The WORST episodes of The Adventures of Jimmy Neutron: Boy Genius

Every episode of The Adventures of Jimmy Neutron: Boy Genius ever, ranked from worst to best by thousands of votes from fans of the show. The worst episodes of The Adventures of Jimmy Neutron: Boy Genius!

Follows Jimmy Neutron, his faithful robotic dog, Goddard, and his eclectic friends and family as they experience life in Retroville. Jimmy is a typical kid, who just happens to be a genius. He creates gadgets to improve his everyday life, but his inventions go awry more often than not, and hilarious trouble ensues.

Last Updated: 9/23/2024Network: NickelodeonStatus: Ended
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The Big Pinch
star
4.47
45 votes

#1 - The Big Pinch

Season 1 - Episode 5 - Aired 9/13/2002

Jimmy brings Thomas Edison to the present using his Time Pincher. But the future of western civilization is threatened when Edison falls in love with Miss Fowl and refuses to return to his own time!

Directors: Keith Alcorn
Writer: Jed Spingarn
Watch Now:AmazonApple TV
Granny Baby
star
4.57
42 votes

#2 - Granny Baby

Season 1 - Episode 6 - Aired 9/20/2002

Jimmy's Granny comes to stay while Judy and Hugh are off on a third honeymoon. Jimmy, concerned by her ailing health, gives her his new youth tonic. However, the potion works too well - Granny ends up as a talking baby!

Directors: Keith Alcorn
Watch Now:AmazonApple TV
The Evil Beneath
star
5.10
10 votes

#3 - The Evil Beneath

Season 3 - Episode 15 - Aired 1/26/2006

Jimmy travels to the Bahama Quadrangle (a parody of Bermuda Triangle) to solve the mysterious disappearances surrounding it.

Watch Now:AmazonApple TV
Clash of the Cousins
star
5.67
12 votes

#4 - Clash of the Cousins

Season 3 - Episode 8 - Aired 6/20/2005

The Neutron family has gathered to celebrate Aunt Maybelline's birthday. When Jimmy's present explodes, everyone suspects him of foul play.

Watch Now:AmazonApple TV
See Jimmy Run
star
5.73
15 votes

#5 - See Jimmy Run

Season 1 - Episode 12 - Aired 10/14/2002

After a humiliating defeat by Cindy in the school relay race, Jimmy improves his shoes so he can run at the speed of light! Unfortunately, he gets stuck in this super-fast mode. Unless he finds a way to slow down, he will disappear – for good.

Directors: Keith Alcorn
Watch Now:AmazonApple TV
Battle of the Bands
star
5.77
13 votes

#6 - Battle of the Bands

Season 1 - Episode 11 - Aired 10/4/2002

Jimmy, Carl, and Sheen form a band for the Talent Contest. Instead of focusing on their music, however, they focus on becoming rock stars - threatening their performance and friendship.

Directors: Keith Alcorn
Watch Now:AmazonApple TV
My Son, the Hamster
star
5.82
11 votes

#7 - My Son, the Hamster

Season 1 - Episode 15 - Aired 10/30/2002

A teleporting accident leads to Jimmy switching bodies with Carl's hamster, Mr. Wuggles.

Directors: Mike Gasaway
Writer: Gene Grillo
Watch Now:AmazonApple TV
The Feud
star
5.82
11 votes

#8 - The Feud

Season 2 - Episode 14 - Aired 3/10/2004

Jimmy and Carl's dads are fighting and forbid their sons from speaking to one another, so Jimmy and Carl must find a way to end the feud and save their friendship. Inventions: Holographic Star Toad (game), flashlight-like laser, Chloro-Plastic Crabgrass (Perpetual Motion Gyro-Top and Non-Sucking Hydraulic Loopy Straw).

Writer: Gene Grillo
Watch Now:AmazonApple TV
Foul Bull
star
5.86
7 votes

#9 - Foul Bull

Season 2 - Episode 17 - Aired 3/26/2004

During a class trip to a rodeo, Jimmy, Carl and Sheen fall for a cute cowgirl, Sally. To prove themselves worthy of Sally's heart, each of the boys set out to master a specific rodeo talent. Sheen turns himself into a rodeo clown, and Carl wrestles a pig, but it's Jimmy who comes out the victor with his impressive bull riding – and fool proof robotic bull, of course. Once the bull malfunctions however, the boys need the help of a real cowboy to save the day. That cowboy, or cowgirl, turns out to be none other than Miss Fowl. Invention: Hyper-dimensional Super-controlling Electro-Magnet, Bullinator 8000

Watch Now:AmazonApple TV
Raise The Oozy Scab
star
5.92
13 votes

#10 - Raise The Oozy Scab

Season 1 - Episode 8 - Aired 9/27/2002

Jimmy, Cindy, Carl, and Sheen take to the seas in search of treasure for their oceanography project.

Directors: Keith Alcorn
Writer: Jed Spingarn
Watch Now:AmazonApple TV
Carl Wheezer, Boy Genius
star
6.00
10 votes

#11 - Carl Wheezer, Boy Genius

Season 3 - Episode 16 - Aired 1/26/2006

Carl wants to impress a girl by making Jimmy seem stupid in comparison to him.

Watch Now:AmazonApple TV
King of Mars
star
6.00
7 votes

#12 - King of Mars

Season 3 - Episode 21 - Aired 11/25/2006

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?

