1x1 - Birth of Astro Boy

January 1, 1963

The story takes place in Metro City, circa 2000 A.D. After the death of his son, Dr. Tenma (Dr. Boynton) copes with his grief by creating a robot child that looks like his son: Astro Boy. After some time it becomes clear that Astro is not like Tobi, so his father sells him to Hamegg (Cacciatore), the cruel ringmaster of a robotic circus. At the circus, Astro is forced to fight against Z.O.G. and wins after he discovers some of his abilities. Professor Ochanomizu (Dr. Elefun) protests the abuse of robots and unsuccessfully negotiates for Astro's release. Later that night, Astro revives some robotics that Hamegg plans to sell as scrap metal. Later a robot named Sparky explodes, causing the whole circus tent to collapse. Astro leads the robots in a rescue mission. Later at a hospital, Astro is liberated from Hamegg as Professor Ochanomizu leaves with him.

1x2 - Colosso

January 8, 1963

Astro Boy longs to have parents, so Professor Ochanomizu has robot parents custom made. In a robotic factory, an experimental robotic named Frankenstein (Colosso) goes haywire and escapes. Frankenstein becomes the slave of a gang led by Acetylene Lamp (Big Boss), who has Frankenstein steal from a safe, a ballet, and a bank. Astro is blamed by Inspector Tawashi (Inspector Gumshoe) for the crimes, but is saved by Professor Ochanomizu. Professor Ochanomizu devises a plan to bait Frankenstein onto a ship using fake diamonds, where Astro defeats Frankenstein. The mobsters arrive, but Astro defeats them and they are soon arrested. Astro is rewarded for his heroism with his recently completed parents. Frankenstein is repaired.

1x3 - Expedition to Mars

January 15, 1963

When the first expedition to Mars fails because of a mutiny by the crew, Astro Boy is appointed commander of the second expedition.

1x4 - One Million Mammoth Snails

January 22, 1963

Astro Boy and Professor Ochanomizu investigate the disappearances of campers and mountaineers in the ice mountains, and discover a scientist who unleashes a swarm of snails on the world.

1x5 - The Sphinx

January 29, 1963

Astro Boy is tricked by some bandits into helping them search for treasure in the Egyptian desert.

1x6 - Zero, the Invisible Robot

February 5, 1963

An invisible robot named Denkou (Zero) is stolen by the gangster Skunk Kusai (Fearless Fred Fink), who seeks to use him for criminal purposes. Denkou has no concept of good or bad because of his upbringing under the criminal, but is saved by Astro.

1x8 - The Spirit Machine

February 19, 1963

In a faraway land, a dictator rises to power and seeks to rule the world.

1x9 - The Deep Freeze

February 26, 1963

Criminal Black Lux (Sharkey Dirk) becomes notorious in the Arctic.

1x10 - Strange Voyage

March 5, 1963

Astro Boy leaps aboard a spaceship just before blastoff.

1x11 - Time Machine

February 12, 1963

Higeoyaji is relaxing at home when suddenly a mysterious ship from the future crashes through his front door, the work of Dr. Time.

1x12 - Cross Island

March 19, 1963

Cross Island is a mysterious uncharted island where a task force of robots work in great secrecy, extracting valuable stores of uranium.

1x13 - The Eyes of Christ

March 26, 1963

That priest was dying carving a single mark on the eyes of Christ decorated in the church. Apparently it seems to be a clue to teach the identity of the pirate who broke into the church. The same pirate begins to aim for beard hair that knew their secret.

1x14 - The Artificial Sun

April 2, 1963

Film producer Elia Belial plans to ruin Earth using an artificial sun.

1x15 - Grass Boy

April 9, 1963

Astro runs into two of his friends and stumbles upon an interesting flower. While Astro's friends want to pick it, Astro says to leave the flower alone. He then proceeds to tell the tale of this bizarre flower.

1x16 - Silver Comet

April 16, 1963

Young Koichi (Tommy Speed) prepares to enter a world race with his supersonic car, the Silver Comet.

