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Nicktoons: The Dark Ages by Frozarburst
Fandoms: Hazbin Hotel (Cartoon), Helluva Boss (Web Series), Danny Phantom, The Adventures of Jimmy Neutron: Boy Genius, Fairly OddParents, SpongeBob SquarePants (Cartoon), My Life as a Teenage Robot, El Tigre: The Adventures of Manny Rivera, The Loud House (Cartoon), Doom (Video Games), Nicktoons (Video Games)
27 Sep 2025
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The forces of Heaven and Hell have come to blows for territory in the Nicktoons Universe, bringing Spongebob Squarepants, Danny Phantom, Jimmy Neutron, and Timmy Turner into the mix. Separated and corrupted, it's up to the four heroes and their allies to reunite and put an end to the war for reality. But in their adventures, they quickly discover that the conflict runs deeper than they can imagine.
Series
- Part 2 of Nicktoons Adventures
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The Good, The Bad, And The Wealthy by Acaciathorn
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
26 Sep 2025
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Summary
Have you ever wondered what the cast of Jimmy Neutron would be like if they were born and grew up in the mid-1800s? You probably haven't — but I have. So come on, step right up. Feast your eyes upon the JN fandom's only Wild West AU, because there's no fanfiction niche too small for me to fill. [ILLUSTRATED]
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Exhibit Future by BackTo1993, BluePenDragon
Fandoms: Night at the Museum (Movies), Unwind Dystology - Neal Shusterman, Hetalia (Anime & Manga), Encanto (2021), SolarBalls (Web Series), The Adventures of Jimmy Neutron: Boy Genius, 逆転裁判 | Gyakuten Saiban | Ace Attorney, Emperor's New Groove (2000), The Emperor's New School (Cartoon)
24 Sep 2025
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With an end to unwinding and new leadership, a future is now possible for the former AWOLs of the museum. What new possibilities are in store for everyone?
Series
- Part 8 of Exhibit AWOL series
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"New Fly On The Block" - Part 1 by RealSpark17822
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
23 Sep 2025
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Summary
Hello. I'll be continuing this new little series of mine, which I've decided to title the "Sucker Series". This next story will actually be in two parts, as I've decided to split up this particular highlight for Sucker into two parts.
Now for the episode, or rather, story description, as before.
"Sucker takes his first visit to Lindburgh Elementary, meeting humans in much greater numbers."Series
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Nicktoons! Or how the Multiverse got shredded by four kids by 616mcu, HAZZARD_OVERFLOW
Fandoms: Nicktoons (Video Games), Danny Phantom, Fairly OddParents, Invader Zim, El Tigre: The Adventures of Manny Rivera, CatDog (Cartoon), SpongeBob SquarePants (Cartoon), My Life as a Teenage Robot, The Adventures of Jimmy Neutron: Boy Genius
23 Sep 2025
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Summary
We come about the tale of children with big hearts and cosmic power, that will save the universe! ... Or eat burgers, whatever comes first.
TV tropes Page!: https://tvtropes.org/pmwiki/pmwiki.php/Fanfic/NicktoonsOrHowTheMultiverseGotShreddedByFourKids
Series
- Part 10 of Every Spec of Dust Counts
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A Million Dreams Ago by beat_me_with_a_bag_of_coins
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
23 Sep 2025
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Summary
“Yes, Cindy?” James asked with a smirk, not looking away from his reflection.
Her face seared with anger. “I thought I told you not to call me that, Neutron,” Cynthia spat with a glare, crossing her arms. Her forest green sequin-adorned dress glimmered in the low light of the break room.
“Come to tell me that you wish I had an aneurysm again?” he chuckled, combing his hair rhythmically and repetitively to get the chocolate brown swirl just right. “Hate to break it to ya, but I think I've heard that line before.”
*•°•*
Set in the mid 1960s, James Neutron is a lonely lounge singer with a dream to be the next Einstein and the ability to store his entire life savings in his front pocket. Oftentimes, he's competing with the other vocalists like Liberty Folfax and Cynthia Vortex for the spotlight. They have the voices of songbirds. Him? He's no Bobby Darin or Frank Sinatra, but it puts bread on the table.
