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- "Gotta blast!"
- ―Jimmy's catchphrase.
James "Jimmy" Isaac Neutron (born March 03) is the main protagonist of the Jimmy Neutron franchise.
Jimmy is a genius inventor, but his inventions seem to cause more destruction than anything good and it is usually up to him and his friends to stop them. He lives in Retroville with his robot dog, Goddard and his parents Hugh and Judy Neutron. He is the leader of Team Neutron. His team of Nicktoons consists of himself, Timmy Turner, SpongeBob SquarePants, Danny Phantom, Avatar Aang, Tak and Invader Zim.
AppearanceJimmy has a large forehead (which appears to be larger, due to his hair), blue eyes, and a large brown cowlick hairstyle. He is often teased because he is shorter than most boys of his age, though sometimes, he's the same height as some of his friends.
Jimmy's wardrobe consists almost exclusively of red T-shirts that sport his trademark symbol of electrons, circling a nucleus. He also wears blue jeans and a pair of grey and white Converse Chuck Taylor All-Stars. His underwear consists of plaid boxer shorts, as shown in the film and in the first episode of the series, he wears knee socks. In the shorts and the film, Jimmy wore blue shorts and brown shoes. He also wears his blue lab coat (and sometimes his welding mask while working on his inventions).
In the pilot, he wore a striped shirt, brown shoes and blue shorts.
Jimmy has an impossible I.Q. of 210, making him the smartest Retroville citizen, possibly the smartest individual in the entire universe he inhabits. He is a complex character. He specializes in many sciences such as quantum physics, chemistry, biology, mathematics, robotics, engineering and astronomy. In a number of episodes, his classmates are annoyed and angered because Jimmy's brilliance renders trying to win science projects and competitions things pointless. In fact, Jimmy has been banned for life from the science fair to give normal kids an actual chance. This brain, a source of constant comment, allows him to invent devices that accomplish even the impossible. That might seem like a gift to most people, but to Jimmy, it often causes him trouble. He is best friends with Carl, Sheen, Nick and Goddard and they usually hang out together.
He designs his wild inventions to help him deal with bothersome chores and gets very curious when there's something unusual happening, however the inventions tend to have a flaw (usually caused by an obvious oversight) and his curiosity can take over him, which result in a catastrophe which only he can solve. He's rarely ever thanked however as people usually know the problem was his fault in the first place and is usually bullied by the citizens of Retorville as well, sometimes he's even bullied by his friends. He is also shown to be hated by his own relatives as seen in Clash of the Cousins.
In the moment of crisis, he will urge his brain by saying, "Think, think, think!", where upon viewer enters Jimmy's ear and goes into his brain to observe its inner workings as well, as to relive a scene from the early part of the episode. Jimmy will then shout, "Brain Blast!", and arrive at the solution for whatever danger he has landed himself, his friends, or his town in. In the movie, he does not say "Think, think, think!" or "Brain Blast!" out loud, but says them in his mind. In the third season, he seems to stop brain blasting and comes up with ideas right away, with the exception being "Fundemonium".
Jimmy is a nice guy, although sometimes he can be arrogant, selfish, irresponsible and a know-it-all. Jimmy is shown to be quite irritable and impatient around most people, mostly his friends and sometimes treats them like underlings. He can be friendly, but can come off as a smart-aleck or a nerd occasionally and unsympathetic to people's feelings. Jimmy is also shown to be lazy in several episodes and relies on his inventions to do even the simplest things for him, which causes trouble for him and everyone around him. Jimmy also almost never learns from his mistakes and usually doesn't listen to his friends when they try to warn him about something in his plans. He enjoys being a hero, often taking a staunch stand against anyone he believes to be evil. He won't back down from his beliefs as he strongly believes in himself.
Jimmy is quite charming when he least tries to be, such as at the party that he lets Sheen throw in his parents' absence in an early episode. He cares deeply for his friends, parents and Goddard. It shows that Jimmy's intelligence is not inherited from the father, but he took it from his mother, conversely from his father Hugh, who is a duck-obsessed adult.
In a few episodes, Jimmy is shown to be somewhat gullible and throughout the series, he loses his common sense and doesn't think his inventions and plans through. Despite all this, he nearly never learns from his mistakes and refuses to acknowledge them.