1x17 - Hullabaloo Land

April 23, 1963

Saturn (Baron Von Hoodwink), an evil robot kidnaps Princess Odette (Princess Lollipop), a robot swan who can turn back into her normal self when everyone's asleep. She runs away from Hullabaloo Land as Astro comes to her aid.

1x18 - Gangor the Monster

April 30, 1963

A robot centipede disguised as 47 wrestling robots causes havoc on a ship and in the ocean.

1x19 - The Cosmic Giant

May 7, 1963

Garon, a giant cosmic robot lands on Earth as a meteor, then Astro Boy and the scientists reconstruct him. During a thunderstorm, Garon revives. A corrupt scientist tells Garon to reconstruct an island in the image of his home planet, also changing the atmosphere to match that of the planet, which is toxic to life on Earth.

1x20 - Toxor, the Mist Man

May 14, 1963

Astronauts report seeing fireflies in space, but they are really gaseous beings led by the evil Toxor.

1x21 - Satellite R-45

May 21, 1963

At the large space station Satellite R-45, Astro Boy discovers a pair of souvenir vendors hawking stolen wares.

1x22 - Sea Serpent Isle

May 28, 1963

At a beach Astro Boy spots a mysterious bottle with a note calling for rescue from an uncharted island called Sea Serpent Isle.

1x23 - The Deadly Flies

June 4, 1963

A mysterious epidemic causes people to drop into comas.

1x24 - Kingdom of the Sea

June 11, 1963

A strange robot demands that Astro Boy and Professor Ochanomizu accompany him to an unknown kingdom at the bottom of the sea.

1x25 - The Deep-Underground Tank

June 18, 1963

Together with Dr. Jordan who ran away from under the president who plots world conquest, Atom who got into the underground tank fights the president. But the underground tank loses control and starts pushing towards the volcano.

1x26 - Don Tay's Infernal Machine

June 25, 1963

An evil scientist who hates civilization named Dr. Ram (Don Tay) invents a robot called Atlas to destroy a village.

1x27 - Pearl People

July 2, 1963

Time after time, mysterious forces destroy the huge underwater dam being built by the Institute of Science.

1x28 - The Wacky Machine

July 9, 1963

Dr. Fooler (Dr. I.Q. Plenty) pitches to some plant owners a machine that makes troublesome robots wacky and therefore harmless. The plant owners accept, and the device affects every robot in the city including Astro Boy.

1x29 - Memory Day

July 16, 1963

Once a year, the citizens of Earth celebrate Memory Day and honor the memories of family members who have traveled far into the universe.

1x30 - Secret Agent 3-Z

July 23, 1963

A president fears for his life, as the presidents of several other countries have all been attacked by Führer ZZZ (Secret Agent 3-Z).

1x31 - Mysterious Cosmic Rays

July 30, 1963

A monster appears in the city, and it turns out to be Dr. Dorian, who has been exiled to Mars. He turns into a monster because he cannot get cosmic X-rays on the Earth.

1x32 - Hot Dog Corps

August 6, 1963

Dogs transplanted their brains to the robot are remodeled by Dr. Ponkotsu and challenge humanity as a hot dog corps.

1x33 - The Three Magicians

August 13, 1963

Kino (Abracadabra), a robot magician is approached by a strange magician named Tenpercent, who later frames him for stealing art paintings from a museum. With Astro's help Kino must provide the evidence that he was framed.

1x34 - Beast From 20,000 Fathoms

August 20, 1963

The civilized world is shocked to hear of the sighting of a horrific monster.

1x35 - Planet X

August 27, 1963

Astro Boy sets out on a rocket to rescue people who have been kidnapped for use as livestock on a planet.

1x36 - The Elixir of Life

September 3, 1963

The religious group Pui Pui is looking for a wonder drug that will give them immortality. Dr. Tatsuji, who has succeeded in developing such a drug, is taken away by the religious group. So Astro Boy fights them to ensure the peaceful use of the drug.

1x37 - The Strange Birthday Present

September 10, 1963

On his birthday, Astro Boy receives a little sister, Uran.

