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23 Episodes 2004 - 2006
Episode 1
Thu, Nov 11, 200445 mins
Jimmy returns from an excavation on the Twonkus-3 comet with a small furry creature burrowed in his soil samples that have a rather violent reaction to music.

Episode 2
Sat, Nov 27, 200445 mins
Jimmy and his friends develop superpowers and they decide to use them to help other people, but they end up causing more harm than good. Jimmy tries to tell his friends that they need to train before they can take action, but Cindy and the others refuse to listen to Jimmy. Their latest stunt causes Cindy, Libby, Carl, and Sheen to be arrested by the military. Jimmy tries to find away to help his friends, but he gets frustrated over the lack of progress and he soon learns that his friends will die from their exposure to the belt. Jimmy becomes agitated over Cindy insulting him, he transforms into a giant monster. The next day, the parents are determined to save their children from the military. Jimmy soon causes a rampage in town and his parents try to calm him down, but Sam and the townspeople start to anger Jimmy and he tries to get his revenge on Sam and everyone else for belittling him. On the military base, Cindy and her friends are able to use their powers more carefully, but they are unaware of their fate. Cindy soon notices that Jimmy has turned into a monster because of how she treated him. Cindy and her friends are able to escape the base so they can help Jimmy. During a grueling battle, Carl tries to tell Cindy to apologize to Jimmy but they continue to fight Jimmy. Realizing they are outmatched, Sheen uses the heavy seltzer so that Carl can use his belching to end Jimmy's rampage. However, Cindy and her friends become weak from the fight. Jimmy tries to get his revenge on Cindy, she soon apologizes for everything she has said to him and she tries to admit her feelings to Jimmy, but she ends up succumbing to her fate. Jimmy finally calms himself down and he is reverted back to normal. Jimmy notices his friends are dying and he sees the seltzer bottle on the ground. Jimmy takes his friends back to his lab and he is able to make an antidote for his friends. Jimmy and his friends will only have their powers for about a week.
Episode 3
Sat, Nov 27, 200424 mins
After a run in with a radiation belt in outer space, Jimmy, Cindy, Carl, Sheen and Libby are all endowed with super powers.

