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'What we see with our eyes doesn't matter. These radio waves will detect anything out of the ordinary. You cant hide from radar! From the eyes of science!'

— Leonard, Chapter 181

Leonard Maxwell (レナード・マクスウェル Renādo Makusūeru) is a former member of the American Colony, and currently a member of the Kingdom of Science. He operates the radar and any other communication.


Leonard is a tall, sinewy man with a rather severe expression. His face is gaunt with deep cheekbones. He has large but narrow eyes with very small pupils in the shape of a PPI radar display. He has a large hooked nose with thin lips and a fairly deep mentolabial fold. He does not have eyebrows. His hair is long and wiry, fanning out in black dreadlocks away from his face, with his hairline accentuating the jagged lines of his petrification scar. The scar itself is similar to the shape of his pupils, two concentric circles centered on his glabella with mostly-symmetrical cracks coming from the outer circle at the positions of hours on a clock face.

His outfit is consists of a black, skin-tight, short-sleeved shirt, black gloves, baggy black pants, a wide belt, a skirt with the American colony's particular zigzag hem, and white boots that reach mid-shin. He also seems to have two black bands above his biceps matching his T-shirt, possibly indicating that he's wearing it off-the-shoulder. Like the rest of the Stanley's squad, he's also got oversized metal shoulder pads with tassels draping over the top of his torso. Below it, he's also got the zigzag metal collar.

After his revival, Leonard loses his petrification scars[4].


Leonard is serious and dedicated to his job as the main operator of any communication equipment for Stanley's troop. He is extremely vigilant, making sure he doesn't miss any radar activity and keeping a constant ear on the radio waves.

He answers most questions bluntly, directly, and informatively, befitting of a trained soldier. Despite that, it's still possible to get his façade to crack: the sudden increase in speed of the motorboat the scientists were escaping on caused him to be unable to finish his sentences properly[5] and most unexpected things they've done have caused him to raise his voice in alarm.[6]

Abilities and Skills[]

  • Radar: Prior to petrification, Leonard's job was as a military radar operator. As such, he's at least on-par with Ukyo's tracking skills using the equipment on the Perseus. With just his skills alone and a radar, he's able to keep tabs on the Kingdom of Science's location 24/7 at 100% accuracy[7]. Despite not having a map on the radar, Leonard is able to tell the exact location a signal is heading to an mark it down on a map behind him[8], and is even shown to be able to determine the distance from an object with his skills[9], almost being able to picture objects in his own head.
  • Marksmanship: Leonard is shown to be able to pin point the exact location of the Kingdom of Science on a map with a dart, showing he possesses very keen senses. However, his skills with darts don't translate over to fighting as he's never shown using a gun in battle.
  • Piloting: Leonard is shown to be able to pilot a plane several times. When attempting to chase the Kingdom of Science as they escape on motorcycles into the Amazon, he flies Stanley over to track the bike trails[10]. Leonard is never shown doing tricks and skills in the plane much like Charlotte during the aerial battle so it can assumed he only knows the basics.
  • Mental Resilience: Among the selected few that are mentally strong enough to withstand the millennia-long effects of the Petrification, Leonard possesses an extreme amount of determination.


  • Combat: Leonard is never shown in battle, and when forced into battle such as with the hostages, he is taken out rather easily. When Kohaku destroys the communications, Leonard is off-guard and doesn't fight back in time.
  • Emotions: Despite being a seemingly-cold and always-serious soldier, Leonard has had several moments of being taken off-guard by the Kingdom of Science such as when they began to pick up speed with the sails, or when the signal heading to the Panama Canal was a decoy.


