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Season guide

Astro Boy: Season 1

50 episodes Premiered Apr 6, 2003 Updated Jul 20, 2026
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Episodes

S1·E1

Power Up!

Apr 6, 2003 · 24 min

When Astro is activated the city's power starts to drain, and he must try and stop the robot Magnamite from destroying everything. Armed with Kokoro (the ability of free will) Astr

S1·E2

Rocket Ball

Apr 13, 2003 · 24 min

When a friendly robot-dog invites Astro to watch a game of Rocket Ball, he looks forward to a fun day at the ballpark, Instead, the game turns chaotic when the robot players start

S1·E3

Destination Deimos

Apr 20, 2003 · 24 min

On Deimos, one of the two moons of Mars, robot miners ignore the orders of their human foreman and mysteriously begin digging on their own. Astro must work fast to discover the cau

S1·E4

Into Thin Air

Apr 27, 2003 · 24 min

The evil Skunk tricks Denkou, an "Invisible Robot," into committing a string of robberies. Astro soon realizes that Denkou is not bad, she just doesn't know the difference between

S1·E5

Rainbow Canyon

May 4, 2003 · 24 min

An experiment in advanced weather technology has turned a desert canyon into fertile farmland, and proven once again that humans and robots can work together, But a sudden rash of

S1·E6

Birth of Atlas

May 11, 2003 · 24 min

Dr. Tenma builds a powerful robot named Atlas whose abilities rival Astro's, But Atlas has a rebellious nature and begins to destroy Metro City. Astro must save the city from Atlas

S1·E7

Astro Vs. Atlas

May 18, 2003 · 24 min

As Atlas continues his rampage, Astro learns the truth about his own past. With the memory circuits reactivated, Astro remembers being created, rejected, abandoned by Dr. Tenma, As

S1·E8

Neon Express

May 25, 2003 · 24 min

When Kato hides a hyper-accelerator virus on the robotic super train Neon Express, it sends the train and its passengers speeding out of control. Astro must rescue the passengers a

S1·E9

Franken

Jun 1, 2003 · 24 min

A mysterious robot terrifies humans as he hunts for scrap robot parts and uses them to rebuild his own malfunctioning system. The police target the robot for destruction, but he ma

S1·E10

The Venus Robots

Jun 8, 2003 · 24 min

In order to take advantage of their special freezing powers, Dr Tenma pretends to be the long-awaiting leader of a group of advanced robots. The Robots don't realize that their fre

S1·E11

Robot Circus

Jun 15, 2003 · 24 min

A robot circus star named Reno is revealed to be a human boy in disguise. Astro must save the circus, and prevent the authorities from taking the boy from his robot family.

S1·E12

Reviving Jumbo

Jun 22, 2003 · 24 min

Skunk reactivates Jumbo, a giant robot and uses him to stage a daring prison break. Astro must stop Jumbo and turn him back into the gentle giant that he really is.

S1·E13

Little Sister, Big Trouble

Jul 6, 2003 · 24 min

Doctor O'Shay creates a robot-sister, Zoran, for Astro. While Zoran is off exploring she is captured by the giant robot bird Katari, and only her powerful big brother can save her!

S1·E14

Micro Adventure

Jul 13, 2003 · 24 min

A micro-robot attacks Zoran's operating system from the inside. Astro must shrink down to microscopic size and go inside of Zoran's system to fight the micro-robot and save his sis

S1·E15

Only a Machine

Jul 20, 2003 · 24 min

Astro must stop Erasabot from sucking out the artificial intelligence from all the robots in Metro City.

S1·E16

Robot Hunters

Jul 27, 2003 · 24 min

An android robot hunter is attacking innocent robots and dismantling them for sale on the black market. Astro befriends the hunter and tries to help him overcome the programming he

S1·E17

The Rise of Pluto

Aug 3, 2003 · 24 min

Pluto vows to become the supreme robot champion of the world. As he defeats his rivals, he gains their special powers and becomes even stronger. Astro is the only one left who can

S1·E19

Robot Boy

Aug 17, 2003 · 24 min

Astro's human friend Matthew loves robots so much that he pretends he is one. But when he tries to use "robot" powers to save his mom from a space shuttle accident, it's up to Astr

S1·E20

Dawn of the Techno-Revolution

Aug 24, 2003 · 24 min

With his authority challenged by Shadow, Dr. Tenma sets out to prove that Astro is loyal to the robot cause and will join them in leading the robot revolution.

S1·E21

Dragon Lake

Aug 31, 2003 · 24 min

Astro must find the poison around Dragon Lake. When he gets there he meets the eccentric explorer Gulliver, and they face-off against the toxic Repo Girls in a fight to save Dragon

S1·E22

The Legend of Tohron

Sep 7, 2003 · 24 min

Astro must protect Princess Abby against a plot to take over her ancient land of Mayura.

S1·E23

Lost In Outland

Sep 14, 2003 · 24 min

While saving the planet from a falling satellite, Astro is damaged and loses his memory. Boon, a scientist with a mysterious past, tries to help Astro recover before another satell

S1·E24

March of the Micro Bears

Sep 21, 2003 · 24 min

When Shadow unleashes an army of mind-controlling teddy bears on Metro City, it's up to Astro to stop them before they take over the entire population.

S1·E25

Deep City

Sep 28, 2003 · 24 min

An underground city threatens the environment, so the environment fights back--tree roots attack the city and its people. Astro must restore the delicate balance of nature to save

S1·E26

The Blue Knight

Oct 5, 2003 · 24 min

When air-blimp is threatened with a wormhole device, Astro is blamed and arrested. The Blue Knight helps him escape from jail, and together they must save the blimp and prove Astro

S1·E27

Old Dog, New Tricks

Oct 12, 2003 · 24 min

Astro partners with Yuko's Uncle Wally to solve a series of baffling robberies involving a dragon-like robotic monster.

S1·E28

Hydra-Jacked

Oct 19, 2003 · 24 min

A power station orbiting the Earth is set to self-destruct, and Astro partners with the Blue Knight to try to save the robots. They uncover a secret regarding the corrupt humans wh

S1·E30

Geo-Raider

Nov 2, 2003 · 24 min

Astro joins an expedition to the center of the earth, when a member of the crew causes a mutiny. Only Astro can protect the crew and save the expedition before an eruption of lava

S1·E31

Gideon

Nov 9, 2003 · 24 min

S1·E32

The Secret of Blue Knight

Nov 16, 2003 · 24 min

When Astro and The Blue Knight try to stop illegal, underground robot fights, they are forced to fight each other. As they prepare for battle, Astro learns the truth about The Blue

S1·E35

Firebird

Dec 7, 2003 · 24 min