Episode 4
Mon, May 23, 200524 mins
Jimmy and the boys use Jimmy's latest invention to travel into the future to discover that the entire town has fallen under the totalitarian rule of Libby.
Episode 5
Tue, May 24, 200524 mins
Hugh loses his job at the car dealership and his family will be moving. Jimmy convinces his father to apply for a job at a toy company. Jimmy secretly upgrades all of his father's toys so that his father can keep his job and win over his investors. But Jimmy gets overworked and tired on upgrading his father's latest toy. Hugh unknowingly places the nano-bots in his newest toy. During the presentation, the nano-bots take over the toy and they cause a rampage in Retroville. Jimmy wakes up and he discovers the nano-bots are gone. Jimmy enlists Carl and Sheen to help him end the nano-bots rampage on Retroville. Jimmy tricks the bots into going potty, causing the toy tank to overload and revert back to normal. Hugh is offered a promotion, but he turns it down and he goes back to his old job at the car dealership. Jimmy is happy that he won't moving and that he can be with his friends.
Episode 6
Thu, May 26, 200524 mins
After a hovercraft accident in the middle of the ocean, Jimmy and Cindy find themselves stranded on a deserted island.
Episode 7
Fri, May 27, 200523 mins
Jimmy is selected to be a student at a prestigious college by Dean Kane, but he learns that college life isn't what it seems for him. Jimmy is treated badly by his classmates and Seymour is secretly sabotaging Jimmy so he can get him expelled. Jimmy soon finds out about Seymour's treachery and he notices that he stole a page from his notebook about molecules. Jimmy enlists Carl and Sheen to help him prove his innocence. Seymour unveils the unstable molecules, but Jimmy and his friends are able to stop the molecules by using glue and metal boards. Dean Kane realizes that Jimmy is innocent and he expels Seymour for stealing Jimmy's idea and for putting the college in danger. Dean Kane offers Jimmy a scholarship, but he declines the offer and he goes back to his school.
Episode 8
Tue, Oct 18, 200524 mins
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.
Episode 9
Mon, Jun 20, 200524 mins
Who's Your Mommy: A mysterious alien gets attached to Carl during one of Jimmy's missions on a planet. Carl starts to develop unhealthy cravings and he acts hormonal. It is soon discovered the alien inside Carl is an alien jellyfish and the mother is looking for her missing child. Carl allows Shmengo to go home with his mother. Later on, Carl and his friends attend Shmengo's birthday party. Clash of the Cousins: Jimmy must attend his great aunt's birthday party with his family, but his aunt and family members aren't thrilled to have Jimmy attending the party because his inventions have caused more harm than good. Jimmy tries to get into his family's good graces by giving them gifts but it doesn't go as planned and Jimmy gets wrongfully blamed for his actions. Jimmy isn't allowed to attend the party and he has his friends interrogate his cousins to see if they are responsible for framing him, but Gomer and Annabelle are clean. It is soon discovered that Jimmy's baby cousin Eddie is responsible for framing him and he is an evil genius. Eddie plants Godard's battery onto his great aunt's cake, but Jimmy arrives to prevent anyone from getting killed. Jimmy is able to prove his innocence by planting an explosive device into Eddie's rattle, causing everyone to realize that Eddie is responsible for framing Jimmy. Eddie gets punished by his parents for the attempted murder on his great aunt and for incriminating Jimmy.
Episode 10
Mon, Jan 23, 200624 mins
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.
Episode 11
Tue, Jan 24, 200624 mins
A new TV show turns everyone in Retroville into mindless and exceedingly cheerful zombies./To impress Betty Quinlin, Jimmy performs a magic show using a cheap magic kit that's full of his own technological upgrades.
Episode 12
Wed, Jan 25, 200623 mins
Evil Jimmy, one of the clones who has evaded Jimmy previously, is back and he is still causing trouble. Jimmy decides to turn his evil clone good so that he can break DaVinci's inventing record. But Evil Jimmy has a far more sinister plan by cloning an evil planet where evil versions of the inhabitants cause mayhem and chaos. Jimmy must figure out a way to stabilize his planet and put a stop to his evil counterpart's plans.

Episode 13
Thu, Jan 26, 200624 mins
Carl's pen pal, Elke Elkberg from Sweden is coming to Retroville to meet him, and Carl is in a panic.The boys travel to the Bahama Quadrangle to disprove the myth of the disappearances associated with the mysterious site.
Episode 14
Fri, Jan 27, 200624 mins
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.
Episode 15
Wed, Jul 27, 200524 mins
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!
Episode 16
Sat, Jun 18, 200546 mins
King Goobot has organized the most diabolical collection of bad guys to ever assemble on one space station. Their mission: Get Jimmy Neutron.
Episode 17
Fri, Nov 17, 200624 mins
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.
Episode 18
Sat, Nov 25, 200624 mins
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?
Episode 19
Sat, Nov 25, 200623 mins
Goddard is disqualified from the Retroville Pet Show because he is not technically a real dog./SheenÂ's dad, Mr. Estevez desperately wants to impress his son. Mr. Estevez has to pretend he is a superhero in order to impress him.

Episode 20
Mon, Jan 16, 2006
Timmy and Jimmy compete with science and magic, attracting the attention of Professior Calamorious.
Episode 21
Fri, Jul 21, 200648 mins
Timmy Turner is magically sent to the secret lab of none other than Jimmy Neutron, the boy with the genius IQ. How will Timmy and Jimmy get back to each others own worlds?
Episode 22
Thu, Nov 11, 2004
Jimmy returns from an excavation on the Twonkus-3 comet with a small furry creature burrowed in his soil samples that have a rather violent reaction to music.
Episode 23
Mon, Jan 16, 2006
Timmy and Jimmy compete with science and magic, attracting the attention of Professior Calamorious.