1x1 - Power Up!

April 6, 2003

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) Astro discovers his purpose for being activated.

1x3 - Destination Deimos

April 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.

1x4 - Into Thin Air

April 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.

1x5 - Rainbow Canyon

May 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.

1x6 - Birth of Atlas

May 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.

1x7 - Astro Vs. Atlas

May 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.

1x8 - Neon Express

May 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.

1x9 - Franken

June 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.

1x10 - The Venus Robots

June 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?

1x11 - Robot Circus

June 15, 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.

1x12 - Reviving Jumbo

June 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.

1x13 - Little Sister, Big Trouble

July 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!

1x14 - Micro Adventure

July 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.

1x15 - Only a Machine

July 20, 2003

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

1x16 - Robot Hunters

July 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.

1x17 - The Rise of Pluto

August 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.

1x18 - The Fall of Archeron

August 10, 2003

1x19 - Robot Boy

August 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.

1x20 - Dawn of the Techno-Revolution

August 24, 2003

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.

1x21 - Dragon Lake

August 31, 2003

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 Lake.

1x22 - The Legend of Tohron

September 7, 2003

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

1x23 - Lost In Outland

September 14, 2003

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 satellite hits Earth.

1x24 - March of the Micro Bears

September 21, 2003

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.

1x25 - Deep City

September 28, 2003

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 the humans.

1x26 - The Blue Knight

October 5, 2003

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's innocence.

1x27 - Old Dog, New Tricks

October 12, 2003

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

1x28 - Hydra-Jacked

October 19, 2003

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 who caused the danger.

1x29 - The Case of the Phantom Fowl

October 26, 2003

1x30 - Geo-Raider

November 2, 2003

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 destroys them all.

1x31 - Gideon

November 9, 2003

1x32 - The Secret of Blue Knight

November 16, 2003

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 Knight's past.

1x33 - Fairy Tale

November 23, 2003

1x34 - Shape Shifter

November 30, 2003

1x35 - Firebird

December 7, 2003

1x36 - Space Academy

December 14, 2003

1x37 - Atlas Strikes Back

December 14, 2003

1x38 - Battle-Bot

December 28, 2003

1x39 - Time Hunters

January 11, 2004

1x40 - Escape from Volcano Island

January 18, 2004

1x41 - Avalanche

January 25, 2004

1x42 - Battle of Steel Island

February 1, 2004

1x43 - Undercover

February 8, 2004

1x44 - Into the Dragon's Lair

February 15, 2004

1x45 - Night Before the Revolution

February 22, 2004

1x46 - Robotonia

February 29, 2004

1x47 - Showdown in Robotonia

March 7, 2004

1x48 - Journey to Tomorrow

March 14, 2004

1x49 - Astro Reborn

March 21, 2004

1x50 - The Final Battle

March 28, 2004