Seasons & episodes
S3 · E1Lights! Camera! Danger! 2004-11-27 · 23 min
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.
S3 · E2The N Men 2004-11-27 · 23 min
After a run in with a radiation belt in outer space, Jimmy, Cindy, Carl, Sheen and Libby are all endowed with super powers.
S3 · E3The Tomorrow Boys 2005-05-23 · 23 min
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?
S3 · E4Fundemonium 2005-05-24 · 23 min
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.
S3 · E5Stranded 2005-05-26 · 23 min
A trip gone wrong ends up turning even worse when Jimmy and Cindy get into an argument that winds up getting them stranded together.
S3 · E6Jimmy Goes to College 2005-05-27 · 23 min
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.
S3 · E7Who's Your Mommy? 2005-06-20 · 12 min
On a trip to Planet Schmengy, a strange alien substance attaches itself to Carl's face.
S3 · E8Clash of the Cousins 2005-06-20 · 12 min
The Neutron family has gathered to celebrate Great Aunt Amanda's birthday. When Jimmy's present explodes, everyone suspects him of fowl.
S3 · E9My Big Fat Spy Wedding 2005-07-22 · 23 min
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!
S3 · E10Crouching Jimmy, Hidden Sheen 2005-11-18 · 23 min
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.
S3 · E11The Incredible Shrinking Town 2006-01-23 · 23 min
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.
S3 · E12One of Us 2006-01-24 · 12 min
A new TV show turns everyone in Retroville into mindless and exceedingly cheerful zombies.
S3 · E13Vanishing Act 2006-01-24 · 12 min
To impress Betty Quinlan, Jimmy performs a magic show using a cheap magic kit that's full of his own technological upgrades.
S3 · E14The Trouble with Clones 2006-01-25 · 23 min
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.
S3 · E15The Evil Beneath 2006-01-26 · 12 min
The boys travel to the Bahama Quadrangle to disprove the myth of the disappearances associated with the mysterious site.
S3 · E16Carl Wheezer: Boy Genius 2006-01-26 · 12 min
Carl's pen pal, Elke Elkberg from Sweden, is coming to Retroville to meet him, and Carl is in a panic.
S3 · E17Who Framed Jimmy Neutron? 2006-01-27 · 12 min
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.
S3 · E18Flippy 2006-01-27 · 12 min
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.
S3 · E19How to Sink a Sub 2006-11-17 · 12 min
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.
S3 · E20Lady Sings the News 2006-11-17 · 12 min
The kids become news anchors for a local television network.
S3 · E21King of Mars 2006-11-25 · 23 min
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?
S3 · E22El Magnifico 2006-11-25 · 12 min
Sheen's dad, Mr. Estevez desperately wants to impress his son, so he pretends he is a superhero.
S3 · E23Best in Show 2006-11-25 · 12 min
Goddard is disqualified from the Retroville Pet Show because he is not technically a real dog.