James Isaac "Jimmy" Neutron (born March 14th) is the main protagonist of the animated Nickelodeon franchise of the same name. He is the world's smartest 11-year-old. He is named after scientists Sir. Isaac Newton, and James Chadwick who was nicknamed "Jimmy Neutron", because of his discovery of the neutron.
Jimmy is a genius inventor, but most of his inventions seem to cause more destruction than anything and it is usually up to him and his friends to stop them. He lives in Retroville with his robot dog, Goddard, who is named after Robert H. Goddard (a pioneer in modern rocketry) and his parents, Hugh, a bumbling, goofy car salesman and duck-lover, and Judy who is his mother. He has an IQ of 210, making him the most intelligent resident of Retroville. He also loves having adventures with his best friends; Carl, Sheen, Nick, Cindy, Libby, and Goddard and fighting Villains. Jimmy also hates being short and usually gets mad when he's reminded of it.
He is voiced by Debi Derryberry.