Jimmy Neutron

James Isaac "Jimmy" Neutron, commonly known as Jimmy Neutron, Boy Genius, is the protagonist and title character from the 2001 animated film Jimmy Neutron: Boy Genius and its Nickelodeon television series adaptation The Adventures of Jimmy Neutron, Boy Genius. Created by showrunner John A. Davis, he has been voiced by Debi Derryberry since the test pilot premiered in 1998.

The character originated in the 1980s, created by Davis and series co-creator Keith Alcorn under the name of Johnny Quasar, and was developed in a 13-minute long short film pitched to SIGGRAPH sometime in 1997, and with production beginning in that year. However, since the name sounded similar to Jonny Quest, Davis brain-stormed various other monikers before coming up with the current name. Characterized by his distinctive hairstyle and ridiculously high IQ of 210, Jimmy Neutron is a child prodigy with a passion for science and technology, being particularly proficient at mechanical engineering, electrical engineering, and aerospace engineering, all levels of physics, astronomy, computer programming, robotics, cybernetics, nanotechnology, and applied science. Throughout the series, he is seen with his companion, a robotic dog named Goddard (presumably after one of Jimmy's idols, Robert H. Goddard) and a rocket ship nicknamed the Strato XL which he uses in the opening sequence, both of which he invented. Furthermore, Neutron has a perennial rivalry with Cindy Vortex, who refers to him as "Nerd-tron".