List of Astro Boy Characters - Major Characters

Major Characters

Astro Boy (Tetsuwan Atomu; "Mighty Atom" in Japanese versions) - The robot boy fashioned after Tobio Tenma (Astor Boynton III in the B/W American translation) by his father, the head of the Institute of Science in the year 2000. Aside from possessing the strength of 100,000 horsepower (later 1,000,000) and the kind personality of a child, he has what are called his "seven amazing powers": jet-powered flight, multilingualism, analytical skills, headlight eyes, super-sensitive hearing, hidden weapons in his back, and the ability to tell if a person is good or evil. In addition, he has a built-in geiger counter and shortwave communication system.

Uran (Uran)/Zoran/Astro Girl - Astro's cybernetic sister with a shown adoration towards Astro; she is a superhuman robot with a naive, tomboyish personality. Constructed by Dr. Ochanomizu as a "gift" for Astro, Uran is an extremely mischievous little girl who constantly lands her older brother in trouble. While lacking Astro's weaponry and propulsion systems, she is extremely powerful (50,000 horsepower) and regularly accompanies him on various missions (or attempts to). Like Astro, she is fully capable of experiencing human emotions - though being somewhat less 'mature'. Uran first appeared in Episode 25 (The Strange Birthday Present) under the name Astrogirl; in the manga she has always been known as Uran (although in the 2000 anime series she was renamed Zoran). In the 2003 anime & Naoki Urasawa's Pluto Uran has the ability to communicate with animals. In the Canadian version of Astroboy, she is dubbed as "Sara".

Dr. Umatarō Tenma (TENMA-hakase; "Dr. Aster Boyton II") - The former head of the Institute of Science. Ever since his son died, he decided to build a robot boy who looks like his son. But when he discovered that Astro Boy could not grow, he sold his son to the circus. He appears only in Episodes 1: Birth of Astro Boy, and 97: Mystery of The Metal Men.

Hoshie Tenma (TENMA Hoshie) - deceased wife of Dr. Umatarō Tenma and mother of Tobio Tenma. Her facial features are taken from Michi, a superhuman being created from synthetic cells in the manga version of Metropolis. This is quite appropriate as Michi was something of a spiritual predecessor to Astro and in a way could even be seen as his mother. Hoshie was the model for Atom's robotic mother as seen in volumes seven and Eight of the Astroboy Manga. See Tezuka in English's Hoshie Tenma page for more details.

Professor Ochanomizu (OCHANOMIZU-hakase; "Dr. Packerdermus J. Elefun") - The present head of the Institute of Science and a fearless campaigner for robotic rights. Kind, patient and good-natured, he serves as a mentor for both Astro and Uran, and would willingly give his life for either. Somewhat eccentric by nature, he tends to be excitable when faced by a scientific mystery, particularly when his opinions are questioned by his scientific colleagues. He first appeared in Episode 1: Birth of Astro Boy, where he rescued Astro from Caccitore's circus.

Police Inspector Tawashi (Tawashi-keibu; translated as "Inspector Hairbrush"; known in English as "Inspector Gumshoe") - a highly-placed police detective with an innate distrust of androids and robots (the reason to this is never explained in detail). Due to his opposition to Tokyo's robotic population, Gumshoe has a long-standing feud with both Dr. Elephun and Mr. Pompous, and frequently engages in volatile arguments with them. While arrogant, cantankerous and, in some cases, downright rude, he eventually comes to respect Astro's courage and abilities, even calling for his assistance in particularly difficult cases. Partnered with Chief McClaw, he first appeared in Episode 2: Colosso.

Police Inspector Nakamura (Nakamura-keibu; "Chief McClaw") - The chief of the police and the partner of Inspector Gumshoe. Played mainly for comic relief, he was normally portrayed as fat, dim-witted and gullible; a stereotype "clueless flatfoot" of the period. Nonetheless, he instantly recognized Astro's good side and frequently stood up for Astro Boy against his bullying partner (as seen in Episode 23). In the 1960s English translations, he has an Irish accent. He first appeared in Episode 2: Colosso.

