When a mission on his home planet goes wrong, Krypto ends up on Earth as a fully grown dog with super powers, on the lookout for a new family. He meets Kevin Whitney, a new boy in town who could do with a friend.

Krypto gets a super-itch from a flea.A caterpillar turns into a monster.

Several superdogs catch a villainous cat that has been wreaking havoc; Streaky the Supercat becomes Superdog's sidekick.

Kevin and Krypto babysit Melanie while Kevin's mum is away; Krypto must save Streaky when an agent uses a disintegrator ray on the cat.

Krypto and Kevin switch bodies; Ace arrives in Metropolis and enlists Krypto's help to stop the hyenas' latest scheme.

Kevin becomes a pet for a giant male dog; Melikat exposes Krypto to Kryptonite--and Streaky must save the day.