapter 17
  16. Dr. Stone Manga: Chapter 2
  17. Dr. Stone Manga: Chapter 8
  18. Dr. Stone Manga: Chapter 18
  19. Dr. Stone Manga: Chapter 34
  20. Dr. Stone Manga: Chapter 26
  21. Dr. Stone Manga: Chapter 152
  22. Dr. Stone Manga: Chapter 168
  23. Dr. Stone Manga: Chapter 55
  24. Dr. Stone Manga: Chapter 148
  25. Dr. Stone Manga: Chapter 62
  26. Dr. Stone Manga: Chapter 66
  27. Dr. Stone Manga: Chapter 105
  28. Dr. Stone Manga: Chapter 107
  29. 29.0 29.1 Dr. Stone Manga: Chapter 163
  30. Dr. Stone Manga: Chapter 80
  31. Dr. Stone Manga: Chapter 138
  32. Dr. Stone Manga: Chapter 1, Page 46


Site Navigation

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Kingdom of Science
Male ChromeGen AsagiriGinroHyogaKasekiKinroKokuyoMagmaMatsukazeMozuRyusui NanamiSenku IshigamiTaiju OkiTsukasa ShishioYo Uei
Female Homura MomijiKirisameKohakuMinami HokutozaiNikki HanadaRuriSuikaYuzuriha Ogawa
Unknown Francois
v  e
Pre-Petrification Humans
Male Dr. BrodyByakuya IshigamiCarlosGen AsagiriHyogaMaxRyusui NanamiSenku IshigamiShamil VolkovStanley SnyderTaiju OkiTsukasa ShishioUkyo SaionjiDr. XenoYakov NikitinYo Uei
Female Connie LeeDarya NikitinaHomura MomijiLillian WeinbergLunaMinami HokutozaiMirai ShishioNikki HanadaYuzuriha Ogawa
Unknown Francois
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