South America Arc[]

Leonard Profile

Leonard is introduced sitting in Ukyo's usual seat on the Perseus, the radar controls. Rather dramatically, he tracks and pinpoints the escaping Kingdom of Science members by throwing a dart onto a map behind him. He seems to be quietly impressed with the radar setup on the Perseus, and uses it to say that they'll catch up with the smaller ship by nightfall. Sometime later, he's shocked by the sudden increase in speed of the other boat thanks to their sail.[11] Due to his keen eye, Leonard notices when the signal he's tracking splits into two, relaying the information to the others.[12] They choose to follow the blip heading towards the Panama Canal, and Leonard shouts out when they should have visual on the ship. It turns out it was a decoy without anyone aboard, so they quickly return to tailing the south-bound vessel.[13]

Catching up to the kidnappers, Leonard attempts to give chase in the airplane they took back from the Kingdom. Unfortunately, Senku had filled the engine with sugar causing it to fail midair. The plane crashes next to the escaping motorbikes, Leonard tucking and rolling to avoid injury.[14] Once the plane is fixed, Leonard sets out once more but this time in the pilots seat with Stanley riding behind him, out to find where the kidnappers are headed.[10] Since the motorbikes reach the Amazon jungle first, Leonard and Stanley are forced to turn back since Stanley can't snipe them through the canopy.[15]

Back on the Perseus, Leonard continues to surveil the radar equipment. He reassures the others, saying that it doesn't matter what the kidnappers are doing because they know that they're travelling down the Amazon river and that if they're on a boat, the radar is sure to pick them up.[16]

After Xeno messes with the Kingdom's transmission, Leonard notices and tells them it's definitely a hidden signal from Xeno as it's too regular to be natural, but doesn't know what about. Stanley uses his childhood-friend intuition to estimate what Xeno wanted to say, sending them to Araxá.[17] Once there, the group comes across Francois and captures them, after which Leonard informs them that Francois had sent a transmission before they had gotten caught. Francois replies that they sent "we've split into two teams" in Morse code to Corn City as a precaution.[18]

Leonard is the one who holds onto the communications, a very vital part of the battle. When Tsukasa, Hyoga and Kohaku arrive to the scene, they immediately deduce that destroying the communications will be the key to winning this war. After a short battle with Maya, and Hyoga and Tsukasa get taken out, Kohaku catches Leonard off guard and destroys the communications, to which Stanley is shocked that destroying it was their true goal.[19]

Leonard guarding the hostages

Leonard guarding the hostages.

After the communications are destroyed, Leonard appears quite flustered about letting his guard down, hiding his face and shaking his head[20]. As the rest of the American Soldiers charge in for the attack under Stanley's orders, Leonard stays behind to keep watch of the hostages, likely due to not being a fighter. Leonard alongside the hostages see as the Petrification Light begins shining on the horizon above the trees. Leonard is speechless at the prospect of a second worldwide petrification just like thousands of years ago and lets down his guard, giving Ukyo time to free the hostages. Leonard snaps back and notices that they have been freed but reacts too late as he is taken out by Matsukaze and Ginro. Leonard would go on to be petrified alongside the rest of his comrades as the petrification reaches the base.[21]

New Stone World Arc[]

Sometime after the Petrification event, Leonard's statue was gathered up by Suika, who previously woke up.

Seven years later, Leonard is revived by Taiju for their added support in construction for Superalloy City. He and his comrades are updated on the alliance between Xeno and Senku to defeat Why-man. He along with Maya and Charlotte look at the moon, in awe at the fact that there is someone there and they will attempt space travel in the Stone World.[22]

Globetrotting Arc[]

Leonard checks the radar and is alarmed that Why-man sent a threatening message in Morse code. He quickly informs Ukyo who says he was aware and they inform Senku's group.[23]

Chapter Appearances[]

Chapter Appearances
South America Arc
170. Staring Up at the Same Moon Absent
171. Staring at the Same Light Absent
172. Marked with an "X" of Wisdom Absent
173. Earth Race Debut
174. The Specter of the Panama Canal Appears
175. Ultra Race Across South America Appears
176. Net-Breaking Battle Plan Appears
177. Medusa Mechanism Absent
178. Science Scales Mountains Pictured
179. Bonds on the High-Wire Pictured
180. Sickening Yet Beautiful Appears
181. New World Science Appears
182. Diamond Heart Pictured
183. Stone Sanctuary Appears
184. Fort Medusa Pictured
185. Lovely Cleavage Plane Absent
186. To Each Their Own Blade Appears
187. Cyber Guerilla Pictured
188. What I Once Sought to Destroy Pictured
189. Our Dr. Stone Pictured
190. Science Transcends Life Absent
191. Divine Scream, Down to Earth Absent
192. Until We Meet Again Pictured
193. Our Stone World Absent
Globetrotting Arc
201. Morse Talk Appears
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 Absent