Shunsaku Ban (BAN Shunsaku; "Albert Duncan") aka Victor (later Percival) Pompous in the first series, Mr. Mustachio (Higeoyaji; "Daddy Walrus") in the second - originally introduced as a private investigator in the first American dub, Higeoyaji played several roles in the Japanese strip series, including school teacher and martial arts expert. Like Dr. Elephun, Higeoyaji serves as a surrogate father for Astro and Uran, providing guidance and advice when necessary. While gruff and comically short-tempered, he harbours a deep admiration for Astro, seeing him as the son he never had, and even stands up to the formidable Inspector Gumshoe in the boy's defence. Higeoyaji first appeared in Episode 7: Zero, the Invisible Robot. In both the original comic strip and the second 1980s Japanese series, he was Astro's school teacher (in Naoki Urasawa's Pluto he has apparently been promoted to principal), and his nickname was Mr. Mustachio or Daddy Walrus. In the 2003 remake, he is notably absent from Astro's school, working full-time as a private eye and is also the uncle of Ochanomizu's assistant, Yuko Kisaragi.

Mama and Papa - Astro Boy's robotic parents. Mama is depicted as an idealized 1960s housewife, and she is sweet, kind and nurturing. She is entirely trusting of her son's impeccable nature, knows he would never deliberately lie or harm another being (as seen in Episode 20). In contrast, Papa is portrayed as something of a well-meaning blowhard, often jumping to conclusions and losing his temper over minor incidents. They first appeared in Episode 2: Colosso. In the Sankei Newspaper Astroboy manga series, it is revealed that Mama was modified to resemble Dr. Tenma's wife who had died of a heart condition shortly after Astro was sold to the circus.

Cobalt (Kobaruto; "Jetto") - Astro Boy's cybernetic brother. His origins differ in the continuities of the manga & anime versions. In the manga, he is an inferior copy of Astro created as a replacement by Prof. Ochanomizu when he was missing & presumed scrap. In the anime version, he was a defective prototype of Astro built by Dr. Tenma, then sealed within the Ministry of Science archives & later released. Jetto has abilities comparable to his brother's, but lacks Astro's intelligence and common sense. Clumsy, accident-prone and gullible, he is a constant source of trouble for Astro's family (and everyone else who crosses his path). Despite these problems, Jetto is often shown to be extremely kind-hearted and loyal. In addition to the abilities that were copied from Astro, he also shares a kind of telepathic link with his brother that gives him the ability to sense when Astro is in danger & home in his location. He originally died a heroic death at the conclusion of the Midoro Swamp story arc in the Shonen Magazine serial version of the manga, but Tezuka later changed his mind & rewrote the ending for the paperback version so that he survived. He first appeared in Episode 84: Brother Jetto. In the manga, his name is Cobalt. After the original anime and manga series ended, Cobalt fell into obscurity, largely due to the fact that Atlas was recast as Astro's "brother" in the 1980s anime, making Cobalt's role somewhat redundant.

Chi-Tan - Astro Boy's baby brother created by Dr. Ochanomizu and seen primarily in the last season of the anime. Created primarily as a comic relief character. Main characteristic is his loud bawling, which can shatter things. Believed to have been inspired by the character, Swee'Pea from the Popeye cartoons.

Ken'ichi - Astro's classmate. He's the class president and also the smartest. He first appeared in the manga Episode, The Hot Dog Corps.

The Blue Knight - also known as Blue Bon. He is known to be a hero among many robots for helping those who were treated poorly by humans. As he wears a blue suit armor, people call him "The Blue Knight" out of fear. He also wields a sword that emits an aura that affects certain robots. During a fight against him, Astro realizes that the sword does not affect robots that tend to revolt against human however those that do not will feel tired as he did. He only appeared in one manga episode, "The Blue Knight". In the 2003 anime series his character was expanded and was given a background story line. During his early days as normal robot, he used to work at a robot circus, repairing broken robots who lost in robot fighting matches. When he saw how badly robots were treated in the circus, he decided to take action by helping them all escape; however, he was caught by his human owner, who happens to be the ringmaster of the robot circus and was thrown out into space. He was later found by Shadow who rebuilt him into The Blue Knight. He is portrayed as a crusader for robots and tends to be cold and cruel towards humans, especially those who mistreated robots. He does not listen to anything they say and does not care if he hurts anyone of them whether they are innocent or not because of all the anger that he had in the past.