Sometimes though, it is hinted that Jimmy may, deep down, be insecure about being super smart, as he is constantly bullied because of it and that he causes problems for everyone, indicated by his statements in Normal Boy. He is also shown to be insecure about his small stature and loses his temper when he's mocked or reminded of it. He is also hinted to be lonely a few times.
There are times when Jimmy actually shows signs of humility and actually takes responsibility for his actions. A perfect example would be in the movie, when he realizes that the parents getting abducted was his fault and his friends get angry and bitter towards him. In his own seperate cell, Jimmy starts crying, not just out of remorse, but out of his own insecurities. After the day is saved, Jimmy apologizes to his parents and tells them he loves them.
In the pilot, the shorts, the movie and early episodes, he was naive, mischievous, rambunctious, childlike, nerdy, and spoiled. Plus, his voice was a bit more high pitched and scratchy. However, since then he has become more of a leader, a bit irritable, a know-it-all, arrogant, and his voice is more deep and clear.
However, he does have a few weaknesses; one of them is his poor communication skills. It takes him hours to explain things the "Science way" and people find his explanations very complicated and would ask for a shorter version of his story instead, leading some to believe he might have a mild form of Asperger's Syndrome. Cindy calls him silver-tongued (in a sarcastic way) in his lab, in the episode "Love Potion 976/J" after he improves its interior appearance, which is accessible to him only, by means of a DNA scan from his hair.
In the episode, Lights! Camera! Danger!, Jimmy is revealed to be a bad artist and writer due to his lack of creativity. But in the movie, he can draw fairly well, as far as his inventions' blueprints are concerned.
Jimmy's inventions include, but are not limited to Goddard, a time machine, the Nanobots, and many more. He has several gum and candy-based inventions, which include The Neutronic Air Gum, that allow humans to breathe under water, gum that allows one to memorize books, and candy, that satisfies all the tongue's taste buds. After eating such candy, humans develop a physiological need (addiction) for it. He also made inventions to help him with transportation, the most frequently employed being his flying rocket or hover car. He also has a game pyramid, which allows players to go inside their favorite video game, and a Cloning Machine.
Jimmy also has a watch that is able to communicate with others, thought it is not clear when he invented (or enhanced) it.
In the video games, he makes several inventions, similar to the series. Many times, he creates different types of advanced spaceships with space buses, space bikes, being able to use amusement rides to create some, and finishing with his favorite, the hovercar, which he uses almost frequently. He creates these inventions in an extensive lab, located under his clubhouse, which is accessible to him only, by means of a DNA scan from a piece of his hair.
In the Chrysler Town & Country Commercial, he introduces his newest invention: "The Neutron Dimensionalizer."
The llama-obsessed Carl Wheezer is one of Jimmy's best friends. He may not be as smart as Jimmy, but he is very loyal to him. He's willing to help Jimmy as much as possible, but hates testing Jimmy's inventions. Normally, he plays the foils to Jimmy's genius, and sometimes solve the episode's crisis with some innocent or insane observation. However, other times he is the cause of the problem. He accompanies Jimmy in his wild adventures and usually ends up in trouble. Jimmy likes Carl because he is loyal and helps Jimmy with his experiments.
Sheen is Jimmy's hyperactive friend who is obsessed with UltraLord. He is responsible for a great deal of the blunders Jimmy often has to fix. He also volunteers to test Jimmy's experiments, but not nearly as often as Carl. Like Carl, he is not near as smart as Jimmy. In Sheen's Brain, Jimmy uses the Brain Drain Helmet to make him a genius, which causes his brain to increase in size; he also gains telepathic abilities and telekinesis and plots to destroy the town. When Sheen brutally strikes Jimmy and Carl with a lightning bolt, he realizes that his new powers have turned him into a monster and changes back to normal before the danger of his head exploding occurred. Trouble is never far away from Sheen, as is seen in several episodes of the show. It is unknown why he and the others don't go looking for Sheen in Planet Sheen.
Goddard is Jimmy's favorite invention and one of his best friends. Jimmy and Goddard clearly have a "boy and his dog" relationship and Goddard is always there to help Jimmy when he's in trouble. It is shown in many episodes (such as Best in Show, Billion Dollar Boy, Jimmy Timmy Power Hour and the movie), Jimmy cares deeply for Goddard and gets emotionally crushed when he gets hurt or loses him. Even during Jimmy's toughest challenges, he has always been able to rely on Goddard and always be there for him no matter what.