  • His name may have been inspired by the Japanese word for radar (レーダー rēdā).
  • His last name may be a reference to James Clerk Maxwell, who predicted the existence of electromagnetic waves, their speed, and the fact that they propagate through vacuum; using the equations now bearing his name: Maxwell's equations.
  • Despite his skills being seemingly similar to Ukyo's, Leonard specializes in radar (electromagnetic waves) while Ukyo specializes in sonar (acoustic waves). Both utilize the same scientific principles but the wave mediums differ.
  • Before his name was revealed, fans referred to him as "radarman".
  • Leonard does not appear to be a combatant like his fellow soldiers. During the battle in Araxa, Leonard takes a back seat from the fighting and keeps watch of their right flank[24], and when the soldiers charge into battle, Leonard stays behind and watches over the hostages. When forced into battle, he is taken out pretty easily.[25]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 Dr. Stone: Kingdom of Science Encyclopedia, Page 138
  2. Dr. Stone Manga: Chapter 192, Page 21, Leonard Maxwell is petrified along with the rest of the world.
  3. Dr. Stone Manga: Chapter 173, Page 10
  4. Dr. Stone Manga: Chapter 201, Page 8
  5. Dr. Stone Manga: Chapter 173, Page 14
  6. Dr. Stone Manga: Chapter 174, Page 9
  7. Dr. Stone Manga: Chapter 173, Page 11
  8. Dr. Stone Manga: Chapter 174, Page 3
  9. Dr. Stone Manga: Chapter 175, Page 7
  10. 10.0 10.1 Dr. Stone Manga: Chapter 178, Page 20
  11. Dr. Stone Manga: Chapter 173, Page 15
  12. Dr. Stone Manga: Chapter 174, Page 10
  13. Dr. Stone Manga: Chapter 175, Page 9
  14. Dr. Stone Manga: Chapter 176, Page 16
  15. Dr. Stone Manga: Chapter 180, Page 1
  16. Dr. Stone Manga: Chapter 181, Page 10
  17. Dr. Stone Manga: Chapter 183, Page 14
  18. Dr. Stone Manga: Chapter 186, Page 19
  19. Dr. Stone Manga: Chapter 188, Page 13
  20. Dr. Stone Manga: Chapter 189, Page 5
  21. Dr. Stone Manga: Chapter 192, Page 21
  22. Dr. Stone Manga: Chapter 199, Page 11
  23. Dr. Stone Manga: Chapter 201, Page 9
  24. Dr. Stone Manga: Chapter 187, Page 5
  25. Dr. Stone Manga: Chapter 192, Page 9

Site Navigation[]

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American Colony
Male Brody DudleyCarlos BarriosLeonard MaxwellMax AdamsStanley SnyderXeno Houston Wingfield
Female Charlotte BonyLuna WrightMaya Biggs
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Pre-Petrification Humans
Male Brody DudleyByakuya IshigamiCarlos BarriosGen AsagiriHyogaJoel GearLeonard MaxwellMax AdamsRyusui NanamiSai NanamiSenku IshigamiShamil VolkovStanley SnyderTaiju OkiTetsuya KinomotoTsukasa ShishioUkyo SaionjiXeno Houston WingfieldYakov NikitinYo Uei
Female Charlotte BonyChelsea ChildeConnie LeeDarya NikitinaHomura MomijiLillian WeinbergLuna WrightMaya BiggsMinami HokutozaiMirai ShishioNikki HanadaYuzuriha Ogawa
Unknown Francois