Lex Luthor's pet lizard uses a growth ray to turn a caterpillar into a giant monster! (This episode caused continuity errors because it shows Streaky having super powers which he doesn't get until episode 3)
After a duplicating ray accidentally gives him Krypto's powers, Streaky learns about the responsibility that comes with his new abilities and, with a little help from Krypto, becomes a superhero.
When an agent of Mechanicat uses a disintegrator ray on Streaky, it's up to Krypto to save the day.
Ace the Bat-Hound arrives in Metropolis and enlists Krypto's help to track down and stop the Joker's Hyenas latest scheme.
When the normal dogs imitate other animals, they discover Mechanikat and Snooky are up to trouble and Mechanikat exposes Krypto to Kryptonite. Now it's up to Streaky to save the day.
Kevin uncovers a Kryptonian robot dog inside Krypto's spaceship, but this new friend only wants to play with Krypto.
During a super loop in mid-air by Krypto, Kevin loses his communicator. It falls in the zoo, where Bernie, the Zoo Kooper discovers the device—and accidentally gets tricked by a mischievous little monkey named Albert into releasing the animals from their cages. It's up to Krypto and Bernie to get all of the animals back to the zoo.
A movie star dog wears a super-powered suit after making a pact with Snooky.
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. Unfortunately, the only way the aliens can get Kevin and Krypto's attention is to shrink them down to their size.
Kevin's nasty cousin Bailey blackmails him when he finds out about Krypto.
Snooky uses brain-washing collars to make the Dog Star Patrol perform in a space circus
Ignatius changes the weather, making it summer during the winter.
Bat Hound and Streaky must team up when Krypto is away.
Bat Hound becomes too silly to fight crime after being affected by giggle bubbles during the pursuit of the Joker's Hyenas.
When the Dog Stars get some chew toys, they begin to get on each others nerves.
Tail Terrier finds out that Krypto's civilian life is practically paradise and decides to become an Earth dog citizen himself. He discovers, however, that the grass isn't always greener on the other side.
Drooly tries applying for membership in the Dog Star Patrol before Snooky Wooku*ms launches his next plan.
Ignatious uses a time machine to travel back in time to the period of the Dinosaurs, but Krypto and Kevin come back with him.
Krypto is forced to team up with Ignatius to investigate thefts at Lexcorp caused by Mechanikat and Snooky Wooku*ms.
An alien growth ray turns Melanie into a 50-foot giant toddler.
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.
Krypto becomes jealous when he thinks Kevin likes Bat Hound more than Superdog.
Krypto and Streaky have an undersea adventure when red kryptonite turns them into fish.
Waddles tricks Streaky into get into a machine at S.T.A.R. Labs that lets him steal Streaky's powers. To make matters worse, whenever Krypto and Ace get near him, Waddles causes a distraction. How can they get Streaky's powers back?
Kevin plays one of his dad's old video games on Krypto's rocket computer. But when he gets transported into the game, Krypto and Streaky have to help him fight his way to the end.
A guard dog for STAR Labs, named Buddy, slips into a vat of elastic chemicals and is able to stretch and mold his body.
Thundermutt asks Ace if he can study the way Ace fights crime so he can perform his new movie. Ace soon realizes the pain of helping him out.
Mertin the Magic Rabbit is wreaking havoc on the fair. However, things get worse when Krypto is caught in the act as well. Ace has to retrieve Krypto and try and out-magic Mertin with Stretch-O-Mutt!
The Supercat Fan Club wants to go on a field trip with Streaky. The Penguin's birds, however, have other plans for the heroes...
Mechanikat blocks out the yellow rays of the sun with his new satellite, creating red light instead. When Krypto and Streaky become powerless, Stretch-O-Mutt has to save the day!
In order to find Krypto's secret rocket, Mechanikat sends Snooky in disguise to infiltrate the Supercat Fan Club. He soon comes to like his new friends, however...
Peek and Pleek return to show Krypto and Kevin their latest criminal capture, named Plunk. But when Plunk escapes, a chase leads Krypto and Plunk into Streaky's body..
Krypto is hit with a Cat-a-beam that makes him act and think like a cat! It turns out Mechanikat has conquered a planet and turned it into Catopia. Streaky finds the planet and thinks it's "heaven". Ironically, so does Krypto when he is forced to come with Mechanikat and be brainwashed. Streaky must find some way to change Krypto back, or Krypto will think he's a cat for the rest of his life.
"Robbie the Bird Wonder" returns from the South, only to get a jumpstart from Bat Hound because his superheroing hasn't been doing well. Both Robbie and Streaky notice that Krypto and Bat-Hound is missing, however, but manage to find where they are with Krypto wearing kryptonite over his neck and Bat-Hound tied to Krypto on a rocket. Streaky tries to save them, but gets caught as well. It turns out Isis and Mechanikat have teamed up, so now Robbie will have to save the day, despite having a bad time rounding up crooks.
While Krypto's away, Streaky joins the Dog Stars on a missions to capture an intergalactic peanut pilferer. When the alien elephant gets away, they follow it to a giant peanut-shaped ship the size of a planet. Can Streaky and the Dog Stars successfully infiltrate the ship and get the peanuts back?
Brainy arrives outside Kevin's house, to tell Krypto that a new prankster/criminal is on the loose, so they try to guard a Timestopper, a device that freezes time. Meanwhile Barrump Barrump tries to steal the Timestopper from Kevin, but Kevin uses it to his advantage.
