After a horrific skirmish with an abominable, six foot space beast, Jimmy returns from an excavation on the Twonkus-3 comet with a small furry creature burrowed in his soil samples. After resisting his instincts to send it back, Jimmy and Carl adopt the critter and call it Twonky. The Twonky is an immediate hit, especially after it coughs up a dozen more identical colorful creatures just like it. Everyone thinks they are great - until these dream pets hear music and morph into violent and wild monsters.
After a run in with a radiation belt in outer space, Jimmy, Cindy, Carl, Sheen and Libby are all endowed with super powers.
The famous film director, Quintin Smithee is coming to Retroville to make his next big movie, and Jimmy, Cindy, Libby, Sheen and Carl all have starring roles.
Jimmy's dad loses his job at the now defunct automotive plant which means that the Neutrons may have to move to a new town. As a last-ditch effort to keep the family in Retroville, Hugh applies for a job as a toy inventor.
After a hovercraft accident in the middle of the ocean, Jimmy and Cindy find themselves stranded on a deserted island.
Jimmy is recruited by the most prestigious science college in the country to be their new superstar student. But when he gets there, Jimmy becomes the unwitting target of rival student, Seymour Nimmelfarb.
Debi Derryberry
James Isaac Neutron
Jeff Garcia
Sheen Juarerra Estevez
Mark DeCarlo
Hugh Neutron
Rob Paulsen
Carlton Ulysses Wheezer
Megan Cavanagh
Judy Neutron