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Ibara (イバラ) is the former minister of the Petrification Kingdom and the main antagonist of the Treasure Island Arc.

Initially serving as minister to the Head of the Kingdom, he usurped power by using the petrification device on the latter and establishing a dictatorship over the island.


Ibara is an extremely tall and muscular middle-aged man that stands at almost double the height of Kirisame. He has a thin face with sunken cheeks, a prominent nose, a thin, twirled mustache, and a long goatee tied near the end. Triangle-patterned tattoos run along his body, from the top of his head along his spine to the fronts of his shins and feet. Similar to Soyuz and his father, he has larger-than-average earlobes.

He wears a white robe with a stone or metal collar, tied at the waist with a dark sash. He wears two stone pauldrons with spikes around the top edge of them and a similar-looking hat. His shoes are heavily platformed and add a lot to his imposing height.


Ibara is merciless and manipulative, only caring about what he himself stands to gain. He is paranoid due to him hiding the secret that the true leader is petrified and as such is swift and cruel in dispatching threats. Despite his paranoia, Ibara's true nature is a dark, scheming persona that gives off a terrifying presence.

He does not value his followers, no matter their loyalty, as shown when he wanted the entire island petrified despite his own people on it and even petrified Kirisame once his evil nature is exposed. He occasionally takes risks, such as when he petrified the whole island under the assumption that the Kingdom of Science had more revival fluid.[6] Additionally, Ibara seemed unworried about the truth about the head being revealed upon his own defeat.

Minister Ibara

Ibara's first appearance.

He is also a pervert, grabbing women for his harem and claiming them as his "reward" for all the hard work he has done, despite obvious protests. In addition, he tried to grab Kohaku to feel her up and almost had his hand snapped by her before Moz intervened,[7] and later to supposedly teach Ginro about love before "satisfying" the master.[8]

Ibara was the one who created the rule to not make new things, as this would allow the islanders to fight back and kill him; he additionally forbade leaving, knowing full well that he would end up dying alone as most of the islanders despise him. He is also callous and an "ask questions later" type. Upon finding the boat belonging to the Kingdom of Science off the shore, he has them petrified, despite it being obvious they weren't from the island and stole their supplies and clothing. While he deems science as sorcery, he can be very cautious when dealing with it, as he quickly deduced Moz allied with the invaders after spotting an earpiece and later fled upon seeing Hyoga revived.

Ibara enjoys battle, as while an initially angry Senku ran from him, he realized he was actually setting a trap. He is not above giving his enemies compliments, as he was impressed by Senku's plans.

He displays his cruelty when he shows no remorse or hesitation about murdering infants. Even though he enjoys using the Medusa device, he is still fearful of its power being used against him. When Senku attempted to use a phone to activate the Medusa device, he quickly discarded it in fear, although the device failed to activate due to not being close enough to the source of the voice command. He takes great pride in his intelligence, thinking about how he is always cautious. He also believes that those who are arrogant because of their intelligence are the first ones to fall, which is ironic considering he clearly thinks highly of himself, which Senku reiterates back to him when the former outwits Ibara before finally petrifying the evil minister.

Abilities and Skills[]

As the de facto leader of the Petrification Kingdom, Ibara held full control over it and was second in authority only to the Head of the Petrification Kingdom, which he used as a puppet leader.

  • Intuition and Strategy: Ibara is an exceedingly intelligent man. He was able to tell that there were intruders on the island based on witnessing a piece of glass Kohaku broke, which matched the glass he had found on the Perseus. He also quickly realized the actual purpose of Kohaku's earring and devised a countermeasure against the Kingdom of Science based on Moz wearing the same earring. During his confrontation with Senku, he deliberately drove him towards a cliff where he wouldn't be able to escape from him. When the rope attached to the petrification device ripped while he was having a tug of war over it with Ryusui and Senku, he quickly threw and bound his sash to their drone. He predicted them letting go of their rope to let the petrification device move toward him and responded by throwing his hat at it, moving the device to them instead.
  • Spatial Awareness: Having trained to protect himself against the petrification device's beams, Ibara possesses a very acute sense of distance. He knows exactly how far to stand to be out of the beam's reach,[9][10] or how close he needs to be to activate it.[11] He can also estimate the precise radius and timing he needs for the beams instantly.
  • Physical Abilities: While not as powerful as Moz or Kirisame, Ibara has proven himself to be a capable combatant, as he was able to overpower and fatally wound Ginro (who would've died had Kohaku not tricked Ibara into petrifying them). Despite his old age, he is fast and possesses great strength. Later, he was shown to be able to overpower Senku and Ryusui in a game of tug-of-war.


5/5 A
4/5 B
5/5 A
Ibara's stats, according to Volume 14


Ibara uses stone claws as his weapon of choice, wearing single parts of them on his fingers.


Ibara young

Ibara claims the Medusa.

As a descendant of the six astronauts, Ibara was born on Treasure Island.

