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The Best Episodes of Astro Boy

Every episode of Astro Boy ranked from best to worst. Let's dive into the Best Episodes of Astro Boy!

Binge this in 3d 14h•Peaking at 7.5/10

In the year 2000, Dr. Boyton creates a super-robot in his deceased son's image. He calls the robot Astro Boy. Astro Boy can swim oceans, leap over mountains, even fly into space on his own

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Episode Rankings

  1. #1 Fan Favorite
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    Astro Boy Season 1 Episode 4 - One Million Mammoth Snails
    7.5/10(12 votes)

    #1 - One Million Mammoth Snails

    S1:E4

    Professor Nutty Fruitcake grows giant fruits and vegetables. One day he breeds giant snails thinking they would be harmless, one million snails to be exact. The snails fill the mountain side and overflow into cities.

    Directors:Osamu Tezuka, Yuusaku Sakamoto
    Writer:Unknown

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  2. Astro Boy Season 1 Episode 34 - Beast From 20,000 Fathoms
    7.3/10(15 votes)

    #2 - Beast From 20,000 Fathoms

    S1:E34

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

    Director:Unknown
    Writer:Unknown

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  3. Astro Boy Season 1 Episode 2 - Colosso
    6.8/10(23 votes)

    #3 - Colosso

    S1:E2

    It is the year 2000 and robots have been put in charge of making other robots when there are no longer enough people to do the work. Astro Boy dreams of having a real mother, just like human boys. The robot workers are making an experimental new robot named Colosso who goes berserk and escapes shortly after coming to life. The only hope is for Astro Boy to stop him before he cause too much trouble. (In the original Japanese version, Colosso was named "Frankenstein")

    Director:Osamu Tezuka
    Writer:Unknown

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  4. Astro Boy Season 1 Episode 5 - The Sphinx
    6.8/10(9 votes)

    #4 - The Sphinx

    S1:E5

    Astroboy wakes up in the middle of the desert, nearly drained of power and unable to remember how he got there. He is helped by Ali Baba, but in return Astro must battle 'The Sphinx'. This is not a real sphinx, but a robot which guards a desert tomb.

    Director:Osamu Tezuka
    Writer:Unknown

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  5. Astro Boy Season 1 Episode 6 - Zero, the Invisible Robot
    6.8/10(9 votes)

    #5 - Zero, the Invisible Robot

    S1:E6

    Zero Robot, a blend of Etheric Resin with Clear Plastic, can only be seen with polarized light. Fearless Fred Fenk uses Zero for robbery. Astro Boy once again battles another robot. Defeating Zero at a cost, Astro reassess his role in fighting villians.

    Director:Gisaburō Sugii
    Writer:Unknown

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  6. Astro Boy Season 1 Episode 1 - The Birth of Astro Boy
    6.6/10(56 votes)

    #6 - The Birth of Astro Boy

    S1:E1

    Dr. Tenma, Director General of the Science Ministry, loses his son Tobio in an accident. He decides to create the robot Astro Boy, who looks just like Tobio, using the best of the Science Ministry's technology.

    Director:Osamu Tezuka
    Writer:Unknown

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    The 20 WORST Episodes of Astro Boy

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  7. Astro Boy Season 1 Episode 3 - Expedition to Mars
    6.6/10(14 votes)

    #7 - Expedition to Mars

    S1:E3

    Astroboy is selected to lead a search party to find the survivors of the first manned expedition to Mars. This meets strong objection from the spaceship's captain, who protests taking orders from a robot.

    Director:Osamu Tezuka
    Writer:Unknown

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  8. Astro Boy Season 1 Episode 27 - Pearl People
    6.5/10(15 votes)

    #8 - Pearl People

    S1:E27

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

    Director:Unknown
    Writer:Unknown

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  9. Astro Boy Season 1 Episode 7 - Captain Atom
    6.2/10(8 votes)

    #9 - Captain Atom

    S1:E7

    Alien resembling aliens including the doctor of Ochanomizu and Higeyajiji emigrated from the stars that looked like the earth in emergency. However, the food crisis and humankind will begin attacking the aliens with cell shrink solution.

    Director:Eiichi Yamamoto
    Writer:Unknown

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  10. Astro Boy Season 1 Episode 29 - Memory Day
    4.9/10(13 votes)

    #10 - Memory Day

    S1:E29

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

    Director:Unknown
    Writer:Unknown

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  11. Astro Boy Season 1 Episode 28 - The Wacky Machine
    4.7/10(13 votes)

    #11 - The Wacky Machine

    S1:E28

    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.

    Director:Unknown
    Writer:Unknown

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  12. Astro Boy Season 1 Episode 23 - The Deadly Flies
    4.3/10(13 votes)

    #12 - The Deadly Flies

    S1:E23

    A mysterious epidemic causes people to drop into comas.