AL Mechanic - A mechanic who dislikes beautiful things. He was last seen crying after Astro Boy forgives him. This character appeared only in Episode 37, "Astroboy Goes To School". However, this actor appeared in other episodes in other roles, but always as a villain.

Ali Baba - A leader of an Arabian bandit gang. Astro Boy saw Ali Baba when he had less energy. Ali Baba gave Astro Boy his horse's energy and Astro Boy was able to walk. When Ali Baba and Clyde Snydley were about to steal all of Dr. Snow's inventions, Astro Boy stopped them and brought the two delinquents to justice. Ali Baba and his gang appeared only in Episode 4: The Sphinx. In the manga, they were a band of thieves in Mexico. See Jeffbert's review of Frozen Man for more details.

Ape O. Gorilla is the English language version's name for Tezuka's actor named Rommel. In this role, he portrays a head gangster who plans to get rid of Zooti. He's last seen giving up after he fails to get rid of Zooti. See Jeffbert's review of episode 29: Memory Day for more details.

Beatle and Foxy - Two hunters who are willing to hunt down a lot of elephants. After Maxi is defeated, these two are apprehended by the elephants and were never seen again. These two appeared only in Episode 51: Jimbo the Great (Jeffbert's review).

Black Lux / Sharkey Dirk - A man who really hates robots. He has his own gang to hunt down all the robots, until Astro Boy brought back his mom. Sharkey reunited with his mom and vowed never to destroy any more robots. He appears only in Episode 13: Deep Freeze. In the manga, his name was Black Lux. Jeffbert's review of Black Lux for details.

Tobias Toggle - A man who threatens the beltway after his idea of flying cars was rejected. He appeared only in Episode 76: The mad beltway.

Captain Blowper - A whaler who is interfering with Astro Boy's secret mission. He is last seen blown out of the TV set when he was defeated by Astro Boy. Blowper appeared only in Episode 41: Deadline toeview of episode 41 for details.

Captain Daring - An astronaut who dislikes following Astro Boy's orders because he is a robot. He was last seen killed by the martians. He appeared only in Episode 3: Expedition to Mars. In the manga, his name is Captain Ketchup. See Jeffbert's review of Expedition to Mars for details.

Captain Olga - Commander of a navy who stole a part for a spaceship. Her assistant is Professor Schlepkin. She appeared only in Episode 46: The Phantom Spaceship. In the manga, her name is Colonel Vega and her assistant is Professor Popo. In the manga, Vega kills her assistant after a failure, while at the end of the manga story, she was killed in an explosion of her man made island. See Jeffbert's review of Robot Spaceship for details.

Clyde Snydley - An archeologist. He has a gang of Arabian bandits and plans to steal Doctor I. C. Snow's secret plans, until Astro Boy brought him and his gang to justice. He appears only in Episode 4: The Sphinx. In the manga, he appears as Monsiuer Ampere, the man who wanted Dr. Snow's inventions.

Commander Sabloski - Commander of the subterranean tank. He appeared only in the Manga episode, Subterranean Tank.

Corny J. Sneer - Co-leader of a gang who not only kidnapped Moe mole, but Astro Boy, Dr. Elefun and Icky Icabod. He and his gang were last seen tied up by Icky Icabod off-screen. Sneer appeared only in Episode 42: Island of Mystery. See Jeffbert's Review of Island of Mystery for details.

Dictator Ahmud - An evil dictator of Halava. He was last seen chased out of Halava by Astro Boy. He appeared only in Episode 101: Dangerous Mission.

Dr. Fooler / Professor I.Q. Plenty - A scientist who invented the wacky machine, causing all machines to go out of control. Episode 28: The Wacky Machine. Although the name I.Q. Plenty was used instead of Fooler only in the English language version of this episode, this character appears in several episodes and manga stories. See Jeffbert's review of Mad Machine for details on this episode.

Dr. Gabritol - A scientist who invented the deadly punch card. His arch-rival is Dr. Newton. He was last seen crying when he felt guilty that his punch card made the rocket factory gone mad. He appeared only in Episode 86: The magic punch card.

Dr. Goldthumb - A scientist who told Future to steal the gold from a rocket. He appeared only in Episode 86: The great rocket robbery.