Main article: Jimmy and Cindy's relationship
Cindy is Jimmy's female counterpart, academic rival and girlfriend. Even though they bicker frequently, Jimmy stills sees Cindy as a friend because she is the one person who keeps him on his feet. They grow to admire one another, and even develop crushes on each other over the course of the series, but act as if they dislike each other in front of others in order to hide it. They begin to secretly go out on dates during season 3.
Jimmy likes Libby because she tends to be calm and sensible. Libby serves as a big sister to Jimmy and is always trying to get him to come out of his shell, which Jimmy often reluctantly agrees to. In Crouching Jimmy, Hidden Sheen, when Yoo-Yee kidnaps Libby, he works hard to help Sheen fight him to save her.
While Jimmy and Nick don't hang out much as they did in the movie, Nick plays a big brother role towards Jimmy. He usually gives him advice, advice which sometimes gets him in trouble. Nick does tease Jimmy sometimes, and sees him much like an annoying little brother, but they are good friends and have a strong bond. If season four had happened, Nick would have rejoined the main cast and further developed his relationships with Jimmy and the other main characters.
Main article: Jimmy and Betty's Relationship
Betty Quinlan is Jimmy's first known crush. Jimmy very noticeably displayed affection toward her, even in front of his peers. He always hid his crushes from people in other instances, which shows that his crushing on Betty was strong enough that he showed it without realising. He often tried to impress her with his inventions, and she seemed charmed by him. She flirted with Jimmy thoughout the series, seemingly aware of Jimmy's interest in her. Towards the end of the series, she began to pick up on Jimmy and Cindy's growing feelings in each other and she seemed fully supportive of it.
However in League of Villains, it is shown that Jimmy still has a drawer full of pictures of Betty in his lab, and he had one sitting out by his computer and one in his captain's log. Though Cindy made him get rid of them, this makes it clear that Jimmy hasn't gotten over her.
Jimmy has a strong and loving relationship with his parents, Hugh and Judy. They are always there for him when he needs them, although they do get annoyed with Jimmy's rebellious and mischievous behavior, and the trouble he and his inventions cause. They are loving parents, correcting his misbehaviour, while still supporting him and caring for him.
Sadly though, Hugh and Judy seem to be the only relatives who care about Jimmy, since his other relatives (on Hugh's side at least) consider him a black sheep for being different, as shown in Clash of the Cousins.
- "Gotta blast!" - Jimmy's catchphrase
- "Think, think, think! Brain Blast!" - Jimmy's catchphrase
- "Very Capable Robots!" -??
- "I already told you Goddard, this invention helps me bring down my ego when Cindy calls me a 'know-it-all'. It's hard to not act like a know-it-all when you actually do know it ALL." - Substitute Creature
- "Twenty-five cents?! I'm worth at LEAST-" - Birth of a Salesman
- "Hmm... The candy is so perfect, it seems to have developed a physiological need in people. Let the exploitation begin!!" - Krunch Time
- "I hereby accept your nomination as mayor of Donkey Town." - Stranded
- "I'm sorry, miss. Do I know you?" - Normal Boy
- "Ha! Just kidding! Let's PARTY!!!" - The Eggpire Strikes Back
- "No, but we survived by learning to help each other, and that's what makes us rich: rich in friendship!" - A Beautiful Mine
- "(Goddard shows on screen)...Go back in time and tell Cindy you will lose the contest.' Jimmy: Goddard, whose side are you ON?!!..." - Birth of a Salesman
- "This is going to be a memorable Halloween Goddard. That is if we survive." - Nightmare in Retroville
- "That's a nice story, girls, but as it stands, I'M WINNING THIS CONTEST!!!" - Birth of a Salesman
- (Jimmy talking to Cindy) "I can't talk, I can't think. Everywhere I go, you're there!"
Cindy: "What kind of sick joke is this?"
