After his spaceship malfuntions, Krypto arrives on Earth and immediately befriends a young boy named Kevin who takes him in.
""Super Flea"" A flea from the planet Krypton gives Krypto one super itch! ""A Bug's Strife"" Lex Luthor's pet lizard uses a growth ray to turn a caterpillar into a giant monster!
""Meet The Dog Stars"" A group of superdogs from outerspace come to earth to catch a villainous cat who has been wreaking havoc all over the cosmos! ""The Streaky Story"" Ever wonder how Streaky got Krypto's powers? This story reveals that secret!
""Diaper Madness"" Kevin and Krypto have to babysit Melanie while Kevin's Mom is away. But when a teleporter device ends up in Melanie's diaper, complete madness abounds! ""Feline Fatale"" Streaky feels neglected when Andrea adopts a new cat named Delilah.
Dog-Gone Kevin: After founding red kryptonite for the very first time, Krypto and Kevin swtich bodies, and each of them found how great is to be the other, or is it? The Dark Hound Strikes: Ace the Bat-Hound arrives in Metropolis an enlist Krypto's help to track down and stop Joker's Hyenas latest scheme.
My Pet Boy: Kevin learns to take it easy on dogs, even if they have super-powers like Krypto, when he becomes a pet for a giant male dog. Dem Bones: When the normal dogs imitate other animals, they discover Mechanikat and Snooky are up to trouble, and Mechanikat exposes Krypto to Kryptonite, and it's up to Streaky to save the day.
Bat Hound for a Day: When Krypto is rendered powerless by the effects of red kryptonite, Ace the Bat Hound gives him a bat collar so they can track down the Penguin's birds. Dogbot: Kevin uncovers a Kryptonian robot dog inside Krypto's spaceship, but this new friend only wants to play with Krypto.
""Old Dog, New Tricks"" When Krypto and Streaky meet up with a fire Dalmatian named Smokey, who has the worried of a new puppy on his mind. Streaky assumes the new dog is a Smokey ""replacement"", much to Krypto's disbelief. Streaky gets the bright idea to use Krypto as Smokey's super-double. ""Talk to the Animals"" During a super loop in mid-air by Krypto, Kevin loses his communicator. It falls in the zoo, where Bernie, the Zoo Keeper discovers the the device, and accidentally gets tricked by a nasty little monkey. It's up to Krypto and Bernie get all of the animals back to the zoo.
My Uncle the Superhero: Streaky wants to impress his nephew, Squeaky, by making him believe he is a big-time superhero. Top Dog: A movie star dog wears a super-powered suit after making a pact with Snooky.
Puss in Space Boots: Krypto is missing and it's up to Streaky the Cat to rescue him. Teeny Tiny Trouble: Two little aliens have a VERY BIG problem. Their spaceship is broken and they need to make repairs before they can refuel it. They decide to turn to two earth beings for help, namely Kevin and Krypto. Unfortunatly, the only way the aliens can get Kevin and Krypto's attention is to shrink them down to their size.
Dogbot to the Rescue. Streaky programs Dogbot to help Krypto so he can have more time with Kevin. Bad Bailey. Kevin's nasty cousin Bailey blackmails him when he finds out about Krypto.
Bat Hound's Bad Luck. Catwoman's cat, Isis, steals a cursed gem that causes Ace to run into a string of bad luck. Circus of the Dog Stars. Snooky uses brain-washing collars to make the Dog Star Patrol preform in a space circus.
The Living End: Red kryptonite causes Krypto's tail to detach from his body. The Dog Days of Winter: Ignatius changes the weather, making it summer during the winter.
Bad Hair Day: Ignatius creates a formula to grow super hair. The Cat and the Bat: Bat Hound and Streaky must team up when Krypto is away.
Melanie's Monkey: Melanie learns that monkeys belong in the rainforest when she encounters one. Funny Business: Bat Hound becomes too silly to fight crime after being affected by laughing gas.
Now You See Him...: Streaky accidently gets the power of invisibility. However, he soon learns the about the problems it causes. Bones of Contention: When the Dog Stars get some chew toys, they begin to get on each other's nerves.
Superdog? Who's Superdog?: Krypto gets amnesia due to red kryptonite and can't remember who he is. The Junkyard Dogs try to turn him into a bad dog. The Good Life: The Tail-Roping member of the Dog-Stars finds out that Krypto's civilian life is practically paradise and decides to become an Earth dog citizen himself, only to find out that the grass isn't always greener on the other side.
Streaky's Super Cat Tale. Streaky tells a tall tale to his fan club. The New Recruit. Drooly applies for membership in the Dog Star Patrol.
Up, Up and Away Ignatious creates a formula that makes people levitate like balloons! Dinosaur Time Ignatious uses a time machine to travel back in time to the period of the Dinosaurs, but Krypto and Kevin come back with him.
Puppy Problems: Mechanikat turns the Dog Stars into puppies. Switching Sides: Krypto is forced to team up with Ignatius to investigate thefts at Lexcorp.
Leaf of Absence. Krypto and Ace take on a mutant dog-plant hybrid who is stealing all the trees in Metropolis. Big Sister. An alien growth ray turns Melanie into a 50-foot giant toddler.
Bat Hound Meets the Dog Stars: While the Dog Stars are repairing their ship on Earth, Krypto introduces them to Ace. He is soon mocked because he doesn't have any powers of his own, so he leaves. However, when Snooky abducts Hot Dog without leaving a trace, Ace may be the only one the Dog Stars can count on. A Dog's life: Tired of living like a rat, Jimmy disguises himself as a dog. But when Mutsy's group wants him to join them, he may be in over his head.
Stray for a Day: A royal cat takes the day off with Streaky, allowing Isis the opportunity to steal the Queen's jewels. Ruffled Feathers: Krypto becomes jealous when he thinks Kevin likes Bat Hound more than Superdog.
Bat Hound and the Robin: Bat Hound is at his wit's end when a feisty Robin decides to become his crime-fighting partner. Furry Fish: Krypto and Streaky have an undersea adventure when red kryptonite turns them into fish.
Tusky looses his tooth and the Mechanicat is after it. Waddles, the Penguin's penguin steals Streaky's superpowers.