Watch Now:AmazonApple TV
The Science Fair Affair
star
6.00
8 votes

#13 - The Science Fair Affair

Season 2 - Episode 18 - Aired 3/26/2004

Cindy leads a campaign to ban Jimmy from the school's science fair, citing unfair competition. But even an ousted Jimmy steals the spotlight when his patented oil-generating machine earns him a Nobel Prize for Science – then malfunctions and places everyone at the science fair in grave danger. Invention: The I Can't Believe It's Not Oil 8000

Watch Now:Amazon
The Great Egg Heist
star
6.00
7 votes

#14 - The Great Egg Heist

Season 2 - Episode 13 - Aired 3/10/2004

Jimmy helps Princess Guan Qi "Peggy" Tsu by retrieving the Egg-Drop Jade from the Retroville Museum before it is stolen by her evil brother. Invention: Null Generator

Writer: Gene Grillo
Watch Now:AmazonApple TV
Hypno-Birthday to You!
star
6.00
14 votes

#15 - Hypno-Birthday to You!

Season 1 - Episode 17 - Aired 11/1/2002

Jimmy wants that new chemistry set in the worst way. But rather than wait for his birthday to come around, he hypnotizes his parents to think that tomorrow is his birthday. This plan works well - too well. Hugh and Judy think that every tomorrow is Jimmy's birthday, and our boy genius finds himself in trouble once again.

Watch Now:Amazon
Jimmy On Ice
star
6.08
13 votes

#16 - Jimmy On Ice

Season 1 - Episode 10 - Aired 10/4/2002

On an incredibly hot summer day, Jimmy tries to do Retroville a favor by blocking out the sun with quantumly enhanced sun block. But, as usual, things don't quite turn out the way the boy genius planned.

Writer: Gene Grillo
Watch Now:AmazonApple TV
Flippy
star
6.10
10 votes

#17 - Flippy

Season 3 - Episode 18 - Aired 1/27/2006

Hugh wants to become a ventriloquist, so Jimmy decides to give him a hand. But his modifications may cause a big problem for his father....

Watch Now:AmazonApple TV
Professor Calamitous, I Presume
star
6.11
35 votes

#18 - Professor Calamitous, I Presume

Season 1 - Episode 27 - Aired 3/14/2003

The bad Professor Finbarr Calamitous, who can never finish anything, plots to take over Retroville, with some help from its resident boy genius. Invention: Swiss Army Laser.

Directors: Mike Gasaway
Writer: Steven Banks
Watch Now:Amazon
Substitute Creature
star
6.14
37 votes

#19 - Substitute Creature

Season 1 - Episode 19 - Aired 11/15/2002

During Botany class, Miss Fowl accidentally swallows a seed from Jimmy's DNA-accelerated spinach plant. This has the unforeseen consequence of turning her into a 50-foot plant creature that threatens the citizens of Retroville. Inventions: ElectroMagnetic Radiation Multiplier, Hieroglyphics Translator, DNA Accelerator, Toaster Window Washer, Toaster Newspaper Deliverer, Toaster Make-Up Applier.

Directors: Mike Gasaway
Watch Now:Amazon
The Mighty Wheezers
star
6.14
37 votes

#20 - The Mighty Wheezers

Season 2 - Episode 20 - Aired 6/7/2004

The Mighty Wheezers When his parents go to the desert for a camp-out, Jimmy spends the weekend with the Wheezers. The aches, pains, and insane precautions the Wheezers take to protect their health, however, soon get to Jimmy. Thus, the boy genius sneaks back to his lab and creates health boost pills for the Wheezers. The pills work a little too well, though, and the Wheezers end up with almost super-human abilities! But the effects are only temporary, and they could wear off at any time.... Invention: total health-boost pills.

Writer: Gene Grillo
Watch Now:Amazon
Trading Faces
star
6.14
14 votes

#21 - Trading Faces

Season 1 - Episode 13 - Aired 10/14/2002

While Jimmy is using his mind-reading device on Cindy, their personalities are accidentally switched. Jimmy (in Cindy's body) and Cindy (in Jimmy's body) take advantage of this mistake, embarrassing each other to no end.

Directors: Mike Gasaway
Watch Now:AmazonApple TV
Send in the Clones
star
6.14
7 votes

#22 - Send in the Clones

Season 2 - Episode 12 - Aired 3/9/2004

When Jimmy's chores get in the way of him enjoying rare ice crystals from outer space, he hurriedly creates clones of himself. These clones, however, represent different parts of Jimmy's personality. What will happen when the clones are let loose in Retroville? Inventions: The six clones from Jimmy's Telepods - Positive Jimmy, Negative Jimmy, Romantic Jimmy, Funny Jimmy, Macho Jimmy, and Evil Jimmy

Watch Now:AmazonApple TV
Broadcast Blues
star
6.17
36 votes

#23 - Broadcast Blues

Season 1 - Episode 26 - Aired 3/14/2003

Broadcast 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). Inventions: Gravitrax SK30, AccoustaVac.

Directors: Mike Gasaway
Writer: Gene Grillo
Watch Now:Amazon
The Junkman Cometh
star
6.17
36 votes

#24 - The Junkman Cometh

Season 2 - Episode 16 - Aired 3/12/2004

Jimmy, Sheen and Carl travel to the Moon to help Jimmy's robotic brother Brobot rescue his parents from The Junkman, an evil space scoundrel.

Writer: Steven Banks
Watch Now:AmazonApple TV
I Dream of Jimmy
star
6.20
15 votes

#25 - I Dream of Jimmy

Season 1 - Episode 9 - Aired 9/27/2002

Carl's sleeping problems are hindering Jimmy's scientific research, so Jimmy goes into Carl's dream to see what the problem is.

Directors: Keith Alcorn
Watch Now:AmazonApple TV