Series
- Part 2 of Jimmy Neutron AU Jamboree
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My Unite Academia by Khvanitas003
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Nicktoons (Video Games), The Adventures of Jimmy Neutron: Boy Genius, Danny Phantom, Fairly OddParents, SpongeBob SquarePants (Cartoon)
22 Sep 2025
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Due to a failed escape attempt by the Nicktoons during a mission in Japan, two of the Nicktoons end up captured by the heroes. The sentence? Enroll in UA and find a legal path to heroism. But are the Nicktoons' ways truly wrong, or is it that the circumstances are different for everyone?
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Bigmouth Strikes Again! by rockstarmoron for katia_dreamer
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
21 Sep 2025
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A series of one-shots about Retroville's star-crossed bigmouths, Jimmy Neutron and Cindy Vortex. Banter, rivalry, and angsty pining galore! With a bit of fluff thrown in for good measure.
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5 Times Skyler Kicked Ass for Her Team + 1 Time they Kicked Ass for Her by sk3tch3s_and_fanfics
Fandoms: Batman - All Media Types, Spider-Man: Spider-Verse (Sony Animated Movies), Nicktoons (Video Games), The Owl House (Cartoon), Marvel Cinematic Universe, The Adventures of Jimmy Neutron: Boy Genius, Danny Phantom, Fairly OddParents, SpongeBob Squarepants (only brief mention), Kim Possible (Cartoon), Dexter's Laboratory, Power Puff Girls, Codename: Kids Next Door, more fandoms to be added probably - Fandom
20 Sep 2025
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Skyler wouldn’t say she’s the most irritable person. Sure, she could get frustrated, but she’d still be able to talk it out if the other party stayed civil. She may not start fights, but she sure as hell knows how to finish them. Except when it comes to literally anybody she cares about. The second anyone she’s close to, be it a sibling or a close friend (or Alfred ) is on the line is the moment where she loses her shit. And yes, she does in fact start some fights. These are just 5 instances where it’s happened. (plus a bonus time of many where all of the CHAOS operatives do the same for her)
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Emails I Can, Should, and Must Send by messofthejess for rockstarmoron
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
20 Sep 2025
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Summary
Jimmy and Cindy are geographically separated for the summer. Do you really think that's going to stop them from talking?
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Nicktoons: The Phantom Genie Saga by NickFan108
Fandoms: The Adventures of Jimmy Neutron: Boy Genius, Fairly OddParents, Danny Phantom, SpongeBob SquarePants (Cartoon), Nicktoons (Video Games), Avatar: The Last Airbender (Cartoon 2005), Rugrats & All Grown Up! (Cartoons), Star Trek: The Original Series, Blue's Clues, Kung Fu Panda (Movies), Hey Arnold!, Phineas and Ferb, Teen Titans (Animated Series), Spider-Man: The Animated Series (Cartoon 1994)
18 Sep 2025
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Sometime after the defeat of the Evil Syndicate, Dark Danny breaks out of the Ghost Zone and forms an alliance with Norm the Genie in an attempt to get revenge on Danny. But when their machinations threaten the stability of all existence, the Nicktoons must unite once again as they scour the multiverse for the means to help them. And maybe make some new friends along the way...
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Becoming isekai villain's in a Nicktoons hero world by D_rissing, nightmaster000
Fandoms: Power Rangers, Mighty Morphin Power Rangers, ThunderCats (2011), My Life as a Teenage Robot, The Loud House (Cartoon), El Tigre: The Adventures of Manny Rivera, Fairly OddParents, Rocket Power (TV), The Adventures of Jimmy Neutron: Boy Genius, Danny Phantom, Power Rangers Lost Galaxy, Avatar: The Last Airbender, Avatar: Legend of Korra, Tak (Video Games)
18 Sep 2025
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Summary
If you awoke one day as a villain in a world of superheroes what would you do? Well for two fans of the old and new Nickelodeon cartoons that question will become a reality as they awake in a new world as its new two biggest threats
Series
- Part 3 of Isekai Inserts
- Part 12 of Mixing up ideas
- Part 17 of D_rissing and nightmaster000 collabs
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The Adventures of Jimmy Neutron, Boy Genius: Quantum Chaos by NickFan108
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
18 Sep 2025
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Summary
In my head-canon finale for the series, Jimmy's life is finally starting to fall into place. From "Stranded" to "Jimmy Timmy Power Hour 3: The Jerkinators", Jimmy and Cindy are close to becoming an official couple. And since there hasn't been a major incident in weeks, Jimmy decides it's time to try his most dangerous experiment yet: quantum realities. All rights go to Nickelodeon.
