Astro fights Magnamite to save the city. - Dr. O'Shay activates Astro by drawing all of the city's power and using it to jolt Astro to life.

A game of Rocket Ball turns dangerous. - When a friendly robot-dog invites Astro to watch a game of Rocket Ball, he looks forward to a fun day at the ballpark.

Robot miners disobey their orders. - 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 teaches Denkou right from wrong. - The evil Skunk tricks Denkou, an "invisible robot," into committing a string of robberies.

Astro investigates a weather experiment. - An experiment in advanced weather technology has turned a desert canyon into fertile farmland, and proven once again that humans and robots can work well together.

Astro battles the powerful robot Atlas. - 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 faces tough issues from his past. - As Atlas continues his rampage, Astro learns the truth about his own past. With his memory circuits reactivated, Astro remembers being created, rejected, and abandoned by Dr. Tenma.

Astro must stop a runaway robotic train. - 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.

A robot scares humans, Astro investigates. - A mysterious robot terrifies humans as he hunts for scrap robot parts and uses them to rebuild his own malfunctioning system.

Robots with freezing powers threaten all. - In order to take advantage of their special freezing powers, Dr. Tenma pretends to be the long-awaited leader of a group of advanced robots.

Astro must save a boy in the robot circus. - Astro's day at the circus is interrupted when it is revealed that Reno, one of the circus' robot stars, is actually a human boy in disguise.

Skunk uses Jumbo for a daring prison break. - 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.

Astro must save his robot-sister Zoran. - Doctor O'Shay creates a robot-sister, Zoran, for Astro. Zoran goes off on her own to explore and discovers the giant robot bird Katari cruising over Metro City.

Astro must stop the super strong Pluto. - Pluto, one of the strongest robots Metro City has ever seen, has vowed to become the supreme robot champion of the world.

Astro saves Pluto, and they face Acheron. - Astro and Zoran convince Pluto to stop his destructive ways. But now Pluto's inventor, Shadow, produces a more wicked, more powerful version of Pluto called Acheron.

Astro's human friend thinks he's a robot. - Astro's new human friend Matthew loves robots so much that he dresses up in scrap metal and pretends that he IS a robot.

Dr. Tenma tries to prove Astro's loyalty.

Astro fights the Repo Girls at Dragon Lake. - When the land around Dragon Lake is poisoned and begins to die, Astro must find the source of the poison.

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

Astro must regain his memory to save Earth. - While saving the planet from a falling satellite, Astro sustains damage to his system and plummets to the Earth. When he awakens, he has lost his memory.

Mind-controlling teddy bears attack. - 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.

Astro must balance nature and the city. - 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.

The Blue Knight helps Astro escape jail. - When an air-blimp is threatened with a wormhole device, Astro is blamed and arrested.

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

Astro must save a doomed power station. - After a computer heist goes bad, a group of robots are left stranded aboard a power station orbiting Earth.

Zoran joins Detective Wally Kisgari. - Zoran is jealous of her big brother's super-hero status, so she joins Detective Wally Kisagari to try and solve a strange case involving a bird-like phantom that has been appearing throughout the city.

Astro faces a mutiny at the Earth's core. - Astro joins an expedition to the center of the earth, even though Damon, the leader of the expedition, tells him that he doesn't trust robots.

"The Phantom Pirate" haunts the deep sea. - Gideon, a prototype exploration robot that looks like a dolphin is afraid to go on his first mission into the deep sea because of "The Phantom Pirate," a legendary underwater ghoul.

Astro meets a spoiled girl named Nina. - Astro and his friends befriend Nina, a spoiled little girl who has everything money can buy.

Astro must stop the theft of Lumanite. - Lumanite is a rare and valuable substance recently discovered on the moon.

Rock is back and seeks revenge on Astro. - After being defeated by Astro, Rock is back and looking for revenge--this time he's trying to capture The Firebird, an ultra-advanced space-being who guards the secrets of the universe.

Astro goes to space camp for the Falcon II. - Astro goes to a space camp to work with a group of students on the special exploration ship Falcon II.

Atlas is recovered and used for evil. - The anti-robot forces recover Atlas from space, and install a mind-control device to turn him back into an attack robot. Once again, Astro is forced to fight his old ultra-powerful nemesis.

Astro rescues a girl from Space Raiders. - Astro and the Blue Knight must help Emily, a young robot girl whose parents have been captured by the pirate-like Space Raiders.

Zoran is caught in a time machine. - Hunters from the future are stealing animal DNA from different time periods in order to enhance their own powers.

Astro is nominated for "Robot of the Year". - Astro has been nominated for the "Robot of the Year" award--but the ceremony is interrupted when Drake and his anti-robot group attack the ship.

Astro and Yuko travel to the arctic. - Astro accompanies Yuko on an expedition to the arctic to find a lost robot who was part of a special space exploration team lead by Yuko's father.