Dr. Gray Dorian (sometimes mistaken for Judas Pater but although their stories are similar, these are very different characters) – Dr. Gray Dorian's story is first told in one of Osamu Tezuka's other (than Astroboy) manga, in a series called Lion Books, but it was adapted to Astroboy's world in the 1963 anime. Judas Pater's story was told only in the Astroboy Manga. See Jeffbert's review of Mysterious Cosmic Rays for details on Pater and Gray.

Dr. Heel - A greedy scientist who builds an undersea city and kidnaps the dolphin king's son, Finny. He only appeared in Episode 75: Dolphins in Distress.

Dr. Junkovich - A Russian scientist who works with Maria. He was last seen killed with Maria while a machine exploded. This episode was excluded from the English language version, but in the Japanese version, it was #32. The character's appearance is the same in the anime as it is in the manga. He also makes a cameo appearance in Metropolis.

Dr. Ram / Don Tay - A scientist who hates civilization. He invented Fernal the fire robot to get revenge on a village in Mexico. When he realized that destroying civilization was wrong, Don Tay no longer became a bad guy and Astro Boy destroyed Fernal. He appeared only in Episode 26: Don Tay's Infernal Machine. In the manga, his name is Dr. Ram. See Jeffbert's review of Atlas for details.

Dr. Rasburton - A scientist who lives at Egypt. He invented Cleopatra to fool them that she's brought back to life. He was last seen killed along with Cleopatra in a cave-in. Dr. Rasburton appeared only in Episodes 44: Cleopatra Heart, and 45: Return of Cleopatra. In the manga, his name is Dr. Baribari. See Jeffbert's review of Secret of the Egyptian Conspirators for details.

Dr. Sowbelly - A scientist who held Astro Boy and Dr. Elefun as prisoners. He was last seen bidding farewell to Astro Boy after he saved his home from evil aliens. He appeared only in Episode 103: Prisoners in Space.

Dr. Tempo - A scientist who is extremely jealous of Dr. Elefun and invented a time gun. He appeared only in Episode 77: The Terrible Time Gun.

Dr. Time - A scientist from the 23rd century. He wanted to go back to time to get a cave boy and a young dinosaur, causing a brontosaurus to accidentally go to the future and get revenge. When Dr. Time brought back the dinosaur and the cave boy, and Astro Boy brought back the brontosaurus to its own time, Dr. Time's no longer a villain. He appears only in Episode 18: The Time Machine. In the manga, he and his son did not appeared in the Time Machine. See Jeffbert's review of for details.

Dr. Zulu/Doc Cheddar - A scientist who plans to steal the artificial fireball from Dr. Hart and Marry KING feebo's daughter Rosanna. He was last seen apprehended by his own henchmen. He appeared only in Episode 54: The Man-Made Iceberg.

Dr. Temp - A scientist who encounters Astro Boy. He appeared only in Episode 60: The Clock Tower Mystery.

Eeny Miney - One of the fences who sell stolen goods taken by space pirates from ships. His big mouth partner is Meeny Miney. He was last seen crying while Astro Boy heads for the hotel to find Gorilla Gruesome. This character appeared only in Episode 21: Satellite R-45. See Jeffbert's review ofSatellite R-45

Führer ZZZ / Agent 3-Z - A criminal who happens to be a president's brother. He wanted to assassinate all supreme scientists and presidents who would dare get in his way. He did not mean to hurt his brother, but someday, when the president makes a full recovery, he will forgive Agent 3-Z. Agent 3-Z appears only in episode 16: Agent 3-Z. In the manga, his name was Führer ZZZ. See Jeffbert's review of Führer ZZZ for details.

Professor Boo Boo - A man who was after the head of the bright robot. He appeared only in Episode 30: The Super Duper Robot. In the manga, he is named Gaston Jeffbert's review of Robot Bron-X for details.

Geliton the Genie - A genie that exists only in the Fairy tale told as a preface to the actual Astroboy story. Just when he was about to eat a fisherman, the fisherman was too wise for Geliton. In order to prove that Geliton's a genie, the fisherman tells him to drink up the entire ocean. Geliton was last seen too exhausted and too full to eat the fisherman. Luckily, the fisherman got his fish and lived to tell about. Just as the fisherman defeated the Genie, Astroboy would defeat the giant robot Galon (see below). Geliton appears only in Episode 19: The Cosmic Giant. See Jeffbert's review of The Cosmic Giant for details and character portraits.