1x38 - The Disturbed Small Planet

September 17, 1963

The small planet Mezusa goes out of its orbit and heads straight to the Earth. To save Earth from a collision with the planet, Astro Boy heads for the planet with a convict who is a bomb professional.

1x39 - The Mysterious Cat

September 24, 1963

Dr. Shisoku despairs of human beings that continue the ongoing destruction of nature, and makes animals attack cities in a machine that hypnotizes with ultra short waves.

1x40 - The Abominable Snowman

October 1, 1963

Sam Caesar, a mad scientist hopes to create a new Roman Empire.

1x41 - Deadline to Danger

October 8, 1963

X Bomb, which is capable of turning any substance to water, drops into the Pacific Ocean. There are 50 hours left until the explosion. Astro Boy goes to recollect it, but learns that Uran, who has followed him, has been swallowed along with the bomb by a whale.

1x42 - The Yellow Horse

October 15, 1963

Disguising himself, as a human boy, Astro Boy goes undercover to investigate a drug trade. Some criminals have developed a drug called Yellow Horse, when injected it causes people to dance and make people want more. Professor Ochanomizu has been captured by the drug ring and injected. They try to blackmail him into helping them produce and distribute the drug in exchange for another shot. But Astro is able to pose as a Yellow Horse addict thanks to an artificial skin that makes it look like he is injecting it into himself. He tracks down the headquarters and leads the police to arrest them all. The Professor goes to rehab along with all the addicts for detoxification.

1x43 - Ditto

October 22, 1963

President Ditto (President Rag) is the first robot to lead a nation. His creator Deadcross kidnaps him, and Astro Boy must expose his plot.

1x44 - Cleopatra's Heart

October 29, 1963

Uran is kidnapped and made a hostage in an operation to steal Cleopatra's necklace from Astro Boy. The conspirators believes that whoever possesses the necklace can build the greatest empire in the world.

1x45 - Return of Cleopatra

November 5, 1963

The gang of conspirators obtains the coveted necklace, and at last sets about conquering the world. Astro Boy stands in the way of their boss, Cleopatra.

1x46 - The Phantom Space Ship

November 12, 1963

The robot spaceship Lever Robot is stolen. Astro Boy is sent to retrieve it, but in the process has his energy stolen.

1x47 - The Gigantic Space Crab

November 19, 1963

Astro must destroy a Cosmic Crab (Space Crab) from space.

1x48 - The Great Space Horse

November 26, 1963

Nuu, member of the Tenma Tribe, comes from the depths of the mountains of Mongolia. People rush to the city just to see Nuu, throwing the city into a big chaos. Moreover, a gang plots behind the scenes to capture Nuu.

1x49 - 3D Tee Vee

December 3, 1963

Dr. Hanabusa develops an electrical transmitter for substances. No sooner does he get into the machine for testing that his rival scientist breaks the machine, which makes Dr. Hanabusa an invisible man.

1x50 - Westward, Ha!

December 10, 1963

Astro meets Heck Ben, a scientist's son who time travels back to the American wild west to be a cowboy.

1x51 - Jimbo the Great

December 17, 1963

Astro Boy must help an elephant Pura (Jimbo) to get back to his home.

1x52 - Snow Lion

December 24, 1963

An old man who comes from Planet Regel to the Earth brings a snow lion with him. Then aliens from Planet Regel start to spray cosmic snow that sucks up all energy. Astro Boy takes off for space to save the Earth, when cities have stopped functioning.

1x53 - Goodbye 1963

December 31, 1963

1x54 - Duel on the Alps

January 4, 1964

1x55 - Rejuvenating Gas

January 18, 1964

1x56 - The Moon Monsters

January 25, 1964

Astro joins forces with a group of space troopers to battle aliens who have invaded the Moon.

1x57 - Astro Boy goes to School

February 1, 1964

Humans can see the beauty of things and be impressed by them. In order to learn these feelings from the “heart," Astro, Uran and Lara start attending a robot school.