23 episodesFirst aired 27 November 2004
E1Nov 200424m
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.
E2Nov 200424m
After a run in with a radiation belt in outer space, Jimmy, Cindy, Carl, Sheen and Libby are all endowed with super powers.
E3May 200524m
Jimmy, Sheen, and Carl travel 15 years into the future, only to find that some things have gone wrong. Can they right the past to save their future?
E4May 200524m
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.
E5May 200524m
A trip gone wrong ends up turning even worse when Jimmy and Cindy get into an argument that winds up getting them stranded together.
E6May 200524m
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.
E7Jun 200512m
On a trip to Planet Schmengy, a strange alien substance attaches itself to Carl's face.
E8Jun 200512m
The Neutron family has gathered to celebrate Great Aunt Amanda's birthday. When Jimmy's present explodes, everyone suspects him of fowl.
E9Jul 200524m
Jimmy's new mission from the BTSO is to follow Beautiful Gorgeous. He takes the job and he discovers that she and Jet Fusion are getting married!
E10Nov 200524m
In Retroville, Sheen is just an average hyperactive kid. But in Shangri Llama, he is known as The Chosen One, or One Who Puts Foot Behind Head.
E11Jan 200624m
When the entire population of Retroville is accidentally hit by Jimmy's shrink ray, the Space Bandits abduct everyone with the nefarious plan of marketing and selling them throughout the galaxy as living dolls.
E12Jan 200612m
A new TV show turns everyone in Retroville into mindless and exceedingly cheerful zombies.
E13Jan 200612m
To impress Betty Quinlan, Jimmy performs a magic show using a cheap magic kit that's full of his own technological upgrades.
E14Jan 200624m
The evil Jimmy clone is back, and he's reconfigured the cloning device to make an evil clone of the Earth with an alarming side effect – the real Earth is starting to disappear.
E15Jan 200612m
The boys travel to the Bahama Quadrangle to disprove the myth of the disappearances associated with the mysterious site.
E16Jan 200612m
Carl's pen pal, Elke Elkberg from Sweden, is coming to Retroville to meet him, and Carl is in a panic.
E17Jan 200612m
Jimmy is framed for a break in at the Retroville Bank. When Carl and Sheen attempt to free him from his incarceration, the three boys end up on a chain gang together.
E18Jan 200612m
Jimmy places a funny chip into Hugh's new Flippy puppet when he insists on using it for Career Day at school. But Jimmy soon learns that Flippy is stealing his dad's mind and has to save him before Flippy disposes of him.
E19Nov 200612m
When Jimmy hides a time displacement device in the teachers' transportation to the annual education convention, the entire faculty of Lindberg Elementary is sent into temporary time limbo.
E20Nov 200612m
The kids become news anchors for a local television network.
E21Nov 200624m
Eustace Strych is back, and he's still determined to humiliatingly defeat Jimmy. Now the race to find an energy source on Mars is on! Who will win?
E22Nov 200612m
Sheen's dad, Mr. Estevez desperately wants to impress his son, so he pretends he is a superhero.
E23Nov 200612m
Goddard is disqualified from the Retroville Pet Show because he is not technically a real dog.