Jimmy Negatron is an evil version of Jimmy Neutron from another dimension. He only appears in the video game titled "Jimmy Neutron vs. Jimmy Negatron." He is similar to Evil Jimmy, one of Jimmy's clones.
Jimmy Negatron is an evil form of Jimmy Neutron from another dimension. He plays as the main antagonist and villain of the video game, '"Jimmy Neutron vs. Jimmy Negatron".
Negatron looks just like Jimmy except he has a goatee and wears a mad scientists' outfit.
- Negatron's goatee may have been inspired by the Star Trek episode titled Mirror Mirror, in which the evil version of Mr. Spock has a goatee.
- Negatron was originally going to be a character on the show and his name was gonna be "Nummie Jetron".
- Though it is never confirmed, Jimmy Negatron's full name is possibly James Negatron.