The Adventures of Jimmy Neutron: Boy Genius/Characters

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James "Jimmy" Isaac Neutron

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  • Adorkable
  • Anime Hair: Lampshaded consistently.
  • Berserk Button: Do not, I repeat, do NOT give Jimmy an F. Denzel Crocker in the Jimmy Timmy Power Hour learns this the hard way.
  • Big Damn Heroes: ALL THE TIME. Often Lampshaded, in fact.
  • Big No: In The Tomorrow Boys, after learning he gets married to Cindy. In a bit of Leaning on the Fourth Wall, the scream cuts to a commercial. When the show comes back on, Sheen comments that he had been screaming for four minutes straight.
  • Catch Phrase: Originally "Gotta blast!" "Think, think, THINK!" and "Brain blast!". The show eased off on these as it went on, eventually getting rid of them entirely. (One exception is "And now, my latest invention, the (insert plot-related-device here!)", which stayed for most of the series' run.)
  • Comic Trio (he's the straight man)
  • Crazy Prepared: His watch, whose powers depend mainly on the plot. Can include lasers, freeze rays, magno-rays, GPS, tracking name it, there's probably a gadget for it tucked away in there.
  • Designated Hero: Causes many of the problems he has to fix.
  • Future Loser: In the 'bad future' of The Tomorrow Boys, Future!Jimmy is a slack-jawed loser, wanted by the evil dictator Libby, with a five-o'clock shadow and Cindy as a wife. Current!Jimmy is less than impressed.
  • Gadgeteer Genius
  • "Hell Yes!" Moment: Often. Especially when he's given up all hope...and then his friends forgive him for being arrogant/apologise for being stupid/come back to save him.
  • Insufferable Genius: At times, but often more pronounced when Cindy's around.
  • Kid Hero
  • Little Professor Dialogue: Justified partially in that he does actually have an IQ of 210.
  • Ridiculously Successful Future Self: In the 'good future' of The Tomorrow Boys, Jimmy is the first person to ever win the Nobel Prize in bulk.
  • Science Hero
  • Sesquipedalian Loquaciousness: A frequent user and abuser.
  • She Cleans Up Nicely: A rare male example. When Jimmy shows up in a tux for Jet Fusion's wedding to Beautiful Gorgeous in My Big Fat Spy Wedding, Cindy promptly gets little hearts in her eyes. (Literally!)

Cindy: "So Neutron's the best man? Yeah, more like the best NERD! I bet he'll look like a total..." (Jimmy shows up outside the church in a tux. Cue fade to pink background, eye-hearts and hair patting) "...HUNKMUFFIN."

    • Another example is during Love Potion #976-J, when Jimmy cleans up for his date with Cindy. Said almost word-for-word by Cindy.
  • Slap Slap Kiss: With Cindy. All the time.
  • The Smart Guy: Duh.
  • TV Genius: Oh, so much.

Carlton "Carl" Ulysses Wheezer

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Sheen Juarrera Estevez

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Cynthia "Cindy" Aurora Vortex

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Liberty "Libby" Danielle Folfax

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Hubert "Hugh" Beaumont Neutron

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Jimmy: "Aw, but Dad! All my friends are going!"
Hugh: "Now, son, if all your friends were named Cliff, would you jump off them?"


Judith "Judy" Neutron

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  • Closer to Earth
  • Genius Ditz: Not ditz per se (she's certainly the intelligent one in her marriage with Hugh and more rational than he is) but she has her moments of ditziness. There are also numerous moments where she demonstrates it's definitely from her side of the gene pool that Jimmy gained his intellect.
  • Mama Bear

Nick Dean

  • All Girls Want Bad Boys
  • Paper Tiger: He's the ultimate cool dude, the girls all dig him, and he's supposed to be tough. In the movie his part of the plan is to take care of the Big Bad while the others rescue their parents. One look at his competition, though, and he goes screaming like a little girl.
  • Screams Like a Little Girl: Despite being normally cool, he screams like a little girl.