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Party at a Rich Dude’s House (2025) by lexaleigh
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
17 Sep 2025
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Inspired by the song “Party at a Rich Dude’s House” by Kesha.
Eustace Strych is throwing a party. Jimmy and friends crash it. Drama and hilarity ensue. -
Drafts, Cringe, and More by WritingEd
Fandoms: Overwatch (Video Game), Inside Out (Pixar Movies), Taylor Swift (Musician), Lobotomy Corporation (Video Game), Limbus Company (Video Game), Miraculous Ladybug, Mickey Mouse Clubhouse (Cartoon 2006), Dwayne Johnson "Got Milk?" Commercial, The Adventures of Jimmy Neutron: Boy Genius
16 Sep 2025
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Lot'sa drafts from various things I was either interested in or decided to type furiosly about. Please note, some of these will never get finished at all, and some might. Also, why is everything based off some crappy cartoon?
- Language:
- English
- Words:
- 54,036
- Chapters:
- 11/?
- Hits:
- 200
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Nicktoons Re-Unite! (Season 1) by s10127470
Fandoms: Nicktoons (Video Games), SpongeBob SquarePants (Cartoon), The Adventures of Jimmy Neutron: Boy Genius, Fairly OddParents, Danny Phantom, My Life as a Teenage Robot, Avatar: The Last Airbender, El Tigre: The Adventures of Manny Rivera, Tak and The Power of Juju, Rugrats & All Grown Up! (Cartoons), Rocket Power (TV), Hey Arnold!, Invader Zim, The Wild Thornberrys, Other Nicktoons and Viacom-Related Shows and Projects
13 Sep 2025
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Follow the continuing adventures of The Nicktoons as they learn more about each other's worlds and face on threats old and new!
Series
- Part 3 of Nicktoons Re-Unite!
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Summer Stars by Stujet9rainshine
Fandoms: Nicktoons (Video Games), The Adventures of Jimmy Neutron: Boy Genius, Fairly OddParents
13 Sep 2025
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Summary
A summer away from home. Spent in the wonderful and accepting Camp Nueva Luna and its wonderful staff.
This is how Jimmy Neutron meets Timmy Turner.
And how it became the best summer ever.
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It All Comes Back to You by messofthejess for rockstarmoron
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
10 Sep 2025
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Summary
After finishing her Master's degree, Cindy finds herself at a bit of a loss for what to do next in her life. Returning to Retroville after so long isn't ideal, but at least it's a step forward.
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Blasting Off: A Ménage a Trois by Teacupsnmints
Fandoms: The Adventures of Jimmy Neutron: Boy Genius
09 Sep 2025
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Summary
Jimmy takes his frustrations with Cindy out on his childhood friends.
- Language:
- English
- Words:
- 1,118
- Chapters:
- 1/1
- Hits:
- 13
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THE spirk fanfic by Verzpath
Fandoms: Star Trek: The Next Generation, Harry Potter - J. K. Rowling, Diary of a Wimpy Kid (Movies 2010-2017), Falsettos - Lapine/Finn (Broadway Cast) RPF, Sherlock (TV), Sherlock & Co. (Podcast), The Legend of Zelda & Related Fandoms, Marvel Cinematic Universe, The Adventures of Jimmy Neutron: Boy Genius, Supernatural (TV 2005), SpongeBob SquarePants (Cartoon), The Simpsons, Les Misérables - All Media Types, South Park, Gnomeo and Juliet (2011), Wicked - All Media Types, Star Trek: Alternate Original Series (Movies)
09 Sep 2025
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Summary
Harry Potter arrives on the enterprise