Gorilla Gruesome - One of the space pirates who attacked other ships and steal stuff from them. The space pirate's leader is Mr. Trickem, the ringmaster. Gorilla Gruesome was last seen taken cared by Astro Boy and Captain Cronie Puss. He appeared only in Episode 21: Satellite R-45.

Haido / Dr. Magico - A scientist who operates and owns Hullabaloo Land. He treats his robots (except Baron Von Hoodwink) like trash, until Astro Boy defeats Both Hoodwink and Firesnout, and Dr. Magico's robots turned against him. He appears only in Episode 9: Hullabaloo Land. In the manga, his name is Haido.

Horace Hooligan - A leader of an anti-robot organization who encountered Astro Boy. He hunts down robots about of his mother's death. He was last seen as a teenager and was happily reunited with his robot mom; giving up his evil ways. He appeared only in Episode 68: The Hooligan Whodunit. He is also named Black Looks in the Manga: Black Looks

I. M. Greedy - An insurance person who visited Klaus to tell him to make more deadlier toys. He appeared only in Episode 58: The devil Doll.

Jacque - A teenager who does not appear to be a bad guy and escaped from jail. He appeared only in the Manga episode, "The 100 Million Year Old Crime".

Kanbei Yamano - A leader of a crime organization. His daughter is one of the henchmen. 3 are unmasked while the other man's mask is unrevealed and another is a robot. They were last seen arrested by Mustachio. They appeared only in the manga episode, Six men and a robot.

King El Dupey - King of AntHillia. He rules Anthillia with an iron fist. After El Dupey and men returned to their normal selfs, they found that were actually brainwashed by the robot bees. He was last seen saying goodbye to Astro Boy after he promised to be a better and nicer king of a new kingdom because Anthillia was destroyed for good. He appeared only in Episode 53: Dogma Palace.

King Horrid - A villain who rules with an iron fist and happens to be a robot. He appeared only in Episode 80: Horrible King Horrid.

Kinsakaku / Elial Belial - A film producer who stole the Artificial Sun. The islanders, along with Jeckyll and Hyde, are his henchmen. His plan was going on success, until Astro Boy destroyed the Artificial Sun. He appears only in Episode 12: The Artificial Sun. He appears again as Plushie Posher in Episode 22: Sea Serpent Island. In the manga, his name is Kinsakaku, who also appears in the manga episode of Cross Island.

Lenni - Leader of the five teenaged delinquents who escaped from jail with Louis, Remi, Pierre and Jacque. He appeared only in the Manga episode, The 100 Million Year Old Crime.

Long John Floater - A crazy king of Vikings who responsible for the rampage. His ship is the S.S. Lolly. He was last seen arrested by the space police. He appeared only in Episode 57: The Viking King (Aka) Vikings.

Louis - A freckle-faced teenager who escaped from jail. He appeared only in the manga episode, the 100 million year old crime.

Maria - A Russian dictator who leads a gang of cyborgs who acts like dogs. She was last seen killed by a giant cyclops while declaring the moon. Her mother was Margo Poco. She appeared only in the manga episode, The Hot Dog Corps.

Meeny Miney - One of the space pirates who does not appeared to be a bad guy. To his partner Eeny, he's a big mouth tattle tale. He was last seen locked in a box so "no one would hear a word." But Astro Boy heard what Meeny said and went to the hotel. He appears only in Episode 21: R-45.

Mephitso / Patch - A scientist with an eyepatch who invented the 47-robot centipede Gangor. He appears in Episode 15: Gangor. In the manga, his name is Mephitso. He appears again in Episode 95: General Astro.

Monk - A gangster who is in charge of Colosso. He was last seen crying while Colosso with a robot brain heads to space. He appeared only in Episode 2: Colosso.

Mr. DingDong - A manager of a robot fighter, K.O. Klunker. He used Klunker to destroy both Astro Boy and Astro Girl. Mr. DingDong was last seen defeated by Both Astro Boy and Uran after they destroyed his robots. He appeared only in Episode 25: The strange Birthday Present.

Mr. Vile - A man who killed Angelica's parents. He appeared only in Episode 85: Angel of the Alps.

Mr. X - A criminal who invented the poisonous houseflies and All five of the Bo robots. He's the leader of the X gang. Mr. X and his gang were defeated by Astro Boy to stop the deadly flies. Mr. X appears only in Episode 23: The Deadly Flies.