Ibara was once a warrior for the Petrification Kingdom before being promoted to Minister. He later managed to steal the Medusa and use it to petrify Soyuz's father. Whether this came from a personal vendetta or simply to take control of the island is unknown. He then attempted to murder the infant Soyuz for witnessing the crime, recalling how his bloodline recalls everything. Fortunately, the boy was safely sent away to the mainland of Japan by a woman who escaped her pursuers. Hiding his evil deeds, Ibara took command of the island, unaware that his sins would one day come back to haunt him.


Treasure Island Arc[]

Ibara introduced

Ibara pleased with their rewards

Ibara and his men investigated the Perseus and the minister took an interest in the clothing of his petrified foes. He realizes that they must be from the other side of the world from the 100 stories he has heard about. The minister overheard yelling coming from the hills but thought little of it after Kirisame discovered it was a couple, seemingly on a date. [12]

While investigating the Perseus more, Ibara spotted a barrel that moved on its own. As he tried to discover what the cause was, he heard glass shattering.[13]

He and his men find a simple new beast roaming the forest but while his men think nothing of it, Ibara is certain that more invaders have arrived. The minister tells his men to search every village in order to find the enemy. [14]

He also continues to hold the harem selection. He selects three girls: Amaryllis, Kohaku, and Ginny.[15]

Wanting to draw out any invaders, he had the statue of Ryusui Nanami out on display. He told everyone on the island if they weren't invaders, they would have no problems destroying it. He is utterly flabbergasted when Kohaku completely demolished a statue.[16]

Ginro stabbed

Ginro stabbed by Ibara.

After regaining his wits, Ibara was angered to discover that Ginro had really usurped the original ruler, who was petrified. When Ginro is distracted, Ibara impales him but he is saved by Kohaku, who nearly reveals the truth to the island about the Head, but Ibara orders them to be petrified to silence them. Unbeknownst to him, this was a ruse to get Ginro petrified to save his life. The pair then put their bets on Senku to win. [17]

The next day, Oarashi reveals to Ibara an invader who attacked him and several soldiers. Ibara listened as Oarashi described the invader as being strong as Moz.[18]

Ibara later caught sight of Moz wearing an earpiece when he recalled Kohaku wearing one. Suspecting Moz may be involved with the invaders, he tells Kirisame this.[19]

When the invaders attack, Ibara had Kirisame take a fake replica of the weapon to expose the enemy. The old minister then has his soldiers commandeer the Perseus in order to trap the enemies on the island. Ibara then helped his soldiers corner the Perseus crew but was surprised to witness the revival of Hyoga.[20]

Still shocked to see a statue being revived, he soon recalls Ryusui being a statue. Realizing that his enemies have a means to free them from petrification, the old minister flees from the scene. To defeat his foes, Ibara ordered Kirisame to petrify everyone on the island.[21]

Ibara ordered Oarashi to go to the island's center and carry out the task, as Kirisame protests this. Just then, Ibara witnessed Taiju Oki reveal to the island that the Head is actually petrified. After Kirisame questions this revelation, Ibara petrifies a tearful Kirisame while mockingly thanking her for her service. Just as he tries to put his plan into action, Yo Uei shoots his hand and claims the weapon. [22]

Falling behind Yo in the ocean, Ibara issues a command at the device to activate it. [23]

Swimming out of the beam's range, Ibara reclaims the device after Yo drops it. He notices Oarashi and plans to have his goal put into action. Having a contingency plan, he places a range and time to activate. Ibara gloats to himself on how Oarashi will lead everyone to the island's center to petrify them. [24]

Ibara defeated

With combined strength of Ryusui and Senku, Ibara is ultimately petrified.

He investigates the island to revel in his success and discovers Soyuz has also returned but failed to properly tell the other islanders.[25] However, he was shocked that Senku was still freed, due to pouring the Revival Fluid on himself. Senku then has the mobile lab hit Ibara. [26]

Emerging from the vehicle, Ibara stabs him in the shoulder when he reaches for the Petrification Weapon. Desiring to finish Senku, he challenges him, but the latter runs and Ibara pursues him, and the two engage in a battle of wits once it is revealed that Senku laid out traps. Ibara then corners Senku after calling his bluff; he asks Senku for his name, and the latter tells him while Ibara wishes him farewell. However, he hears a noise, and a drone comes up with Ryusui on it (having been revived when Ibara unknowingly shattered the formula on him), and he takes the weapon. [27]

After a fierce tug-of-war, he laughs that Ryusui ended up petrified and breaks into pieces. However, he finds that Ryusui placed a voice com on the weapon. Recalling what it could do, he panics when Senku activates the device. Ibara then ends up petrified. [5]

New America City Arc[]

Following the end of the battle, the Petrification Kingdom is told the truth about the minister manipulating them and they subsequently see Soyuz as the new leader.[28][29]



Senku Ishigami[]

Ibara first encountered Senku on the Perseus when the Kingdom of Science raided it. At first, the Kingdom of Science was overpowered and ended up cornered, however, Senku revealed that they led them into believing they were cornered and revived Hyoga. Upon seeing the revived Hyoga and Ryusui, Ibara quickly figures out the statues can be revived and flees, finally starting to see the Kingdom of Science as a threat.

