Jimmy takes a journey to a far-off comet called Twonkus 3 and some adorable alien creatures called Twonkies follow him back to Earth in his sand samples. Carl gives them away as pets, despite Jimmy's warnings. When Jimmy finds out the Twonkies become dangerous monsters when exposed to music, he and his friends must round them up and send them back to space before it's too late.

King Goobot gathers several of Jimmy's enemies and they team up to defeat him once and for all. When Jimmy and Sheen are captured, it's up to Carl, Cindy and Libby to rescue them.

The pilot of Jimmy Neutron: Boy Genius. The short was going to start the series, but Nickelodeon liked it so much that they decided to make the film and the series was produced a couple of years later. Jimmy runs away after his parents ground him for launching Carl off the roof. Little do his folks know that Jimmy has been abducted by aliens, who think he knows about earth's defense systems.

The Yolkians have come to earth, but this time they seek out only peace and brotherhood with the people of Retroville. While Jimmy Neutron suspects the worst, everyone in town is ready to forgive and forget. This special serves as a direct sequel to the Jimmy Neutron movie.

Season 3, Episode 16

After the evil King Goobot sends his assistant Ooblar to steal Jimmy Neutron's Mark IV rocket ship in an attempt to enslave the earth, it's up to Jimmy, Goddard, Carl, and YOU to go after Ooblar in a high speed chase through Nicktoon Studios!

Experience how Jimmy Neutron uses his inventions in everyday situation adventures and how the events of the movie unfold.

Retroville becomes ground zero for a meteor engraved with a mysterious alien message, which only the best and brightest(naturally, Jimmy) can translate. When he finally figures the message out, he and his friends are teleported into deep space and are forced to become contestants on an intergalactic reality game show, where the losers have their home planets destroyed.

Jimmy is enlisted as a spy by the Big Top Secret Organization. His mission: find and rescue Agent X - who turns out to be Jimmy's movie hero, Jet Fusion.

Season 2, Episode 3