Nikoteen - A leader of a gang who kidnapped Astro Boy, Dr. Elefun, and Professor Icky Icabod. In order to find a ship, He used Icabod to find 3 statues crying, 7 statues roaring, and 9 statues laughing. Nikoteen was last seen learning his lesson after the spaceship exploded. Nikoteen appeared only in Episode 42: Island of Mystery.

Noh Uno / J. C. Tenpercent - A magician and inventor of both Hocupocus and Abracadabra. He and Hocuspocus are responsible for the stolen art paintings and Abracadabra was framed!! Tenpercent was last seen arrested by the police while Hocuspocus and Abracadabra performed yet the greatest show on Earth. He appeared only in Episode 33: The Three Magicians. In the manga, his name is Mr. Noh Uno.

Novacain - A scientist who leads a gang of banned citizens and worshipped the god Baal. Novacain and his gang kidnapped Professor Natsu in order to make the Elixir of Life. Novacain was last seen getting the hiccups when he drank Casterol Oil. He appears only in Episode 36: Elixir of Life.

Pablos / Professor Holstein - Ochanomizu's friend, who flunked out of Pencil University with Ochanomizu. Pablos asks Ochanomizu to come to Golgonia, but secretly requests that Ochanomizu does not come via a hidden invisible ink message. He appeared only in Episode 10: Spirit Machine.

Pierre - A short pompous teenager who escaped from jail. He appeared only in the Manga episode, the 100 Million Year Old Crime.

Premier Hitlini / Chancellor Rudolph Hatter - The dictator of Golgonia (Shangri-Le in the English anime). In the English anime, his enemies called him "Mad Hatter" because of his anger. When he was about to be split in two by Pablos's Ghost Machine, The Professor destroyed the machine, killing Hitlini. Hitlini only appears in Episode 10: Spirit Machine. In the manga, his name was Hitlini. This character was based on Adolf Hitler.

Prince Upley - A villain who happens to be the inventor of Ditto. He kidnapped Mr. Pompous and Ditto while Astro Boy was searching for them. Astro Boy stopped Prince Upley by disguising as Ditto and unmasking the villain who looks just like Ditto. Prince Upley appeared only in Episode 43: Ditto. In the manga, his name is Deadcross.

Professors Pim, Pom, and Pum - A trio of professors who are after Beamo. They appeared only in Episode 62: Attack from Space.

Ray Sergum - A scientist who is behind the vampire mystery. He appeared only in Episode 55: Vampire Vale. In the manga, his name is Dr. Pedan.

Remi - A browned eyed teenager who escaped from jail. He appeared only in the manga episode, The 100 million year old crime.

Reno - A young teenager who aired on Astro Boy 2003 episode 22 "Robot Circus" Reno was raised by robots whom were headed for the scrap heap when they heard crying noises, and found Reno, abandoned, and with no hope of survival on his own, the gang adopted him, raised him and re-opened their circus to raise money for food and shelter. Eventually, Reno was discovered and was taken away from them. but all was not bad, in the end Dr. Oshay became his legal guardian, and took custody of him. Astro (Atom) and Reno were therefore brothers, and the best of friends. With Astro by his side, Reno's life never had a dull moment. ♥ (added by: AtomXKoisuru)♥

Rex - A snow lion. This lion happens to be snow. He has the ability to drain energy. He was last seen killed by Astro Boy. He appeared only in Episode 52: Snow Lion. In the manga, he appears as a leopard named Lupe.

Sam Caeser - A scientist who rules a new Roman empire. When Dr. Elefun was about to escape, Brutus, invented by Sam Caeser, caught one of the robots carrying bags full of treasure. Sam Caeser sent Dr. Ochanomizu to be fed by a fire-breathing robot lion. Astro Boy rescued Dr. Ochanomizu and defeated Sam's entire army. He was last seen dead while Dr. Elefun and Astro Boy escaped from the cave-in. Sam Caeser appears only in Episode 40: The Abominable Snowman.

Secret Agent ZM4 - A spy whose secret identity is Stickim. He was last seen turned into a bug by Galon. He appeared only in Episode 19: The cosmic Giant.