Later, after the Medusa covers the entire island, Ibara returns to the island, sure of his victory, only to see Senku still alive, infuriating him. Then, the two engage in a battle of wits, which ultimately ends with Ibara being outsmarted by Senku with the assistance of Ryusui and being subsequently petrified.

Chapter Appearances[]

Chapter Appearances
Treasure Island Arc
101. Treasure Chest Absent
102. Perseus, Ship of Science Absent
103. Light of Hope and Despair Absent
104. Men of Forensics Absent
105. The Island's Great Beauty Absent
106. The Secret of Petrification Absent
107. To the Trump Card Science Vessel Debut
108. Two Trump Cards Appears
109. The Great Escape Pictured
110. Beautiful Science Appears
111. Science Wars Appears
112. King of Three Dimensions Pictured
113. Cryptography Science Absent
114. Silently, Science Pierces the Stone Absent
115. One Second, One Grain Absent
116. Miracle in Hand Appears
117. The Kingdom of Science Strikes Back Pictured
118. Silent Soldiers Absent
119. Science Soldiers Mentioned
120. Top Secret Appears
121. Medusa's True Face Appears
122. Brain-Battle Puzzle Pieces Flashback
123. The Battle of Wits' Deal Game Fantasy
124. The Invention of God and the Devil Pictured
125. The Decisive Three-Dimensional Battle Absent
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 Mentioned
New America City Arc
139. First Dream Mentioned
140. New World Plots Absent
141. First Team Mentioned
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 Absent
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
Moon Mission Arc
213. Unknown Known Absent
214. Stone World's Earth Defense Force Absent
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 Absent
224. In Space Absent
225. Docking Absent
226. Giant Step Absent
227. It Was You Absent
228. Life Stone Flashback
229. Why-Man Flashback
230. Human Flashback
231. A Future To Get Excited About Absent
232. Final Chapter: Dr. STONE Absent


  • His name Ibara (イバラ) is the Japanese word for Thorn/Thorny/Briar.[30]
  • While it has not been confirmed, it is heavily implied that after Ibara rapes the women in the inner palace, he will kill or petrify them once they learn the truth about his schemes. This was further evident when he tried to kill Ginro after Ginro realized the Head was dead and when Ibara petrified Kirisame for the crime of discovering the truth.
  • Whenever Ibara's evil nature is prominent, the whites of his eyes turn pure black.
  • He is the only villain to not be revived sometime after being defeated by the Kingdom of Science.


  1. Dr. Stone Manga: Volume 22 — Extras
  2. Dr. Stone Manga — Volume 14 Worker Files
  3. Dr. Stone: Kingdom of Science Encyclopedia, Page 118
  4. Dr. Stone Manga: Volume 19 — Extras
  5. 5.0 5.1 Dr. Stone Manga: Chapter 137
  6. Dr. Stone Manga: Chapter 134, Page 8
  7. Dr. Stone Manga: Chapter 111, Page 10
  8. Dr. Stone Manga: Chapter 120, Page 8
  9. Dr. Stone Manga: Chapter 134, Page 10
  10. Dr. Stone Manga: Chapter 131, Page 12
  11. Dr. Stone Manga: Chapter 132, Page 19
  12. Dr. Stone Manga: Chapter 107, Page 14
  13. Dr. Stone Manga: Chapter 108, Page 17
  14. Dr. Stone Manga: Chapter 109
  15. Dr. Stone Manga: Chapter 110
  16. Dr. Stone Manga: Chapter 116
  17. Dr. Stone Manga: Chapter 121
  18. Dr. Stone Manga: Chapter 124
  19. Dr. Stone Manga: Chapter 126
  20. Dr. Stone Manga: Chapter 127
  21. Dr. Stone Manga: Chapter 130
  22. Dr. Stone Manga: Chapter 131
  23. Dr. Stone Manga: Chapter 132
  24. Dr. Stone Manga: Chapter 133
  25. Dr. Stone Manga: Chapter 134
  26. Dr. Stone Manga: Chapter 135
  27. Dr. Stone Manga: Chapter 136
  28. Dr. Stone Manga: Chapter 139
  29. Dr. Stone Manga: Chapter 140
  30. https://twitter.com/CDCubed/status/1135297904690597888

Site Navigation[]

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Petrification Kingdom
Male Head of Petrification KingdomIbaraMatsukazeMozOarashiSoyuz
Female AmaryllisKirisame
v  e
Post-Petrification Humans
Ishigami Villagers
Petrification Kingdom
Soyuz's fatherIbaraMatsukazeMozOarashiSoyuz