The BEST episodes of Astro Boy (2003)

Every episode of Astro Boy (2003) ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Astro Boy (2003)!

Astro Boy (2003) tells the story of a youthful robot boy - Astro -modeled after the deceased son of a research scientist, Dr. Tenma. Originally intended to be kept a secret, the atomic-powered robot becomes a reluctant superhero who fights for justice and peace for humans and robots alike. Created in Metro City he lives among a 'retro-futuristic' society populated by humans and robots. His creator Dr. Tenma, head of the Ministry of Science, builds Astro in his son's image. Astro never can fill the void that Dr. Tenma feels over the loss of his son. Astro Boy (2004) is a show that you can't miss. Tenma shuts down Astro, burns down the Ministry of Science and flees. Some time later, Astro is discovered by Dr. O'Shay, the new head of the Ministry. Dr. O'Shay takes in Astro and serves as his mentor. Driven by the belief that robots and humans should be friends, Dr. O'Shay is Astro's greatest ally. He provides Astro with a home, enrolls him in school and creates a robot family for him. Astro possesses superb strength, including jet-rocket feet and arms that allow him to fly at extreme speeds. However, the secret to his victories is not his super-powers; the quality that makes him superior to other robots is his artificial brain, the most advanced in the world. This unique quality, termed kokoro in Japanese, allows Astro to experience all of the same emotions as humans. He's clever, resourceful and has a strong sense of justice, always attempting to reason with his adversaries. Mankind's only hope of surviving the onslaught of rebellious robots is a robot himself...the fearless, selfless, incorruptible champion known as Astro. In his quest for peace and justice, Astro often goes it alone, but he is occasionally aided by his robot sister or even rebel robots that he is able to enlist. Astro also has human friends from school who often become entangled in his conflicts. Astro Boy (2004) is produced by Sony Pictures Entertainment.

Last Updated: 6/26/2025Network: The WBStatus: Ended
Destination Deimos
star
8.54
35 votes

#1 - Destination Deimos

Season 1 - Episode 3 - Aired 4/20/2003

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 cause of the robots' strange behavior before Intergalactic Security exterminates them for disobeying.

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Atlas
star
8.50
10 votes

#2 - Atlas

Season 1 - Episode 6 - Aired 5/11/2003

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, while beginning to learn the secrets of his own past.

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Astro vs Atlas
star
8.25
8 votes

#3 - Astro vs Atlas

Season 1 - Episode 7 - Aired 5/18/2003

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, Astro must face difficult questions about his own identity and his ultimate destiny.

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The Rise of Pluto
star
8.17
6 votes

#4 - The Rise of Pluto

Season 1 - Episode 17 - Aired 8/3/2003

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 stop Pluto.

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The Fall of Acheron
star
8.17
6 votes

#5 - The Fall of Acheron

Season 1 - Episode 18 - Aired 8/10/2003

Atom and Uran convince Pluto to stop his destructive ways. But now Pluto's inventor, Shadow, produces a more wicked, more powerful version of Pluto called Dark Pluto. When Dark Pluto attacks, there's only one way Atom can defeat the evil robot: with Pluto's help.

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Rainbow Canyon
star
8.10
10 votes

#6 - Rainbow Canyon

Season 1 - Episode 5 - Aired 5/4/2003

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 earthquakes and storms threatens to wreck the project. It's up to Astro to find out who is behind the evil plan.

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Franken
star
8.00
8 votes

#7 - Franken

Season 1 - Episode 9 - Aired 6/1/2003

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 may not be the "evil robot" he appears to be, and Astro must uncover the truth before its to late.

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Little Sister, Big Trouble
star
8.00
8 votes

#8 - Little Sister, Big Trouble

Season 1 - Episode 13 - Aired 7/6/2003

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!

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Into Thin Air
star
7.89
9 votes

#9 - Into Thin Air

Season 1 - Episode 4 - Aired 4/27/2003

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 right and wrong and Astro is the only one that can teach her.

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Neon Express
star
7.88
8 votes

#10 - Neon Express

Season 1 - Episode 8 - Aired 5/25/2003

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 and prevent the train from crashing into the center of Metro City.

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The Venus Robots
star
7.88
8 votes

#11 - The Venus Robots

Season 1 - Episode 10 - Aired 6/8/2003

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 freezing functions cause terrible destruction by freezing everything in sight. Can Astro convince the Robots to reject Tenma's evil influence?

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Robot Hunters
star
7.83
6 votes

#12 - Robot Hunters

Season 1 - Episode 16 - Aired 7/27/2003

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 was given by Skunk.

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Rocket Ball
star
7.75
8 votes

#13 - Rocket Ball

Season 1 - Episode 2 - Aired 4/13/2003

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 destroying the stadium and threatening the human spectators. Astro must find a way to save the humans and get the robot athletes under control!

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The Final Battle
star
7.75
4 votes

#14 - The Final Battle

Season 1 - Episode 50 - Aired 3/28/2004

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Only a Machine
star
7.57
7 votes

#15 - Only a Machine

Season 1 - Episode 15 - Aired 7/20/2003

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

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Power Up!
star
7.45
11 votes

#16 - Power Up!

Season 1 - Episode 1 - Aired 4/6/2003

Dr. O'Shay activates Astro by drawing all the citys power and using it to jolt Astro to life, but the power surge overloads the Metro City Power System turning Magnamite, the robotic power-controller, into a robotic menace. When Magnamite comes crashing across the city like a huge mechanical octopus, Astro must quickly master his amazing powers in order to save the city from the rampaging robot.

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Reviving Jumbo
star
7.43
7 votes

#17 - Reviving Jumbo

Season 1 - Episode 12 - Aired 6/22/2003

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.

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Robot Circus
star
7.43
7 votes

#18 - Robot Circus

Season 1 - Episode 11 - Aired 6/16/2003

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.

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Micro Adventure
star
7.43
7 votes

#19 - Micro Adventure

Season 1 - Episode 14 - Aired 7/13/2003

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 sister.

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Robot Boy
star
7.40
5 votes

#20 - Robot Boy

Season 1 - Episode 19 - Aired 8/17/2003

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 Astro to save them both.

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Astro Reborn
star
7.33
3 votes

#21 - Astro Reborn

Season 1 - Episode 49 - Aired 3/21/2004

Showdown in Robotonia
star
7.33
3 votes

#22 - Showdown in Robotonia

Season 1 - Episode 47 - Aired 3/7/2004

Robotonia
star
7.33
3 votes

#23 - Robotonia

Season 1 - Episode 46 - Aired 2/29/2004

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Atlas Strikes Back!
star
7.33
3 votes

#24 - Atlas Strikes Back!

Season 1 - Episode 37 - Aired 12/21/2003

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Firebird
star
7.33
3 votes

#25 - Firebird

Season 1 - Episode 35 - Aired 12/7/2003

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