    Director:Unknown
    Writer:Unknown

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  13. Astro Boy Season 1 Episode 32 - Hot Dog Corps
    2.2/10(17 votes)

    #13 - Hot Dog Corps

    S1:E32

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

    Director:Unknown
    Writer:Unknown

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  14. Astro Boy Season 1 Episode 8 - The Spirit Machine
    0.0/10(0 votes)

    #14 - The Spirit Machine

    S1:E8

    In a land called Shangri-Lee a dictator rose to power. Known to his enemies as the Mad Hatter he trusted no one. To solve this need to do everything himself he captured Dr Elefun. Dr Elefun was to make duplicates of the Mad Hatter. Astro Boy rescues Dr Elefun and the Spirit Machine is destroyed.

    Director:Motoaki Ishii
    Writer:Unknown

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  15. Astro Boy Season 1 Episode 9 - The Deep Freeze
    0.0/10(0 votes)

    #15 - The Deep Freeze

    S1:E9

    Crime knows no boundaries - not even the North Pole! Sharkey Dirk and his gang of cut-throats had become the Scourge of the Arctic! An avowed robot-hater, Sharkey foraged far and wide destroying every machine in his path. His hideout was a secret den situated right at the Pole (who would think to look for him there?)

    Director:Shuji Konno
    Writer:Unknown

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  16. Astro Boy Season 1 Episode 10 - Strange Voyage
    0.0/10(0 votes)

    #16 - Strange Voyage

    S1:E10

    'Lucky' Louie the Lug has slipped by the police at a space port and boarded the first commercial flight to the Moon. Astroboy pursues him seeking to recover stolen diamonds, but the liftoff is underway before he can apprehend the criminal. When meteors collide with the ship, Astro escapes in a damaged space raft with Louie, a little girl named Marvel, Radio Announcer 'Stark' Raving, socialite Mona Toujour and crooked insurance magnate 'Rocco' Gibraltor. They land on a strange asteroid which is a frozen vacuum by night, but has breathable air by day.

    Director:Yuusaku Sakamoto
    Writer:Unknown

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  17. Astro Boy Season 1 Episode 11 - Time Machine
    0.0/10(0 votes)

    #17 - Time Machine

    S1:E11

    One day, excitable Mr. Pompous was relaxing at home when suddenly a mysterious ship crashed through his front door. Clearly the ship was something from the future.

    Director:Osamu Tezuka
    Writer:Unknown

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  18. Astro Boy Season 1 Episode 12 - Cross Island
    0.0/10(0 votes)

    #18 - Cross Island

    S1:E12

    After Dr I.M. Sinister and his 2 henchmen 'Red' and 'Mouse' escape from Sing Song Prison, they hide at the mining colony of Cross Island disguised as robots. The gang overpowers Dr Elefun, who is repairing the robot miners. As chance has it, one boy robot on the island was built by Dr Sinister. While holding Elefun at gunpoint, Sinister demands not only HIS robot but the use of parts from Astroboy, so he can build a super-robot capable of changing into an array of animals.

    Director:Gisaburō Sugii
    Writer:Unknown

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  19. Astro Boy Season 1 Episode 13 - The Eyes of Christ
    0.0/10(0 votes)

    #19 - The Eyes of Christ

    S1:E13

    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.

    Director:Eiichi Yamamoto
    Writer:Unknown

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  20. Astro Boy Season 1 Episode 14 - The Artificial Sun
    0.0/10(0 votes)

    #20 - The Artificial Sun

    S1:E14

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

    Director:Motoaki Ishii
    Writer:Unknown

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  21. Astro Boy Season 1 Episode 15 - Grass Boy
    0.0/10(0 votes)

    #21 - Grass Boy

    S1:E15

    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.

    Director:Shuji Konno
    Writer:Unknown

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  22. Astro Boy Season 1 Episode 16 - Silver Comet
    0.0/10(0 votes)

    #22 - Silver Comet

    S1:E16

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

    Director:Unknown
    Writer:Unknown

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  23. Astro Boy Season 1 Episode 17 - Hullabaloo Land
    0.0/10(0 votes)

    #23 - Hullabaloo Land

    S1:E17

    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.

    Director:Unknown
    Writer:Unknown

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  24. Astro Boy Season 1 Episode 18 - Gangor the Monster
    0.0/10(0 votes)

    #24 - Gangor the Monster

    S1:E18

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

    Director:Unknown
    Writer:Unknown

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  25. Astro Boy Season 1 Episode 19 - The Cosmic Giant
    0.0/10(0 votes)

    #25 - The Cosmic Giant

    S1:E19

    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.

    Director:Unknown
    Writer:Unknown

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Best Episodes Summary

"One Million Mammoth Snails" is the best rated episode of "Astro Boy". It scored 7.5/10 based on 12 votes. Directed by Osamu Tezuka, Yuusaku Sakamoto and written by Unknown, it aired on 1/22/1963. This episode scored 0.2 points higher than the second highest rated, "Beast From 20,000 Fathoms".