Snooky attacks Krypto with an aging machine and inadvertently ages Kevin into an adult. Then Bat Hound finds his life turned upside down when Thunder Mutt follows him around as research for his next role a dog detective.

Kevin and Andrea team up when they become super-powered like Krypto. Then Krypto and Kevin are transferred into a videogame that tests their game-playing skills and superpowers.

When Andrea learns that Krypto and Streaky are Superdog and Supercat, she battles with them against Mechanikat. Then Bat Hound joins Stretch-O-Mutt when Merton the Magic Rabbit captures Krypto.

Streaky and Stretch-O-Mutt team up on the docks to battle a sinister parrot captain and his crew of rats. Then Robbie the Bird Wonder teams with Streaky to save Bat Hound and Krypto.

The Dog Stars argue as to who should take over the ship when Brainy Barker becomes incapacitated. Then Snooky infiltrates Streaky's fan club in order to scheme against Supercat and Superdog.

Bailey returns to prove Superdog's identity Then Plunk, a captured criminal, escapes.

When the Dogstars get sick, Stretch-O-Mutt assumes their identities to fool Mechanikat into thinking everything is normal. Then Snooky hits Krypto with a beam that makes the dog think he's a cat.

When Mechanikat builds a robotic version of himself to help run his ship, the robot turns on him. Then when a guard dog named Buddy falls into a vat of rubberizing solution, he becomes Stretch-O-Mutt, the newest canine crimefighter in Metropolis.

While at camp, Kevin uncovers a scheme to take over the world by a group of beavers. Then Streaky goes on a crusade to hunt down alien elephants that have stolen all the peanuts in Metropolis.

Ignatius creates chaos when he uses a duplicating machine to duplicate himself. Then Streaky takes his fan club to Bat Hound's Metropolis stronghold, and puts Krypto and Bat Hound in danger.

Mechanikat turns himself into a giant robot to defeat Superdog. Then Krypto and Kevin must defeat an intergalatic prankster who has stolen a device that can stop time.

While Andrea prepares to celebrate Hanukkah, Ignatius inadvertantly brings a huge, angry snowman to life. Krypto defeats the angry snowmen just in time for everyone to celebrate Hanukkah.

Isis gets the Pied Piper's flutes and takes control of Metropolis' rats, and Krypto and Bat Hound. Then Stretch-O-Mutt must come to the rescue when Mechanikat bathes the Earth in red light.

Krypto tells the story about how he arrived on Earth and met Kevin. Then, Krypto continues his story, explaining how he became known as Superdog.

A flea from Krypton besieges Krypto when it chews his hide. Then, Krypto helps save a caterpillar after hungry Ignatius enlarges the bug with a growth ray.

Krypto has his first encounter with the Dog Stars as they try to capture an evil kitten named Snooky Wookums. Then, Streaky learns a lesson about being a superhero after he gets superpowers from Krypto.

When a teleporter gets stuck in Melanie's diaper, Krypto and Kevin have to save her before Melanie teleports herself into danger. Then, Streaky feels neglected when Andrea adopts a new cat named Delilah.

Kevin and Krypto have to spend a day in each other's bodies when red kryptonite causes their minds to switch. Then, Krypto becomes Bathound's partner when they chase after Joker's hyenas.

Kevin learns what it's like to be a dog when aliens adopt him as their pet. Then, when dogs all over the city start acting like other animals, Krypto investigates and discovers that Mechanikat is the cause.

When Krypto loses his powers because of red kryptonite, Bathound tries to equip him with bat gear. Then, Krypto is stalked by a companion robot dog from Krypton who is programmed to be his best friend.

Krypto poses as an old firehouse Dalmatian in hopes of helping the aging dog keep his job. Then, chaos reigns at the zoo when a zookeeper's assistant takes Kevin's communicator and starts doing everything the animals request.

Streaky tries to be a big-time superhero to impress his nephew, Squeaky. Then, a movie star dog makes a pact with Snooky so that the actor can wear a super suit that gives him powers.

When Krypto is captured by Mechanikat, the Dog Stars send in a reluctant Streaky to sneak aboard Mechanikat's ship. Then, Krypto and Kevin are reduced in size by aliens who are collecting specimens from other worlds.

Streaky programs Dogbot to do super deeds so that Krypto can spend more time with Kevin. Then, Kevin's bad boy cousin, Bailey, visits and discovers Krypto's secret.

Bathound has a crisis in confidence when he pursues Catwoman's cat, Isis, who is able to use a bad luck charm against him. Then, Krypto must come to the rescue of the Dog Stars when they are forced to perform in a space circus.