Remember the old Nickelodeon show, Jimmy Neutron? It was a cartoon series about a boy genius and his adventures in Retroville. There was also his little dog, Goddard who could be summoned by saying “Goddard!” (Jimmy’s catchphrase).
If you miss the show or the character himself, don’t fret! Here are some of the major characters in Jimmy Neutron that made the show an amazing one.

Jimmy Neutron is a cartoon created by Disney Studios. It’s one of the most well-known cartoons of all time, having launched several successful franchises, including The Adventures of Jimmy Neutron: Boy Genius and its spin-offs, which have been spun off into their own TV series and spawned a sequel film. Jimmy Neutron is about a young boy who has an amazing scientific mind who also happens to be an inventor. Although he is just a regular kid, some people believe he has the potential to outsmart the world’s smartest scientists in his brain. Jimmy is one of the main characters on the show. He is always trying to find time for his inventions, save the world from dangerous threats, and compete with other geniuses like himself. Jimmy starts out as a child and ends up being one of the smartest kids in town.

Below is the list of the major characters

Jimmy Neutron

Major Characters in Jimmy Neutron.

A science prodigy.

Jimmy Neutron is the main character of the show. He is a genius inventor and he is constantly creating inventions that make life easier for his friends and family. In his spare time, Jimmy enjoys playing video games and tinkering with cars. He is best friends with Carl Wheezer.

Jimmy Neutron is a genius, and despite the fact that he’s only ten years old and in the fourth grade, he’s always trying to find time for his inventions, save the world from dangerous threats, and compete with other geniuses like himself. Although he is just a regular kid, some people believe he has the potential to outsmart the world’s smartest scientists. Even though Jimmy is one of the main characters on the show, he doesn’t have much character development. He starts out as a child and ends up being one of the smartest kids in town.


Jimmy’s Parents

Major Characters in Jimmy Neutron.

Jimmy Neutron’s parents are the main antagonists of the show. They’re not evil, like villains like Doctor Doofenshmirtz from Phineas and Ferb. Instead, they’re just very competitive and want Jimmy to excel in everything he does. They can be a little overbearing at times, but they love their son.

Jimmy’s father is always trying to put down Jimmy’s inventions or tell him how he could have done better on something that was tough. He just likes to brag about himself all the time and doesn’t seem to respect his son as much as he should.

Jimmy’s mother is more laid-back than her husband, but she will also try to put down her son’s work sometimes too. She is more supportive of Jimmy than her husband is, but she’ll still try to do what she can to help him improve.

Cindy Vortex

Cindy Vortex is Jimmy Neutron’s love interest. She is a child genius with an IQ of 216. Cindy has blonde hair and is frequently seen wearing pink, red, or purple. She also loves to mess with Jimmy’s ideas about life in general. However, she does have a caring side to her that comes out when people are in trouble or in need of help.

She is also the most popular girl in school. She is beautiful, smart, and athletic, and it’s no wonder why she has such a large following. Cindy is also somewhat of an airhead and speaks without thinking.

Sheen Estevez

Sheen Estevez is Jimmy Neutron’s best friend on the show. He is often known for making fun of Jimmy and his inventions, but he has a good heart. Sheen is always trying to find new ways to make money and impress Cindy, his girlfriend.

Sheen starts off as a bully who didn’t like anything that Jimmy liked. He eventually starts to like everything that Jimmy likes and becomes more friendly after this point.

In “The Tomorrow Boys,” it is revealed that Sheen has been in love with Cindy Vortex since the first grade when she scribbled her name on his desk in hearts during recess one day. In “Smarty Pants,” Sheen rides the Cygnus X-1 rocket after telling Cindy that he loves her before he takes off into space without any kind of spacesuit or jet pack.


Goddard is an intelligent robot that Jimmy Neutron and Carl both share a connection with. Goddard was invented by Jimmy’s mother, Judy, for their personal use. However, when she went away to work at a lab in Europe, the two boys decided to give him a job as their butler so they wouldn’t have to hire a human being all the time. So he became the family’s domestic assistant with a few extra features.

Carl Wheezer

Carl Wheezer is an eight-year-old boy who is constantly allergic to just about everything and has asthma. He has been friends with Jimmy since they both were five years old.

Carl Wheezer is the best friend of Jimmy Neutron and is constantly causing trouble for him. He’s also a bit of a know-it-all. He mostly comes into contact with Jimmy when he causes Jimmy to get into trouble, but they are really good friends.

In “The Big Cheese,” it is revealed that his father owns a cheese factory and hence is ingesting large amounts of dairy products on a daily basis which may be why he’s constantly sneezing or wheezing.


Libby Folfax

Libby is a female character in the show and she is seen as one of Jimmy’s friends. She is a genius like Jimmy, but she prefers to use her intelligence to create inventions that help people. She enjoys reading and can be found wearing glasses on some occasions.

In one episode, it is revealed that Libon has an “imaginary” twin sister named Lotta who never speaks and often becomes invisible.

One of her hobbies appears to be debating with other girls on the internet about who would win in a fight between different cartoon characters.

Ms. Fowl

Ms. Fowl is Jimmy’s teacher at school, and she is one of the most interesting characters in the show. Here are three things you might not know about her:

She is a very strict teacher who often gets mad at Jimmy for misbehaving.

She often gives Jimmy detention to make up for his mistakes.

She falls in love with one of Sheen’s enemies, an alien named Blorgon, and has an alien daughter with him named Gwen.


Jimmy Neutron is one of the best-known cartoons of all time, although the protagonist Jimmy can’t seem to keep himself out of trouble with his parents, in the end of every episode, Jimmy always gets out of any mess he gets in thanks to his quick thinking and smarts.

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