Sharkey - An assassin hired by Wily to get rid of Astro Boy. He was last seen beaten up by Mr. Pompous. Sharkey appeared only in Episode 49: 3d Tee Vee. In the manga, his name is Killer 0000.

Shorty- A gullible gangster who appeared only in the manga episode, Subterranean Tank.

Skunk Kusai / Fearless Fred Fenk - A criminal who used to be in jail. He used Zero the invisible Robot for dastardly crimes and to release his old friends. Just when he was about to escape, while Astro Boy defeats his gang, Mr. Pompous stops him in his tracks and send him to justice by throwing him against the wall, beating him up in a mailbag, spraying him with a garden hose, tickling him and jumping up and down a plank (with Fenk on the right side) and sends him flying to the police. He was last seen struggling while he was wearing the sypo-scope. He appears only in Episode 7: Zero the Invisible Robot. In the manga, his name is Skunk Kusai and he also appeared in Attack of The Astro Balloons. In Japan, he appears in various episodes of Astro Boy. He has also been seen in the other animated series that have appeared, but, as time passed, his gang seemed to get smaller (most likely because he was using robots more), and, eventually, his last appearance was in the 2003 Astro Boy series. See Jeffbert's Skunk Page for more details.

Space Crab - A space crab from the Planet Gip Gip. Trickem traded a pig for a space crab. The Space Crab was last seen destroyed by Tiny the Dinosaur. It appeared only in Episode 47: The Gigantic Space Crab.

Sultan - A sultan who built Pluto. He was last seen crying after Pluto was killed by Bora. He appeared only in the manga episode, The World's Greatest Robot. In the manga his name is Chochi-Chochi Abbaba III, while in Naoki Urasawa's Pluto he is recast as Persian dictator Darius XIV.

Tex Tamale - A cowboy who races against Tommy Speed. He was last seen wearing an Indian's hat after Tommy Speed won the race. He appeared only in Episode 8: The Silver Comet.

The dinosaurs - If you think that the dinosaurs from Episode 34 are bad, wait until you hear from these guys in Episode 59: Dinosaur Dilemma.

The Snow Wizard - A wizard from a distant planet who wants to take over the world with snow. He was last seen melted after defeated by Mr. Pompous. He appeared only in Episode 52: Snow Lion.

The Talking Dinosaurs - Truth says that dinosaurs are extinct, but not these guys. They spit venom on their victims and make them their slaves. All of these lizards were last seen killed after Astro Boy destroyed their only robot. They appeared only in Episode 34: The Beast from 20 fathoms (The lost episode).

Toxor - A mist man. He got inside one of the astronaut's body, controlling him. The other mist men went to the other 8 bodies. Causing every person to go super insane. Toxor and the mist men were last seen frozen by Astro Boy and Dr. Elefun's freeze Machine. Toxor and the mist men appear only in Episode 20: Toxor, the mist man. In the manga their origin is slightly different, being invisible creatures from Earth's upper atmosphere, rather than extraterrestrials.

Caccitore - A circus ringmaster. He treated Astro Boy and the rest of the robots like trash. After he heard that all robots are free, he became angry and lost Astro Boy to Dr. Elefun, which caused him to cry in defeat. He first appears in Episode 1: Birth of Astro Boy. In the manga, his name was Hamegg. His name sometimes changes to Trickem. Since then, he has appeared in every animated series of Astro Boy, even in the 2009 Astro Boy movie.

Ugupug - A gorilla-faced gangster who kidnapped Yatata and Gavalon. He appeared only in Episode 48: The great space horse.

Villainous - A hunter who tried to kidnap and sell Luna Luna to a circus. He appeared only in Episode 78: The space princess.

Weezel - A thug who leads a group of uranium smugglers in a submarine disguised as a ship. He and his gang are last seen defeated by Astro Boy and were apprehended to the police. Weezel appeared only in Episode 17: The Haunted Ship.

Wily - A criminal hired by Dr. Snorkel to destroy the teleporting transmitter. Dr. Snorkel was ashamed of himself and decided to let Astro Boy and Mr. Pompous stop Wily and his gang. Wily and his men were last seen exhausted after Rokar taught them a lesson. Wily appeared only in Episode 49: 3d Tee Vee. In the manga, he is named Nada. He is not to be confused with Dr. Wily from Mega Man.