Mark DeCarlo as Hugh Neutron (voice)
Episodes 43
When Pants Attack
Since Jimmy's a scientist, he has more important things to do than pick up his pants - like invent a device that'll do that chore for him. But when the nanochip develops advanced brainial capacity, Jimmy's pants lead an attack on the city of Retroville!
Read MoreBirth of a Salesman
Miss Fowl's class has a candy-selling contest, with the grand prize being a trip to Retroland! To beat Cindy in the contest, Jimmy invents a robot programmed to sell candy no matter what.
Read MoreGranny Baby
Jimmy's Granny comes to visit and he gives her his new youth tonic potion.
Read MoreI Dream of Jimmy
Jimmy invents the Dream Injector 5000 and enters Carl's dream to figure out what he is afraid of.
Read MoreJimmy On Ice
Jimmy's attempt to cool off the summer heat wave results in a new Ice Age.
Read MoreBattle of the Band
Jimmy, Carl and Sheen form a band in order to beat out Cindy and Libby for the talent contest first prize.
Read MoreSee Jimmy Run
To get revenge on Cindy for winning a race, Jimmy adapts his running shoes so he can move at lightning speed.
Read MoreThe Phantom of Retroland
Jimmy tries to disprove Nick's scary tale about the Phantom of Retroland.
Read MoreHall Monster
When the old tyrant of a hall monster leaves, Jimmy is picked as his replacement.
Read MoreHypno-Birthday to You!
In order to get his new chemistry set right away, Jimmy hypnotizes his parents.
Read MoreKrunch Time
Jimmy comes up with a snack that is even tastier than everyone's favorite.
Read MoreSafety First
Jimmy creates an electronic bodyguard to protect him from a bully.
Read MoreCrime Sheen Investigation
Sheen's oldest and most prized UltraLord is missing! It's up to Jimmy, playing a high-tech Sherlock Holmes, to find it.
Read MoreJourney to the Center of Carl
Jimmy creates a "get out of school sick" patch.
Read MoreAaughh!! Wilderness!!
Hugh takes Jimmy, Sheen, and Carl on a camping trip into the wilderness, allowing no technology whatsoever. So what will save them when a big problem comes along?
Read MoreParty at Neutron's
Sheen and Carl convince Jimmy to throw a party when his parents go out to watch Ducks. But when Hugh and Judy come home early, how can Jimmy convince his guests to leave?
Read MoreBroadcast Blues
Jimmy lands the spot of host on Lindbergh Elementary's Public Access show! When the show fails miserably, Cindy and Libby are brought in as producer and co-star, changing informative Science With Jimmy to flashy Funky Jam Dance Party (with some science).
Read MoreProfessor Calamitous, I Presume
The mad Professor Finbarr Calamitous schemes to make Jimmy his "scientific slave."
Read MoreSleepless in Retroville
Jimmy is hosting a sleepover with Carl and Sheen! To make it the best slumber party in history, Jimmy invents a machine to make perfect pillows for pillow fights, create made-to-order pizzas, and tell scream-your-head-off scary stories. But what happens if the invention is overloaded and the programs mix up?
Read MoreA Beautiful Mine
Jimmy, Carl, Sheen, Cindy, Libby, and Goddard blast off into space in Jimmy's newly invented spaceship to mine for aster-rubies while fighting off space bandits and their own greed.
Read MoreThe Retroville 9
Jimmy's determination to captain a winning baseball team leads him to rev up the equipment with Neutronic technology.
Read MoreMonster Hunt
Jimmy, Sheen, Carl and Captain Betty set out on a mission to capture the lake monster that has haunted Lake Retroville for at least six months.
Read MoreJimmy For President
Jimmy runs for class president against Sheen, Libby and Bolbi - the new kid.
Read MoreReturn of the Nanobots
Jimmy attempts to update the mischievous Nanobots in order to correct errors in his homework, but the Nanobots take it upon themselves to correct everything - even the human race!
Read MoreHolly Jolly Jimmy
Jimmy is convinced that Santa Claus does not exist. To prove his theory, he travels to the North Pole where he discovers a remote toy factory.
Read MoreLove Potion #976/J
A laboratory mishap exposes Jimmy, Carl and Sheen to a powerful pheromone that causes each of them to fall madly in love with the next female they see.
Read MoreMaternoTron Knows Best
While Judy Neutron takes a spa vacation, Jimmy invents The Maternotron 6000 to take care of the house.
Read MoreOut, Darn Spotlight
Jimmy is desperate to get the starring role opposite dream girl Betty Quinlan in the school musical, "Macbeth in Space." But the only part he can land is the FX master backstage.
Read MoreThe Science Fair Affair
Cindy Vortex leads a campaign to ban Jimmy from the school's science fair.
Read MoreThe Jimmy Timmy Power Hour
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 other's own worlds?
Read MoreMen At Work
Carl, Sheen, and Jimmy take jobs at a local burger joint. Jimmy transforms it to a fully automated restaurant that aims to please the customers and destroy the competition.
Read MoreThe Mighty Wheezers
Jimmy designs a temporary remedy at the Wheezers' house so he and Carl can have fun.
Read MoreBillion Dollar Boy
Jimmy and company are invited to the home of a spoiled boy billionaire - who wants Jimmy's dog.
Read MoreLights! Camera! Danger!
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.
Read MoreFundemonium
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.
Read MoreJimmy Goes to College
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.
Read MoreWho's Your Mommy?
On a trip to Planet Schmengy, a strange alien substance attaches itself to Carl's face.
Read MoreThe Incredible Shrinking Town
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.
Read MoreWho Framed Jimmy Neutron?
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.
Read MoreJimmy Timmy Power Hour 3 - The Jerkinators!
Jimmy and Timmy are at it again: bickering over the affections of Cindy, but somehow end up fighting off enemies together!
Read MoreHow to Sink a Sub
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.
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