Jimmy: "Oh, you're gonna make me say it, aren't you? Okay, then, I'll say it..... I love you, Cindy Vortex!" - Love Potion 976/J
- "I've developed a plan in case the ninjas return." - Crouching Jimmy, Hidden Sheen
- "I'm dead! I'm streaking, and I'm dead." - Jimmy Goes to College
- (Goddard shows on screen) "'Cheat'... Cheating would be dishonest... But I'm too blinded by my desire to beat Cindy to care!!" - Maximum Hugh
- "Gentlemen, I give you the Brain Drain 8000. The same dumbing down technology used by top radio personalities." - Normal Boy
- "I may have made a tiny miscalculation...!" -Jimmy on Ice
- "By the way, the guys told me about the Candy Bar. I'm afraid I'm gonna have to erase your short term memory." -The Eggpire Strikes Back
- "I hate where this is going..." -Attack of the Twonkies
- "Um, Cindy, I know you've been through a lot the past few hours, but, um... Get OUTTA MY LAB!!!" -Jimmy Timmy Power Hour
- "Gentlemen, I give you: our UltraLord thief!" -Crime Sheen Investigation
- "Sheen, NO!! That's highly concentrated essence of sour!!" -Krunch Time
- "I can't maintain top speed! My rocket must've been damaged when it landed! Wonder who was driving?!" -The League of Villains
- "A striped moon?! That's a meteorological impossibility!!" -Win Lose and Kaboom!
- "If you think you can do a better job, then just SAY SO!!" -Win Lose and Kaboom!
- "Me see you soon day!! ...'Me see you soon day'?! What a stupid thing to say! Wait, why should I care what Cindy thinks? And why did I get lost in her limpid green eyes?! I've been in the lab too long!" -Love Potion 976/J
- "I'll tell you what's clear: you're a loony old boat jockey with salt on the brain!! And I'll tell you what else! This voyage is OVER, unless someone can explain, in the next ten seconds, how a giant, reptilian monster could POSSIBLY exist in a manmade, freshwater ecosystem!!!" -Monster Hunt
- "You're going back to the lab and I'm going to declone you!" -Send in the Clones
- "Uh, Sheen, ya might wanna hold off on the taunting for just a few more minutes...!" -Sorry, Wrong Era
- "Right about... (points) there... Long-range space scanners have detected the ion trails, indicating the departure route left by whatever alien intelligence has abducted our parents. And as you can see, they lead us to somewhere in the Orion star system approximately three million light years away... So that means we'll have to leave by Friday. Okay, that gives us two days to collect the necessary plutonium, design and test our fusion engines, and build our fleet of interstellar warships. We'll also need to bring snacks! Any questions??" -Jimmy Neutron: Boy Genius
- In the episode "Grumpy Young Men", he has a head similar to Albert Einstein.
- In the shorts, pilot and the movie, his voice was more scratchy and higher in pitch. In the series, his voice is more deep and clear.
- During the time of the movie and the early years of the show, Jimmy became the mascot for Nickelodeon.
- Jimmy, Carl and Sheen are the only characters to be in every episode of the original series.
- Throughout the show, it is constantly hinted at that Jimmy inherited his intelligence from his mother, who has shown certain degrees of brilliance herself like when in "See Jimmy Run", she explains how the overwhelming speed of the shoes could cause his shoes to meltdown. In fact, in the book Genius 101, he even comments on Judy's cleverness and Hugh's bumbling nature, saying that is quite obvious where he got his intellect. However, in "Clash of the Cousins", Jimmy analyzed the "Neutron genius gene" which actually comes from his father's side of the family. Although, it is a possibility that both sides of the family carry an individual genius gene.
- In the pilot Runaway Rocketboy, he wears a striped shirt instead of his trademark atom shirt.
- In Planet Sheen, he is only mentioned in the pilot, where we learn that he's built a brand-new rocket made just for one. It is unknown why he and the others don't go looking for Sheen.
- There was actually going to be a TV movie about Jimmy and the others going to Zeenu to find Sheen, but due to low ratings, production costs and several writers moving on, the movie was cancelled.
- His hairstyle in Love Potion 976/J and Lady Sings the News resemble Eustace's.
- Jimmy is the only one to appear nude in public.
- Jimmy is also the only character who does not act as an antagonist willingly.
- As an animation goof throughout the Jimmy Timmy Power Hour trilogy, whenever Jimmy is seen in 2D his watch constantly disappears off his wrist.