Jimmy Neutron Boy Genius

Jimmy Neutron: A young boy genius who invents outlandish gadgets and often finds himself in wacky adventures.
Carl Wheezer: Jimmy's best friend, a bespectacled nerd who is often scared and prone to allergies.
Sheen Estevez: Jimmy's other best friend, an excitable boy who is obsessed with UltraLord.
Cindy Vortex: Jimmy's rival and next-door neighbor, a sassy girl who is often unimpressed with his inventions.
Libby Folfax: Cindy's best friend, a sweet girl who is always up for an adventure.
Hugh Neutron: Jimmy's absent-minded father, a scientist who is often oblivious to the chaos around him.
Judy Neutron: Jimmy's mother, a stay-at-home mom who is always ready to lend a helping hand.
Goddard: Jimmy's talking, flying robot dog, who is always loyal and eager to please.
Miss Fowl: Jimmy's teacher, who was shrunken down to a very small size.
King Goobot: The leader of the Yolkians, a species of egg-like aliens who live on the planet Yolkus.